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authordrebs <drebs@leap.se>2013-10-04 16:30:24 -0300
committerdrebs <drebs@leap.se>2013-10-06 09:22:10 -0300
commit67c978946c29690759261070564473c74c68e6fc (patch)
treefb4deecbd75b6522f1085304aa17a7e530ca1302 /src/leap/keymanager/openpgp.py
parent4f8408f54ee5dff6706cee6c052beb1c81c51dd7 (diff)
Add option to choose cipher and digest algorithms.
Diffstat (limited to 'src/leap/keymanager/openpgp.py')
-rw-r--r--src/leap/keymanager/openpgp.py22
1 files changed, 18 insertions, 4 deletions
diff --git a/src/leap/keymanager/openpgp.py b/src/leap/keymanager/openpgp.py
index 9d8d89a1..64123318 100644
--- a/src/leap/keymanager/openpgp.py
+++ b/src/leap/keymanager/openpgp.py
@@ -433,7 +433,8 @@ class OpenPGPScheme(EncryptionScheme):
raise errors.EncryptionDecryptionFailed(
'Failed to encrypt/decrypt: %s' % stderr)
- def encrypt(self, data, pubkey, passphrase=None, sign=None):
+ def encrypt(self, data, pubkey, passphrase=None, sign=None,
+ cipher_algo='AES256'):
"""
Encrypt C{data} using public @{pubkey} and sign with C{sign} key.
@@ -443,6 +444,8 @@ class OpenPGPScheme(EncryptionScheme):
:type pubkey: OpenPGPKey
:param sign: The key used for signing.
:type sign: OpenPGPKey
+ :param cipher_algo: The cipher algorithm to use.
+ :type cipher_algo: str
:return: The encrypted data.
:rtype: str
@@ -459,7 +462,7 @@ class OpenPGPScheme(EncryptionScheme):
data, pubkey.fingerprint,
default_key=sign.key_id if sign else None,
passphrase=passphrase, symmetric=False,
- cipher_algo='AES256')
+ cipher_algo=cipher_algo)
# Here we cannot assert for correctness of sig because the sig is
# in the ciphertext.
# result.ok - (bool) indicates if the operation succeeded
@@ -517,7 +520,8 @@ class OpenPGPScheme(EncryptionScheme):
gpgutil = GPGUtilities(gpg)
return gpgutil.is_encrypted_asym(data)
- def sign(self, data, privkey):
+ def sign(self, data, privkey, digest_algo='SHA512', clearsign=False,
+ detach=True, binary=False):
"""
Sign C{data} with C{privkey}.
@@ -526,6 +530,14 @@ class OpenPGPScheme(EncryptionScheme):
:param privkey: The private key to be used to sign.
:type privkey: OpenPGPKey
+ :param digest_algo: The hash digest to use.
+ :type digest_algo: str
+ :param clearsign: If True, create a cleartext signature.
+ :type clearsign: bool
+ :param detach: If True, create a detached signature.
+ :type detach: bool
+ :param binary: If True, do not ascii armour the output.
+ :type binary: bool
:return: The ascii-armored signed data.
:rtype: str
@@ -536,7 +548,9 @@ class OpenPGPScheme(EncryptionScheme):
# result.fingerprint - contains the fingerprint of the key used to
# sign.
with self._temporary_gpgwrapper(privkey) as gpg:
- result = gpg.sign(data, default_key=privkey.key_id)
+ result = gpg.sign(data, default_key=privkey.key_id,
+ digest_algo=digest_algo, clearsign=clearsign,
+ detach=detach, binary=binary)
rfprint = privkey.fingerprint
privkey = gpg.list_keys(secret=True).pop()
kfprint = privkey['fingerprint']