44 lines
1.6 KiB
C
44 lines
1.6 KiB
C
/*
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* Copyright (c) 2016 Thomas Pornin <pornin@bolet.org>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "inner.h"
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/* see bearssl.h */
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void
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br_tls10_prf(void *dst, size_t len,
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const void *secret, size_t secret_len, const char *label,
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size_t seed_num, const br_tls_prf_seed_chunk *seed)
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{
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const unsigned char *s1;
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size_t slen;
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s1 = secret;
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slen = (secret_len + 1) >> 1;
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memset(dst, 0, len);
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br_tls_phash(dst, len, &br_md5_vtable,
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s1, slen, label, seed_num, seed);
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br_tls_phash(dst, len, &br_sha1_vtable,
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s1 + secret_len - slen, slen, label, seed_num, seed);
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}
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