diff options
Diffstat (limited to 'lib/crypto-api.c')
| -rw-r--r-- | lib/crypto-api.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/lib/crypto-api.c b/lib/crypto-api.c index 0b6be4eed2..db7a08fd92 100644 --- a/lib/crypto-api.c +++ b/lib/crypto-api.c @@ -482,6 +482,38 @@ gnutls_hmac_fast(gnutls_mac_algorithm_t algorithm, digest); } +/** + * gnutls_hmac_copy: + * @handle: is a #gnutls_hmac_hd_t type + * + * This function will create a copy of MAC context, containing all its current + * state. Copying contexts for MACs registered using + * gnutls_crypto_register_mac() is not supported and will always result in an + * error. + * + * Returns: new MAC context or NULL in case of an error. + * + * Since: 3.6.9 + */ +gnutls_hmac_hd_t gnutls_hmac_copy(gnutls_hmac_hd_t handle) +{ + gnutls_hmac_hd_t dig; + + dig = gnutls_malloc(sizeof(mac_hd_st)); + if (dig == NULL) { + gnutls_assert(); + return NULL; + } + + if (_gnutls_mac_copy((const mac_hd_st *) handle, (mac_hd_st *)dig) != GNUTLS_E_SUCCESS) { + gnutls_assert(); + gnutls_free(dig); + return NULL; + } + + return dig; +} + /* HASH */ /** |