mirror of
https://github.com/morrownr/8821cu-20210916.git
synced 2024-11-19 20:10:08 +00:00
231 lines
6.0 KiB
C
231 lines
6.0 KiB
C
|
/*
|
||
|
|
* SHA-256 hash implementation and interface functions
|
||
|
|
* Copyright (c) 2003-2011, Jouni Malinen <j@w1.fi>
|
||
|
|
*
|
||
|
|
* This software may be distributed under the terms of the BSD license.
|
||
|
|
* See README for more details.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "rtw_crypto_wrap.h"
|
||
|
|
|
||
|
|
//#include "common.h"
|
||
|
|
#include "sha256.h"
|
||
|
|
#include "sha256_i.h"
|
||
|
|
//#include "crypto.h"
|
||
|
|
#include "wlancrypto_wrap.h"
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* sha256_vector - SHA256 hash for data vector
|
||
|
|
* @num_elem: Number of elements in the data vector
|
||
|
|
* @addr: Pointers to the data areas
|
||
|
|
* @len: Lengths of the data blocks
|
||
|
|
* @mac: Buffer for the hash
|
||
|
|
* Returns: 0 on success, -1 of failure
|
||
|
|
*/
|
||
|
|
int sha256_vector(size_t num_elem, const u8 *addr[], const size_t *len,
|
||
|
|
u8 *mac)
|
||
|
|
{
|
||
|
|
struct _sha256_state ctx;
|
||
|
|
size_t i;
|
||
|
|
|
||
|
|
if (TEST_FAIL())
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
_sha256_init(&ctx);
|
||
|
|
for (i = 0; i < num_elem; i++)
|
||
|
|
if (sha256_process(&ctx, addr[i], len[i]))
|
||
|
|
return -1;
|
||
|
|
if (sha256_done(&ctx, mac))
|
||
|
|
return -1;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* ===== start - public domain SHA256 implementation ===== */
|
||
|
|
|
||
|
|
/* This is based on SHA256 implementation in LibTomCrypt that was released into
|
||
|
|
* public domain by Tom St Denis. */
|
||
|
|
|
||
|
|
/* the K array */
|
||
|
|
static const unsigned long K[64] = {
|
||
|
|
0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL, 0x3956c25bUL,
|
||
|
|
0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL, 0xd807aa98UL, 0x12835b01UL,
|
||
|
|
0x243185beUL, 0x550c7dc3UL, 0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL,
|
||
|
|
0xc19bf174UL, 0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
|
||
|
|
0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL, 0x983e5152UL,
|
||
|
|
0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL, 0xc6e00bf3UL, 0xd5a79147UL,
|
||
|
|
0x06ca6351UL, 0x14292967UL, 0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL,
|
||
|
|
0x53380d13UL, 0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
|
||
|
|
0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL, 0xd192e819UL,
|
||
|
|
0xd6990624UL, 0xf40e3585UL, 0x106aa070UL, 0x19a4c116UL, 0x1e376c08UL,
|
||
|
|
0x2748774cUL, 0x34b0bcb5UL, 0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL,
|
||
|
|
0x682e6ff3UL, 0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
|
||
|
|
0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* Various logical functions */
|
||
|
|
#define RORc(x, y) \
|
||
|
|
( ((((unsigned long) (x) & 0xFFFFFFFFUL) >> (unsigned long) ((y) & 31)) | \
|
||
|
|
((unsigned long) (x) << (unsigned long) (32 - ((y) & 31)))) & 0xFFFFFFFFUL)
|
||
|
|
#define Ch(x,y,z) (z ^ (x & (y ^ z)))
|
||
|
|
#define Maj(x,y,z) (((x | y) & z) | (x & y))
|
||
|
|
#define S(x, n) RORc((x), (n))
|
||
|
|
#define R(x, n) (((x)&0xFFFFFFFFUL)>>(n))
|
||
|
|
#define Sigma0(x) (S(x, 2) ^ S(x, 13) ^ S(x, 22))
|
||
|
|
#define Sigma1(x) (S(x, 6) ^ S(x, 11) ^ S(x, 25))
|
||
|
|
#define Gamma0(x) (S(x, 7) ^ S(x, 18) ^ R(x, 3))
|
||
|
|
#define Gamma1(x) (S(x, 17) ^ S(x, 19) ^ R(x, 10))
|
||
|
|
#ifndef MIN
|
||
|
|
#define MIN(x, y) (((x) < (y)) ? (x) : (y))
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* compress 512-bits */
|
||
|
|
static int sha256_compress(struct _sha256_state *md, unsigned char *buf)
|
||
|
|
{
|
||
|
|
u32 S[8], W[64], t0, t1;
|
||
|
|
u32 t;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
/* copy state into S */
|
||
|
|
for (i = 0; i < 8; i++) {
|
||
|
|
S[i] = md->state[i];
|
||
|
|
}
|
||
|
|
|
||
|
|
/* copy the state into 512-bits into W[0..15] */
|
||
|
|
for (i = 0; i < 16; i++)
|
||
|
|
W[i] = WPA_GET_BE32(buf + (4 * i));
|
||
|
|
|
||
|
|
/* fill W[16..63] */
|
||
|
|
for (i = 16; i < 64; i++) {
|
||
|
|
W[i] = Gamma1(W[i - 2]) + W[i - 7] + Gamma0(W[i - 15]) +
|
||
|
|
W[i - 16];
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Compress */
|
||
|
|
#define RND(a,b,c,d,e,f,g,h,i) \
|
||
|
|
t0 = h + Sigma1(e) + Ch(e, f, g) + K[i] + W[i]; \
|
||
|
|
t1 = Sigma0(a) + Maj(a, b, c); \
|
||
|
|
d += t0; \
|
||
|
|
h = t0 + t1;
|
||
|
|
|
||
|
|
for (i = 0; i < 64; ++i) {
|
||
|
|
RND(S[0], S[1], S[2], S[3], S[4], S[5], S[6], S[7], i);
|
||
|
|
t = S[7]; S[7] = S[6]; S[6] = S[5]; S[5] = S[4];
|
||
|
|
S[4] = S[3]; S[3] = S[2]; S[2] = S[1]; S[1] = S[0]; S[0] = t;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* feedback */
|
||
|
|
for (i = 0; i < 8; i++) {
|
||
|
|
md->state[i] = md->state[i] + S[i];
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* Initialize the hash state */
|
||
|
|
void _sha256_init(struct _sha256_state *md)
|
||
|
|
{
|
||
|
|
md->curlen = 0;
|
||
|
|
md->length = 0;
|
||
|
|
md->state[0] = 0x6A09E667UL;
|
||
|
|
md->state[1] = 0xBB67AE85UL;
|
||
|
|
md->state[2] = 0x3C6EF372UL;
|
||
|
|
md->state[3] = 0xA54FF53AUL;
|
||
|
|
md->state[4] = 0x510E527FUL;
|
||
|
|
md->state[5] = 0x9B05688CUL;
|
||
|
|
md->state[6] = 0x1F83D9ABUL;
|
||
|
|
md->state[7] = 0x5BE0CD19UL;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
Process a block of memory though the hash
|
||
|
|
@param md The hash state
|
||
|
|
@param in The data to hash
|
||
|
|
@param inlen The length of the data (octets)
|
||
|
|
@return CRYPT_OK if successful
|
||
|
|
*/
|
||
|
|
int sha256_process(struct _sha256_state *md, const unsigned char *in,
|
||
|
|
unsigned long inlen)
|
||
|
|
{
|
||
|
|
unsigned long n;
|
||
|
|
|
||
|
|
if (md->curlen >= sizeof(md->buf))
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
while (inlen > 0) {
|
||
|
|
if (md->curlen == 0 && inlen >= SHA256_BLOCK_SIZE) {
|
||
|
|
if (sha256_compress(md, (unsigned char *) in) < 0)
|
||
|
|
return -1;
|
||
|
|
md->length += SHA256_BLOCK_SIZE * 8;
|
||
|
|
in += SHA256_BLOCK_SIZE;
|
||
|
|
inlen -= SHA256_BLOCK_SIZE;
|
||
|
|
} else {
|
||
|
|
n = MIN(inlen, (SHA256_BLOCK_SIZE - md->curlen));
|
||
|
|
os_memcpy(md->buf + md->curlen, in, n);
|
||
|
|
md->curlen += n;
|
||
|
|
in += n;
|
||
|
|
inlen -= n;
|
||
|
|
if (md->curlen == SHA256_BLOCK_SIZE) {
|
||
|
|
if (sha256_compress(md, md->buf) < 0)
|
||
|
|
return -1;
|
||
|
|
md->length += 8 * SHA256_BLOCK_SIZE;
|
||
|
|
md->curlen = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
Terminate the hash to get the digest
|
||
|
|
@param md The hash state
|
||
|
|
@param out [out] The destination of the hash (32 bytes)
|
||
|
|
@return CRYPT_OK if successful
|
||
|
|
*/
|
||
|
|
int sha256_done(struct _sha256_state *md, unsigned char *out)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
|
||
|
|
if (md->curlen >= sizeof(md->buf))
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
/* increase the length of the message */
|
||
|
|
md->length += md->curlen * 8;
|
||
|
|
|
||
|
|
/* append the '1' bit */
|
||
|
|
md->buf[md->curlen++] = (unsigned char) 0x80;
|
||
|
|
|
||
|
|
/* if the length is currently above 56 bytes we append zeros
|
||
|
|
* then compress. Then we can fall back to padding zeros and length
|
||
|
|
* encoding like normal.
|
||
|
|
*/
|
||
|
|
if (md->curlen > 56) {
|
||
|
|
while (md->curlen < SHA256_BLOCK_SIZE) {
|
||
|
|
md->buf[md->curlen++] = (unsigned char) 0;
|
||
|
|
}
|
||
|
|
sha256_compress(md, md->buf);
|
||
|
|
md->curlen = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* pad up to 56 bytes of zeroes */
|
||
|
|
while (md->curlen < 56) {
|
||
|
|
md->buf[md->curlen++] = (unsigned char) 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* store length */
|
||
|
|
WPA_PUT_BE64(md->buf + 56, md->length);
|
||
|
|
sha256_compress(md, md->buf);
|
||
|
|
|
||
|
|
/* copy output */
|
||
|
|
for (i = 0; i < 8; i++)
|
||
|
|
WPA_PUT_BE32(out + (4 * i), md->state[i]);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* ===== end - public domain SHA256 implementation ===== */
|