diff options
Diffstat (limited to 'third_party/bearssl/src/md5sha1.c')
| -rw-r--r-- | third_party/bearssl/src/md5sha1.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/third_party/bearssl/src/md5sha1.c b/third_party/bearssl/src/md5sha1.c new file mode 100644 index 0000000..f701aee --- /dev/null +++ b/third_party/bearssl/src/md5sha1.c @@ -0,0 +1,141 @@ +/* + * Copyright (c) 2016 Thomas Pornin <[email protected]> + * + * 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 bearssl.h */ +void +br_md5sha1_init(br_md5sha1_context *cc) +{ + cc->vtable = &br_md5sha1_vtable; + memcpy(cc->val_md5, br_md5_IV, sizeof cc->val_md5); + memcpy(cc->val_sha1, br_sha1_IV, sizeof cc->val_sha1); + cc->count = 0; +} + +/* see bearssl.h */ +void +br_md5sha1_update(br_md5sha1_context *cc, const void *data, size_t len) +{ + const unsigned char *buf; + size_t ptr; + + buf = data; + ptr = (size_t)cc->count & 63; + while (len > 0) { + size_t clen; + + clen = 64 - ptr; + if (clen > len) { + clen = len; + } + memcpy(cc->buf + ptr, buf, clen); + ptr += clen; + buf += clen; + len -= clen; + cc->count += (uint64_t)clen; + if (ptr == 64) { + br_md5_round(cc->buf, cc->val_md5); + br_sha1_round(cc->buf, cc->val_sha1); + ptr = 0; + } + } +} + +/* see bearssl.h */ +void +br_md5sha1_out(const br_md5sha1_context *cc, void *dst) +{ + unsigned char buf[64]; + uint32_t val_md5[4]; + uint32_t val_sha1[5]; + size_t ptr; + unsigned char *out; + uint64_t count; + + count = cc->count; + ptr = (size_t)count & 63; + memcpy(buf, cc->buf, ptr); + memcpy(val_md5, cc->val_md5, sizeof val_md5); + memcpy(val_sha1, cc->val_sha1, sizeof val_sha1); + buf[ptr ++] = 0x80; + if (ptr > 56) { + memset(buf + ptr, 0, 64 - ptr); + br_md5_round(buf, val_md5); + br_sha1_round(buf, val_sha1); + memset(buf, 0, 56); + } else { + memset(buf + ptr, 0, 56 - ptr); + } + count <<= 3; + br_enc64le(buf + 56, count); + br_md5_round(buf, val_md5); + br_enc64be(buf + 56, count); + br_sha1_round(buf, val_sha1); + out = dst; + br_range_enc32le(out, val_md5, 4); + br_range_enc32be(out + 16, val_sha1, 5); +} + +/* see bearssl.h */ +uint64_t +br_md5sha1_state(const br_md5sha1_context *cc, void *dst) +{ + unsigned char *out; + + out = dst; + br_range_enc32le(out, cc->val_md5, 4); + br_range_enc32be(out + 16, cc->val_sha1, 5); + return cc->count; +} + +/* see bearssl.h */ +void +br_md5sha1_set_state(br_md5sha1_context *cc, const void *stb, uint64_t count) +{ + const unsigned char *buf; + + buf = stb; + br_range_dec32le(cc->val_md5, 4, buf); + br_range_dec32be(cc->val_sha1, 5, buf + 16); + cc->count = count; +} + +/* see bearssl.h */ +const br_hash_class br_md5sha1_vtable = { + sizeof(br_md5sha1_context), + BR_HASHDESC_ID(br_md5sha1_ID) + | BR_HASHDESC_OUT(36) + | BR_HASHDESC_STATE(36) + | BR_HASHDESC_LBLEN(6), + (void (*)(const br_hash_class **))&br_md5sha1_init, + (void (*)(const br_hash_class **, const void *, size_t)) + &br_md5sha1_update, + (void (*)(const br_hash_class *const *, void *)) + &br_md5sha1_out, + (uint64_t (*)(const br_hash_class *const *, void *)) + &br_md5sha1_state, + (void (*)(const br_hash_class **, const void *, uint64_t)) + &br_md5sha1_set_state +}; |