9aae6f5ec2
* change(HashBuilder): Const-correctness Propagate 'const' of buffer variable from underlying functions. * Remove char* methods --------- Co-authored-by: Lucas Saavedra Vaz <32426024+lucasssvaz@users.noreply.github.com>
367 lines
9.7 KiB
C++
367 lines
9.7 KiB
C++
/*
|
|
* FIPS-180-1 compliant SHA-1 implementation
|
|
*
|
|
* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
* not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*
|
|
* This file is part of mbed TLS (https://tls.mbed.org)
|
|
* Modified for esp32 by Lucas Saavedra Vaz on 11 Jan 2024
|
|
*/
|
|
|
|
#include <Arduino.h>
|
|
#include <SHA1Builder.h>
|
|
|
|
// 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) ] = (uint8_t) ((n) >> 24); \
|
|
(b)[(i) + 1] = (uint8_t) ((n) >> 16); \
|
|
(b)[(i) + 2] = (uint8_t) ((n) >> 8); \
|
|
(b)[(i) + 3] = (uint8_t) ((n) ); \
|
|
}
|
|
#endif
|
|
|
|
// Constants
|
|
|
|
static const uint8_t sha1_padding[64] =
|
|
{
|
|
0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
|
|
};
|
|
|
|
// Private methods
|
|
|
|
void SHA1Builder::process(const uint8_t* data)
|
|
{
|
|
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 sha1_S(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
|
|
|
|
#define sha1_R(t) \
|
|
( \
|
|
temp = W[(t - 3) & 0x0F] ^ W[(t - 8) & 0x0F] ^ \
|
|
W[(t - 14) & 0x0F] ^ W[ t & 0x0F], \
|
|
(W[t & 0x0F] = sha1_S(temp,1)) \
|
|
)
|
|
|
|
#define sha1_P(a,b,c,d,e,x) \
|
|
{ \
|
|
e += sha1_S(a,5) + sha1_F(b,c,d) + sha1_K + x; b = sha1_S(b,30); \
|
|
}
|
|
|
|
A = state[0];
|
|
B = state[1];
|
|
C = state[2];
|
|
D = state[3];
|
|
E = state[4];
|
|
|
|
#define sha1_F(x,y,z) (z ^ (x & (y ^ z)))
|
|
#define sha1_K 0x5A827999
|
|
|
|
sha1_P(A, B, C, D, E, W[0]);
|
|
sha1_P(E, A, B, C, D, W[1]);
|
|
sha1_P(D, E, A, B, C, W[2]);
|
|
sha1_P(C, D, E, A, B, W[3]);
|
|
sha1_P(B, C, D, E, A, W[4]);
|
|
sha1_P(A, B, C, D, E, W[5]);
|
|
sha1_P(E, A, B, C, D, W[6]);
|
|
sha1_P(D, E, A, B, C, W[7]);
|
|
sha1_P(C, D, E, A, B, W[8]);
|
|
sha1_P(B, C, D, E, A, W[9]);
|
|
sha1_P(A, B, C, D, E, W[10]);
|
|
sha1_P(E, A, B, C, D, W[11]);
|
|
sha1_P(D, E, A, B, C, W[12]);
|
|
sha1_P(C, D, E, A, B, W[13]);
|
|
sha1_P(B, C, D, E, A, W[14]);
|
|
sha1_P(A, B, C, D, E, W[15]);
|
|
sha1_P(E, A, B, C, D, sha1_R(16));
|
|
sha1_P(D, E, A, B, C, sha1_R(17));
|
|
sha1_P(C, D, E, A, B, sha1_R(18));
|
|
sha1_P(B, C, D, E, A, sha1_R(19));
|
|
|
|
#undef sha1_K
|
|
#undef sha1_F
|
|
|
|
#define sha1_F(x,y,z) (x ^ y ^ z)
|
|
#define sha1_K 0x6ED9EBA1
|
|
|
|
sha1_P(A, B, C, D, E, sha1_R(20));
|
|
sha1_P(E, A, B, C, D, sha1_R(21));
|
|
sha1_P(D, E, A, B, C, sha1_R(22));
|
|
sha1_P(C, D, E, A, B, sha1_R(23));
|
|
sha1_P(B, C, D, E, A, sha1_R(24));
|
|
sha1_P(A, B, C, D, E, sha1_R(25));
|
|
sha1_P(E, A, B, C, D, sha1_R(26));
|
|
sha1_P(D, E, A, B, C, sha1_R(27));
|
|
sha1_P(C, D, E, A, B, sha1_R(28));
|
|
sha1_P(B, C, D, E, A, sha1_R(29));
|
|
sha1_P(A, B, C, D, E, sha1_R(30));
|
|
sha1_P(E, A, B, C, D, sha1_R(31));
|
|
sha1_P(D, E, A, B, C, sha1_R(32));
|
|
sha1_P(C, D, E, A, B, sha1_R(33));
|
|
sha1_P(B, C, D, E, A, sha1_R(34));
|
|
sha1_P(A, B, C, D, E, sha1_R(35));
|
|
sha1_P(E, A, B, C, D, sha1_R(36));
|
|
sha1_P(D, E, A, B, C, sha1_R(37));
|
|
sha1_P(C, D, E, A, B, sha1_R(38));
|
|
sha1_P(B, C, D, E, A, sha1_R(39));
|
|
|
|
#undef sha1_K
|
|
#undef sha1_F
|
|
|
|
#define sha1_F(x,y,z) ((x & y) | (z & (x | y)))
|
|
#define sha1_K 0x8F1BBCDC
|
|
|
|
sha1_P(A, B, C, D, E, sha1_R(40));
|
|
sha1_P(E, A, B, C, D, sha1_R(41));
|
|
sha1_P(D, E, A, B, C, sha1_R(42));
|
|
sha1_P(C, D, E, A, B, sha1_R(43));
|
|
sha1_P(B, C, D, E, A, sha1_R(44));
|
|
sha1_P(A, B, C, D, E, sha1_R(45));
|
|
sha1_P(E, A, B, C, D, sha1_R(46));
|
|
sha1_P(D, E, A, B, C, sha1_R(47));
|
|
sha1_P(C, D, E, A, B, sha1_R(48));
|
|
sha1_P(B, C, D, E, A, sha1_R(49));
|
|
sha1_P(A, B, C, D, E, sha1_R(50));
|
|
sha1_P(E, A, B, C, D, sha1_R(51));
|
|
sha1_P(D, E, A, B, C, sha1_R(52));
|
|
sha1_P(C, D, E, A, B, sha1_R(53));
|
|
sha1_P(B, C, D, E, A, sha1_R(54));
|
|
sha1_P(A, B, C, D, E, sha1_R(55));
|
|
sha1_P(E, A, B, C, D, sha1_R(56));
|
|
sha1_P(D, E, A, B, C, sha1_R(57));
|
|
sha1_P(C, D, E, A, B, sha1_R(58));
|
|
sha1_P(B, C, D, E, A, sha1_R(59));
|
|
|
|
#undef sha1_K
|
|
#undef sha1_F
|
|
|
|
#define sha1_F(x,y,z) (x ^ y ^ z)
|
|
#define sha1_K 0xCA62C1D6
|
|
|
|
sha1_P(A, B, C, D, E, sha1_R(60));
|
|
sha1_P(E, A, B, C, D, sha1_R(61));
|
|
sha1_P(D, E, A, B, C, sha1_R(62));
|
|
sha1_P(C, D, E, A, B, sha1_R(63));
|
|
sha1_P(B, C, D, E, A, sha1_R(64));
|
|
sha1_P(A, B, C, D, E, sha1_R(65));
|
|
sha1_P(E, A, B, C, D, sha1_R(66));
|
|
sha1_P(D, E, A, B, C, sha1_R(67));
|
|
sha1_P(C, D, E, A, B, sha1_R(68));
|
|
sha1_P(B, C, D, E, A, sha1_R(69));
|
|
sha1_P(A, B, C, D, E, sha1_R(70));
|
|
sha1_P(E, A, B, C, D, sha1_R(71));
|
|
sha1_P(D, E, A, B, C, sha1_R(72));
|
|
sha1_P(C, D, E, A, B, sha1_R(73));
|
|
sha1_P(B, C, D, E, A, sha1_R(74));
|
|
sha1_P(A, B, C, D, E, sha1_R(75));
|
|
sha1_P(E, A, B, C, D, sha1_R(76));
|
|
sha1_P(D, E, A, B, C, sha1_R(77));
|
|
sha1_P(C, D, E, A, B, sha1_R(78));
|
|
sha1_P(B, C, D, E, A, sha1_R(79));
|
|
|
|
#undef sha1_K
|
|
#undef sha1_F
|
|
|
|
state[0] += A;
|
|
state[1] += B;
|
|
state[2] += C;
|
|
state[3] += D;
|
|
state[4] += E;
|
|
}
|
|
|
|
// Public methods
|
|
|
|
void SHA1Builder::begin(void)
|
|
{
|
|
total[0] = 0;
|
|
total[1] = 0;
|
|
|
|
state[0] = 0x67452301;
|
|
state[1] = 0xEFCDAB89;
|
|
state[2] = 0x98BADCFE;
|
|
state[3] = 0x10325476;
|
|
state[4] = 0xC3D2E1F0;
|
|
|
|
memset(buffer, 0x00, sizeof(buffer));
|
|
memset(hash, 0x00, sizeof(hash));
|
|
}
|
|
|
|
void SHA1Builder::add(const uint8_t* data, size_t len)
|
|
{
|
|
size_t fill;
|
|
uint32_t left;
|
|
|
|
if(len == 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
left = total[0] & 0x3F;
|
|
fill = 64 - left;
|
|
|
|
total[0] += (uint32_t) len;
|
|
total[0] &= 0xFFFFFFFF;
|
|
|
|
if(total[0] < (uint32_t) len)
|
|
{
|
|
total[1]++;
|
|
}
|
|
|
|
if(left && len >= fill)
|
|
{
|
|
memcpy((void *) (buffer + left), data, fill);
|
|
process(buffer);
|
|
data += fill;
|
|
len -= fill;
|
|
left = 0;
|
|
}
|
|
|
|
while(len >= 64)
|
|
{
|
|
process(data);
|
|
data += 64;
|
|
len -= 64;
|
|
}
|
|
|
|
if(len > 0) {
|
|
memcpy((void *) (buffer + left), data, len);
|
|
}
|
|
}
|
|
|
|
void SHA1Builder::addHexString(const char * data)
|
|
{
|
|
uint16_t len = strlen(data);
|
|
uint8_t * tmp = (uint8_t*)malloc(len/2);
|
|
if(tmp == NULL) {
|
|
return;
|
|
}
|
|
hex2bytes(tmp, len/2, data);
|
|
add(tmp, len/2);
|
|
free(tmp);
|
|
}
|
|
|
|
bool SHA1Builder::addStream(Stream & stream, const size_t maxLen)
|
|
{
|
|
const int buf_size = 512;
|
|
int maxLengthLeft = maxLen;
|
|
uint8_t * buf = (uint8_t*) malloc(buf_size);
|
|
|
|
if(!buf) {
|
|
return false;
|
|
}
|
|
|
|
int bytesAvailable = stream.available();
|
|
while((bytesAvailable > 0) && (maxLengthLeft > 0)) {
|
|
|
|
// determine number of bytes to read
|
|
int readBytes = bytesAvailable;
|
|
if(readBytes > maxLengthLeft) {
|
|
readBytes = maxLengthLeft ; // read only until max_len
|
|
}
|
|
if(readBytes > buf_size) {
|
|
readBytes = buf_size; // not read more the buffer can handle
|
|
}
|
|
|
|
// read data and check if we got something
|
|
int numBytesRead = stream.readBytes(buf, readBytes);
|
|
if(numBytesRead< 1) {
|
|
free(buf);
|
|
return false;
|
|
}
|
|
|
|
// Update SHA1 with buffer payload
|
|
add(buf, numBytesRead);
|
|
|
|
// update available number of bytes
|
|
maxLengthLeft -= numBytesRead;
|
|
bytesAvailable = stream.available();
|
|
}
|
|
free(buf);
|
|
return true;
|
|
}
|
|
|
|
void SHA1Builder::calculate(void)
|
|
{
|
|
uint32_t last, padn;
|
|
uint32_t high, low;
|
|
uint8_t msglen[8];
|
|
|
|
high = (total[0] >> 29) | (total[1] << 3);
|
|
low = (total[0] << 3);
|
|
|
|
PUT_UINT32_BE(high, msglen, 0);
|
|
PUT_UINT32_BE(low, msglen, 4);
|
|
|
|
last = total[0] & 0x3F;
|
|
padn = (last < 56) ? (56 - last) : (120 - last);
|
|
|
|
add((uint8_t*)sha1_padding, padn);
|
|
add(msglen, 8);
|
|
|
|
PUT_UINT32_BE(state[0], hash, 0);
|
|
PUT_UINT32_BE(state[1], hash, 4);
|
|
PUT_UINT32_BE(state[2], hash, 8);
|
|
PUT_UINT32_BE(state[3], hash, 12);
|
|
PUT_UINT32_BE(state[4], hash, 16);
|
|
}
|
|
|
|
void SHA1Builder::getBytes(uint8_t * output)
|
|
{
|
|
memcpy(output, hash, SHA1_HASH_SIZE);
|
|
}
|
|
|
|
void SHA1Builder::getChars(char * output)
|
|
{
|
|
bytes2hex(output, SHA1_HASH_SIZE*2+1, hash, SHA1_HASH_SIZE);
|
|
}
|
|
|
|
String SHA1Builder::toString(void)
|
|
{
|
|
char out[(SHA1_HASH_SIZE * 2) + 1];
|
|
getChars(out);
|
|
return String(out);
|
|
}
|