mirror of
https://github.com/subhobhai943/SUB-OS.git
synced 2026-10-25 16:52:29 +00:00
187 lines
6.0 KiB
C
187 lines
6.0 KiB
C
#include <crypto/crypto.h>
|
|
#include <lib/string.h>
|
|
#include <lib/printf.h>
|
|
|
|
#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
|
|
#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
|
|
#define H(x, y, z) ((x) ^ (y) ^ (z))
|
|
#define I(x, y, z) ((y) ^ ((x) | (~z)))
|
|
|
|
#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32 - (n))))
|
|
|
|
#define FF(a, b, c, d, x, s, ac) { \
|
|
(a) += F((b), (c), (d)) + (x) + (uint32_t)(ac); \
|
|
(a) = ROTATE_LEFT((a), (s)); \
|
|
(a) += (b); \
|
|
}
|
|
#define GG(a, b, c, d, x, s, ac) { \
|
|
(a) += G((b), (c), (d)) + (x) + (uint32_t)(ac); \
|
|
(a) = ROTATE_LEFT((a), (s)); \
|
|
(a) += (b); \
|
|
}
|
|
#define HH(a, b, c, d, x, s, ac) { \
|
|
(a) += H((b), (c), (d)) + (x) + (uint32_t)(ac); \
|
|
(a) = ROTATE_LEFT((a), (s)); \
|
|
(a) += (b); \
|
|
}
|
|
#define II(a, b, c, d, x, s, ac) { \
|
|
(a) += I((b), (c), (d)) + (x) + (uint32_t)(ac); \
|
|
(a) = ROTATE_LEFT((a), (s)); \
|
|
(a) += (b); \
|
|
}
|
|
|
|
static void md5_transform(uint32_t state[4], const uint8_t block[64]) {
|
|
uint32_t a = state[0], b = state[1], c = state[2], d = state[3], x[16];
|
|
|
|
for (int i = 0, j = 0; j < 64; i++, j += 4) {
|
|
x[i] = ((uint32_t)block[j]) | (((uint32_t)block[j + 1]) << 8) |
|
|
(((uint32_t)block[j + 2]) << 16) | (((uint32_t)block[j + 3]) << 24);
|
|
}
|
|
|
|
// Round 1
|
|
FF(a, b, c, d, x[0], 7, 0xd76aa478);
|
|
FF(d, a, b, c, x[1], 12, 0xe8c7b756);
|
|
FF(c, d, a, b, x[2], 17, 0x242070db);
|
|
FF(b, c, d, a, x[3], 22, 0xc1bdceee);
|
|
FF(a, b, c, d, x[4], 7, 0xf57c0faf);
|
|
FF(d, a, b, c, x[5], 12, 0x4787c62a);
|
|
FF(c, d, a, b, x[6], 17, 0xa8304613);
|
|
FF(b, c, d, a, x[7], 22, 0xfd469501);
|
|
FF(a, b, c, d, x[8], 7, 0x698098d8);
|
|
FF(d, a, b, c, x[9], 12, 0x8b44f7af);
|
|
FF(c, d, a, b, x[10], 17, 0xffff5bb1);
|
|
FF(b, c, d, a, x[11], 22, 0x895cd7be);
|
|
FF(a, b, c, d, x[12], 7, 0x6b901122);
|
|
FF(d, a, b, c, x[13], 12, 0xfd987193);
|
|
FF(c, d, a, b, x[14], 17, 0xa679438e);
|
|
FF(b, c, d, a, x[15], 22, 0x49b40821);
|
|
|
|
// Round 2
|
|
GG(a, b, c, d, x[1], 5, 0xf61e2562);
|
|
GG(d, a, b, c, x[6], 9, 0xc040b340);
|
|
GG(c, d, a, b, x[11], 14, 0x265e5a51);
|
|
GG(b, c, d, a, x[0], 20, 0xe9b6c7aa);
|
|
GG(a, b, c, d, x[5], 5, 0xd62f105d);
|
|
GG(d, a, b, c, x[10], 9, 0x02441453);
|
|
GG(c, d, a, b, x[15], 14, 0xd8a1e681);
|
|
GG(b, c, d, a, x[4], 20, 0xe7d3fbc8);
|
|
GG(a, b, c, d, x[9], 5, 0x21e1cde6);
|
|
GG(d, a, b, c, x[14], 9, 0xc33707d6);
|
|
GG(c, d, a, b, x[3], 14, 0xf4d50d87);
|
|
GG(b, c, d, a, x[8], 20, 0x455a14ed);
|
|
GG(a, b, c, d, x[13], 5, 0xa9e3e905);
|
|
GG(d, a, b, c, x[2], 9, 0xfcefa3f8);
|
|
GG(c, d, a, b, x[7], 14, 0x676f02d9);
|
|
GG(b, c, d, a, x[12], 20, 0x8d2a4c8a);
|
|
|
|
// Round 3
|
|
HH(a, b, c, d, x[5], 4, 0xfffa3942);
|
|
HH(d, a, b, c, x[8], 11, 0x8771f681);
|
|
HH(c, d, a, b, x[11], 16, 0x6d9d6122);
|
|
HH(b, c, d, a, x[14], 23, 0xfde5380c);
|
|
HH(a, b, c, d, x[1], 4, 0xa4beea44);
|
|
HH(d, a, b, c, x[4], 11, 0x4bdecfa9);
|
|
HH(c, d, a, b, x[7], 16, 0xf6bb4b60);
|
|
HH(b, c, d, a, x[10], 23, 0xbebfbc70);
|
|
HH(a, b, c, d, x[13], 4, 0x289b7ec6);
|
|
HH(d, a, b, c, x[0], 11, 0xeaa127fa);
|
|
HH(c, d, a, b, x[3], 16, 0xd4ef3085);
|
|
HH(b, c, d, a, x[6], 23, 0x04881d05);
|
|
HH(a, b, c, d, x[9], 4, 0xd9d4d039);
|
|
HH(d, a, b, c, x[12], 11, 0xe6db99e5);
|
|
HH(c, d, a, b, x[15], 16, 0x1fa27cf8);
|
|
HH(b, c, d, a, x[2], 23, 0xc4ac5665);
|
|
|
|
// Round 4
|
|
II(a, b, c, d, x[0], 6, 0xf4292244);
|
|
II(d, a, b, c, x[7], 10, 0x432aff97);
|
|
II(c, d, a, b, x[14], 15, 0xab9423a7);
|
|
II(b, c, d, a, x[5], 21, 0xfc93a039);
|
|
II(a, b, c, d, x[12], 6, 0x655b59c3);
|
|
II(d, a, b, c, x[3], 10, 0x8f0ccc92);
|
|
II(c, d, a, b, x[10], 15, 0xffeff47d);
|
|
II(b, c, d, a, x[1], 21, 0x85845dd1);
|
|
II(a, b, c, d, x[8], 6, 0x6fa87e4f);
|
|
II(d, a, b, c, x[15], 10, 0xfe2ce6e0);
|
|
II(c, d, a, b, x[6], 15, 0xa3014314);
|
|
II(b, c, d, a, x[13], 21, 0x4e0811a1);
|
|
II(a, b, c, d, x[4], 6, 0xf7537e82);
|
|
II(d, a, b, c, x[11], 10, 0xbd3af235);
|
|
II(c, d, a, b, x[2], 15, 0x2ad7d2bb);
|
|
II(b, c, d, a, x[9], 21, 0xeb86d391);
|
|
|
|
state[0] += a;
|
|
state[1] += b;
|
|
state[2] += c;
|
|
state[3] += d;
|
|
}
|
|
|
|
void md5_init(md5_ctx_t* ctx) {
|
|
ctx->count[0] = ctx->count[1] = 0;
|
|
ctx->state[0] = 0x67452301;
|
|
ctx->state[1] = 0xefcdab89;
|
|
ctx->state[2] = 0x98badcfe;
|
|
ctx->state[3] = 0x10325476;
|
|
}
|
|
|
|
void md5_update(md5_ctx_t* ctx, const void* input, size_t input_len) {
|
|
uint32_t i, index, part_len;
|
|
const uint8_t* buf = (const uint8_t*)input;
|
|
|
|
index = (uint32_t)((ctx->count[0] >> 3) & 0x3F);
|
|
if ((ctx->count[0] += ((uint32_t)input_len << 3)) < ((uint32_t)input_len << 3)) {
|
|
ctx->count[1]++;
|
|
}
|
|
ctx->count[1] += ((uint32_t)input_len >> 29);
|
|
part_len = 64 - index;
|
|
|
|
if (input_len >= part_len) {
|
|
memcpy(&ctx->buffer[index], buf, part_len);
|
|
md5_transform(ctx->state, ctx->buffer);
|
|
for (i = part_len; i + 63 < input_len; i += 64) {
|
|
md5_transform(ctx->state, &buf[i]);
|
|
}
|
|
index = 0;
|
|
} else {
|
|
i = 0;
|
|
}
|
|
|
|
memcpy(&ctx->buffer[index], &buf[i], input_len - i);
|
|
}
|
|
|
|
void md5_final(uint8_t digest[16], md5_ctx_t* ctx) {
|
|
static const uint8_t PADDING[64] = { 0x80 };
|
|
uint8_t bits[8];
|
|
uint32_t index, pad_len;
|
|
|
|
for (int i = 0; i < 4; i++) {
|
|
bits[i] = (uint8_t)((ctx->count[0] >> (i * 8)) & 0xFF);
|
|
bits[i + 4] = (uint8_t)((ctx->count[1] >> (i * 8)) & 0xFF);
|
|
}
|
|
|
|
index = (uint32_t)((ctx->count[0] >> 3) & 0x3F);
|
|
pad_len = (index < 56) ? (56 - index) : (120 - index);
|
|
md5_update(ctx, PADDING, pad_len);
|
|
md5_update(ctx, bits, 8);
|
|
|
|
for (int i = 0; i < 4; i++) {
|
|
digest[i] = (uint8_t)((ctx->state[0] >> (i * 8)) & 0xFF);
|
|
digest[i + 4] = (uint8_t)((ctx->state[1] >> (i * 8)) & 0xFF);
|
|
digest[i + 8] = (uint8_t)((ctx->state[2] >> (i * 8)) & 0xFF);
|
|
digest[i + 12] = (uint8_t)((ctx->state[3] >> (i * 8)) & 0xFF);
|
|
}
|
|
}
|
|
|
|
void md5_string(const char* str, char output[33]) {
|
|
md5_ctx_t ctx;
|
|
uint8_t digest[16];
|
|
md5_init(&ctx);
|
|
md5_update(&ctx, str, strlen(str));
|
|
md5_final(digest, &ctx);
|
|
|
|
for (int i = 0; i < 16; i++) {
|
|
sprintf(output + i * 2, "%02x", digest[i]);
|
|
}
|
|
output[32] = '\0';
|
|
}
|