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/*
* Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
/* We need to use some engine deprecated APIs */
#define OPENSSL_SUPPRESS_DEPRECATED
#include <openssl/crypto.h>
#include <openssl/evp.h>
#include <openssl/core_dispatch.h>
#include <openssl/core_names.h>
#include <openssl/params.h>
#include <openssl/err.h>
#include "prov/implementations.h"
#include "prov/provider_ctx.h"
#include "prov/macsignature.h"
#include "prov/providercommon.h"
static OSSL_FUNC_signature_newctx_fn mac_hmac_newctx;
static OSSL_FUNC_signature_newctx_fn mac_siphash_newctx;
static OSSL_FUNC_signature_newctx_fn mac_poly1305_newctx;
static OSSL_FUNC_signature_newctx_fn mac_cmac_newctx;
static OSSL_FUNC_signature_digest_sign_init_fn mac_digest_sign_init;
static OSSL_FUNC_signature_digest_sign_update_fn mac_digest_sign_update;
static OSSL_FUNC_signature_digest_sign_final_fn mac_digest_sign_final;
static OSSL_FUNC_signature_freectx_fn mac_freectx;
static OSSL_FUNC_signature_dupctx_fn mac_dupctx;
static OSSL_FUNC_signature_set_ctx_params_fn mac_set_ctx_params;
static OSSL_FUNC_signature_settable_ctx_params_fn mac_hmac_settable_ctx_params;
static OSSL_FUNC_signature_settable_ctx_params_fn mac_siphash_settable_ctx_params;
static OSSL_FUNC_signature_settable_ctx_params_fn mac_poly1305_settable_ctx_params;
static OSSL_FUNC_signature_settable_ctx_params_fn mac_cmac_settable_ctx_params;
typedef struct {
OSSL_LIB_CTX *libctx;
char *propq;
MAC_KEY *key;
EVP_MAC_CTX *macctx;
} PROV_MAC_CTX;
static void *mac_newctx(void *provctx, const char *propq, const char *macname)
{
PROV_MAC_CTX *pmacctx;
EVP_MAC *mac = NULL;
if (!ossl_prov_is_running())
return NULL;
pmacctx = OPENSSL_zalloc(sizeof(PROV_MAC_CTX));
if (pmacctx == NULL)
return NULL;
pmacctx->libctx = PROV_LIBCTX_OF(provctx);
if (propq != NULL && (pmacctx->propq = OPENSSL_strdup(propq)) == NULL) {
ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
goto err;
}
mac = EVP_MAC_fetch(pmacctx->libctx, macname, propq);
if (mac == NULL)
goto err;
pmacctx->macctx = EVP_MAC_CTX_new(mac);
if (pmacctx->macctx == NULL)
goto err;
EVP_MAC_free(mac);
return pmacctx;
err:
OPENSSL_free(pmacctx->propq);
OPENSSL_free(pmacctx);
EVP_MAC_free(mac);
return NULL;
}
#define MAC_NEWCTX(funcname, macname) \
static void *mac_##funcname##_newctx(void *provctx, const char *propq) \
{ \
return mac_newctx(provctx, propq, macname); \
}
MAC_NEWCTX(hmac, "HMAC")
MAC_NEWCTX(siphash, "SIPHASH")
MAC_NEWCTX(poly1305, "POLY1305")
MAC_NEWCTX(cmac, "CMAC")
static int mac_digest_sign_init(void *vpmacctx, const char *mdname, void *vkey)
{
PROV_MAC_CTX *pmacctx = (PROV_MAC_CTX *)vpmacctx;
const char *ciphername = NULL, *engine = NULL;
if (!ossl_prov_is_running()
|| pmacctx == NULL
|| vkey == NULL
|| !ossl_mac_key_up_ref(vkey))
return 0;
ossl_mac_key_free(pmacctx->key);
pmacctx->key = vkey;
if (pmacctx->key->cipher.cipher != NULL)
ciphername = (char *)EVP_CIPHER_name(pmacctx->key->cipher.cipher);
#if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
if (pmacctx->key->cipher.engine != NULL)
engine = (char *)ENGINE_get_id(pmacctx->key->cipher.engine);
#endif
if (!ossl_prov_set_macctx(pmacctx->macctx, NULL,
(char *)ciphername,
(char *)mdname,
(char *)engine,
pmacctx->key->properties,
pmacctx->key->priv_key,
pmacctx->key->priv_key_len))
return 0;
if (!EVP_MAC_init(pmacctx->macctx))
return 0;
return 1;
}
int mac_digest_sign_update(void *vpmacctx, const unsigned char *data,
size_t datalen)
{
PROV_MAC_CTX *pmacctx = (PROV_MAC_CTX *)vpmacctx;
if (pmacctx == NULL || pmacctx->macctx == NULL)
return 0;
return EVP_MAC_update(pmacctx->macctx, data, datalen);
}
int mac_digest_sign_final(void *vpmacctx, unsigned char *mac, size_t *maclen,
size_t macsize)
{
PROV_MAC_CTX *pmacctx = (PROV_MAC_CTX *)vpmacctx;
if (!ossl_prov_is_running() || pmacctx == NULL || pmacctx->macctx == NULL)
return 0;
return EVP_MAC_final(pmacctx->macctx, mac, maclen, macsize);
}
static void mac_freectx(void *vpmacctx)
{
PROV_MAC_CTX *ctx = (PROV_MAC_CTX *)vpmacctx;
OPENSSL_free(ctx->propq);
EVP_MAC_CTX_free(ctx->macctx);
ossl_mac_key_free(ctx->key);
OPENSSL_free(ctx);
}
static void *mac_dupctx(void *vpmacctx)
{
PROV_MAC_CTX *srcctx = (PROV_MAC_CTX *)vpmacctx;
PROV_MAC_CTX *dstctx;
if (!ossl_prov_is_running())
return NULL;
dstctx = OPENSSL_zalloc(sizeof(*srcctx));
if (dstctx == NULL)
return NULL;
*dstctx = *srcctx;
dstctx->propq = NULL;
dstctx->key = NULL;
dstctx->macctx = NULL;
if (srcctx->propq != NULL && (dstctx->propq = OPENSSL_strdup(srcctx->propq)) == NULL)
goto err;
if (srcctx->key != NULL && !ossl_mac_key_up_ref(srcctx->key))
goto err;
dstctx->key = srcctx->key;
if (srcctx->macctx != NULL) {
dstctx->macctx = EVP_MAC_CTX_dup(srcctx->macctx);
if (dstctx->macctx == NULL)
goto err;
}
return dstctx;
err:
mac_freectx(dstctx);
return NULL;
}
static int mac_set_ctx_params(void *vpmacctx, const OSSL_PARAM params[])
{
PROV_MAC_CTX *ctx = (PROV_MAC_CTX *)vpmacctx;
return EVP_MAC_CTX_set_params(ctx->macctx, params);
}
static const OSSL_PARAM *mac_settable_ctx_params(void *provctx,
const char *macname)
{
EVP_MAC *mac = EVP_MAC_fetch(PROV_LIBCTX_OF(provctx), macname,
NULL);
const OSSL_PARAM *params;
if (mac == NULL)
return NULL;
params = EVP_MAC_settable_ctx_params(mac);
EVP_MAC_free(mac);
return params;
}
#define MAC_SETTABLE_CTX_PARAMS(funcname, macname) \
static const OSSL_PARAM *mac_##funcname##_settable_ctx_params(void *provctx) \
{ \
return mac_settable_ctx_params(provctx, macname); \
}
MAC_SETTABLE_CTX_PARAMS(hmac, "HMAC")
MAC_SETTABLE_CTX_PARAMS(siphash, "SIPHASH")
MAC_SETTABLE_CTX_PARAMS(poly1305, "POLY1305")
MAC_SETTABLE_CTX_PARAMS(cmac, "CMAC")
#define MAC_SIGNATURE_FUNCTIONS(funcname) \
const OSSL_DISPATCH ossl_mac_legacy_##funcname##_signature_functions[] = { \
{ OSSL_FUNC_SIGNATURE_NEWCTX, (void (*)(void))mac_##funcname##_newctx }, \
{ OSSL_FUNC_SIGNATURE_DIGEST_SIGN_INIT, \
(void (*)(void))mac_digest_sign_init }, \
{ OSSL_FUNC_SIGNATURE_DIGEST_SIGN_UPDATE, \
(void (*)(void))mac_digest_sign_update }, \
{ OSSL_FUNC_SIGNATURE_DIGEST_SIGN_FINAL, \
(void (*)(void))mac_digest_sign_final }, \
{ OSSL_FUNC_SIGNATURE_FREECTX, (void (*)(void))mac_freectx }, \
{ OSSL_FUNC_SIGNATURE_DUPCTX, (void (*)(void))mac_dupctx }, \
{ OSSL_FUNC_SIGNATURE_SET_CTX_PARAMS, \
(void (*)(void))mac_set_ctx_params }, \
{ OSSL_FUNC_SIGNATURE_SETTABLE_CTX_PARAMS, \
(void (*)(void))mac_##funcname##_settable_ctx_params }, \
{ 0, NULL } \
};
MAC_SIGNATURE_FUNCTIONS(hmac)
MAC_SIGNATURE_FUNCTIONS(siphash)
MAC_SIGNATURE_FUNCTIONS(poly1305)
MAC_SIGNATURE_FUNCTIONS(cmac)
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