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| author | Paul Kehrer <paul.l.kehrer@gmail.com> | 2013-10-19 16:01:14 -0500 |
|---|---|---|
| committer | Paul Kehrer <paul.l.kehrer@gmail.com> | 2013-10-19 16:01:14 -0500 |
| commit | 3b8729006b9f2778158554d3699c05babb0c6489 (patch) | |
| tree | 1f483f8aff550f71f6a2ab8aaa219d82db624a9c | |
| parent | c113b325c68834d577af0d245bd32c7407877a44 (diff) | |
| download | cryptography-3b8729006b9f2778158554d3699c05babb0c6489.tar.gz cryptography-3b8729006b9f2778158554d3699c05babb0c6489.tar.bz2 cryptography-3b8729006b9f2778158554d3699c05babb0c6489.zip | |
fix #140. properly size char buffer for encryption
| -rw-r--r-- | cryptography/bindings/openssl/api.py | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/cryptography/bindings/openssl/api.py b/cryptography/bindings/openssl/api.py index 30f95b84..86937cf8 100644 --- a/cryptography/bindings/openssl/api.py +++ b/cryptography/bindings/openssl/api.py @@ -126,7 +126,8 @@ class API(object): return ctx def update_encrypt_context(self, ctx, plaintext): - buf = self.ffi.new("unsigned char[]", len(plaintext)) + block_size = self.lib.EVP_CIPHER_CTX_block_size(ctx) + buf = self.ffi.new("unsigned char[]", len(plaintext) + block_size - 1) outlen = self.ffi.new("int *") res = self.lib.EVP_EncryptUpdate( ctx, buf, outlen, plaintext, len(plaintext) @@ -135,8 +136,7 @@ class API(object): return self.ffi.buffer(buf)[:outlen[0]] def finalize_encrypt_context(self, ctx): - cipher = self.lib.EVP_CIPHER_CTX_cipher(ctx) - block_size = self.lib.EVP_CIPHER_block_size(cipher) + block_size = self.lib.EVP_CIPHER_CTX_block_size(ctx) buf = self.ffi.new("unsigned char[]", block_size) outlen = self.ffi.new("int *") res = self.lib.EVP_EncryptFinal_ex(ctx, buf, outlen) |