48 #define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits)))) 51 #define blk0(i) (block[i] = AV_RB32(buffer + 4 * (i))) 52 #define blk(i) (block[i] = rol(block[i-3] ^ block[i-8] ^ block[i-14] ^ block[i-16], 1)) 54 #define R0(v,w,x,y,z,i) z += ((w&(x^y))^y) + blk0(i) + 0x5A827999 + rol(v, 5); w = rol(w, 30); 55 #define R1(v,w,x,y,z,i) z += ((w&(x^y))^y) + blk (i) + 0x5A827999 + rol(v, 5); w = rol(w, 30); 56 #define R2(v,w,x,y,z,i) z += ( w^x ^y) + blk (i) + 0x6ED9EBA1 + rol(v, 5); w = rol(w, 30); 57 #define R3(v,w,x,y,z,i) z += (((w|x)&y)|(w&x)) + blk (i) + 0x8F1BBCDC + rol(v, 5); w = rol(w, 30); 58 #define R4(v,w,x,y,z,i) z += ( w^x ^y) + blk (i) + 0xCA62C1D6 + rol(v, 5); w = rol(w, 30); 65 unsigned int i,
a,
b, c, d, e;
73 for (i = 0; i < 80; i++) {
78 t =
rol(block[i-3] ^ block[i-8] ^ block[i-14] ^ block[i-16], 1);
83 t += ((b&(c^d))^d) + 0x5A827999;
85 t += ( b^c ^d) + 0x6ED9EBA1;
88 t += (((b|c)&d)|(b&c)) + 0x8F1BBCDC;
90 t += ( b^c ^d) + 0xCA62C1D6;
99 for (i = 0; i < 15; i += 5) {
100 R0(a, b, c, d, e, 0 + i);
101 R0(e, a, b, c, d, 1 + i);
102 R0(d, e, a, b, c, 2 + i);
103 R0(c, d, e, a, b, 3 + i);
104 R0(b, c, d, e, a, 4 + i);
106 R0(a, b, c, d, e, 15);
107 R1(e, a, b, c, d, 16);
108 R1(d, e, a, b, c, 17);
109 R1(c, d, e, a, b, 18);
110 R1(b, c, d, e, a, 19);
111 for (i = 20; i < 40; i += 5) {
112 R2(a, b, c, d, e, 0 + i);
113 R2(e, a, b, c, d, 1 + i);
114 R2(d, e, a, b, c, 2 + i);
115 R2(c, d, e, a, b, 3 + i);
116 R2(b, c, d, e, a, 4 + i);
118 for (; i < 60; i += 5) {
119 R3(a, b, c, d, e, 0 + i);
120 R3(e, a, b, c, d, 1 + i);
121 R3(d, e, a, b, c, 2 + i);
122 R3(c, d, e, a, b, 3 + i);
123 R3(b, c, d, e, a, 4 + i);
125 for (; i < 80; i += 5) {
126 R4(a, b, c, d, e, 0 + i);
127 R4(e, a, b, c, d, 1 + i);
128 R4(d, e, a, b, c, 2 + i);
129 R4(c, d, e, a, b, 3 + i);
130 R4(b, c, d, e, a, 4 + i);
140 static const uint32_t
K256[64] = {
141 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
142 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
143 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
144 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
145 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
146 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
147 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
148 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
149 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
150 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
151 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
152 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
153 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
154 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
155 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
156 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
160 #define Ch(x,y,z) (((x) & ((y) ^ (z))) ^ (z)) 161 #define Maj(x,y,z) ((((x) | (y)) & (z)) | ((x) & (y))) 163 #define Sigma0_256(x) (rol((x), 30) ^ rol((x), 19) ^ rol((x), 10)) 164 #define Sigma1_256(x) (rol((x), 26) ^ rol((x), 21) ^ rol((x), 7)) 165 #define sigma0_256(x) (rol((x), 25) ^ rol((x), 14) ^ ((x) >> 3)) 166 #define sigma1_256(x) (rol((x), 15) ^ rol((x), 13) ^ ((x) >> 10)) 169 #define blk(i) (block[i] = block[i - 16] + sigma0_256(block[i - 15]) + \ 170 sigma1_256(block[i - 2]) + block[i - 7]) 172 #define ROUND256(a,b,c,d,e,f,g,h) \ 173 T1 += (h) + Sigma1_256(e) + Ch((e), (f), (g)) + K256[i]; \ 175 (h) = T1 + Sigma0_256(a) + Maj((a), (b), (c)); \ 178 #define ROUND256_0_TO_15(a,b,c,d,e,f,g,h) \ 180 ROUND256(a,b,c,d,e,f,g,h) 182 #define ROUND256_16_TO_63(a,b,c,d,e,f,g,h) \ 184 ROUND256(a,b,c,d,e,f,g,h) 188 unsigned int i,
a,
b, c, d, e, f,
g, h;
201 for (i = 0; i < 64; i++) {
219 for (i = 0; i < 16;) {
257 ctx->
state[0] = 0x67452301;
258 ctx->
state[1] = 0xEFCDAB89;
259 ctx->
state[2] = 0x98BADCFE;
260 ctx->
state[3] = 0x10325476;
261 ctx->
state[4] = 0xC3D2E1F0;
265 ctx->
state[0] = 0xC1059ED8;
266 ctx->
state[1] = 0x367CD507;
267 ctx->
state[2] = 0x3070DD17;
268 ctx->
state[3] = 0xF70E5939;
269 ctx->
state[4] = 0xFFC00B31;
270 ctx->
state[5] = 0x68581511;
271 ctx->
state[6] = 0x64F98FA7;
272 ctx->
state[7] = 0xBEFA4FA4;
276 ctx->
state[0] = 0x6A09E667;
277 ctx->
state[1] = 0xBB67AE85;
278 ctx->
state[2] = 0x3C6EF372;
279 ctx->
state[3] = 0xA54FF53A;
280 ctx->
state[4] = 0x510E527F;
281 ctx->
state[5] = 0x9B05688C;
282 ctx->
state[6] = 0x1F83D9AB;
283 ctx->
state[7] = 0x5BE0CD19;
300 for (i = 0; i <
len; i++) {
301 ctx->
buffer[j++] = data[i];
308 if ((j + len) > 63) {
309 memcpy(&ctx->
buffer[j], data, (i = 64 - j));
311 for (; i + 63 <
len; i += 64)
316 memcpy(&ctx->
buffer[j], &data[i], len - i);
326 while ((ctx->
count & 63) != 56)
void av_sha_final(AVSHA *ctx, uint8_t *digest)
Finish hashing and output digest value.
void av_sha_update(AVSHA *ctx, const uint8_t *data, unsigned int len)
Update hash value.
av_cold int av_sha_init(AVSHA *ctx, int bits)
Initialize SHA-1 or SHA-2 hashing.
memory handling functions
Macro definitions for various function/variable attributes.
void(* transform)(uint32_t *state, const uint8_t buffer[64])
function used to update hash for 512-bit input block
#define R4(v, w, x, y, z, i)
#define R3(v, w, x, y, z, i)
uint8_t buffer[64]
512-bit buffer of input values used in hash updating
#define R0(v, w, x, y, z, i)
#define ROUND256_0_TO_15(a, b, c, d, e, f, g, h)
#define R1(v, w, x, y, z, i)
uint64_t count
number of bytes in buffer
static void sha256_transform(uint32_t *state, const uint8_t buffer[64])
uint32_t state[8]
current hash value
static void(WINAPI *cond_broadcast)(pthread_cond_t *cond)
struct AVSHA * av_sha_alloc(void)
Allocate an AVSHA context.
uint8_t digest_len
digest length in 32-bit words
static const uint32_t K256[64]
#define ROUND256_16_TO_63(a, b, c, d, e, f, g, h)
#define R2(v, w, x, y, z, i)
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
static void sha1_transform(uint32_t state[5], const uint8_t buffer[64])