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-rw-r--r--providers/implementations/macs/kmac_prov.c46
1 files changed, 28 insertions, 18 deletions
diff --git a/providers/implementations/macs/kmac_prov.c b/providers/implementations/macs/kmac_prov.c
index 76f581ee77..361ff8e716 100644
--- a/providers/implementations/macs/kmac_prov.c
+++ b/providers/implementations/macs/kmac_prov.c
@@ -241,23 +241,41 @@ static size_t kmac_size(void *vmacctx)
return kctx->out_len;
}
+static int kmac_setkey(struct kmac_data_st *kctx, const unsigned char *key,
+ size_t keylen)
+{
+ const EVP_MD *digest = ossl_prov_digest_md(&kctx->digest);
+
+ if (keylen < 4 || keylen > KMAC_MAX_KEY) {
+ ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY_LENGTH);
+ return 0;
+ }
+ if (!kmac_bytepad_encode_key(kctx->key, &kctx->key_len,
+ key, keylen, EVP_MD_block_size(digest)))
+ return 0;
+ return 1;
+}
+
/*
* The init() assumes that any ctrl methods are set beforehand for
* md, key and custom. Setting the fields afterwards will have no
* effect on the output mac.
*/
-static int kmac_init(void *vmacctx)
+static int kmac_init(void *vmacctx, const unsigned char *key,
+ size_t keylen, const OSSL_PARAM params[])
{
struct kmac_data_st *kctx = vmacctx;
EVP_MD_CTX *ctx = kctx->ctx;
unsigned char out[KMAC_MAX_BLOCKSIZE];
int out_len, block_len;
- if (!ossl_prov_is_running())
+ if (!ossl_prov_is_running() || !kmac_set_ctx_params(kctx, params))
return 0;
-
- /* Check key has been set */
- if (kctx->key_len == 0) {
+ if (key != NULL) {
+ if (!kmac_setkey(kctx, key, keylen))
+ return 0;
+ } else if (kctx->key_len == 0) {
+ /* Check key has been set */
ERR_raise(ERR_LIB_PROV, PROV_R_NO_KEY_SET);
return 0;
}
@@ -271,11 +289,11 @@ static int kmac_init(void *vmacctx)
/* Set default custom string if it is not already set */
if (kctx->custom_len == 0) {
- const OSSL_PARAM params[] = {
+ const OSSL_PARAM cparams[] = {
OSSL_PARAM_octet_string(OSSL_MAC_PARAM_CUSTOM, "", 0),
OSSL_PARAM_END
};
- (void)kmac_set_ctx_params(kctx, params);
+ (void)kmac_set_ctx_params(kctx, cparams);
}
return bytepad(out, &out_len, kmac_string, sizeof(kmac_string),
@@ -360,7 +378,6 @@ static int kmac_set_ctx_params(void *vmacctx, const OSSL_PARAM *params)
{
struct kmac_data_st *kctx = vmacctx;
const OSSL_PARAM *p;
- const EVP_MD *digest = ossl_prov_digest_md(&kctx->digest);
if ((p = OSSL_PARAM_locate_const(params, OSSL_MAC_PARAM_XOF)) != NULL
&& !OSSL_PARAM_get_int(p, &kctx->xof_mode))
@@ -368,16 +385,9 @@ static int kmac_set_ctx_params(void *vmacctx, const OSSL_PARAM *params)
if (((p = OSSL_PARAM_locate_const(params, OSSL_MAC_PARAM_SIZE)) != NULL)
&& !OSSL_PARAM_get_size_t(p, &kctx->out_len))
return 0;
- if ((p = OSSL_PARAM_locate_const(params, OSSL_MAC_PARAM_KEY)) != NULL) {
- if (p->data_size < 4 || p->data_size > KMAC_MAX_KEY) {
- ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY_LENGTH);
- return 0;
- }
- if (!kmac_bytepad_encode_key(kctx->key, &kctx->key_len,
- p->data, p->data_size,
- EVP_MD_block_size(digest)))
- return 0;
- }
+ if ((p = OSSL_PARAM_locate_const(params, OSSL_MAC_PARAM_KEY)) != NULL
+ && !kmac_setkey(kctx, p->data, p->data_size))
+ return 0;
if ((p = OSSL_PARAM_locate_const(params, OSSL_MAC_PARAM_CUSTOM))
!= NULL) {
if (p->data_size > KMAC_MAX_CUSTOM) {