diff options
Diffstat (limited to 'soledad/src/leap/soledad/crypto.py')
| -rw-r--r-- | soledad/src/leap/soledad/crypto.py | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/soledad/src/leap/soledad/crypto.py b/soledad/src/leap/soledad/crypto.py index bfad66d1..6187b1ab 100644 --- a/soledad/src/leap/soledad/crypto.py +++ b/soledad/src/leap/soledad/crypto.py @@ -27,8 +27,7 @@ import hmac import hashlib -from Crypto.Cipher import AES -from Crypto.Util import Counter +from pycryptopp.cipher.aes import AES from leap.soledad import ( @@ -99,10 +98,9 @@ class SoledadCrypto(object): len(key) == 32, # 32 x 8 = 256 bits. 'Wrong key size: %s bits (must be 256 bits long).' % (len(key) * 8)) - iv = os.urandom(8) - ctr = Counter.new(64, prefix=iv) - cipher = AES.new(key=key, mode=AES.MODE_CTR, counter=ctr) - return binascii.b2a_base64(iv), cipher.encrypt(data) + iv = os.urandom(16) + ciphertext = AES(key=key, iv=iv).process(data) + return binascii.b2a_base64(iv), ciphertext # raise if method is unknown raise UnknownEncryptionMethod('Unkwnown method: %s' % method) @@ -137,9 +135,8 @@ class SoledadCrypto(object): soledad_assert( 'iv' in kwargs, 'AES-256-CTR needs an initial value.') - ctr = Counter.new(64, prefix=binascii.a2b_base64(kwargs['iv'])) - cipher = AES.new(key=key, mode=AES.MODE_CTR, counter=ctr) - return cipher.decrypt(data) + return AES( + key=key, iv=binascii.a2b_base64(kwargs['iv'])).process(data) # raise if method is unknown raise UnknownEncryptionMethod('Unkwnown method: %s' % method) |