saymrwulf/cryptography
1
0
Fork 0
mirror of https://github.com/saymrwulf/cryptography.git synced 2026-05-14 20:37:55 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Fixed

Browse source
This commit is contained in:
Alex Gaynor 2013-11-05 16:18:45 -08:00
parent 0b1e66358e
commit dc043b1e15
2 changed files with 25 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
cryptography/hazmat/bindings/openssl/backend.py
View file

@ -340,7 +340,7 @@ class HMACs(object):
self._backend.lib.HMAC_CTX_init(copied_ctx)
copied_ctx = self._backend.ffi.gc(copied_ctx,
self._backend.lib.HMAC_CTX_cleanup)
res = self._backend.lib.HMAC_CTX_copy(copied_ctx, ctx)
res = self._backend.lib.Cryptography_HMAC_CTX_copy(copied_ctx, ctx)
assert res != 0
return copied_ctx

25
cryptography/hazmat/bindings/openssl/hmac.py
View file

@ -27,7 +27,7 @@ int Cryptography_HMAC_Init_ex(HMAC_CTX *, const void *, int, const EVP_MD *,
ENGINE *);
int Cryptography_HMAC_Update(HMAC_CTX *, const unsigned char *, size_t);
int Cryptography_HMAC_Final(HMAC_CTX *, unsigned char *, unsigned int *);
int HMAC_CTX_copy(HMAC_CTX *, HMAC_CTX *);
int Cryptography_HMAC_CTX_copy(HMAC_CTX *, HMAC_CTX *);
"""
MACROS = """
@ -64,4 +64,27 @@ int Cryptography_HMAC_Final(HMAC_CTX *ctx, unsigned char *digest,
#endif
}
int Cryptography_HMAC_CTX_copy(HMAC_CTX *dst_ctx, HMAC_CTX *src_ctx) {
#if OPENSSL_VERSION_NUMBER >= 0x010000000
return HMAC_CTX_copy(dst_ctx, src_ctx);
#else
HMAC_CTX_init(dst_ctx);
if (!EVP_MD_CTX_copy_ex(&dst_ctx->i_ctx, &src_ctx->i_ctx)) {
goto err;
}
if (!EVP_MD_CTX_copy_ex(&dst_ctx->o_ctx, &src_ctx->o_ctx)) {
goto err;
}
if (!EVP_MD_CTX_copy_ex(&dst_ctx->md_ctx, &src_ctx->md_ctx)) {
goto err;
}
memcpy(dst_ctx->key, src_ctx->key, HMAC_MAX_MD_CBLOCK);
dst_ctx->key_length = src_ctx->key_length;
dst_ctx->md = src_ctx->md;
return 1;
err:
return 0;
#endif
}
"""