diff options
Diffstat (limited to 'cryptography/hazmat/bindings/openssl/backend.py')
| -rw-r--r-- | cryptography/hazmat/bindings/openssl/backend.py | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/cryptography/hazmat/bindings/openssl/backend.py b/cryptography/hazmat/bindings/openssl/backend.py index 635d6a0c..8de37d5b 100644 --- a/cryptography/hazmat/bindings/openssl/backend.py +++ b/cryptography/hazmat/bindings/openssl/backend.py @@ -138,9 +138,23 @@ class _CipherContext(object): iv_nonce = mode.nonce else: iv_nonce = self._backend.ffi.NULL + # begin init with cipher and operation type res = self._backend.lib.EVP_CipherInit_ex(ctx, evp_cipher, self._backend.ffi.NULL, - cipher.key, iv_nonce, + self._backend.ffi.NULL, + self._backend.ffi.NULL, + operation) + assert res != 0 + # set the key length to handle variable key ciphers + res = self._backend.lib.EVP_CIPHER_CTX_set_key_length( + ctx, len(cipher.key) + ) + assert res != 0 + # pass key/iv + res = self._backend.lib.EVP_CipherInit_ex(ctx, self._backend.ffi.NULL, + self._backend.ffi.NULL, + cipher.key, + iv_nonce, operation) assert res != 0 # We purposely disable padding here as it's handled higher up in the |