mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 19:10:13 +00:00
29caf9305b
Globally replace all occurances of WATCHDOG_RESET() with schedule(), which handles the HW_WATCHDOG functionality and the cyclic infrastructure. Signed-off-by: Stefan Roese <sr@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Tom Rini <trini@konsulko.com> [am335x_evm, mx6cuboxi, rpi_3,dra7xx_evm, pine64_plus, am65x_evm, j721e_evm]
303 lines
8.5 KiB
C
303 lines
8.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* FIPS-180-2 compliant SHA-256 implementation
|
|
*
|
|
* Copyright (C) 2001-2003 Christophe Devine
|
|
*/
|
|
|
|
#ifndef USE_HOSTCC
|
|
#include <common.h>
|
|
#include <linux/string.h>
|
|
#else
|
|
#include <string.h>
|
|
#endif /* USE_HOSTCC */
|
|
#include <watchdog.h>
|
|
#include <u-boot/sha256.h>
|
|
|
|
#include <linux/compiler_attributes.h>
|
|
|
|
const uint8_t sha256_der_prefix[SHA256_DER_LEN] = {
|
|
0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86,
|
|
0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x05,
|
|
0x00, 0x04, 0x20
|
|
};
|
|
|
|
/*
|
|
* 32-bit integer manipulation macros (big endian)
|
|
*/
|
|
#ifndef GET_UINT32_BE
|
|
#define GET_UINT32_BE(n,b,i) { \
|
|
(n) = ( (unsigned long) (b)[(i) ] << 24 ) \
|
|
| ( (unsigned long) (b)[(i) + 1] << 16 ) \
|
|
| ( (unsigned long) (b)[(i) + 2] << 8 ) \
|
|
| ( (unsigned long) (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 sha256_starts(sha256_context * ctx)
|
|
{
|
|
ctx->total[0] = 0;
|
|
ctx->total[1] = 0;
|
|
|
|
ctx->state[0] = 0x6A09E667;
|
|
ctx->state[1] = 0xBB67AE85;
|
|
ctx->state[2] = 0x3C6EF372;
|
|
ctx->state[3] = 0xA54FF53A;
|
|
ctx->state[4] = 0x510E527F;
|
|
ctx->state[5] = 0x9B05688C;
|
|
ctx->state[6] = 0x1F83D9AB;
|
|
ctx->state[7] = 0x5BE0CD19;
|
|
}
|
|
|
|
static void sha256_process_one(sha256_context *ctx, const uint8_t data[64])
|
|
{
|
|
uint32_t temp1, temp2;
|
|
uint32_t W[64];
|
|
uint32_t A, B, C, D, E, F, G, H;
|
|
|
|
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 SHR(x,n) ((x & 0xFFFFFFFF) >> n)
|
|
#define ROTR(x,n) (SHR(x,n) | (x << (32 - n)))
|
|
|
|
#define S0(x) (ROTR(x, 7) ^ ROTR(x,18) ^ SHR(x, 3))
|
|
#define S1(x) (ROTR(x,17) ^ ROTR(x,19) ^ SHR(x,10))
|
|
|
|
#define S2(x) (ROTR(x, 2) ^ ROTR(x,13) ^ ROTR(x,22))
|
|
#define S3(x) (ROTR(x, 6) ^ ROTR(x,11) ^ ROTR(x,25))
|
|
|
|
#define F0(x,y,z) ((x & y) | (z & (x | y)))
|
|
#define F1(x,y,z) (z ^ (x & (y ^ z)))
|
|
|
|
#define R(t) \
|
|
( \
|
|
W[t] = S1(W[t - 2]) + W[t - 7] + \
|
|
S0(W[t - 15]) + W[t - 16] \
|
|
)
|
|
|
|
#define P(a,b,c,d,e,f,g,h,x,K) { \
|
|
temp1 = h + S3(e) + F1(e,f,g) + K + x; \
|
|
temp2 = S2(a) + F0(a,b,c); \
|
|
d += temp1; h = temp1 + temp2; \
|
|
}
|
|
|
|
A = ctx->state[0];
|
|
B = ctx->state[1];
|
|
C = ctx->state[2];
|
|
D = ctx->state[3];
|
|
E = ctx->state[4];
|
|
F = ctx->state[5];
|
|
G = ctx->state[6];
|
|
H = ctx->state[7];
|
|
|
|
P(A, B, C, D, E, F, G, H, W[0], 0x428A2F98);
|
|
P(H, A, B, C, D, E, F, G, W[1], 0x71374491);
|
|
P(G, H, A, B, C, D, E, F, W[2], 0xB5C0FBCF);
|
|
P(F, G, H, A, B, C, D, E, W[3], 0xE9B5DBA5);
|
|
P(E, F, G, H, A, B, C, D, W[4], 0x3956C25B);
|
|
P(D, E, F, G, H, A, B, C, W[5], 0x59F111F1);
|
|
P(C, D, E, F, G, H, A, B, W[6], 0x923F82A4);
|
|
P(B, C, D, E, F, G, H, A, W[7], 0xAB1C5ED5);
|
|
P(A, B, C, D, E, F, G, H, W[8], 0xD807AA98);
|
|
P(H, A, B, C, D, E, F, G, W[9], 0x12835B01);
|
|
P(G, H, A, B, C, D, E, F, W[10], 0x243185BE);
|
|
P(F, G, H, A, B, C, D, E, W[11], 0x550C7DC3);
|
|
P(E, F, G, H, A, B, C, D, W[12], 0x72BE5D74);
|
|
P(D, E, F, G, H, A, B, C, W[13], 0x80DEB1FE);
|
|
P(C, D, E, F, G, H, A, B, W[14], 0x9BDC06A7);
|
|
P(B, C, D, E, F, G, H, A, W[15], 0xC19BF174);
|
|
P(A, B, C, D, E, F, G, H, R(16), 0xE49B69C1);
|
|
P(H, A, B, C, D, E, F, G, R(17), 0xEFBE4786);
|
|
P(G, H, A, B, C, D, E, F, R(18), 0x0FC19DC6);
|
|
P(F, G, H, A, B, C, D, E, R(19), 0x240CA1CC);
|
|
P(E, F, G, H, A, B, C, D, R(20), 0x2DE92C6F);
|
|
P(D, E, F, G, H, A, B, C, R(21), 0x4A7484AA);
|
|
P(C, D, E, F, G, H, A, B, R(22), 0x5CB0A9DC);
|
|
P(B, C, D, E, F, G, H, A, R(23), 0x76F988DA);
|
|
P(A, B, C, D, E, F, G, H, R(24), 0x983E5152);
|
|
P(H, A, B, C, D, E, F, G, R(25), 0xA831C66D);
|
|
P(G, H, A, B, C, D, E, F, R(26), 0xB00327C8);
|
|
P(F, G, H, A, B, C, D, E, R(27), 0xBF597FC7);
|
|
P(E, F, G, H, A, B, C, D, R(28), 0xC6E00BF3);
|
|
P(D, E, F, G, H, A, B, C, R(29), 0xD5A79147);
|
|
P(C, D, E, F, G, H, A, B, R(30), 0x06CA6351);
|
|
P(B, C, D, E, F, G, H, A, R(31), 0x14292967);
|
|
P(A, B, C, D, E, F, G, H, R(32), 0x27B70A85);
|
|
P(H, A, B, C, D, E, F, G, R(33), 0x2E1B2138);
|
|
P(G, H, A, B, C, D, E, F, R(34), 0x4D2C6DFC);
|
|
P(F, G, H, A, B, C, D, E, R(35), 0x53380D13);
|
|
P(E, F, G, H, A, B, C, D, R(36), 0x650A7354);
|
|
P(D, E, F, G, H, A, B, C, R(37), 0x766A0ABB);
|
|
P(C, D, E, F, G, H, A, B, R(38), 0x81C2C92E);
|
|
P(B, C, D, E, F, G, H, A, R(39), 0x92722C85);
|
|
P(A, B, C, D, E, F, G, H, R(40), 0xA2BFE8A1);
|
|
P(H, A, B, C, D, E, F, G, R(41), 0xA81A664B);
|
|
P(G, H, A, B, C, D, E, F, R(42), 0xC24B8B70);
|
|
P(F, G, H, A, B, C, D, E, R(43), 0xC76C51A3);
|
|
P(E, F, G, H, A, B, C, D, R(44), 0xD192E819);
|
|
P(D, E, F, G, H, A, B, C, R(45), 0xD6990624);
|
|
P(C, D, E, F, G, H, A, B, R(46), 0xF40E3585);
|
|
P(B, C, D, E, F, G, H, A, R(47), 0x106AA070);
|
|
P(A, B, C, D, E, F, G, H, R(48), 0x19A4C116);
|
|
P(H, A, B, C, D, E, F, G, R(49), 0x1E376C08);
|
|
P(G, H, A, B, C, D, E, F, R(50), 0x2748774C);
|
|
P(F, G, H, A, B, C, D, E, R(51), 0x34B0BCB5);
|
|
P(E, F, G, H, A, B, C, D, R(52), 0x391C0CB3);
|
|
P(D, E, F, G, H, A, B, C, R(53), 0x4ED8AA4A);
|
|
P(C, D, E, F, G, H, A, B, R(54), 0x5B9CCA4F);
|
|
P(B, C, D, E, F, G, H, A, R(55), 0x682E6FF3);
|
|
P(A, B, C, D, E, F, G, H, R(56), 0x748F82EE);
|
|
P(H, A, B, C, D, E, F, G, R(57), 0x78A5636F);
|
|
P(G, H, A, B, C, D, E, F, R(58), 0x84C87814);
|
|
P(F, G, H, A, B, C, D, E, R(59), 0x8CC70208);
|
|
P(E, F, G, H, A, B, C, D, R(60), 0x90BEFFFA);
|
|
P(D, E, F, G, H, A, B, C, R(61), 0xA4506CEB);
|
|
P(C, D, E, F, G, H, A, B, R(62), 0xBEF9A3F7);
|
|
P(B, C, D, E, F, G, H, A, R(63), 0xC67178F2);
|
|
|
|
ctx->state[0] += A;
|
|
ctx->state[1] += B;
|
|
ctx->state[2] += C;
|
|
ctx->state[3] += D;
|
|
ctx->state[4] += E;
|
|
ctx->state[5] += F;
|
|
ctx->state[6] += G;
|
|
ctx->state[7] += H;
|
|
}
|
|
|
|
__weak void sha256_process(sha256_context *ctx, const unsigned char *data,
|
|
unsigned int blocks)
|
|
{
|
|
if (!blocks)
|
|
return;
|
|
|
|
while (blocks--) {
|
|
sha256_process_one(ctx, data);
|
|
data += 64;
|
|
}
|
|
}
|
|
|
|
void sha256_update(sha256_context *ctx, const uint8_t *input, uint32_t length)
|
|
{
|
|
uint32_t left, fill;
|
|
|
|
if (!length)
|
|
return;
|
|
|
|
left = ctx->total[0] & 0x3F;
|
|
fill = 64 - left;
|
|
|
|
ctx->total[0] += length;
|
|
ctx->total[0] &= 0xFFFFFFFF;
|
|
|
|
if (ctx->total[0] < length)
|
|
ctx->total[1]++;
|
|
|
|
if (left && length >= fill) {
|
|
memcpy((void *) (ctx->buffer + left), (void *) input, fill);
|
|
sha256_process(ctx, ctx->buffer, 1);
|
|
length -= fill;
|
|
input += fill;
|
|
left = 0;
|
|
}
|
|
|
|
sha256_process(ctx, input, length / 64);
|
|
input += length / 64 * 64;
|
|
length = length % 64;
|
|
|
|
if (length)
|
|
memcpy((void *) (ctx->buffer + left), (void *) input, length);
|
|
}
|
|
|
|
static uint8_t sha256_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
|
|
};
|
|
|
|
void sha256_finish(sha256_context * ctx, uint8_t digest[32])
|
|
{
|
|
uint32_t last, padn;
|
|
uint32_t high, low;
|
|
uint8_t msglen[8];
|
|
|
|
high = ((ctx->total[0] >> 29)
|
|
| (ctx->total[1] << 3));
|
|
low = (ctx->total[0] << 3);
|
|
|
|
PUT_UINT32_BE(high, msglen, 0);
|
|
PUT_UINT32_BE(low, msglen, 4);
|
|
|
|
last = ctx->total[0] & 0x3F;
|
|
padn = (last < 56) ? (56 - last) : (120 - last);
|
|
|
|
sha256_update(ctx, sha256_padding, padn);
|
|
sha256_update(ctx, msglen, 8);
|
|
|
|
PUT_UINT32_BE(ctx->state[0], digest, 0);
|
|
PUT_UINT32_BE(ctx->state[1], digest, 4);
|
|
PUT_UINT32_BE(ctx->state[2], digest, 8);
|
|
PUT_UINT32_BE(ctx->state[3], digest, 12);
|
|
PUT_UINT32_BE(ctx->state[4], digest, 16);
|
|
PUT_UINT32_BE(ctx->state[5], digest, 20);
|
|
PUT_UINT32_BE(ctx->state[6], digest, 24);
|
|
PUT_UINT32_BE(ctx->state[7], digest, 28);
|
|
}
|
|
|
|
/*
|
|
* Output = SHA-256( input buffer ). Trigger the watchdog every 'chunk_sz'
|
|
* bytes of input processed.
|
|
*/
|
|
void sha256_csum_wd(const unsigned char *input, unsigned int ilen,
|
|
unsigned char *output, unsigned int chunk_sz)
|
|
{
|
|
sha256_context ctx;
|
|
#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
|
|
const unsigned char *end;
|
|
unsigned char *curr;
|
|
int chunk;
|
|
#endif
|
|
|
|
sha256_starts(&ctx);
|
|
|
|
#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
|
|
curr = (unsigned char *)input;
|
|
end = input + ilen;
|
|
while (curr < end) {
|
|
chunk = end - curr;
|
|
if (chunk > chunk_sz)
|
|
chunk = chunk_sz;
|
|
sha256_update(&ctx, curr, chunk);
|
|
curr += chunk;
|
|
schedule();
|
|
}
|
|
#else
|
|
sha256_update(&ctx, input, ilen);
|
|
#endif
|
|
|
|
sha256_finish(&ctx, output);
|
|
}
|