diff options
Diffstat (limited to 'cryptography/hazmat/bindings/openssl/backend.py')
| -rw-r--r-- | cryptography/hazmat/bindings/openssl/backend.py | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/cryptography/hazmat/bindings/openssl/backend.py b/cryptography/hazmat/bindings/openssl/backend.py index b65583df..71b94abe 100644 --- a/cryptography/hazmat/bindings/openssl/backend.py +++ b/cryptography/hazmat/bindings/openssl/backend.py @@ -140,6 +140,7 @@ class _CipherContext(object): def __init__(self, backend, cipher, mode, operation): self._backend = backend + self._cipher = cipher ctx = self._backend.lib.EVP_CIPHER_CTX_new() ctx = self._backend.ffi.gc(ctx, self._backend.lib.EVP_CIPHER_CTX_free) @@ -185,9 +186,8 @@ class _CipherContext(object): self._ctx = ctx def update(self, data): - block_size = self._backend.lib.EVP_CIPHER_CTX_block_size(self._ctx) buf = self._backend.ffi.new("unsigned char[]", - len(data) + block_size - 1) + len(data) + self._cipher.block_size - 1) outlen = self._backend.ffi.new("int *") res = self._backend.lib.EVP_CipherUpdate(self._ctx, buf, outlen, data, len(data)) @@ -195,8 +195,7 @@ class _CipherContext(object): return self._backend.ffi.buffer(buf)[:outlen[0]] def finalize(self): - block_size = self._backend.lib.EVP_CIPHER_CTX_block_size(self._ctx) - buf = self._backend.ffi.new("unsigned char[]", block_size) + buf = self._backend.ffi.new("unsigned char[]", self._cipher.block_size) outlen = self._backend.ffi.new("int *") res = self._backend.lib.EVP_CipherFinal_ex(self._ctx, buf, outlen) assert res != 0 |