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libwebsockets/lib/tls/mbedtls/lws-gencrypto.c

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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-gencrypto openssl-specific common code
*/
#include "private-lib-core.h"
#include "private-lib-tls-mbedtls.h"
mbedtls_md_type_t
lws_gencrypto_mbedtls_hash_to_MD_TYPE(enum lws_genhash_types hash_type)
{
mbedtls_md_type_t h = (mbedtls_md_type_t)-1;
switch (hash_type) {
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case LWS_GENHASH_TYPE_MD5:
h = MBEDTLS_MD_MD5;
break;
case LWS_GENHASH_TYPE_SHA1:
h = MBEDTLS_MD_SHA1;
break;
case LWS_GENHASH_TYPE_SHA256:
h = MBEDTLS_MD_SHA256;
break;
case LWS_GENHASH_TYPE_SHA384:
h = MBEDTLS_MD_SHA384;
break;
case LWS_GENHASH_TYPE_SHA512:
h = MBEDTLS_MD_SHA512;
break;
default:
break;
}
return h;
}
int
lws_gencrypto_mbedtls_rngf(void *context, unsigned char *buf, size_t len)
{
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if ((size_t)lws_get_random(context, buf, len) == len) {
// lwsl_hexdump_err(buf, len);
return 0;
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}
lwsl_err("%s: rng failed\n", __func__);
return -1;
}