static int hmac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
{
HMAC_PKEY_CTX *hctx = ctx->data;
HMAC_CTX_set_flags(hctx->ctx,
EVP_MD_CTX_test_flags(mctx, ~EVP_MD_CTX_FLAG_NO_INIT));
EVP_MD_CTX_set_flags(mctx, EVP_MD_CTX_FLAG_NO_INIT);
EVP_MD_CTX_set_update_fn(mctx, int_update);
return 1;
}
static int pkey_mac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
{
MAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx);
ASN1_OCTET_STRING *key = NULL;
int rv = 1;
/*
* For MACs with the EVP_PKEY_FLAG_SIGCTX_CUSTOM flag set and that
* gets the key passed as an ASN.1 OCTET STRING, we set the key here,
* as this may be only time it's set during a DigestSign.
*
* MACs that pass around the key in form of EVP_MAC_CTX are setting
* the key through other mechanisms. (this is only CMAC for now)
*/
int set_key =
hctx->type == MAC_TYPE_RAW
&& (ctx->pmeth->flags & EVP_PKEY_FLAG_SIGCTX_CUSTOM) != 0;
if (set_key) {
if (EVP_PKEY_id(EVP_PKEY_CTX_get0_pkey(ctx))
!= EVP_MAC_nid(EVP_MAC_CTX_mac(hctx->ctx)))
return 0;
key = EVP_PKEY_get0(EVP_PKEY_CTX_get0_pkey(ctx));
if (key == NULL)
return 0;
}
/* Some MACs don't support this control... that's fine */
EVP_MAC_ctrl(hctx->ctx, EVP_MAC_CTRL_SET_FLAGS,
EVP_MD_CTX_test_flags(mctx, ~EVP_MD_CTX_FLAG_NO_INIT));
EVP_MD_CTX_set_flags(mctx, EVP_MD_CTX_FLAG_NO_INIT);
EVP_MD_CTX_set_update_fn(mctx, int_update);
if (set_key)
rv = EVP_MAC_ctrl(hctx->ctx, EVP_MAC_CTRL_SET_KEY, key->data,
key->length);
return rv > 0;
}
static int ossl_hmac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
{
EVP_MD_CTX_set_flags(mctx, EVP_MD_CTX_FLAG_NO_INIT);
EVP_MD_CTX_set_update_fn(mctx, ossl_int_update);
return 1;
}
