libgcrypt: Implement the 'evp' interface

* include/libssh/libgcrypt.h (EVPCTX): Fix type.
(NID_gcrypt_nistp{256,384,521}): New constants.
* src/libgcrypt.c (nid_to_md_algo): New function mapping curves to
digest algorithms.
(evp{,_init,_update,_final}): New functions.

Signed-off-by: Justus Winter <justus@g10code.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
This commit is contained in:
Justus Winter
2016-05-02 16:00:24 +02:00
committed by Andreas Schneider
parent 3c2ea78a09
commit 7e315629b9
2 changed files with 59 additions and 1 deletions

View File

@@ -32,7 +32,7 @@ typedef gcry_md_hd_t SHA384CTX;
typedef gcry_md_hd_t SHA512CTX;
typedef gcry_md_hd_t MD5CTX;
typedef gcry_md_hd_t HMACCTX;
typedef void *EVPCTX;
typedef gcry_md_hd_t EVPCTX;
#define SHA_DIGEST_LENGTH 20
#define SHA_DIGEST_LEN SHA_DIGEST_LENGTH
#define MD5_DIGEST_LEN 16
@@ -51,6 +51,11 @@ typedef void *EVPCTX;
typedef gcry_mpi_t bignum;
/* Constants for curves. */
#define NID_gcrypt_nistp256 0
#define NID_gcrypt_nistp384 1
#define NID_gcrypt_nistp521 2
/* missing gcrypt functions */
int ssh_gcry_dec2bn(bignum *bn, const char *data);
char *ssh_gcry_bn2dec(bignum bn);