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prov: update kmac to have additional init arguments

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Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/14310)
This commit is contained in:
Pauli 2021-02-25 13:54:13 +10:00
parent c23f96f3f6
commit ac238428ce
1 changed files with 28 additions and 18 deletions
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46
providers/implementations/macs/kmac_prov.c
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@ -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) {