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usr
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src
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contrib
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bearssl
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src
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hash
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dig_oid.c
(2.4 KB)
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dig_size.c
(1.58 KB)
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ghash_ctmul.c
(8.95 KB)
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ghash_ctmul32.c
(6.7 KB)
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ghash_ctmul64.c
(3.96 KB)
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ghash_pclmul.c
(10.25 KB)
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ghash_pwr8.c
(8.95 KB)
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md5.c
(5.83 KB)
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md5sha1.c
(3.67 KB)
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mgf1.c
(1.74 KB)
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multihash.c
(4.08 KB)
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sha1.c
(5.4 KB)
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sha2big.c
(7.87 KB)
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sha2small.c
(9.22 KB)
Editing: mgf1.c
/* * Copyright (c) 2018 Thomas Pornin <pornin@bolet.org> * * 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. */ #include "inner.h" /* see inner.h */ void br_mgf1_xor(void *data, size_t len, const br_hash_class *dig, const void *seed, size_t seed_len) { unsigned char *buf; size_t u, hlen; uint32_t c; buf = data; hlen = br_digest_size(dig); for (u = 0, c = 0; u < len; u += hlen, c ++) { br_hash_compat_context hc; unsigned char tmp[64]; size_t v; hc.vtable = dig; dig->init(&hc.vtable); dig->update(&hc.vtable, seed, seed_len); br_enc32be(tmp, c); dig->update(&hc.vtable, tmp, 4); dig->out(&hc.vtable, tmp); for (v = 0; v < hlen; v ++) { if ((u + v) >= len) { break; } buf[u + v] ^= tmp[v]; } } }
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