Merge tag '0.9.2' into debian/platform-0.9

Tag version 0.9.2

24 files changed, 793 insertions, 1196 deletions

diff --git a/testing/tests/perf/assets/cert_default.conf b/testing/tests/benchmarks/assets/cert_default.conf
index 8043cea3..8043cea3 100644
--- a/testing/tests/perf/assets/cert_default.conf
+++ b/testing/tests/benchmarks/assets/cert_default.conf
diff --git a/testing/tests/benchmarks/conftest.py b/testing/tests/benchmarks/conftest.py
new file mode 100644
index 00000000..a9cc3464
--- /dev/null
+++ b/testing/tests/benchmarks/conftest.py
@@ -0,0 +1,57 @@
+import pytest
+import random
+import base64
+
+from twisted.internet import threads, reactor
+
+
+# we have to manually setup the events server in order to be able to signal
+# events. This is usually done by the enclosing application using soledad
+# client (i.e. bitmask client).
+from leap.common.events import server
+server.ensure_server()
+
+
+def pytest_addoption(parser):
+    parser.addoption(
+        "--num-docs", type="int", default=100,
+        help="the number of documents to use in performance tests")
+
+
+@pytest.fixture()
+def payload():
+    def generate(size):
+        random.seed(1337)  # same seed to avoid different bench results
+        payload_bytes = bytearray(random.getrandbits(8) for _ in xrange(size))
+        # encode as base64 to avoid ascii encode/decode errors
+        return base64.b64encode(payload_bytes)[:size]  # remove b64 overhead
+    return generate
+
+
+@pytest.fixture()
+def txbenchmark(benchmark):
+    def blockOnThread(*args, **kwargs):
+        return threads.deferToThread(
+            benchmark, threads.blockingCallFromThread,
+            reactor, *args, **kwargs)
+    return blockOnThread
+
+
+@pytest.fixture()
+def txbenchmark_with_setup(benchmark):
+    def blockOnThreadWithSetup(setup, f):
+        def blocking_runner(*args, **kwargs):
+            return threads.blockingCallFromThread(reactor, f, *args, **kwargs)
+
+        def blocking_setup():
+            args = threads.blockingCallFromThread(reactor, setup)
+            try:
+                return tuple(arg for arg in args), {}
+            except TypeError:
+                    return ((args,), {}) if args else None
+
+        def bench():
+            return benchmark.pedantic(blocking_runner, setup=blocking_setup,
+                                      rounds=4, warmup_rounds=1)
+        return threads.deferToThread(bench)
+    return blockOnThreadWithSetup
diff --git a/testing/tests/perf/pytest.ini b/testing/tests/benchmarks/pytest.ini
index 7a0508ce..7a0508ce 100644
--- a/testing/tests/perf/pytest.ini
+++ b/testing/tests/benchmarks/pytest.ini
diff --git a/testing/tests/benchmarks/test_crypto.py b/testing/tests/benchmarks/test_crypto.py
new file mode 100644
index 00000000..8ee9b899
--- /dev/null
+++ b/testing/tests/benchmarks/test_crypto.py
@@ -0,0 +1,97 @@
+"""
+Benchmarks for crypto operations.
+If you don't want to stress your local machine too much, you can pass the
+SIZE_LIMT environment variable.
+
+For instance, to keep the maximum payload at 1MB:
+
+SIZE_LIMIT=1E6 py.test -s tests/perf/test_crypto.py
+"""
+import pytest
+import os
+import json
+from uuid import uuid4
+
+from leap.soledad.common.document import SoledadDocument
+from leap.soledad.client import _crypto
+
+LIMIT = int(float(os.environ.get('SIZE_LIMIT', 50 * 1000 * 1000)))
+
+
+def create_doc_encryption(size):
+    @pytest.mark.benchmark(group="test_crypto_encrypt_doc")
+    @pytest.inlineCallbacks
+    def test_doc_encryption(soledad_client, txbenchmark, payload):
+        crypto = soledad_client()._crypto
+
+        DOC_CONTENT = {'payload': payload(size)}
+        doc = SoledadDocument(
+            doc_id=uuid4().hex, rev='rev',
+            json=json.dumps(DOC_CONTENT))
+
+        yield txbenchmark(crypto.encrypt_doc, doc)
+    return test_doc_encryption
+
+
+# TODO this test is really bullshit, because it's still including
+# the json serialization.
+
+def create_doc_decryption(size):
+    @pytest.inlineCallbacks
+    @pytest.mark.benchmark(group="test_crypto_decrypt_doc")
+    def test_doc_decryption(soledad_client, txbenchmark, payload):
+        crypto = soledad_client()._crypto
+
+        DOC_CONTENT = {'payload': payload(size)}
+        doc = SoledadDocument(
+            doc_id=uuid4().hex, rev='rev',
+            json=json.dumps(DOC_CONTENT))
+
+        encrypted_doc = yield crypto.encrypt_doc(doc)
+        doc.set_json(encrypted_doc)
+
+        yield txbenchmark(crypto.decrypt_doc, doc)
+    return test_doc_decryption
+
+
+def create_raw_encryption(size):
+    @pytest.mark.benchmark(group="test_crypto_raw_encrypt")
+    def test_raw_encrypt(benchmark, payload):
+        key = payload(32)
+        benchmark(_crypto.encrypt_sym, payload(size), key)
+    return test_raw_encrypt
+
+
+def create_raw_decryption(size):
+    @pytest.mark.benchmark(group="test_crypto_raw_decrypt")
+    def test_raw_decrypt(benchmark, payload):
+        key = payload(32)
+        iv, ciphertext = _crypto.encrypt_sym(payload(size), key)
+        benchmark(_crypto.decrypt_sym, ciphertext, key, iv)
+    return test_raw_decrypt
+
+
+# Create the TESTS in the global namespace, they'll be picked by the benchmark
+# plugin.
+
+encryption_tests = [
+    ('10k', 1E4),
+    ('100k', 1E5),
+    ('500k', 5E5),
+    ('1M', 1E6),
+    ('10M', 1E7),
+    ('50M', 5E7),
+]
+
+for name, size in encryption_tests:
+    if size < LIMIT:
+        sz = int(size)
+        globals()['test_encrypt_doc_' + name] = create_doc_encryption(sz)
+        globals()['test_decrypt_doc_' + name] = create_doc_decryption(sz)
+
+
+for name, size in encryption_tests:
+    if size < LIMIT:
+        sz = int(size)
+        globals()['test_encrypt_raw_' + name] = create_raw_encryption(sz)
+        globals()['test_decrypt_raw_' + name] = create_raw_decryption(sz)
diff --git a/testing/tests/perf/test_misc.py b/testing/tests/benchmarks/test_misc.py
index ead48adf..ead48adf 100644
--- a/testing/tests/perf/test_misc.py
+++ b/testing/tests/benchmarks/test_misc.py
diff --git a/testing/tests/perf/test_sqlcipher.py b/testing/tests/benchmarks/test_sqlcipher.py
index e7a54228..39c9e3ad 100644
--- a/testing/tests/perf/test_sqlcipher.py
+++ b/testing/tests/benchmarks/test_sqlcipher.py
@@ -29,10 +29,10 @@ def build_test_sqlcipher_create(amount, size):
     return test
 
 
-test_async_create_20_500k = build_test_sqlcipher_async_create(20, 500*1000)
-test_async_create_100_100k = build_test_sqlcipher_async_create(100, 100*1000)
-test_async_create_1000_10k = build_test_sqlcipher_async_create(1000, 10*1000)
+test_async_create_20_500k = build_test_sqlcipher_async_create(20, 500 * 1000)
+test_async_create_100_100k = build_test_sqlcipher_async_create(100, 100 * 1000)
+test_async_create_1000_10k = build_test_sqlcipher_async_create(1000, 10 * 1000)
 # synchronous
-test_create_20_500k = build_test_sqlcipher_create(20, 500*1000)
-test_create_100_100k = build_test_sqlcipher_create(100, 100*1000)
-test_create_1000_10k = build_test_sqlcipher_create(1000, 10*1000)
+test_create_20_500k = build_test_sqlcipher_create(20, 500 * 1000)
+test_create_100_100k = build_test_sqlcipher_create(100, 100 * 1000)
+test_create_1000_10k = build_test_sqlcipher_create(1000, 10 * 1000)
diff --git a/testing/tests/perf/test_sync.py b/testing/tests/benchmarks/test_sync.py
index 0b48a0b9..1501d74b 100644
--- a/testing/tests/perf/test_sync.py
+++ b/testing/tests/benchmarks/test_sync.py
@@ -1,17 +1,14 @@
 import pytest
-
 from twisted.internet.defer import gatherResults
 
 
+@pytest.inlineCallbacks
 def load_up(client, amount, payload):
-    deferreds = []
     # create a bunch of local documents
+    deferreds = []
     for i in xrange(amount):
-        d = client.create_doc({'content': payload})
-        deferreds.append(d)
-    d = gatherResults(deferreds)
-    d.addCallback(lambda _: None)
-    return d
+        deferreds.append(client.create_doc({'content': payload}))
+    yield gatherResults(deferreds)
 
 
 def create_upload(uploads, size):
@@ -27,9 +24,9 @@ def create_upload(uploads, size):
     return test
 
 
-test_upload_20_500k = create_upload(20, 500*1000)
-test_upload_100_100k = create_upload(100, 100*1000)
-test_upload_1000_10k = create_upload(1000, 10*1000)
+test_upload_20_500k = create_upload(20, 500 * 1000)
+test_upload_100_100k = create_upload(100, 100 * 1000)
+test_upload_1000_10k = create_upload(1000, 10 * 1000)
 
 
 def create_download(downloads, size):
@@ -52,9 +49,9 @@ def create_download(downloads, size):
     return test
 
 
-test_download_20_500k = create_download(20, 500*1000)
-test_download_100_100k = create_download(100, 100*1000)
-test_download_1000_10k = create_download(1000, 10*1000)
+test_download_20_500k = create_download(20, 500 * 1000)
+test_download_100_100k = create_download(100, 100 * 1000)
+test_download_1000_10k = create_download(1000, 10 * 1000)
 
 
 @pytest.inlineCallbacks
diff --git a/testing/tests/client/test_aux_methods.py b/testing/tests/client/test_aux_methods.py
index c25ff8ca..9b4a175f 100644
--- a/testing/tests/client/test_aux_methods.py
+++ b/testing/tests/client/test_aux_methods.py
@@ -21,10 +21,10 @@ import os
 
 from twisted.internet import defer
 
-from leap.soledad.common.errors import DatabaseAccessError
 from leap.soledad.client import Soledad
 from leap.soledad.client.adbapi import U1DBConnectionPool
 from leap.soledad.client.secrets import PassphraseTooShort
+from leap.soledad.client.secrets import SecretsException
 
 from test_soledad.util import BaseSoledadTest
 
@@ -108,7 +108,7 @@ class AuxMethodsTestCase(BaseSoledadTest):
         sol.change_passphrase(u'654321')
         sol.close()
 
-        with self.assertRaises(DatabaseAccessError):
+        with self.assertRaises(SecretsException):
             self._soledad_instance(
                 'leap@leap.se',
                 passphrase=u'123',
diff --git a/testing/tests/client/test_crypto.py b/testing/tests/client/test_crypto.py
index 77252b46..49a61438 100644
--- a/testing/tests/client/test_crypto.py
+++ b/testing/tests/client/test_crypto.py
@@ -17,47 +17,173 @@
 """
 Tests for cryptographic related stuff.
 """
-import os
-import hashlib
 import binascii
+import base64
+import hashlib
+import json
+import os
+
+from io import BytesIO
+
+import pytest
+
+from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
+from cryptography.hazmat.backends import default_backend
+from cryptography.exceptions import InvalidTag
 
-from leap.soledad.client import crypto
 from leap.soledad.common.document import SoledadDocument
 from test_soledad.util import BaseSoledadTest
-from leap.soledad.common.crypto import WrongMacError
-from leap.soledad.common.crypto import UnknownMacMethodError
-from leap.soledad.common.crypto import ENC_JSON_KEY
-from leap.soledad.common.crypto import ENC_SCHEME_KEY
-from leap.soledad.common.crypto import MAC_KEY
-from leap.soledad.common.crypto import MAC_METHOD_KEY
+from leap.soledad.client import _crypto
+
+from twisted.trial import unittest
+from twisted.internet import defer
+
+
+snowden1 = (
+    "You can't come up against "
+    "the world's most powerful intelligence "
+    "agencies and not accept the risk. "
+    "If they want to get you, over time "
+    "they will.")
+
+
+class AESTest(unittest.TestCase):
+
+    def test_chunked_encryption(self):
+        key = 'A' * 32
+
+        fd = BytesIO()
+        aes = _crypto.AESWriter(key, _buffer=fd)
+        iv = aes.iv
+
+        data = snowden1
+        block = 16
+
+        for i in range(len(data) / block):
+            chunk = data[i * block:(i + 1) * block]
+            aes.write(chunk)
+        aes.end()
+
+        ciphertext_chunked = fd.getvalue()
+        ciphertext, tag = _aes_encrypt(key, iv, data)
+
+        assert ciphertext_chunked == ciphertext
+
+    def test_decrypt(self):
+        key = 'A' * 32
+        iv = 'A' * 16
+
+        data = snowden1
+        block = 16
+
+        ciphertext, tag = _aes_encrypt(key, iv, data)
+
+        fd = BytesIO()
+        aes = _crypto.AESWriter(key, iv, fd, tag=tag)
+
+        for i in range(len(ciphertext) / block):
+            chunk = ciphertext[i * block:(i + 1) * block]
+            aes.write(chunk)
+        aes.end()
+
+        cleartext_chunked = fd.getvalue()
+        assert cleartext_chunked == data
+
+
+class BlobTestCase(unittest.TestCase):
+
+    class doc_info:
+        doc_id = 'D-deadbeef'
+        rev = '397932e0c77f45fcb7c3732930e7e9b2:1'
+
+    @defer.inlineCallbacks
+    def test_blob_encryptor(self):
+
+        inf = BytesIO(snowden1)
+
+        blob = _crypto.BlobEncryptor(
+            self.doc_info, inf,
+            secret='A' * 96)
 
+        encrypted = yield blob.encrypt()
+        preamble, ciphertext = _crypto._split(encrypted.getvalue())
+        ciphertext = ciphertext[:-16]
 
-class EncryptedSyncTestCase(BaseSoledadTest):
+        assert len(preamble) == _crypto.PACMAN.size
+        unpacked_data = _crypto.PACMAN.unpack(preamble)
+        magic, sch, meth, ts, iv, doc_id, rev = unpacked_data
+        assert magic == _crypto.BLOB_SIGNATURE_MAGIC
+        assert sch == 1
+        assert meth == _crypto.ENC_METHOD.aes_256_gcm
+        assert iv == blob.iv
+        assert doc_id == 'D-deadbeef'
+        assert rev == self.doc_info.rev
 
-    """
-    Tests that guarantee that data will always be encrypted when syncing.
-    """
+        aes_key = _crypto._get_sym_key_for_doc(
+            self.doc_info.doc_id, 'A' * 96)
+        assert ciphertext == _aes_encrypt(aes_key, blob.iv, snowden1)[0]
 
-    def test_encrypt_decrypt_json(self):
+        decrypted = _aes_decrypt(aes_key, blob.iv, blob.tag, ciphertext,
+                                 preamble)
+        assert str(decrypted) == snowden1
+
+    @defer.inlineCallbacks
+    def test_blob_decryptor(self):
+
+        inf = BytesIO(snowden1)
+
+        blob = _crypto.BlobEncryptor(
+            self.doc_info, inf,
+            secret='A' * 96)
+        ciphertext = yield blob.encrypt()
+
+        decryptor = _crypto.BlobDecryptor(
+            self.doc_info, ciphertext,
+            secret='A' * 96)
+        decrypted = yield decryptor.decrypt()
+        assert decrypted == snowden1
+
+    @defer.inlineCallbacks
+    def test_encrypt_and_decrypt(self):
         """
-        Test encrypting and decrypting documents.
+        Check that encrypting and decrypting gives same doc.
         """
-        simpledoc = {'key': 'val'}
-        doc1 = SoledadDocument(doc_id='id')
-        doc1.content = simpledoc
-
-        # encrypt doc
-        doc1.set_json(self._soledad._crypto.encrypt_doc(doc1))
-        # assert content is different and includes keys
-        self.assertNotEqual(
-            simpledoc, doc1.content,
-            'incorrect document encryption')
-        self.assertTrue(ENC_JSON_KEY in doc1.content)
-        self.assertTrue(ENC_SCHEME_KEY in doc1.content)
-        # decrypt doc
-        doc1.set_json(self._soledad._crypto.decrypt_doc(doc1))
-        self.assertEqual(
-            simpledoc, doc1.content, 'incorrect document encryption')
+        crypto = _crypto.SoledadCrypto('A' * 96)
+        payload = {'key': 'someval'}
+        doc1 = SoledadDocument('id1', '1', json.dumps(payload))
+
+        encrypted = yield crypto.encrypt_doc(doc1)
+        assert encrypted != payload
+        assert 'raw' in encrypted
+        doc2 = SoledadDocument('id1', '1')
+        doc2.set_json(encrypted)
+        assert _crypto.is_symmetrically_encrypted(encrypted)
+        decrypted = yield crypto.decrypt_doc(doc2)
+        assert len(decrypted) != 0
+        assert json.loads(decrypted) == payload
+
+    @defer.inlineCallbacks
+    def test_decrypt_with_wrong_tag_raises(self):
+        """
+        Trying to decrypt a document with wrong MAC should raise.
+        """
+        crypto = _crypto.SoledadCrypto('A' * 96)
+        payload = {'key': 'someval'}
+        doc1 = SoledadDocument('id1', '1', json.dumps(payload))
+
+        encrypted = yield crypto.encrypt_doc(doc1)
+        encdict = json.loads(encrypted)
+        preamble, raw = _crypto._split(str(encdict['raw']))
+        # mess with tag
+        messed = raw[:-16] + '0' * 16
+
+        preamble = base64.urlsafe_b64encode(preamble)
+        newraw = preamble + ' ' + base64.urlsafe_b64encode(str(messed))
+        doc2 = SoledadDocument('id1', '1')
+        doc2.set_json(json.dumps({"raw": str(newraw)}))
+
+        with pytest.raises(_crypto.InvalidBlob):
+            yield crypto.decrypt_doc(doc2)
 
 
 class RecoveryDocumentTestCase(BaseSoledadTest):
@@ -74,13 +200,14 @@ class RecoveryDocumentTestCase(BaseSoledadTest):
         encrypted_secret = rd[
             self._soledad.secrets.STORAGE_SECRETS_KEY][secret_id]
         self.assertTrue(self._soledad.secrets.CIPHER_KEY in encrypted_secret)
-        self.assertTrue(
-            encrypted_secret[self._soledad.secrets.CIPHER_KEY] == 'aes256')
+        self.assertEquals(
+            _crypto.ENC_METHOD.aes_256_gcm,
+            encrypted_secret[self._soledad.secrets.CIPHER_KEY])
         self.assertTrue(self._soledad.secrets.LENGTH_KEY in encrypted_secret)
         self.assertTrue(self._soledad.secrets.SECRET_KEY in encrypted_secret)
 
-    def test_import_recovery_document(self):
-        rd = self._soledad.secrets._export_recovery_document()
+    def test_import_recovery_document(self, cipher='aes256'):
+        rd = self._soledad.secrets._export_recovery_document(cipher)
         s = self._soledad_instance()
         s.secrets._import_recovery_document(rd)
         s.secrets.set_secret_id(self._soledad.secrets._secret_id)
@@ -89,6 +216,14 @@ class RecoveryDocumentTestCase(BaseSoledadTest):
                          'Failed settinng secret for symmetric encryption.')
         s.close()
 
+    def test_import_GCM_recovery_document(self):
+        cipher = self._soledad.secrets.CIPHER_AES256_GCM
+        self.test_import_recovery_document(cipher)
+
+    def test_import_legacy_CTR_recovery_document(self):
+        cipher = self._soledad.secrets.CIPHER_AES256
+        self.test_import_recovery_document(cipher)
+
 
 class SoledadSecretsTestCase(BaseSoledadTest):
 
@@ -146,60 +281,21 @@ class SoledadSecretsTestCase(BaseSoledadTest):
             "Should have a secret at this point")
 
 
-class MacAuthTestCase(BaseSoledadTest):
-
-    def test_decrypt_with_wrong_mac_raises(self):
-        """
-        Trying to decrypt a document with wrong MAC should raise.
-        """
-        simpledoc = {'key': 'val'}
-        doc = SoledadDocument(doc_id='id')
-        doc.content = simpledoc
-        # encrypt doc
-        doc.set_json(self._soledad._crypto.encrypt_doc(doc))
-        self.assertTrue(MAC_KEY in doc.content)
-        self.assertTrue(MAC_METHOD_KEY in doc.content)
-        # mess with MAC
-        doc.content[MAC_KEY] = '1234567890ABCDEF'
-        # try to decrypt doc
-        self.assertRaises(
-            WrongMacError,
-            self._soledad._crypto.decrypt_doc, doc)
-
-    def test_decrypt_with_unknown_mac_method_raises(self):
-        """
-        Trying to decrypt a document with unknown MAC method should raise.
-        """
-        simpledoc = {'key': 'val'}
-        doc = SoledadDocument(doc_id='id')
-        doc.content = simpledoc
-        # encrypt doc
-        doc.set_json(self._soledad._crypto.encrypt_doc(doc))
-        self.assertTrue(MAC_KEY in doc.content)
-        self.assertTrue(MAC_METHOD_KEY in doc.content)
-        # mess with MAC method
-        doc.content[MAC_METHOD_KEY] = 'mymac'
-        # try to decrypt doc
-        self.assertRaises(
-            UnknownMacMethodError,
-            self._soledad._crypto.decrypt_doc, doc)
-
-
 class SoledadCryptoAESTestCase(BaseSoledadTest):
 
     def test_encrypt_decrypt_sym(self):
         # generate 256-bit key
         key = os.urandom(32)
-        iv, cyphertext = crypto.encrypt_sym('data', key)
+        iv, cyphertext = _crypto.encrypt_sym('data', key)
         self.assertTrue(cyphertext is not None)
         self.assertTrue(cyphertext != '')
         self.assertTrue(cyphertext != 'data')
-        plaintext = crypto.decrypt_sym(cyphertext, key, iv)
+        plaintext = _crypto.decrypt_sym(cyphertext, key, iv)
         self.assertEqual('data', plaintext)
 
-    def test_decrypt_with_wrong_iv_fails(self):
+    def test_decrypt_with_wrong_iv_raises(self):
         key = os.urandom(32)
-        iv, cyphertext = crypto.encrypt_sym('data', key)
+        iv, cyphertext = _crypto.encrypt_sym('data', key)
         self.assertTrue(cyphertext is not None)
         self.assertTrue(cyphertext != '')
         self.assertTrue(cyphertext != 'data')
@@ -208,13 +304,13 @@ class SoledadCryptoAESTestCase(BaseSoledadTest):
         wrongiv = rawiv
         while wrongiv == rawiv:
             wrongiv = os.urandom(1) + rawiv[1:]
-        plaintext = crypto.decrypt_sym(
-            cyphertext, key, iv=binascii.b2a_base64(wrongiv))
-        self.assertNotEqual('data', plaintext)
+        with pytest.raises(InvalidTag):
+            _crypto.decrypt_sym(
+                cyphertext, key, iv=binascii.b2a_base64(wrongiv))
 
-    def test_decrypt_with_wrong_key_fails(self):
+    def test_decrypt_with_wrong_key_raises(self):
         key = os.urandom(32)
-        iv, cyphertext = crypto.encrypt_sym('data', key)
+        iv, cyphertext = _crypto.encrypt_sym('data', key)
         self.assertTrue(cyphertext is not None)
         self.assertTrue(cyphertext != '')
         self.assertTrue(cyphertext != 'data')
@@ -222,5 +318,21 @@ class SoledadCryptoAESTestCase(BaseSoledadTest):
         # ensure keys are different in case we are extremely lucky
         while wrongkey == key:
             wrongkey = os.urandom(32)
-        plaintext = crypto.decrypt_sym(cyphertext, wrongkey, iv)
-        self.assertNotEqual('data', plaintext)
+        with pytest.raises(InvalidTag):
+            _crypto.decrypt_sym(cyphertext, wrongkey, iv)
+
+
+def _aes_encrypt(key, iv, data):
+    backend = default_backend()
+    cipher = Cipher(algorithms.AES(key), modes.GCM(iv), backend=backend)
+    encryptor = cipher.encryptor()
+    return encryptor.update(data) + encryptor.finalize(), encryptor.tag
+
+
+def _aes_decrypt(key, iv, tag, data, aead=''):
+    backend = default_backend()
+    cipher = Cipher(algorithms.AES(key), modes.GCM(iv, tag), backend=backend)
+    decryptor = cipher.decryptor()
+    if aead:
+        decryptor.authenticate_additional_data(aead)
+    return decryptor.update(data) + decryptor.finalize()
diff --git a/testing/tests/client/test_deprecated_crypto.py b/testing/tests/client/test_deprecated_crypto.py
new file mode 100644
index 00000000..8ee3735c
--- /dev/null
+++ b/testing/tests/client/test_deprecated_crypto.py
@@ -0,0 +1,91 @@
+import json
+from twisted.internet import defer
+from uuid import uuid4
+from urlparse import urljoin
+
+from leap.soledad.client import crypto as old_crypto
+from leap.soledad.common.couch import CouchDatabase
+from leap.soledad.common import crypto as common_crypto
+
+from test_soledad.u1db_tests import simple_doc
+from test_soledad.util import SoledadWithCouchServerMixin
+from test_soledad.util import make_token_soledad_app
+from test_soledad.u1db_tests import TestCaseWithServer
+
+
+def deprecate_client_crypto(client):
+    secret = client._crypto.secret
+    _crypto = old_crypto.SoledadCrypto(secret)
+    setattr(client._dbsyncer, '_crypto', _crypto)
+    return client
+
+
+def couch_database(couch_url, uuid):
+    db = CouchDatabase(couch_url, "user-%s" % (uuid,))
+    return db
+
+
+class DeprecatedCryptoTest(SoledadWithCouchServerMixin, TestCaseWithServer):
+
+    def setUp(self):
+        SoledadWithCouchServerMixin.setUp(self)
+        TestCaseWithServer.setUp(self)
+
+    def tearDown(self):
+        SoledadWithCouchServerMixin.tearDown(self)
+        TestCaseWithServer.tearDown(self)
+
+    @staticmethod
+    def make_app_with_state(state):
+        return make_token_soledad_app(state)
+
+    @defer.inlineCallbacks
+    def test_touch_updates_remote_representation(self):
+        self.startTwistedServer()
+        user = 'user-' + uuid4().hex
+        server_url = 'http://%s:%d' % (self.server_address)
+        client = self._soledad_instance(user=user, server_url=server_url)
+        deprecated_client = deprecate_client_crypto(
+            self._soledad_instance(user=user, server_url=server_url))
+
+        self.make_app()
+        remote = self.request_state._create_database(replica_uid=client._uuid)
+        remote = CouchDatabase.open_database(
+            urljoin(self.couch_url, 'user-' + user),
+            create=True)
+
+        # ensure remote db is empty
+        gen, docs = remote.get_all_docs()
+        assert gen == 0
+        assert len(docs) == 0
+
+        # create a doc with deprecated client and sync
+        yield deprecated_client.create_doc(json.loads(simple_doc))
+        yield deprecated_client.sync()
+
+        # check for doc in remote db
+        gen, docs = remote.get_all_docs()
+        assert gen == 1
+        assert len(docs) == 1
+        doc = docs.pop()
+        content = doc.content
+        assert common_crypto.ENC_JSON_KEY in content
+        assert common_crypto.ENC_SCHEME_KEY in content
+        assert common_crypto.ENC_METHOD_KEY in content
+        assert common_crypto.ENC_IV_KEY in content
+        assert common_crypto.MAC_KEY in content
+        assert common_crypto.MAC_METHOD_KEY in content
+
+        # "touch" the document with a newer client and synx
+        _, docs = yield client.get_all_docs()
+        yield client.put_doc(doc)
+        yield client.sync()
+
+        # check for newer representation of doc in remote db
+        gen, docs = remote.get_all_docs()
+        assert gen == 2
+        assert len(docs) == 1
+        doc = docs.pop()
+        content = doc.content
+        assert len(content) == 1
+        assert 'raw' in content
diff --git a/testing/tests/conftest.py b/testing/tests/conftest.py
index 9e4319ac..1ff1cbb7 100644
--- a/testing/tests/conftest.py
+++ b/testing/tests/conftest.py
@@ -1,4 +1,29 @@
+import json
+import os
 import pytest
+import requests
+import signal
+import time
+
+from hashlib import sha512
+from subprocess import call
+from urlparse import urljoin
+from uuid import uuid4
+
+from leap.soledad.common.couch import CouchDatabase
+from leap.soledad.client import Soledad
+
+
+#
+# default options for all tests
+#
+
+DEFAULT_PASSPHRASE = '123'
+
+DEFAULT_URL = 'http://127.0.0.1:2424'
+DEFAULT_PRIVKEY = 'soledad_privkey.pem'
+DEFAULT_CERTKEY = 'soledad_certkey.pem'
+DEFAULT_TOKEN = 'an-auth-token'
 
 
 def pytest_addoption(parser):
@@ -16,3 +41,167 @@ def couch_url(request):
 @pytest.fixture
 def method_tmpdir(request, tmpdir):
     request.instance.tempdir = tmpdir.strpath
+
+
+#
+# remote_db fixture: provides an empty database for a given user in a per
+# function scope.
+#
+
+class UserDatabase(object):
+
+    def __init__(self, url, uuid):
+        self._remote_db_url = urljoin(url, 'user-%s' % uuid)
+
+    def setup(self):
+        return CouchDatabase.open_database(
+            url=self._remote_db_url, create=True, replica_uid=None)
+
+    def teardown(self):
+        requests.delete(self._remote_db_url)
+
+
+@pytest.fixture()
+def remote_db(request):
+    couch_url = request.config.option.couch_url
+
+    def create(uuid):
+        db = UserDatabase(couch_url, uuid)
+        request.addfinalizer(db.teardown)
+        return db.setup()
+    return create
+
+
+def get_pid(pidfile):
+    if not os.path.isfile(pidfile):
+        return 0
+    try:
+        with open(pidfile) as f:
+            return int(f.read())
+    except IOError:
+        return 0
+
+
+#
+# soledad_server fixture: provides a running soledad server in a per module
+# context (same soledad server for all tests in this module).
+#
+
+class SoledadServer(object):
+
+    def __init__(self, tmpdir_factory, couch_url):
+        tmpdir = tmpdir_factory.mktemp('soledad-server')
+        self._pidfile = os.path.join(tmpdir.strpath, 'soledad-server.pid')
+        self._logfile = os.path.join(tmpdir.strpath, 'soledad-server.log')
+        self._couch_url = couch_url
+
+    def start(self):
+        self._create_conf_file()
+        # start the server
+        call([
+            'twistd',
+            '--logfile=%s' % self._logfile,
+            '--pidfile=%s' % self._pidfile,
+            'web',
+            '--wsgi=leap.soledad.server.application.wsgi_application',
+            '--port=2424'
+        ])
+
+    def _create_conf_file(self):
+        if not os.access('/etc', os.W_OK):
+            return
+        if not os.path.isdir('/etc/soledad'):
+            os.mkdir('/etc/soledad')
+        with open('/etc/soledad/soledad-server.conf', 'w') as f:
+            content = '[soledad-server]\ncouch_url = %s' % self._couch_url
+            f.write(content)
+
+    def stop(self):
+        pid = get_pid(self._pidfile)
+        os.kill(pid, signal.SIGKILL)
+
+
+@pytest.fixture(scope='module')
+def soledad_server(tmpdir_factory, request):
+    couch_url = request.config.option.couch_url
+    server = SoledadServer(tmpdir_factory, couch_url)
+    server.start()
+    request.addfinalizer(server.stop)
+    return server
+
+
+#
+# soledad_dbs fixture: provides all databases needed by soledad server in a per
+# module scope (same databases for all tests in this module).
+#
+
+def _token_dbname():
+    dbname = 'tokens_' + \
+        str(int(time.time() / (30 * 24 * 3600)))
+    return dbname
+
+
+class SoledadDatabases(object):
+
+    def __init__(self, url):
+        self._token_db_url = urljoin(url, _token_dbname())
+        self._shared_db_url = urljoin(url, 'shared')
+
+    def setup(self, uuid):
+        self._create_dbs()
+        self._add_token(uuid)
+
+    def _create_dbs(self):
+        requests.put(self._token_db_url)
+        requests.put(self._shared_db_url)
+
+    def _add_token(self, uuid):
+        token = sha512(DEFAULT_TOKEN).hexdigest()
+        content = {'type': 'Token', 'user_id': uuid}
+        requests.put(
+            self._token_db_url + '/' + token, data=json.dumps(content))
+
+    def teardown(self):
+        requests.delete(self._token_db_url)
+        requests.delete(self._shared_db_url)
+
+
+@pytest.fixture()
+def soledad_dbs(request):
+    couch_url = request.config.option.couch_url
+
+    def create(uuid):
+        db = SoledadDatabases(couch_url)
+        request.addfinalizer(db.teardown)
+        return db.setup(uuid)
+    return create
+
+
+#
+# soledad_client fixture: provides a clean soledad client for a test function.
+#
+
+@pytest.fixture()
+def soledad_client(tmpdir, soledad_server, remote_db, soledad_dbs, request):
+    passphrase = DEFAULT_PASSPHRASE
+    server_url = DEFAULT_URL
+    token = DEFAULT_TOKEN
+    default_uuid = uuid4().hex
+    remote_db(default_uuid)
+    soledad_dbs(default_uuid)
+
+    # get a soledad instance
+    def create():
+        secrets_path = os.path.join(tmpdir.strpath, '%s.secret' % default_uuid)
+        local_db_path = os.path.join(tmpdir.strpath, '%s.db' % default_uuid)
+        soledad_client = Soledad(
+            default_uuid,
+            unicode(passphrase),
+            secrets_path=secrets_path,
+            local_db_path=local_db_path,
+            server_url=server_url,
+            cert_file=None,
+            auth_token=token)
+        request.addfinalizer(soledad_client.close)
+        return soledad_client
+    return create
diff --git a/testing/tests/couch/conftest.py b/testing/tests/couch/conftest.py
deleted file mode 100644
index 1074f091..00000000
--- a/testing/tests/couch/conftest.py
+++ /dev/null
@@ -1,31 +0,0 @@
-import couchdb
-import pytest
-import random
-import string
-
-
-@pytest.fixture
-def random_name():
-    return 'user-' + ''.join(
-        random.choice(
-            string.ascii_lowercase) for _ in range(10))
-
-
-class RandomDatabase(object):
-
-    def __init__(self, couch_url, name):
-        self.couch_url = couch_url
-        self.name = name
-        self.server = couchdb.client.Server(couch_url)
-        self.database = self.server.create(name)
-
-    def teardown(self):
-        self.server.delete(self.name)
-
-
-@pytest.fixture
-def db(random_name, request):
-    couch_url = request.config.getoption('--couch-url')
-    db = RandomDatabase(couch_url, random_name)
-    request.addfinalizer(db.teardown)
-    return db
diff --git a/testing/tests/couch/test_command.py b/testing/tests/couch/test_command.py
index 68097fb1..9fb2c153 100644
--- a/testing/tests/couch/test_command.py
+++ b/testing/tests/couch/test_command.py
@@ -25,6 +25,7 @@ class CommandBasedDBCreationTest(unittest.TestCase):
                           state.ensure_database, "user-1337")
 
     def test_raises_unauthorized_by_default(self):
-        state = couch_state.CouchServerState("url", check_schema_versions=False)
+        state = couch_state.CouchServerState("url",
+                                             check_schema_versions=False)
         self.assertRaises(u1db_errors.Unauthorized,
                           state.ensure_database, "user-1337")
diff --git a/testing/tests/couch/test_state.py b/testing/tests/couch/test_state.py
index e293b5b8..e5ac3704 100644
--- a/testing/tests/couch/test_state.py
+++ b/testing/tests/couch/test_state.py
@@ -1,25 +1,32 @@
 import pytest
-
 from leap.soledad.common.couch import CONFIG_DOC_ID
 from leap.soledad.common.couch import SCHEMA_VERSION
 from leap.soledad.common.couch import SCHEMA_VERSION_KEY
 from leap.soledad.common.couch.state import CouchServerState
+from uuid import uuid4
 
 from leap.soledad.common.errors import WrongCouchSchemaVersionError
 from leap.soledad.common.errors import MissingCouchConfigDocumentError
+from test_soledad.util import CouchDBTestCase
+
 
+class CouchDesignDocsTests(CouchDBTestCase):
 
-def test_wrong_couch_version_raises(db):
-    wrong_schema_version = SCHEMA_VERSION + 1
-    db.database.create(
-        {'_id': CONFIG_DOC_ID, SCHEMA_VERSION_KEY: wrong_schema_version})
-    with pytest.raises(WrongCouchSchemaVersionError):
-        CouchServerState(db.couch_url, create_cmd='/bin/echo',
-                         check_schema_versions=True)
+    def setUp(self):
+        CouchDBTestCase.setUp(self)
+        self.db = self.couch_server.create('user-' + uuid4().hex)
+        self.addCleanup(self.delete_db, self.db.name)
 
+    def test_wrong_couch_version_raises(self):
+        wrong_schema_version = SCHEMA_VERSION + 1
+        self.db.create(
+            {'_id': CONFIG_DOC_ID, SCHEMA_VERSION_KEY: wrong_schema_version})
+        with pytest.raises(WrongCouchSchemaVersionError):
+            CouchServerState(self.couch_url, create_cmd='/bin/echo',
+                             check_schema_versions=True)
 
-def test_missing_config_doc_raises(db):
-    db.database.create({})
-    with pytest.raises(MissingCouchConfigDocumentError):
-        CouchServerState(db.couch_url, create_cmd='/bin/echo',
-                         check_schema_versions=True)
+    def test_missing_config_doc_raises(self):
+        self.db.create({})
+        with pytest.raises(MissingCouchConfigDocumentError):
+            CouchServerState(self.couch_url, create_cmd='/bin/echo',
+                             check_schema_versions=True)
diff --git a/testing/tests/perf/conftest.py b/testing/tests/perf/conftest.py
deleted file mode 100644
index 6fa6b2c0..00000000
--- a/testing/tests/perf/conftest.py
+++ /dev/null
@@ -1,249 +0,0 @@
-import json
-import os
-import pytest
-import requests
-import random
-import base64
-import signal
-import time
-
-from hashlib import sha512
-from uuid import uuid4
-from subprocess import call
-from urlparse import urljoin
-from twisted.internet import threads, reactor
-
-from leap.soledad.client import Soledad
-from leap.soledad.common.couch import CouchDatabase
-
-
-# we have to manually setup the events server in order to be able to signal
-# events. This is usually done by the enclosing application using soledad
-# client (i.e. bitmask client).
-from leap.common.events import server
-server.ensure_server()
-
-
-def pytest_addoption(parser):
-    parser.addoption(
-        "--couch-url", type="string", default="http://127.0.0.1:5984",
-        help="the url for the couch server to be used during tests")
-    parser.addoption(
-        "--num-docs", type="int", default=100,
-        help="the number of documents to use in performance tests")
-
-
-#
-# default options for all tests
-#
-
-DEFAULT_PASSPHRASE = '123'
-
-DEFAULT_URL = 'http://127.0.0.1:2424'
-DEFAULT_PRIVKEY = 'soledad_privkey.pem'
-DEFAULT_CERTKEY = 'soledad_certkey.pem'
-DEFAULT_TOKEN = 'an-auth-token'
-
-
-@pytest.fixture()
-def payload():
-    def generate(size):
-        random.seed(1337)  # same seed to avoid different bench results
-        payload_bytes = bytearray(random.getrandbits(8) for _ in xrange(size))
-        # encode as base64 to avoid ascii encode/decode errors
-        return base64.b64encode(payload_bytes)[:size]  # remove b64 overhead
-    return generate
-
-
-#
-# soledad_dbs fixture: provides all databases needed by soledad server in a per
-# module scope (same databases for all tests in this module).
-#
-
-def _token_dbname():
-    dbname = 'tokens_' + \
-        str(int(time.time() / (30 * 24 * 3600)))
-    return dbname
-
-
-class SoledadDatabases(object):
-
-    def __init__(self, url):
-        self._token_db_url = urljoin(url, _token_dbname())
-        self._shared_db_url = urljoin(url, 'shared')
-
-    def setup(self, uuid):
-        self._create_dbs()
-        self._add_token(uuid)
-
-    def _create_dbs(self):
-        requests.put(self._token_db_url)
-        requests.put(self._shared_db_url)
-
-    def _add_token(self, uuid):
-        token = sha512(DEFAULT_TOKEN).hexdigest()
-        content = {'type': 'Token', 'user_id': uuid}
-        requests.put(
-            self._token_db_url + '/' + token, data=json.dumps(content))
-
-    def teardown(self):
-        requests.delete(self._token_db_url)
-        requests.delete(self._shared_db_url)
-
-
-@pytest.fixture()
-def soledad_dbs(request):
-    couch_url = request.config.option.couch_url
-
-    def create(uuid):
-        db = SoledadDatabases(couch_url)
-        request.addfinalizer(db.teardown)
-        return db.setup(uuid)
-    return create
-
-
-#
-# remote_db fixture: provides an empty database for a given user in a per
-# function scope.
-#
-
-class UserDatabase(object):
-
-    def __init__(self, url, uuid):
-        self._remote_db_url = urljoin(url, 'user-%s' % uuid)
-
-    def setup(self):
-        return CouchDatabase.open_database(
-            url=self._remote_db_url, create=True, replica_uid=None)
-
-    def teardown(self):
-        requests.delete(self._remote_db_url)
-
-
-@pytest.fixture()
-def remote_db(request):
-    couch_url = request.config.option.couch_url
-
-    def create(uuid):
-        db = UserDatabase(couch_url, uuid)
-        request.addfinalizer(db.teardown)
-        return db.setup()
-    return create
-
-
-def get_pid(pidfile):
-    if not os.path.isfile(pidfile):
-        return 0
-    try:
-        with open(pidfile) as f:
-            return int(f.read())
-    except IOError:
-        return 0
-
-
-#
-# soledad_server fixture: provides a running soledad server in a per module
-# context (same soledad server for all tests in this module).
-#
-
-class SoledadServer(object):
-
-    def __init__(self, tmpdir_factory, couch_url):
-        tmpdir = tmpdir_factory.mktemp('soledad-server')
-        self._pidfile = os.path.join(tmpdir.strpath, 'soledad-server.pid')
-        self._logfile = os.path.join(tmpdir.strpath, 'soledad-server.log')
-        self._couch_url = couch_url
-
-    def start(self):
-        self._create_conf_file()
-        # start the server
-        call([
-            'twistd',
-            '--logfile=%s' % self._logfile,
-            '--pidfile=%s' % self._pidfile,
-            'web',
-            '--wsgi=leap.soledad.server.application.wsgi_application',
-            '--port=2424'
-        ])
-
-    def _create_conf_file(self):
-        if not os.access('/etc', os.W_OK):
-            return
-        if not os.path.isdir('/etc/soledad'):
-            os.mkdir('/etc/soledad')
-        with open('/etc/soledad/soledad-server.conf', 'w') as f:
-            content = '[soledad-server]\ncouch_url = %s' % self._couch_url
-            f.write(content)
-
-    def stop(self):
-        pid = get_pid(self._pidfile)
-        os.kill(pid, signal.SIGKILL)
-
-
-@pytest.fixture(scope='module')
-def soledad_server(tmpdir_factory, request):
-    couch_url = request.config.option.couch_url
-    server = SoledadServer(tmpdir_factory, couch_url)
-    server.start()
-    request.addfinalizer(server.stop)
-    return server
-
-
-@pytest.fixture()
-def txbenchmark(benchmark):
-    def blockOnThread(*args, **kwargs):
-        return threads.deferToThread(
-            benchmark, threads.blockingCallFromThread,
-            reactor, *args, **kwargs)
-    return blockOnThread
-
-
-@pytest.fixture()
-def txbenchmark_with_setup(benchmark):
-    def blockOnThreadWithSetup(setup, f):
-        def blocking_runner(*args, **kwargs):
-            return threads.blockingCallFromThread(reactor, f, *args, **kwargs)
-
-        def blocking_setup():
-            args = threads.blockingCallFromThread(reactor, setup)
-            try:
-                return tuple(arg for arg in args), {}
-            except TypeError:
-                    return ((args,), {}) if args else None
-
-        def bench():
-            return benchmark.pedantic(blocking_runner, setup=blocking_setup,
-                                      rounds=4, warmup_rounds=1)
-        return threads.deferToThread(bench)
-    return blockOnThreadWithSetup
-
-
-#
-# soledad_client fixture: provides a clean soledad client for a test function.
-#
-
-@pytest.fixture()
-def soledad_client(tmpdir, soledad_server, remote_db, soledad_dbs, request):
-    passphrase = DEFAULT_PASSPHRASE
-    server_url = DEFAULT_URL
-    token = DEFAULT_TOKEN
-    default_uuid = uuid4().hex
-    remote_db(default_uuid)
-    soledad_dbs(default_uuid)
-
-    # get a soledad instance
-    def create():
-        secrets_path = os.path.join(tmpdir.strpath, '%s.secret' % uuid4().hex)
-        local_db_path = os.path.join(tmpdir.strpath, '%s.db' % uuid4().hex)
-        soledad_client = Soledad(
-            default_uuid,
-            unicode(passphrase),
-            secrets_path=secrets_path,
-            local_db_path=local_db_path,
-            server_url=server_url,
-            cert_file=None,
-            auth_token=token,
-            defer_encryption=True)
-        request.addfinalizer(soledad_client.close)
-        return soledad_client
-    return create
diff --git a/testing/tests/perf/test_crypto.py b/testing/tests/perf/test_crypto.py
deleted file mode 100644
index be00560b..00000000
--- a/testing/tests/perf/test_crypto.py
+++ /dev/null
@@ -1,81 +0,0 @@
-import pytest
-import json
-from uuid import uuid4
-from leap.soledad.common.document import SoledadDocument
-from leap.soledad.client.crypto import encrypt_sym
-from leap.soledad.client.crypto import decrypt_sym
-
-
-def create_doc_encryption(size):
-    @pytest.mark.benchmark(group="test_crypto_encrypt_doc")
-    def test_doc_encryption(soledad_client, benchmark, payload):
-        crypto = soledad_client()._crypto
-
-        DOC_CONTENT = {'payload': payload(size)}
-        doc = SoledadDocument(
-            doc_id=uuid4().hex, rev='rev',
-            json=json.dumps(DOC_CONTENT))
-
-        benchmark(crypto.encrypt_doc, doc)
-    return test_doc_encryption
-
-
-def create_doc_decryption(size):
-    @pytest.mark.benchmark(group="test_crypto_decrypt_doc")
-    def test_doc_decryption(soledad_client, benchmark, payload):
-        crypto = soledad_client()._crypto
-
-        DOC_CONTENT = {'payload': payload(size)}
-        doc = SoledadDocument(
-            doc_id=uuid4().hex, rev='rev',
-            json=json.dumps(DOC_CONTENT))
-        encrypted_doc = crypto.encrypt_doc(doc)
-        doc.set_json(encrypted_doc)
-
-        benchmark(crypto.decrypt_doc, doc)
-    return test_doc_decryption
-
-
-test_encrypt_doc_10k = create_doc_encryption(10*1000)
-test_encrypt_doc_100k = create_doc_encryption(100*1000)
-test_encrypt_doc_500k = create_doc_encryption(500*1000)
-test_encrypt_doc_1M = create_doc_encryption(1000*1000)
-test_encrypt_doc_10M = create_doc_encryption(10*1000*1000)
-test_encrypt_doc_50M = create_doc_encryption(50*1000*1000)
-test_decrypt_doc_10k = create_doc_decryption(10*1000)
-test_decrypt_doc_100k = create_doc_decryption(100*1000)
-test_decrypt_doc_500k = create_doc_decryption(500*1000)
-test_decrypt_doc_1M = create_doc_decryption(1000*1000)
-test_decrypt_doc_10M = create_doc_decryption(10*1000*1000)
-test_decrypt_doc_50M = create_doc_decryption(50*1000*1000)
-
-
-def create_raw_encryption(size):
-    @pytest.mark.benchmark(group="test_crypto_raw_encrypt")
-    def test_raw_encrypt(benchmark, payload):
-        key = payload(32)
-        benchmark(encrypt_sym, payload(size), key)
-    return test_raw_encrypt
-
-
-def create_raw_decryption(size):
-    @pytest.mark.benchmark(group="test_crypto_raw_decrypt")
-    def test_raw_decrypt(benchmark, payload):
-        key = payload(32)
-        iv, ciphertext = encrypt_sym(payload(size), key)
-        benchmark(decrypt_sym, ciphertext, key, iv)
-    return test_raw_decrypt
-
-
-test_encrypt_raw_10k = create_raw_encryption(10*1000)
-test_encrypt_raw_100k = create_raw_encryption(100*1000)
-test_encrypt_raw_500k = create_raw_encryption(500*1000)
-test_encrypt_raw_1M = create_raw_encryption(1000*1000)
-test_encrypt_raw_10M = create_raw_encryption(10*1000*1000)
-test_encrypt_raw_50M = create_raw_encryption(50*1000*1000)
-test_decrypt_raw_10k = create_raw_decryption(10*1000)
-test_decrypt_raw_100k = create_raw_decryption(100*1000)
-test_decrypt_raw_500k = create_raw_decryption(500*1000)
-test_decrypt_raw_1M = create_raw_decryption(1000*1000)
-test_decrypt_raw_10M = create_raw_decryption(10*1000*1000)
-test_decrypt_raw_50M = create_raw_decryption(50*1000*1000)
diff --git a/testing/tests/perf/test_encdecpool.py b/testing/tests/perf/test_encdecpool.py
deleted file mode 100644
index 77091a41..00000000
--- a/testing/tests/perf/test_encdecpool.py
+++ /dev/null
@@ -1,78 +0,0 @@
-import pytest
-import json
-from uuid import uuid4
-from twisted.internet.defer import gatherResults
-from leap.soledad.client.encdecpool import SyncEncrypterPool
-from leap.soledad.client.encdecpool import SyncDecrypterPool
-from leap.soledad.common.document import SoledadDocument
-# FIXME: test load is low due issue #7370, higher values will get out of memory
-
-
-def create_encrypt(amount, size):
-    @pytest.mark.benchmark(group="test_pool_encrypt")
-    @pytest.inlineCallbacks
-    def test(soledad_client, txbenchmark_with_setup, request, payload):
-        DOC_CONTENT = {'payload': payload(size)}
-
-        def setup():
-            client = soledad_client()
-            pool = SyncEncrypterPool(client._crypto, client._sync_db)
-            pool.start()
-            request.addfinalizer(pool.stop)
-            docs = [
-                SoledadDocument(doc_id=uuid4().hex, rev='rev',
-                                json=json.dumps(DOC_CONTENT))
-                for _ in xrange(amount)
-            ]
-            return pool, docs
-
-        @pytest.inlineCallbacks
-        def put_and_wait(pool, docs):
-            yield gatherResults([pool.encrypt_doc(doc) for doc in docs])
-
-        yield txbenchmark_with_setup(setup, put_and_wait)
-    return test
-
-test_encdecpool_encrypt_100_10k = create_encrypt(100, 10*1000)
-test_encdecpool_encrypt_100_100k = create_encrypt(100, 100*1000)
-test_encdecpool_encrypt_100_500k = create_encrypt(100, 500*1000)
-
-
-def create_decrypt(amount, size):
-    @pytest.mark.benchmark(group="test_pool_decrypt")
-    @pytest.inlineCallbacks
-    def test(soledad_client, txbenchmark_with_setup, request, payload):
-        DOC_CONTENT = {'payload': payload(size)}
-        client = soledad_client()
-
-        def setup():
-            pool = SyncDecrypterPool(
-                client._crypto,
-                client._sync_db,
-                source_replica_uid=client._dbpool.replica_uid,
-                insert_doc_cb=lambda x, y, z: False)  # ignored
-            pool.start(amount)
-            request.addfinalizer(pool.stop)
-            crypto = client._crypto
-            docs = []
-            for _ in xrange(amount):
-                doc = SoledadDocument(
-                    doc_id=uuid4().hex, rev='rev',
-                    json=json.dumps(DOC_CONTENT))
-                encrypted_content = json.loads(crypto.encrypt_doc(doc))
-                docs.append((doc.doc_id, encrypted_content))
-            return pool, docs
-
-        def put_and_wait(pool, docs):
-            deferreds = []  # fires on completion
-            for idx, (doc_id, content) in enumerate(docs, 1):
-                deferreds.append(pool.insert_encrypted_received_doc(
-                    doc_id, 'rev', content, idx, "trans_id", idx))
-            return gatherResults(deferreds)
-
-        yield txbenchmark_with_setup(setup, put_and_wait)
-    return test
-
-test_encdecpool_decrypt_100_10k = create_decrypt(100, 10*1000)
-test_encdecpool_decrypt_100_100k = create_decrypt(100, 100*1000)
-test_encdecpool_decrypt_100_500k = create_decrypt(100, 500*1000)
diff --git a/testing/tests/server/test_server.py b/testing/tests/server/test_server.py
index 6bbcf002..6710caaf 100644
--- a/testing/tests/server/test_server.py
+++ b/testing/tests/server/test_server.py
@@ -41,7 +41,7 @@ from test_soledad.util import (
     BaseSoledadTest,
 )
 
-from leap.soledad.common import crypto
+from leap.soledad.client import _crypto
 from leap.soledad.client import Soledad
 from leap.soledad.server.config import load_configuration
 from leap.soledad.server.config import CONFIG_DEFAULTS
@@ -412,13 +412,9 @@ class EncryptedSyncTestCase(
                 self.assertEqual(soldoc.doc_id, couchdoc.doc_id)
                 self.assertEqual(soldoc.rev, couchdoc.rev)
                 couch_content = couchdoc.content.keys()
-                self.assertEqual(6, len(couch_content))
-                self.assertTrue(crypto.ENC_JSON_KEY in couch_content)
-                self.assertTrue(crypto.ENC_SCHEME_KEY in couch_content)
-                self.assertTrue(crypto.ENC_METHOD_KEY in couch_content)
-                self.assertTrue(crypto.ENC_IV_KEY in couch_content)
-                self.assertTrue(crypto.MAC_KEY in couch_content)
-                self.assertTrue(crypto.MAC_METHOD_KEY in couch_content)
+                self.assertEqual(['raw'], couch_content)
+                content = couchdoc.get_json()
+                self.assertTrue(_crypto.is_symmetrically_encrypted(content))
 
         d = sol1.get_all_docs()
         d.addCallback(_db1AssertEmptyDocList)
@@ -473,16 +469,6 @@ class EncryptedSyncTestCase(
         """
         return self._test_encrypted_sym_sync(passphrase=u'ãáàäéàëíìïóòöõúùüñç')
 
-    def test_sync_very_large_files(self):
-        """
-        Test if Soledad can sync very large files.
-        """
-        self.skipTest(
-            "Work in progress. For reference, see: "
-            "https://leap.se/code/issues/7370")
-        length = 100 * (10 ** 6)  # 100 MB
-        return self._test_encrypted_sym_sync(doc_size=length, number_of_docs=1)
-
     def test_sync_many_small_files(self):
         """
         Test if Soledad can sync many smallfiles.
diff --git a/testing/tests/sync/test_encdecpool.py b/testing/tests/sync/test_encdecpool.py
deleted file mode 100644
index 4a32885e..00000000
--- a/testing/tests/sync/test_encdecpool.py
+++ /dev/null
@@ -1,306 +0,0 @@
-# -*- coding: utf-8 -*-
-# test_encdecpool.py
-# Copyright (C) 2015 LEAP
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-"""
-Tests for encryption and decryption pool.
-"""
-import json
-from random import shuffle
-
-from mock import MagicMock
-from twisted.internet.defer import inlineCallbacks
-
-from leap.soledad.client.encdecpool import SyncEncrypterPool
-from leap.soledad.client.encdecpool import SyncDecrypterPool
-
-from leap.soledad.common.document import SoledadDocument
-from test_soledad.util import BaseSoledadTest
-from twisted.internet import defer
-
-DOC_ID = "mydoc"
-DOC_REV = "rev"
-DOC_CONTENT = {'simple': 'document'}
-
-
-class TestSyncEncrypterPool(BaseSoledadTest):
-
-    def setUp(self):
-        BaseSoledadTest.setUp(self)
-        crypto = self._soledad._crypto
-        sync_db = self._soledad._sync_db
-        self._pool = SyncEncrypterPool(crypto, sync_db)
-        self._pool.start()
-
-    def tearDown(self):
-        self._pool.stop()
-        BaseSoledadTest.tearDown(self)
-
-    @inlineCallbacks
-    def test_get_encrypted_doc_returns_none(self):
-        """
-        Test that trying to get an encrypted doc from the pool returns None if
-        the document was never added for encryption.
-        """
-        doc = yield self._pool.get_encrypted_doc(DOC_ID, DOC_REV)
-        self.assertIsNone(doc)
-
-    @inlineCallbacks
-    def test_encrypt_doc_and_get_it_back(self):
-        """
-        Test that the pool actually encrypts a document added to the queue.
-        """
-        doc = SoledadDocument(
-            doc_id=DOC_ID, rev=DOC_REV, json=json.dumps(DOC_CONTENT))
-
-        yield self._pool.encrypt_doc(doc)
-        encrypted = yield self._pool.get_encrypted_doc(DOC_ID, DOC_REV)
-
-        self.assertIsNotNone(encrypted)
-
-
-class TestSyncDecrypterPool(BaseSoledadTest):
-
-    def _insert_doc_cb(self, doc, gen, trans_id):
-        """
-        Method used to mock the sync's return_doc_cb callback.
-        """
-        self._inserted_docs.append((doc, gen, trans_id))
-
-    def _setup_pool(self, sync_db=None):
-        sync_db = sync_db or self._soledad._sync_db
-        return SyncDecrypterPool(
-            self._soledad._crypto,
-            sync_db,
-            source_replica_uid=self._soledad._dbpool.replica_uid,
-            insert_doc_cb=self._insert_doc_cb)
-
-    def setUp(self):
-        BaseSoledadTest.setUp(self)
-        # setup the pool
-        self._pool = self._setup_pool()
-        # reset the inserted docs mock
-        self._inserted_docs = []
-
-    def tearDown(self):
-        if self._pool.running:
-            self._pool.stop()
-        BaseSoledadTest.tearDown(self)
-
-    def test_insert_received_doc(self):
-        """
-        Test that one document added to the pool is inserted using the
-        callback.
-        """
-        self._pool.start(1)
-        self._pool.insert_received_doc(
-            DOC_ID, DOC_REV, "{}", 1, "trans_id", 1)
-
-        def _assert_doc_was_inserted(_):
-            self.assertEqual(
-                self._inserted_docs,
-                [(SoledadDocument(DOC_ID, DOC_REV, "{}"), 1, u"trans_id")])
-
-        self._pool.deferred.addCallback(_assert_doc_was_inserted)
-        return self._pool.deferred
-
-    def test_looping_control(self):
-        """
-        Start and stop cleanly.
-        """
-        self._pool.start(10)
-        self.assertTrue(self._pool.running)
-        self._pool.stop()
-        self.assertFalse(self._pool.running)
-        self.assertTrue(self._pool.deferred.called)
-
-    def test_sync_id_col_is_created_if_non_existing_in_docs_recvd_table(self):
-        """
-        Test that docs_received table is migrated, and has the sync_id column
-        """
-        mock_run_query = MagicMock(return_value=defer.succeed(None))
-        mock_sync_db = MagicMock()
-        mock_sync_db.runQuery = mock_run_query
-        pool = self._setup_pool(mock_sync_db)
-        d = pool.start(10)
-        pool.stop()
-
-        def assert_trial_to_create_sync_id_column(_):
-            mock_run_query.assert_called_once_with(
-                "ALTER TABLE docs_received ADD COLUMN sync_id")
-
-        d.addCallback(assert_trial_to_create_sync_id_column)
-        return d
-
-    def test_insert_received_doc_many(self):
-        """
-        Test that many documents added to the pool are inserted using the
-        callback.
-        """
-        many = 100
-        self._pool.start(many)
-
-        # insert many docs in the pool
-        for i in xrange(many):
-            gen = idx = i + 1
-            doc_id = "doc_id: %d" % idx
-            rev = "rev: %d" % idx
-            content = {'idx': idx}
-            trans_id = "trans_id: %d" % idx
-            self._pool.insert_received_doc(
-                doc_id, rev, content, gen, trans_id, idx)
-
-        def _assert_doc_was_inserted(_):
-            self.assertEqual(many, len(self._inserted_docs))
-            idx = 1
-            for doc, gen, trans_id in self._inserted_docs:
-                expected_gen = idx
-                expected_doc_id = "doc_id: %d" % idx
-                expected_rev = "rev: %d" % idx
-                expected_content = json.dumps({'idx': idx})
-                expected_trans_id = "trans_id: %d" % idx
-
-                self.assertEqual(expected_doc_id, doc.doc_id)
-                self.assertEqual(expected_rev, doc.rev)
-                self.assertEqual(expected_content, json.dumps(doc.content))
-                self.assertEqual(expected_gen, gen)
-                self.assertEqual(expected_trans_id, trans_id)
-
-                idx += 1
-
-        self._pool.deferred.addCallback(_assert_doc_was_inserted)
-        return self._pool.deferred
-
-    def test_insert_encrypted_received_doc(self):
-        """
-        Test that one encrypted document added to the pool is decrypted and
-        inserted using the callback.
-        """
-        crypto = self._soledad._crypto
-        doc = SoledadDocument(
-            doc_id=DOC_ID, rev=DOC_REV, json=json.dumps(DOC_CONTENT))
-        encrypted_content = json.loads(crypto.encrypt_doc(doc))
-
-        # insert the encrypted document in the pool
-        self._pool.start(1)
-        self._pool.insert_encrypted_received_doc(
-            DOC_ID, DOC_REV, encrypted_content, 1, "trans_id", 1)
-
-        def _assert_doc_was_decrypted_and_inserted(_):
-            self.assertEqual(1, len(self._inserted_docs))
-            self.assertEqual(self._inserted_docs, [(doc, 1, u"trans_id")])
-
-        self._pool.deferred.addCallback(
-            _assert_doc_was_decrypted_and_inserted)
-        return self._pool.deferred
-
-    @inlineCallbacks
-    def test_processing_order(self):
-        """
-        This test ensures that processing of documents only occur if there is
-        a sequence in place.
-        """
-        crypto = self._soledad._crypto
-
-        docs = []
-        for i in xrange(1, 10):
-            i = str(i)
-            doc = SoledadDocument(
-                doc_id=DOC_ID + i, rev=DOC_REV + i,
-                json=json.dumps(DOC_CONTENT))
-            encrypted_content = json.loads(crypto.encrypt_doc(doc))
-            docs.append((doc, encrypted_content))
-
-        # insert the encrypted document in the pool
-        yield self._pool.start(10)  # pool is expecting to process 10 docs
-        self._pool._loop.stop()  # we are processing manually
-        # first three arrives, forming a sequence
-        for i, (doc, encrypted_content) in enumerate(docs[:3]):
-            gen = idx = i + 1
-            yield self._pool.insert_encrypted_received_doc(
-                doc.doc_id, doc.rev, encrypted_content, gen, "trans_id", idx)
-
-        # last one arrives alone, so it can't be processed
-        doc, encrypted_content = docs[-1]
-        yield self._pool.insert_encrypted_received_doc(
-            doc.doc_id, doc.rev, encrypted_content, 10, "trans_id", 10)
-
-        yield self._pool._decrypt_and_recurse()
-
-        self.assertEqual(3, self._pool._processed_docs)
-
-    def test_insert_encrypted_received_doc_many(self, many=100):
-        """
-        Test that many encrypted documents added to the pool are decrypted and
-        inserted using the callback.
-        """
-        crypto = self._soledad._crypto
-        self._pool.start(many)
-        docs = []
-
-        # insert many encrypted docs in the pool
-        for i in xrange(many):
-            gen = idx = i + 1
-            doc_id = "doc_id: %d" % idx
-            rev = "rev: %d" % idx
-            content = {'idx': idx}
-            trans_id = "trans_id: %d" % idx
-
-            doc = SoledadDocument(
-                doc_id=doc_id, rev=rev, json=json.dumps(content))
-
-            encrypted_content = json.loads(crypto.encrypt_doc(doc))
-            docs.append((doc_id, rev, encrypted_content, gen,
-                         trans_id, idx))
-        shuffle(docs)
-
-        for doc in docs:
-            self._pool.insert_encrypted_received_doc(*doc)
-
-        def _assert_docs_were_decrypted_and_inserted(_):
-            self.assertEqual(many, len(self._inserted_docs))
-            idx = 1
-            for doc, gen, trans_id in self._inserted_docs:
-                expected_gen = idx
-                expected_doc_id = "doc_id: %d" % idx
-                expected_rev = "rev: %d" % idx
-                expected_content = json.dumps({'idx': idx})
-                expected_trans_id = "trans_id: %d" % idx
-
-                self.assertEqual(expected_doc_id, doc.doc_id)
-                self.assertEqual(expected_rev, doc.rev)
-                self.assertEqual(expected_content, json.dumps(doc.content))
-                self.assertEqual(expected_gen, gen)
-                self.assertEqual(expected_trans_id, trans_id)
-
-                idx += 1
-
-        self._pool.deferred.addCallback(
-            _assert_docs_were_decrypted_and_inserted)
-        return self._pool.deferred
-
-    @inlineCallbacks
-    def test_pool_reuse(self):
-        """
-        The pool is reused between syncs, this test verifies that
-        reusing is fine.
-        """
-        for i in xrange(3):
-            yield self.test_insert_encrypted_received_doc_many(5)
-            self._inserted_docs = []
-            decrypted_docs = yield self._pool._get_docs(encrypted=False)
-            # check that decrypted docs staging is clean
-            self.assertEquals([], decrypted_docs)
-            self._pool.stop()
diff --git a/testing/tests/sync/test_sqlcipher_sync.py b/testing/tests/sync/test_sqlcipher_sync.py
index 3cbefc8b..26f63a40 100644
--- a/testing/tests/sync/test_sqlcipher_sync.py
+++ b/testing/tests/sync/test_sqlcipher_sync.py
@@ -27,8 +27,6 @@ from leap.soledad.common.l2db import sync
 from leap.soledad.common.l2db import vectorclock
 from leap.soledad.common.l2db import errors
 
-from leap.soledad.common.crypto import ENC_SCHEME_KEY
-from leap.soledad.client.crypto import decrypt_doc_dict
 from leap.soledad.client.http_target import SoledadHTTPSyncTarget
 
 from test_soledad import u1db_tests as tests
@@ -545,13 +543,7 @@ class SQLCipherDatabaseSyncTests(
         self.assertFalse(doc2.has_conflicts)
         self.sync(self.db2, db3)
         doc3 = db3.get_doc('the-doc')
-        if ENC_SCHEME_KEY in doc3.content:
-            _crypto = self._soledad._crypto
-            key = _crypto.doc_passphrase(doc3.doc_id)
-            secret = _crypto.secret
-            doc3.set_json(decrypt_doc_dict(
-                doc3.content,
-                doc3.doc_id, doc3.rev, key, secret))
+
         self.assertEqual(doc4.get_json(), doc3.get_json())
         self.assertFalse(doc3.has_conflicts)
         self.db1.close()
@@ -713,15 +705,12 @@ def make_local_db_and_soledad_target(
     test.startTwistedServer()
     replica_uid = os.path.basename(path)
     db = test.request_state._create_database(replica_uid)
-    sync_db = test._soledad._sync_db
-    sync_enc_pool = test._soledad._sync_enc_pool
     st = soledad_sync_target(
         test, db._dbname,
-        source_replica_uid=source_replica_uid,
-        sync_db=sync_db,
-        sync_enc_pool=sync_enc_pool)
+        source_replica_uid=source_replica_uid)
     return db, st
 
+
 target_scenarios = [
     ('leap', {
         'create_db_and_target': make_local_db_and_soledad_target,
diff --git a/testing/tests/sync/test_sync.py b/testing/tests/sync/test_sync.py
index 5290003e..76757c5b 100644
--- a/testing/tests/sync/test_sync.py
+++ b/testing/tests/sync/test_sync.py
@@ -19,6 +19,7 @@ import threading
 import time
 
 from urlparse import urljoin
+from mock import Mock
 from twisted.internet import defer
 
 from testscenarios import TestWithScenarios
@@ -184,10 +185,9 @@ class TestSoledadDbSync(
         target = soledad_sync_target(
             self, self.db2._dbname,
             source_replica_uid=self._soledad._dbpool.replica_uid)
-        self.addCleanup(target.close)
         return sync.SoledadSynchronizer(
             self.db,
-            target).sync(defer_decryption=False)
+            target).sync()
 
     @defer.inlineCallbacks
     def test_db_sync(self):
@@ -211,3 +211,21 @@ class TestSoledadDbSync(
             self.db, doc2.doc_id, doc2.rev, tests.nested_doc, False)
 
     # TODO: add u1db.tests.test_sync.TestRemoteSyncIntegration
+
+
+class TestSoledadSynchronizer(BaseSoledadTest):
+
+    def setUp(self):
+        BaseSoledadTest.setUp(self)
+        self.db = Mock()
+        self.target = Mock()
+        self.synchronizer = sync.SoledadSynchronizer(
+            self.db,
+            self.target)
+
+    def test_docs_by_gen_includes_deleted(self):
+        changes = [('id', 'gen', 'trans')]
+        docs_by_gen = self.synchronizer._docs_by_gen_from_changes(changes)
+        f, args, kwargs = docs_by_gen[0][0]
+        self.assertIn('include_deleted', kwargs)
+        self.assertTrue(kwargs['include_deleted'])
diff --git a/testing/tests/sync/test_sync_deferred.py b/testing/tests/sync/test_sync_deferred.py
deleted file mode 100644
index 4948aaf8..00000000
--- a/testing/tests/sync/test_sync_deferred.py
+++ /dev/null
@@ -1,196 +0,0 @@
-# test_sync_deferred.py
-# Copyright (C) 2014 LEAP
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-"""
-Test Leap backend bits: sync with deferred encryption/decryption.
-"""
-import time
-import os
-import random
-import string
-import shutil
-
-from urlparse import urljoin
-
-from twisted.internet import defer
-
-from leap.soledad.common import couch
-
-from leap.soledad.client import sync
-from leap.soledad.client.sqlcipher import SQLCipherOptions
-from leap.soledad.client.sqlcipher import SQLCipherDatabase
-
-from testscenarios import TestWithScenarios
-
-from test_soledad import u1db_tests as tests
-from test_soledad.util import ADDRESS
-from test_soledad.util import SoledadWithCouchServerMixin
-from test_soledad.util import make_soledad_app
-from test_soledad.util import soledad_sync_target
-
-
-# Just to make clear how this test is different... :)
-DEFER_DECRYPTION = True
-
-WAIT_STEP = 1
-MAX_WAIT = 10
-DBPASS = "pass"
-
-
-class BaseSoledadDeferredEncTest(SoledadWithCouchServerMixin):
-
-    """
-    Another base class for testing the deferred encryption/decryption during
-    the syncs, using the intermediate database.
-    """
-    defer_sync_encryption = True
-
-    def setUp(self):
-        SoledadWithCouchServerMixin.setUp(self)
-        self.startTwistedServer()
-        # config info
-        self.db1_file = os.path.join(self.tempdir, "db1.u1db")
-        os.unlink(self.db1_file)
-        self.db_pass = DBPASS
-        self.email = ADDRESS
-
-        # get a random prefix for each test, so we do not mess with
-        # concurrency during initialization and shutting down of
-        # each local db.
-        self.rand_prefix = ''.join(
-            map(lambda x: random.choice(string.ascii_letters), range(6)))
-
-        # open test dbs: db1 will be the local sqlcipher db (which
-        # instantiates a syncdb). We use the self._soledad instance that was
-        # already created on some setUp method.
-        import binascii
-        tohex = binascii.b2a_hex
-        key = tohex(self._soledad.secrets.get_local_storage_key())
-        sync_db_key = tohex(self._soledad.secrets.get_sync_db_key())
-        dbpath = self._soledad._local_db_path
-
-        self.opts = SQLCipherOptions(
-            dbpath, key, is_raw_key=True, create=False,
-            defer_encryption=True, sync_db_key=sync_db_key)
-        self.db1 = SQLCipherDatabase(self.opts)
-
-        self.db2 = self.request_state._create_database('test')
-
-    def tearDown(self):
-        # XXX should not access "private" attrs
-        shutil.rmtree(os.path.dirname(self._soledad._local_db_path))
-        SoledadWithCouchServerMixin.tearDown(self)
-
-
-class SyncTimeoutError(Exception):
-
-    """
-    Dummy exception to notify timeout during sync.
-    """
-    pass
-
-
-class TestSoledadDbSyncDeferredEncDecr(
-        TestWithScenarios,
-        BaseSoledadDeferredEncTest,
-        tests.TestCaseWithServer):
-
-    """
-    Test db.sync remote sync shortcut.
-    Case with deferred encryption and decryption: using the intermediate
-    syncdb.
-    """
-
-    scenarios = [
-        ('http', {
-            'make_app_with_state': make_soledad_app,
-            'make_database_for_test': tests.make_memory_database_for_test,
-        }),
-    ]
-
-    oauth = False
-    token = True
-
-    def setUp(self):
-        """
-        Need to explicitely invoke inicialization on all bases.
-        """
-        BaseSoledadDeferredEncTest.setUp(self)
-        self.server = self.server_thread = None
-        self.syncer = None
-
-    def tearDown(self):
-        """
-        Need to explicitely invoke destruction on all bases.
-        """
-        dbsyncer = getattr(self, 'dbsyncer', None)
-        if dbsyncer:
-            dbsyncer.close()
-        BaseSoledadDeferredEncTest.tearDown(self)
-
-    def do_sync(self):
-        """
-        Perform sync using SoledadSynchronizer, SoledadSyncTarget
-        and Token auth.
-        """
-        replica_uid = self._soledad._dbpool.replica_uid
-        sync_db = self._soledad._sync_db
-        sync_enc_pool = self._soledad._sync_enc_pool
-        dbsyncer = self._soledad._dbsyncer  # Soledad.sync uses the dbsyncer
-
-        target = soledad_sync_target(
-            self, self.db2._dbname,
-            source_replica_uid=replica_uid,
-            sync_db=sync_db,
-            sync_enc_pool=sync_enc_pool)
-        self.addCleanup(target.close)
-        return sync.SoledadSynchronizer(
-            dbsyncer,
-            target).sync(defer_decryption=True)
-
-    def wait_for_sync(self):
-        """
-        Wait for sync to finish.
-        """
-        wait = 0
-        syncer = self.syncer
-        if syncer is not None:
-            while syncer.syncing:
-                time.sleep(WAIT_STEP)
-                wait += WAIT_STEP
-                if wait >= MAX_WAIT:
-                    raise SyncTimeoutError
-
-    @defer.inlineCallbacks
-    def test_db_sync(self):
-        """
-        Test sync.
-
-        Adapted to check for encrypted content.
-        """
-        doc1 = self.db1.create_doc_from_json(tests.simple_doc)
-        doc2 = self.db2.create_doc_from_json(tests.nested_doc)
-        local_gen_before_sync = yield self.do_sync()
-
-        gen, _, changes = self.db1.whats_changed(local_gen_before_sync)
-        self.assertEqual(1, len(changes))
-
-        self.assertEqual(doc2.doc_id, changes[0][0])
-        self.assertEqual(1, gen - local_gen_before_sync)
-
-        self.assertGetEncryptedDoc(
-            self.db2, doc1.doc_id, doc1.rev, tests.simple_doc, False)
-        self.assertGetEncryptedDoc(
-            self.db1, doc2.doc_id, doc2.rev, tests.nested_doc, False)
diff --git a/testing/tests/sync/test_sync_mutex.py b/testing/tests/sync/test_sync_mutex.py
index 2626ab2a..432a3cd2 100644
--- a/testing/tests/sync/test_sync_mutex.py
+++ b/testing/tests/sync/test_sync_mutex.py
@@ -47,7 +47,7 @@ from test_soledad.util import soledad_sync_target
 _old_sync = SoledadSynchronizer.sync
 
 
-def _timed_sync(self, defer_decryption=True):
+def _timed_sync(self):
     t = time.time()
 
     sync_id = uuid.uuid4()
@@ -62,10 +62,11 @@ def _timed_sync(self, defer_decryption=True):
         self.source.sync_times[sync_id]['end'] = t
         return passthrough
 
-    d = _old_sync(self, defer_decryption=defer_decryption)
+    d = _old_sync(self)
     d.addBoth(_store_finish_time)
     return d
 
+
 SoledadSynchronizer.sync = _timed_sync
 
 # -- end of monkey-patching
diff --git a/testing/tests/sync/test_sync_target.py b/testing/tests/sync/test_sync_target.py
index 964468ce..6ce9a5c5 100644
--- a/testing/tests/sync/test_sync_target.py
+++ b/testing/tests/sync/test_sync_target.py
@@ -30,10 +30,11 @@ from testscenarios import TestWithScenarios
 from twisted.internet import defer
 
 from leap.soledad.client import http_target as target
-from leap.soledad.client import crypto
+from leap.soledad.client.http_target.fetch_protocol import DocStreamReceiver
 from leap.soledad.client.sqlcipher import SQLCipherU1DBSync
 from leap.soledad.client.sqlcipher import SQLCipherOptions
 from leap.soledad.client.sqlcipher import SQLCipherDatabase
+from leap.soledad.client import _crypto
 
 from leap.soledad.common import l2db
 
@@ -44,6 +45,7 @@ from test_soledad.util import make_soledad_app
 from test_soledad.util import make_token_soledad_app
 from test_soledad.util import make_soledad_document_for_test
 from test_soledad.util import soledad_sync_target
+from twisted.trial import unittest
 from test_soledad.util import SoledadWithCouchServerMixin
 from test_soledad.util import ADDRESS
 from test_soledad.util import SQLCIPHER_SCENARIOS
@@ -53,92 +55,69 @@ from test_soledad.util import SQLCIPHER_SCENARIOS
 # The following tests come from `u1db.tests.test_remote_sync_target`.
 # -----------------------------------------------------------------------------
 
-class TestSoledadParseReceivedDocResponse(SoledadWithCouchServerMixin):
+class TestSoledadParseReceivedDocResponse(unittest.TestCase):
 
     """
     Some tests had to be copied to this class so we can instantiate our own
     target.
     """
 
-    def setUp(self):
-        SoledadWithCouchServerMixin.setUp(self)
-        creds = {'token': {
-            'uuid': 'user-uuid',
-            'token': 'auth-token',
-        }}
-        self.target = target.SoledadHTTPSyncTarget(
-            self.couch_url,
-            uuid4().hex,
-            creds,
-            self._soledad._crypto,
-            None)
-
-    def tearDown(self):
-        self.target.close()
-        SoledadWithCouchServerMixin.tearDown(self)
+    def parse(self, stream):
+        parser = DocStreamReceiver(None, None, lambda *_: defer.succeed(42))
+        parser.dataReceived(stream)
+        parser.finish()
 
     def test_extra_comma(self):
-        """
-        Test adapted to use encrypted content.
-        """
         doc = SoledadDocument('i', rev='r')
-        doc.content = {}
-        _crypto = self._soledad._crypto
-        key = _crypto.doc_passphrase(doc.doc_id)
-        secret = _crypto.secret
+        doc.content = {'a': 'b'}
 
-        enc_json = crypto.encrypt_docstr(
-            doc.get_json(), doc.doc_id, doc.rev,
-            key, secret)
+        encrypted_docstr = _crypto.SoledadCrypto('safe').encrypt_doc(doc)
 
         with self.assertRaises(l2db.errors.BrokenSyncStream):
-            self.target._parse_received_doc_response("[\r\n{},\r\n]")
+            self.parse("[\r\n{},\r\n]")
 
         with self.assertRaises(l2db.errors.BrokenSyncStream):
-            self.target._parse_received_doc_response(
+            self.parse(
                 ('[\r\n{},\r\n{"id": "i", "rev": "r", ' +
-                 '"content": %s, "gen": 3, "trans_id": "T-sid"}' +
-                 ',\r\n]') % json.dumps(enc_json))
+                 '"gen": 3, "trans_id": "T-sid"},\r\n' +
+                 '%s,\r\n]') % encrypted_docstr)
 
     def test_wrong_start(self):
         with self.assertRaises(l2db.errors.BrokenSyncStream):
-            self.target._parse_received_doc_response("{}\r\n]")
-
-        with self.assertRaises(l2db.errors.BrokenSyncStream):
-            self.target._parse_received_doc_response("\r\n{}\r\n]")
+            self.parse("{}\r\n]")
 
         with self.assertRaises(l2db.errors.BrokenSyncStream):
-            self.target._parse_received_doc_response("")
+            self.parse("\r\n{}\r\n]")
 
     def test_wrong_end(self):
         with self.assertRaises(l2db.errors.BrokenSyncStream):
-            self.target._parse_received_doc_response("[\r\n{}")
+            self.parse("[\r\n{}")
 
         with self.assertRaises(l2db.errors.BrokenSyncStream):
-            self.target._parse_received_doc_response("[\r\n")
+            self.parse("[\r\n")
 
     def test_missing_comma(self):
         with self.assertRaises(l2db.errors.BrokenSyncStream):
-            self.target._parse_received_doc_response(
+            self.parse(
                 '[\r\n{}\r\n{"id": "i", "rev": "r", '
                 '"content": "c", "gen": 3}\r\n]')
 
     def test_no_entries(self):
         with self.assertRaises(l2db.errors.BrokenSyncStream):
-            self.target._parse_received_doc_response("[\r\n]")
+            self.parse("[\r\n]")
 
     def test_error_in_stream(self):
         with self.assertRaises(l2db.errors.BrokenSyncStream):
-            self.target._parse_received_doc_response(
+            self.parse(
                 '[\r\n{"new_generation": 0},'
                 '\r\n{"error": "unavailable"}\r\n')
 
         with self.assertRaises(l2db.errors.BrokenSyncStream):
-            self.target._parse_received_doc_response(
+            self.parse(
                 '[\r\n{"error": "unavailable"}\r\n')
 
         with self.assertRaises(l2db.errors.BrokenSyncStream):
-            self.target._parse_received_doc_response('[\r\n{"error": "?"}\r\n')
+            self.parse('[\r\n{"error": "?"}\r\n')
 
 #
 # functions for TestRemoteSyncTargets
@@ -151,13 +130,9 @@ def make_local_db_and_soledad_target(
     test.startTwistedServer()
     replica_uid = os.path.basename(path)
     db = test.request_state._create_database(replica_uid)
-    sync_db = test._soledad._sync_db
-    sync_enc_pool = test._soledad._sync_enc_pool
     st = soledad_sync_target(
         test, db._dbname,
-        source_replica_uid=source_replica_uid,
-        sync_db=sync_db,
-        sync_enc_pool=sync_enc_pool)
+        source_replica_uid=source_replica_uid)
     return db, st
 
 
@@ -188,16 +163,11 @@ class TestSoledadSyncTarget(
     def getSyncTarget(self, path=None, source_replica_uid=uuid4().hex):
         if self.port is None:
             self.startTwistedServer()
-        sync_db = self._soledad._sync_db
-        sync_enc_pool = self._soledad._sync_enc_pool
         if path is None:
             path = self.db2._dbname
         target = self.sync_target(
             self, path,
-            source_replica_uid=source_replica_uid,
-            sync_db=sync_db,
-            sync_enc_pool=sync_enc_pool)
-        self.addCleanup(target.close)
+            source_replica_uid=source_replica_uid)
         return target
 
     def setUp(self):
@@ -229,10 +199,10 @@ class TestSoledadSyncTarget(
             other_docs.append((doc.doc_id, doc.rev, doc.get_json()))
 
         doc = self.make_document('doc-here', 'replica:1', '{"value": "here"}')
+        get_doc = (lambda _: doc, (1,), {})
         new_gen, trans_id = yield remote_target.sync_exchange(
-            [(doc, 10, 'T-sid')], 'replica', last_known_generation=0,
-            last_known_trans_id=None, insert_doc_cb=receive_doc,
-            defer_decryption=False)
+            [(get_doc, 10, 'T-sid')], 'replica', last_known_generation=0,
+            last_known_trans_id=None, insert_doc_cb=receive_doc)
         self.assertEqual(1, new_gen)
         self.assertGetEncryptedDoc(
             db, 'doc-here', 'replica:1', '{"value": "here"}', False)
@@ -278,15 +248,16 @@ class TestSoledadSyncTarget(
         doc1 = self.make_document('doc-here', 'replica:1', '{"value": "here"}')
         doc2 = self.make_document('doc-here2', 'replica:1',
                                   '{"value": "here2"}')
+        get_doc1 = (lambda _: doc1, (1,), {})
+        get_doc2 = (lambda _: doc2, (2,), {})
 
         with self.assertRaises(l2db.errors.U1DBError):
             yield remote_target.sync_exchange(
-                [(doc1, 10, 'T-sid'), (doc2, 11, 'T-sud')],
+                [(get_doc1, 10, 'T-sid'), (get_doc2, 11, 'T-sud')],
                 'replica',
                 last_known_generation=0,
                 last_known_trans_id=None,
-                insert_doc_cb=receive_doc,
-                defer_decryption=False)
+                insert_doc_cb=receive_doc)
 
         self.assertGetEncryptedDoc(
             db, 'doc-here', 'replica:1', '{"value": "here"}',
@@ -297,9 +268,8 @@ class TestSoledadSyncTarget(
         # retry
         trigger_ids = []
         new_gen, trans_id = yield remote_target.sync_exchange(
-            [(doc2, 11, 'T-sud')], 'replica', last_known_generation=0,
-            last_known_trans_id=None, insert_doc_cb=receive_doc,
-            defer_decryption=False)
+            [(get_doc2, 11, 'T-sud')], 'replica', last_known_generation=0,
+            last_known_trans_id=None, insert_doc_cb=receive_doc)
         self.assertGetEncryptedDoc(
             db, 'doc-here2', 'replica:1', '{"value": "here2"}',
             False)
@@ -328,10 +298,11 @@ class TestSoledadSyncTarget(
             replica_uid_box.append(replica_uid)
 
         doc = self.make_document('doc-here', 'replica:1', '{"value": "here"}')
+        get_doc = (lambda _: doc, (1,), {})
         new_gen, trans_id = yield remote_target.sync_exchange(
-            [(doc, 10, 'T-sid')], 'replica', last_known_generation=0,
+            [(get_doc, 10, 'T-sid')], 'replica', last_known_generation=0,
             last_known_trans_id=None, insert_doc_cb=receive_doc,
-            ensure_callback=ensure_cb, defer_decryption=False)
+            ensure_callback=ensure_cb)
         self.assertEqual(1, new_gen)
         db = self.db2
         self.assertEqual(1, len(replica_uid_box))
@@ -339,6 +310,37 @@ class TestSoledadSyncTarget(
         self.assertGetEncryptedDoc(
             db, 'doc-here', 'replica:1', '{"value": "here"}', False)
 
+    @defer.inlineCallbacks
+    def test_sync_exchange_send_events(self):
+        """
+        Test for sync exchange's SOLEDAD_SYNC_SEND_STATUS event.
+        """
+        remote_target = self.getSyncTarget()
+        uuid = remote_target.uuid
+        events = []
+
+        def mocked_events(*args):
+            events.append((args))
+        self.patch(
+            target.send, '_emit_send_status', mocked_events)
+
+        doc = self.make_document('doc-here', 'replica:1', '{"value": "here"}')
+        doc2 = self.make_document('doc-here', 'replica:1', '{"value": "here"}')
+        doc3 = self.make_document('doc-here', 'replica:1', '{"value": "here"}')
+        get_doc = (lambda _: doc, (1,), {})
+        get_doc2 = (lambda _: doc2, (1,), {})
+        get_doc3 = (lambda _: doc3, (1,), {})
+        docs = [(get_doc, 10, 'T-sid'),
+                (get_doc2, 11, 'T-sid2'), (get_doc3, 12, 'T-sid3')]
+        new_gen, trans_id = yield remote_target.sync_exchange(
+            docs, 'replica', last_known_generation=0,
+            last_known_trans_id=None, insert_doc_cb=lambda _: 1,
+            ensure_callback=lambda _: 1)
+        self.assertEqual(1, new_gen)
+        self.assertEqual(4, len(events))
+        self.assertEquals([(uuid, 0, 3), (uuid, 1, 3), (uuid, 2, 3),
+                           (uuid, 3, 3)], events)
+
     def test_sync_exchange_in_stream_error(self):
         self.skipTest("bypass this test because our sync_exchange process "
                       "does not return u1db error 503 \"unavailable\" for "
@@ -421,7 +423,6 @@ class SoledadDatabaseSyncTargetTests(
 
     def tearDown(self):
         self.db.close()
-        self.st.close()
         tests.TestCaseWithServer.tearDown(self)
         SoledadWithCouchServerMixin.tearDown(self)
 
@@ -442,12 +443,12 @@ class SoledadDatabaseSyncTargetTests(
         This test was adapted to decrypt remote content before assert.
         """
         docs_by_gen = [
-            (self.make_document('doc-id', 'replica:1', tests.simple_doc), 10,
-             'T-sid')]
+            ((self.make_document,
+              ('doc-id', 'replica:1', tests.simple_doc,), {}),
+                10, 'T-sid')]
         new_gen, trans_id = yield self.st.sync_exchange(
             docs_by_gen, 'replica', last_known_generation=0,
-            last_known_trans_id=None, insert_doc_cb=self.receive_doc,
-            defer_decryption=False)
+            last_known_trans_id=None, insert_doc_cb=self.receive_doc)
         self.assertGetEncryptedDoc(
             self.db, 'doc-id', 'replica:1', tests.simple_doc, False)
         self.assertTransactionLog(['doc-id'], self.db)
@@ -465,14 +466,13 @@ class SoledadDatabaseSyncTargetTests(
         This test was adapted to decrypt remote content before assert.
         """
         docs_by_gen = [
-            (self.make_document(
-                'doc-id', 'replica:1', tests.simple_doc), 10, 'T-1'),
-            (self.make_document(
-                'doc-id2', 'replica:1', tests.nested_doc), 11, 'T-2')]
+            ((self.make_document,
+                ('doc-id', 'replica:1', tests.simple_doc), {}), 10, 'T-1'),
+            ((self.make_document,
+                ('doc-id2', 'replica:1', tests.nested_doc), {}), 11, 'T-2')]
         new_gen, trans_id = yield self.st.sync_exchange(
             docs_by_gen, 'replica', last_known_generation=0,
-            last_known_trans_id=None, insert_doc_cb=self.receive_doc,
-            defer_decryption=False)
+            last_known_trans_id=None, insert_doc_cb=self.receive_doc)
         self.assertGetEncryptedDoc(
             self.db, 'doc-id', 'replica:1', tests.simple_doc, False)
         self.assertGetEncryptedDoc(
@@ -498,8 +498,7 @@ class SoledadDatabaseSyncTargetTests(
         self.assertTransactionLog([doc.doc_id, doc2.doc_id], self.db)
         new_gen, _ = yield self.st.sync_exchange(
             [], 'other-replica', last_known_generation=0,
-            last_known_trans_id=None, insert_doc_cb=self.receive_doc,
-            defer_decryption=False)
+            last_known_trans_id=None, insert_doc_cb=self.receive_doc)
         self.assertTransactionLog([doc.doc_id, doc2.doc_id], self.db)
         self.assertEqual(2, new_gen)
         self.assertEqual(
@@ -552,7 +551,8 @@ class SoledadDatabaseSyncTargetTests(
         doc = self.db.create_doc_from_json('{}')
         edit_rev = 'replica:1|' + doc.rev
         docs_by_gen = [
-            (self.make_document(doc.doc_id, edit_rev, None), 10, 'T-sid')]
+            ((self.make_document, (doc.doc_id, edit_rev, None), {}),
+             10, 'T-sid')]
         new_gen, trans_id = yield self.st.sync_exchange(
             docs_by_gen, 'replica', last_known_generation=0,
             last_known_trans_id=None, insert_doc_cb=self.receive_doc)
@@ -571,7 +571,7 @@ class SoledadDatabaseSyncTargetTests(
         self.assertTransactionLog([doc.doc_id], self.db)
         new_doc = '{"key": "altval"}'
         docs_by_gen = [
-            (self.make_document(doc.doc_id, 'replica:1', new_doc), 10,
+            ((self.make_document, (doc.doc_id, 'replica:1', new_doc), {}), 10,
              'T-sid')]
         new_gen, _ = yield self.st.sync_exchange(
             docs_by_gen, 'replica', last_known_generation=0,
@@ -591,7 +591,7 @@ class SoledadDatabaseSyncTargetTests(
         self.assertTransactionLog([doc.doc_id], self.db)
         gen, txid = self.db._get_generation_info()
         docs_by_gen = [
-            (self.make_document(doc.doc_id, doc.rev, tests.simple_doc),
+            ((self.make_document, (doc.doc_id, doc.rev, tests.simple_doc), {}),
              10, 'T-sid')]
         new_gen, _ = yield self.st.sync_exchange(
             docs_by_gen, 'replica', last_known_generation=gen,
@@ -624,9 +624,9 @@ class SoledadDatabaseSyncTargetTests(
             [], 'other-replica', last_known_generation=0,
             last_known_trans_id=None, insert_doc_cb=self.receive_doc)
         self.assertTransactionLog([doc.doc_id, doc.doc_id], self.db)
+        self.assertEqual(2, new_gen)
         self.assertEqual(
             (doc.doc_id, doc.rev, None, 2), self.other_changes[0][:-1])
-        self.assertEqual(2, new_gen)
         if self.whitebox:
             self.assertEqual(self.db._last_exchange_log['return'],
                              {'last_gen': 2, 'docs': [(doc.doc_id, doc.rev)]})
@@ -637,7 +637,7 @@ class SoledadDatabaseSyncTargetTests(
         self.assertTransactionLog([doc.doc_id], self.db)
         new_doc = '{"key": "altval"}'
         docs_by_gen = [
-            (self.make_document(doc.doc_id, 'test:1|z:2', new_doc), 10,
+            ((self.make_document, (doc.doc_id, 'test:1|z:2', new_doc), {}), 10,
              'T-sid')]
         new_gen, _ = yield self.st.sync_exchange(
             docs_by_gen, 'other-replica', last_known_generation=0,
@@ -662,7 +662,7 @@ class SoledadDatabaseSyncTargetTests(
         self.assertTransactionLog([doc.doc_id], self.db)
         new_doc = '{"key": "altval"}'
         docs_by_gen = [
-            (self.make_document(doc.doc_id, 'test:1|z:2', new_doc), 10,
+            ((self.make_document, (doc.doc_id, 'test:1|z:2', new_doc), {}), 10,
              'T-sid')]
         new_gen, _ = yield self.st.sync_exchange(
             docs_by_gen, 'other-replica', last_known_generation=0,
@@ -683,7 +683,7 @@ class SoledadDatabaseSyncTargetTests(
         self.assertTransactionLog([doc.doc_id], self.db)
         new_doc = '{"key": "altval"}'
         docs_by_gen = [
-            (self.make_document(doc.doc_id, 'test:1|z:2', new_doc), 10,
+            ((self.make_document, (doc.doc_id, 'test:1|z:2', new_doc), {}), 10,
              'T-sid')]
         new_gen, _ = yield self.st.sync_exchange(
             docs_by_gen, 'other-replica', last_known_generation=0,
@@ -694,9 +694,9 @@ class SoledadDatabaseSyncTargetTests(
     def test_sync_exchange_converged_handling(self):
         doc = self.db.create_doc_from_json(tests.simple_doc)
         docs_by_gen = [
-            (self.make_document('new', 'other:1', '{}'), 4, 'T-foo'),
-            (self.make_document(doc.doc_id, doc.rev, doc.get_json()), 5,
-             'T-bar')]
+            ((self.make_document, ('new', 'other:1', '{}'), {}), 4, 'T-foo'),
+            ((self.make_document, (doc.doc_id, doc.rev, doc.get_json()), {}),
+                5, 'T-bar')]
         new_gen, _ = yield self.st.sync_exchange(
             docs_by_gen, 'other-replica', last_known_generation=0,
             last_known_trans_id=None, insert_doc_cb=self.receive_doc)
@@ -780,9 +780,6 @@ class SoledadDatabaseSyncTargetTests(
         self.assertEqual(expected, called)
 
 
-# Just to make clear how this test is different... :)
-DEFER_DECRYPTION = False
-
 WAIT_STEP = 1
 MAX_WAIT = 10
 DBPASS = "pass"
@@ -842,12 +839,10 @@ class TestSoledadDbSync(
         import binascii
         tohex = binascii.b2a_hex
         key = tohex(self._soledad.secrets.get_local_storage_key())
-        sync_db_key = tohex(self._soledad.secrets.get_sync_db_key())
         dbpath = self._soledad._local_db_path
 
         self.opts = SQLCipherOptions(
-            dbpath, key, is_raw_key=True, create=False,
-            defer_encryption=True, sync_db_key=sync_db_key)
+            dbpath, key, is_raw_key=True, create=False)
         self.db1 = SQLCipherDatabase(self.opts)
 
         self.db2 = self.request_state._create_database(replica_uid='test')
@@ -886,12 +881,10 @@ class TestSoledadDbSync(
                 self.opts,
                 crypto,
                 replica_uid,
-                None,
-                defer_encryption=True)
+                None)
             self.dbsyncer = dbsyncer
             return dbsyncer.sync(target_url,
-                                 creds=creds,
-                                 defer_decryption=DEFER_DECRYPTION)
+                                 creds=creds)
         else:
             return self._do_sync(self, target_name)