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proxmark3/common/mbedtls/sha1.c
Philippe Teuwen 961d929f4d changing {} style to match majority of previous style
2019-03-10 11:20:22 +01:00

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/*
* FIPS-180-1 compliant SHA-1 implementation
*
* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
* SPDX-License-Identifier: GPL-2.0
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This file is part of mbed TLS (https://tls.mbed.org)
*/
/*
* The SHA-1 standard was published by NIST in 1993.
*
* http://www.itl.nist.gov/fipspubs/fip180-1.htm
*/
#if !defined(MBEDTLS_CONFIG_FILE)
#include "mbedtls/config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#if defined(MBEDTLS_SHA1_C)
#include "mbedtls/sha1.h"
#include "mbedtls/platform_util.h"
#include <string.h>
#if defined(MBEDTLS_SELF_TEST)
#if defined(MBEDTLS_PLATFORM_C)
#include "mbedtls/platform.h"
#else
#include <stdio.h>
#define mbedtls_printf printf
#endif /* MBEDTLS_PLATFORM_C */
#endif /* MBEDTLS_SELF_TEST */
#if !defined(MBEDTLS_SHA1_ALT)
/*
* 32-bit integer manipulation macros (big endian)
*/
#ifndef GET_UINT32_BE
#define GET_UINT32_BE(n,b,i) \
{ \
(n) = ( (uint32_t) (b)[(i) ] << 24 ) \
| ( (uint32_t) (b)[(i) + 1] << 16 ) \
| ( (uint32_t) (b)[(i) + 2] << 8 ) \
| ( (uint32_t) (b)[(i) + 3] ); \
}
#endif
#ifndef PUT_UINT32_BE
#define PUT_UINT32_BE(n,b,i) \
{ \
(b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
(b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
(b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
(b)[(i) + 3] = (unsigned char) ( (n) ); \
}
#endif
void mbedtls_sha1_init(mbedtls_sha1_context *ctx) {
memset(ctx, 0, sizeof(mbedtls_sha1_context));
}
void mbedtls_sha1_free(mbedtls_sha1_context *ctx) {
if (ctx == NULL)
return;
mbedtls_platform_zeroize(ctx, sizeof(mbedtls_sha1_context));
}
void mbedtls_sha1_clone(mbedtls_sha1_context *dst,
const mbedtls_sha1_context *src) {
*dst = *src;
}
/*
* SHA-1 context setup
*/
int mbedtls_sha1_starts_ret(mbedtls_sha1_context *ctx) {
ctx->total[0] = 0;
ctx->total[1] = 0;
ctx->state[0] = 0x67452301;
ctx->state[1] = 0xEFCDAB89;
ctx->state[2] = 0x98BADCFE;
ctx->state[3] = 0x10325476;
ctx->state[4] = 0xC3D2E1F0;
return (0);
}
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
void mbedtls_sha1_starts(mbedtls_sha1_context *ctx) {
mbedtls_sha1_starts_ret(ctx);
}
#endif
#if !defined(MBEDTLS_SHA1_PROCESS_ALT)
int mbedtls_internal_sha1_process(mbedtls_sha1_context *ctx,
const unsigned char data[64]) {
uint32_t temp, W[16], A, B, C, D, E;
GET_UINT32_BE(W[ 0], data, 0);
GET_UINT32_BE(W[ 1], data, 4);
GET_UINT32_BE(W[ 2], data, 8);
GET_UINT32_BE(W[ 3], data, 12);
GET_UINT32_BE(W[ 4], data, 16);
GET_UINT32_BE(W[ 5], data, 20);
GET_UINT32_BE(W[ 6], data, 24);
GET_UINT32_BE(W[ 7], data, 28);
GET_UINT32_BE(W[ 8], data, 32);
GET_UINT32_BE(W[ 9], data, 36);
GET_UINT32_BE(W[10], data, 40);
GET_UINT32_BE(W[11], data, 44);
GET_UINT32_BE(W[12], data, 48);
GET_UINT32_BE(W[13], data, 52);
GET_UINT32_BE(W[14], data, 56);
GET_UINT32_BE(W[15], data, 60);
#define S(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
#define R(t) \
( \
temp = W[( t - 3 ) & 0x0F] ^ W[( t - 8 ) & 0x0F] ^ \
W[( t - 14 ) & 0x0F] ^ W[ t & 0x0F], \
( W[t & 0x0F] = S(temp,1) ) \
)
#define P(a,b,c,d,e,x) \
{ \
e += S(a,5) + F(b,c,d) + K + x; b = S(b,30); \
}
A = ctx->state[0];
B = ctx->state[1];
C = ctx->state[2];
D = ctx->state[3];
E = ctx->state[4];
#define F(x,y,z) (z ^ (x & (y ^ z)))
#define K 0x5A827999
P(A, B, C, D, E, W[0]);
P(E, A, B, C, D, W[1]);
P(D, E, A, B, C, W[2]);
P(C, D, E, A, B, W[3]);
P(B, C, D, E, A, W[4]);
P(A, B, C, D, E, W[5]);
P(E, A, B, C, D, W[6]);
P(D, E, A, B, C, W[7]);
P(C, D, E, A, B, W[8]);
P(B, C, D, E, A, W[9]);
P(A, B, C, D, E, W[10]);
P(E, A, B, C, D, W[11]);
P(D, E, A, B, C, W[12]);
P(C, D, E, A, B, W[13]);
P(B, C, D, E, A, W[14]);
P(A, B, C, D, E, W[15]);
P(E, A, B, C, D, R(16));
P(D, E, A, B, C, R(17));
P(C, D, E, A, B, R(18));
P(B, C, D, E, A, R(19));
#undef K
#undef F
#define F(x,y,z) (x ^ y ^ z)
#define K 0x6ED9EBA1
P(A, B, C, D, E, R(20));
P(E, A, B, C, D, R(21));
P(D, E, A, B, C, R(22));
P(C, D, E, A, B, R(23));
P(B, C, D, E, A, R(24));
P(A, B, C, D, E, R(25));
P(E, A, B, C, D, R(26));
P(D, E, A, B, C, R(27));
P(C, D, E, A, B, R(28));
P(B, C, D, E, A, R(29));
P(A, B, C, D, E, R(30));
P(E, A, B, C, D, R(31));
P(D, E, A, B, C, R(32));
P(C, D, E, A, B, R(33));
P(B, C, D, E, A, R(34));
P(A, B, C, D, E, R(35));
P(E, A, B, C, D, R(36));
P(D, E, A, B, C, R(37));
P(C, D, E, A, B, R(38));
P(B, C, D, E, A, R(39));
#undef K
#undef F
#define F(x,y,z) ((x & y) | (z & (x | y)))
#define K 0x8F1BBCDC
P(A, B, C, D, E, R(40));
P(E, A, B, C, D, R(41));
P(D, E, A, B, C, R(42));
P(C, D, E, A, B, R(43));
P(B, C, D, E, A, R(44));
P(A, B, C, D, E, R(45));
P(E, A, B, C, D, R(46));
P(D, E, A, B, C, R(47));
P(C, D, E, A, B, R(48));
P(B, C, D, E, A, R(49));
P(A, B, C, D, E, R(50));
P(E, A, B, C, D, R(51));
P(D, E, A, B, C, R(52));
P(C, D, E, A, B, R(53));
P(B, C, D, E, A, R(54));
P(A, B, C, D, E, R(55));
P(E, A, B, C, D, R(56));
P(D, E, A, B, C, R(57));
P(C, D, E, A, B, R(58));
P(B, C, D, E, A, R(59));
#undef K
#undef F
#define F(x,y,z) (x ^ y ^ z)
#define K 0xCA62C1D6
P(A, B, C, D, E, R(60));
P(E, A, B, C, D, R(61));
P(D, E, A, B, C, R(62));
P(C, D, E, A, B, R(63));
P(B, C, D, E, A, R(64));
P(A, B, C, D, E, R(65));
P(E, A, B, C, D, R(66));
P(D, E, A, B, C, R(67));
P(C, D, E, A, B, R(68));
P(B, C, D, E, A, R(69));
P(A, B, C, D, E, R(70));
P(E, A, B, C, D, R(71));
P(D, E, A, B, C, R(72));
P(C, D, E, A, B, R(73));
P(B, C, D, E, A, R(74));
P(A, B, C, D, E, R(75));
P(E, A, B, C, D, R(76));
P(D, E, A, B, C, R(77));
P(C, D, E, A, B, R(78));
P(B, C, D, E, A, R(79));
#undef K
#undef F
ctx->state[0] += A;
ctx->state[1] += B;
ctx->state[2] += C;
ctx->state[3] += D;
ctx->state[4] += E;
return (0);
}
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
void mbedtls_sha1_process(mbedtls_sha1_context *ctx,
const unsigned char data[64]) {
mbedtls_internal_sha1_process(ctx, data);
}
#endif
#endif /* !MBEDTLS_SHA1_PROCESS_ALT */
/*
* SHA-1 process buffer
*/
int mbedtls_sha1_update_ret(mbedtls_sha1_context *ctx,
const unsigned char *input,
size_t ilen) {
int ret;
size_t fill;
uint32_t left;
if (ilen == 0)
return (0);
left = ctx->total[0] & 0x3F;
fill = 64 - left;
ctx->total[0] += (uint32_t) ilen;
ctx->total[0] &= 0xFFFFFFFF;
if (ctx->total[0] < (uint32_t) ilen)
ctx->total[1]++;
if (left && ilen >= fill) {
memcpy((void *)(ctx->buffer + left), input, fill);
if ((ret = mbedtls_internal_sha1_process(ctx, ctx->buffer)) != 0)
return (ret);
input += fill;
ilen -= fill;
left = 0;
}
while (ilen >= 64) {
if ((ret = mbedtls_internal_sha1_process(ctx, input)) != 0)
return (ret);
input += 64;
ilen -= 64;
}
if (ilen > 0)
memcpy((void *)(ctx->buffer + left), input, ilen);
return (0);
}
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
void mbedtls_sha1_update(mbedtls_sha1_context *ctx,
const unsigned char *input,
size_t ilen) {
mbedtls_sha1_update_ret(ctx, input, ilen);
}
#endif
/*
* SHA-1 final digest
*/
int mbedtls_sha1_finish_ret(mbedtls_sha1_context *ctx,
unsigned char output[20]) {
int ret;
uint32_t used;
uint32_t high, low;
/*
* Add padding: 0x80 then 0x00 until 8 bytes remain for the length
*/
used = ctx->total[0] & 0x3F;
ctx->buffer[used++] = 0x80;
if (used <= 56) {
/* Enough room for padding + length in current block */
memset(ctx->buffer + used, 0, 56 - used);
} else {
/* We'll need an extra block */
memset(ctx->buffer + used, 0, 64 - used);
if ((ret = mbedtls_internal_sha1_process(ctx, ctx->buffer)) != 0)
return (ret);
memset(ctx->buffer, 0, 56);
}
/*
* Add message length
*/
high = (ctx->total[0] >> 29)
| (ctx->total[1] << 3);
low = (ctx->total[0] << 3);
PUT_UINT32_BE(high, ctx->buffer, 56);
PUT_UINT32_BE(low, ctx->buffer, 60);
if ((ret = mbedtls_internal_sha1_process(ctx, ctx->buffer)) != 0)
return (ret);
/*
* Output final state
*/
PUT_UINT32_BE(ctx->state[0], output, 0);
PUT_UINT32_BE(ctx->state[1], output, 4);
PUT_UINT32_BE(ctx->state[2], output, 8);
PUT_UINT32_BE(ctx->state[3], output, 12);
PUT_UINT32_BE(ctx->state[4], output, 16);
return (0);
}
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
void mbedtls_sha1_finish(mbedtls_sha1_context *ctx,
unsigned char output[20]) {
mbedtls_sha1_finish_ret(ctx, output);
}
#endif
#endif /* !MBEDTLS_SHA1_ALT */
/*
* output = SHA-1( input buffer )
*/
int mbedtls_sha1_ret(const unsigned char *input,
size_t ilen,
unsigned char output[20]) {
int ret;
mbedtls_sha1_context ctx;
mbedtls_sha1_init(&ctx);
if ((ret = mbedtls_sha1_starts_ret(&ctx)) != 0)
goto exit;
if ((ret = mbedtls_sha1_update_ret(&ctx, input, ilen)) != 0)
goto exit;
if ((ret = mbedtls_sha1_finish_ret(&ctx, output)) != 0)
goto exit;
exit:
mbedtls_sha1_free(&ctx);
return (ret);
}
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
void mbedtls_sha1(const unsigned char *input,
size_t ilen,
unsigned char output[20]) {
mbedtls_sha1_ret(input, ilen, output);
}
#endif
#if defined(MBEDTLS_SELF_TEST)
/*
* FIPS-180-1 test vectors
*/
static const unsigned char sha1_test_buf[3][57] = {
{ "abc" },
{ "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" },
{ "" }
};
static const size_t sha1_test_buflen[3] = {
3, 56, 1000
};
static const unsigned char sha1_test_sum[3][20] = {
{
0xA9, 0x99, 0x3E, 0x36, 0x47, 0x06, 0x81, 0x6A, 0xBA, 0x3E,
0x25, 0x71, 0x78, 0x50, 0xC2, 0x6C, 0x9C, 0xD0, 0xD8, 0x9D
},
{
0x84, 0x98, 0x3E, 0x44, 0x1C, 0x3B, 0xD2, 0x6E, 0xBA, 0xAE,
0x4A, 0xA1, 0xF9, 0x51, 0x29, 0xE5, 0xE5, 0x46, 0x70, 0xF1
},
{
0x34, 0xAA, 0x97, 0x3C, 0xD4, 0xC4, 0xDA, 0xA4, 0xF6, 0x1E,
0xEB, 0x2B, 0xDB, 0xAD, 0x27, 0x31, 0x65, 0x34, 0x01, 0x6F
}
};
/*
* Checkup routine
*/
int mbedtls_sha1_self_test(int verbose) {
int i, j, buflen, ret = 0;
unsigned char buf[1024];
unsigned char sha1sum[20];
mbedtls_sha1_context ctx;
mbedtls_sha1_init(&ctx);
/*
* SHA-1
*/
for (i = 0; i < 3; i++) {
if (verbose != 0)
mbedtls_printf(" SHA-1 test #%d: ", i + 1);
if ((ret = mbedtls_sha1_starts_ret(&ctx)) != 0)
goto fail;
if (i == 2) {
memset(buf, 'a', buflen = 1000);
for (j = 0; j < 1000; j++) {
ret = mbedtls_sha1_update_ret(&ctx, buf, buflen);
if (ret != 0)
goto fail;
}
} else {
ret = mbedtls_sha1_update_ret(&ctx, sha1_test_buf[i],
sha1_test_buflen[i]);
if (ret != 0)
goto fail;
}
if ((ret = mbedtls_sha1_finish_ret(&ctx, sha1sum)) != 0)
goto fail;
if (memcmp(sha1sum, sha1_test_sum[i], 20) != 0) {
ret = 1;
goto fail;
}
if (verbose != 0)
mbedtls_printf("passed\n");
}
if (verbose != 0)
mbedtls_printf("\n");
goto exit;
fail:
if (verbose != 0)
mbedtls_printf("failed\n");
exit:
mbedtls_sha1_free(&ctx);
return (ret);
}
#endif /* MBEDTLS_SELF_TEST */
#endif /* MBEDTLS_SHA1_C */
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