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Onek8
2025-01-22 17:22:38 +01:00
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Kinc/Sources/kinc/libs/tls/openssl/lws-genhash.c Normal file
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/*
* libwebsockets - small server side websockets and web server implementation
*
* Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* lws_genhash provides a hash / hmac abstraction api in lws that works the
* same whether you are using openssl or mbedtls hash functions underneath.
*/
#include <private-lib-core.h>
#include <openssl/obj_mac.h>
#include <openssl/opensslv.h>
/*
* Care: many openssl apis return 1 for success. These are translated to the
* lws convention of 0 for success.
*/
int
lws_genhash_init(struct lws_genhash_ctx *ctx, enum lws_genhash_types type)
{
ctx->type = (uint8_t)type;
ctx->mdctx = EVP_MD_CTX_create();
if (!ctx->mdctx)
return 1;
switch (ctx->type) {
case LWS_GENHASH_TYPE_MD5:
ctx->evp_type = EVP_md5();
break;
case LWS_GENHASH_TYPE_SHA1:
ctx->evp_type = EVP_sha1();
break;
case LWS_GENHASH_TYPE_SHA256:
ctx->evp_type = EVP_sha256();
break;
case LWS_GENHASH_TYPE_SHA384:
ctx->evp_type = EVP_sha384();
break;
case LWS_GENHASH_TYPE_SHA512:
ctx->evp_type = EVP_sha512();
break;
default:
return 1;
}
if (EVP_DigestInit_ex(ctx->mdctx, ctx->evp_type, NULL) != 1) {
EVP_MD_CTX_destroy(ctx->mdctx);
return 1;
}
return 0;
}
int
lws_genhash_update(struct lws_genhash_ctx *ctx, const void *in, size_t len)
{
if (!len)
return 0;
return EVP_DigestUpdate(ctx->mdctx, in, len) != 1;
}
int
lws_genhash_destroy(struct lws_genhash_ctx *ctx, void *result)
{
unsigned int len;
int ret = 0;
if (!ctx->mdctx)
return 0;
if (result)
ret = EVP_DigestFinal_ex(ctx->mdctx, result, &len) != 1;
(void)len;
EVP_MD_CTX_destroy(ctx->mdctx);
ctx->mdctx = NULL;
return ret;
}
#if defined(LWS_HAVE_EVP_PKEY_new_raw_private_key)
int
lws_genhmac_init(struct lws_genhmac_ctx *ctx, enum lws_genhmac_types type,
const uint8_t *key, size_t key_len)
{
ctx->ctx = EVP_MD_CTX_create();
if (!ctx->ctx)
return -1;
ctx->evp_type = 0;
ctx->type = (uint8_t)type;
switch (type) {
case LWS_GENHMAC_TYPE_SHA256:
ctx->evp_type = EVP_sha256();
break;
case LWS_GENHMAC_TYPE_SHA384:
ctx->evp_type = EVP_sha384();
break;
case LWS_GENHMAC_TYPE_SHA512:
ctx->evp_type = EVP_sha512();
break;
default:
lwsl_err("%s: unknown HMAC type %d\n", __func__, type);
goto bail;
}
ctx->key = EVP_PKEY_new_raw_private_key(EVP_PKEY_HMAC, NULL, key, key_len);
if (!ctx->key)
goto bail;
if (EVP_DigestSignInit(ctx->ctx, NULL, ctx->evp_type, NULL, ctx->key) != 1)
goto bail1;
return 0;
bail1:
EVP_PKEY_free(ctx->key);
bail:
EVP_MD_CTX_free(ctx->ctx);
return -1;
}
int
lws_genhmac_update(struct lws_genhmac_ctx *ctx, const void *in, size_t len)
{
if (EVP_DigestSignUpdate(ctx->ctx, in, len) != 1)
return -1;
return 0;
}
int
lws_genhmac_destroy(struct lws_genhmac_ctx *ctx, void *result)
{
size_t size = (size_t)lws_genhmac_size(ctx->type);
int n;
n = EVP_DigestSignFinal(ctx->ctx, result, &size);
EVP_MD_CTX_free(ctx->ctx);
EVP_PKEY_free(ctx->key);
if (n != 1)
return -1;
return 0;
}
#else
int
lws_genhmac_init(struct lws_genhmac_ctx *ctx, enum lws_genhmac_types type,
const uint8_t *key, size_t key_len)
{
#if defined(LWS_HAVE_HMAC_CTX_new)
ctx->ctx = HMAC_CTX_new();
if (!ctx->ctx)
return -1;
#else
HMAC_CTX_init(&ctx->ctx);
#endif
ctx->evp_type = 0;
ctx->type = (uint8_t)type;
switch (type) {
case LWS_GENHMAC_TYPE_SHA256:
ctx->evp_type = EVP_sha256();
break;
case LWS_GENHMAC_TYPE_SHA384:
ctx->evp_type = EVP_sha384();
break;
case LWS_GENHMAC_TYPE_SHA512:
ctx->evp_type = EVP_sha512();
break;
default:
lwsl_err("%s: unknown HMAC type %d\n", __func__, type);
goto bail;
}
#if defined(LWS_HAVE_HMAC_CTX_new)
if (HMAC_Init_ex(ctx->ctx, key, (int)key_len, ctx->evp_type, NULL) != 1)
#else
if (HMAC_Init_ex(&ctx->ctx, key, (int)key_len, ctx->evp_type, NULL) != 1)
#endif
goto bail;
return 0;
bail:
#if defined(LWS_HAVE_HMAC_CTX_new)
HMAC_CTX_free(ctx->ctx);
#endif
return -1;
}
int
lws_genhmac_update(struct lws_genhmac_ctx *ctx, const void *in, size_t len)
{
#if defined(LWS_HAVE_HMAC_CTX_new)
#if defined(LIBRESSL_VERSION_NUMBER)
if (HMAC_Update(ctx->ctx, in, len) != 1)
#else
if (HMAC_Update(ctx->ctx, in, (int)len) != 1)
#endif
#else /* HMAC_CTX_new */
if (HMAC_Update(&ctx->ctx, in, len) != 1)
#endif
return -1;
return 0;
}
int
lws_genhmac_destroy(struct lws_genhmac_ctx *ctx, void *result)
{
unsigned int size = (unsigned int)lws_genhmac_size(ctx->type);
#if defined(LWS_HAVE_HMAC_CTX_new)
int n = HMAC_Final(ctx->ctx, result, &size);
HMAC_CTX_free(ctx->ctx);
#else
int n = HMAC_Final(&ctx->ctx, result, &size);
#endif
if (n != 1)
return -1;
return 0;
}
#endif