142 lines
3.7 KiB
C
142 lines
3.7 KiB
C
/*
|
|
* Copyright (c) 2016 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 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
|
|
};
|