#include <string.h>#include "avutil.h"#include "bswap.h"#include "sha.h"#include "intreadwrite.h"Go to the source code of this file.
Data Structures | |
| struct | AVSHA |
| hash context More... | |
Defines | |
| #define | rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits)))) |
| #define | blk0(i) (block[i] = AV_RB32(buffer + 4 * (i))) |
| #define | blk(i) (block[i] = rol(block[i-3] ^ block[i-8] ^ block[i-14] ^ block[i-16], 1)) |
| #define | R0(v, w, x, y, z, i) z += ((w&(x^y))^y) + blk0(i) + 0x5A827999 + rol(v, 5); w = rol(w, 30); |
| #define | R1(v, w, x, y, z, i) z += ((w&(x^y))^y) + blk (i) + 0x5A827999 + rol(v, 5); w = rol(w, 30); |
| #define | R2(v, w, x, y, z, i) z += ( w^x ^y) + blk (i) + 0x6ED9EBA1 + rol(v, 5); w = rol(w, 30); |
| #define | R3(v, w, x, y, z, i) z += (((w|x)&y)|(w&x)) + blk (i) + 0x8F1BBCDC + rol(v, 5); w = rol(w, 30); |
| #define | R4(v, w, x, y, z, i) z += ( w^x ^y) + blk (i) + 0xCA62C1D6 + rol(v, 5); w = rol(w, 30); |
| #define | Ch(x, y, z) (((x) & ((y) ^ (z))) ^ (z)) |
| #define | Maj(x, y, z) ((((x) | (y)) & (z)) | ((x) & (y))) |
| #define | Sigma0_256(x) (rol((x), 30) ^ rol((x), 19) ^ rol((x), 10)) |
| #define | Sigma1_256(x) (rol((x), 26) ^ rol((x), 21) ^ rol((x), 7)) |
| #define | sigma0_256(x) (rol((x), 25) ^ rol((x), 14) ^ ((x) >> 3)) |
| #define | sigma1_256(x) (rol((x), 15) ^ rol((x), 13) ^ ((x) >> 10)) |
| #define | blk(i) |
| #define | ROUND256(a, b, c, d, e, f, g, h) |
| #define | ROUND256_0_TO_15(a, b, c, d, e, f, g, h) |
| #define | ROUND256_16_TO_63(a, b, c, d, e, f, g, h) |
Functions | |
| static void | sha1_transform (uint32_t state[5], const uint8_t buffer[64]) |
| static void | sha256_transform (uint32_t *state, const uint8_t buffer[64]) |
| int | av_sha_init (AVSHA *ctx, int bits) |
| Initialize SHA-1 or SHA-2 hashing. | |
| void | av_sha_update (AVSHA *ctx, const uint8_t *data, unsigned int len) |
| Update hash value. | |
| void | av_sha_final (AVSHA *ctx, uint8_t *digest) |
| Finish hashing and output digest value. | |
Variables | |
| const int | av_sha_size = sizeof(AVSHA) |
| static const uint32_t | K256 [64] |
| #define blk | ( | i | ) |
Value:
(block[i] = block[i - 16] + sigma0_256(block[i - 15]) + \ sigma1_256(block[i - 2]) + block[i - 7])
Definition at line 163 of file sha.c.
Referenced by ac3_compute_mantissa_size_c(), ac3_decode_frame(), ac3_exponent_min_c(), allocate_buffers(), apply_channel_coupling(), apply_mdct(), bink_decode_plane(), binkb_decode_plane(), bit_alloc(), bit_alloc_masking(), compute_exp_strategy(), compute_rematrixing_strategy(), count_exponent_bits(), count_frame_bits(), count_frame_bits_fixed(), count_mantissa_bits_init(), count_mantissa_bits_update_ch(), decode_frame(), dv_calc_mb_coordinates(), dv_init_enc_block(), encode_exponents(), ff_ac3_apply_rematrixing(), ff_ac3_compute_coupling_strategy(), ff_ac3_encode_close(), ff_ac3_group_exponents(), ff_ac3_output_frame(), ff_ac3_quantize_mantissas(), ff_eac3_decode_transform_coeffs_aht_ch(), ff_eac3_output_frame_header(), ff_eac3_parse_header(), ff_eac3_set_cpl_states(), ff_ivi_decode_blocks(), ff_ivi_process_empty_tile(), reset_block_bap(), scale_coefficients(), set_bandwidth(), sha256_transform(), and vb_decode_framedata().
| #define Ch | ( | x, | |||
| y, | |||||
| z | ) | (((x) & ((y) ^ (z))) ^ (z)) |
| #define Maj | ( | x, | |||
| y, | |||||
| z | ) | ((((x) | (y)) & (z)) | ((x) & (y))) |
| #define R0 | ( | v, | |||
| w, | |||||
| x, | |||||
| y, | |||||
| z, | |||||
| i | ) | z += ((w&(x^y))^y) + blk0(i) + 0x5A827999 + rol(v, 5); w = rol(w, 30); |
Definition at line 48 of file sha.c.
Referenced by altivec_uyvy_rgb32(), ff_yuv2packedX_altivec(), and sha1_transform().
| #define R1 | ( | v, | |||
| w, | |||||
| x, | |||||
| y, | |||||
| z, | |||||
| i | ) | z += ((w&(x^y))^y) + blk (i) + 0x5A827999 + rol(v, 5); w = rol(w, 30); |
| #define R2 | ( | v, | |||
| w, | |||||
| x, | |||||
| y, | |||||
| z, | |||||
| i | ) | z += ( w^x ^y) + blk (i) + 0x6ED9EBA1 + rol(v, 5); w = rol(w, 30); |
| #define R3 | ( | v, | |||
| w, | |||||
| x, | |||||
| y, | |||||
| z, | |||||
| i | ) | z += (((w|x)&y)|(w&x)) + blk (i) + 0x8F1BBCDC + rol(v, 5); w = rol(w, 30); |
| #define R4 | ( | v, | |||
| w, | |||||
| x, | |||||
| y, | |||||
| z, | |||||
| i | ) | z += ( w^x ^y) + blk (i) + 0xCA62C1D6 + rol(v, 5); w = rol(w, 30); |
Value:
T1 += (h) + Sigma1_256(e) + Ch((e), (f), (g)) + K256[i]; \ (d) += T1; \ (h) = T1 + Sigma0_256(a) + Maj((a), (b), (c)); \ i++
| #define sigma0_256 | ( | x | ) | (rol((x), 25) ^ rol((x), 14) ^ ((x) >> 3)) |
| #define Sigma0_256 | ( | x | ) | (rol((x), 30) ^ rol((x), 19) ^ rol((x), 10)) |
| #define sigma1_256 | ( | x | ) | (rol((x), 15) ^ rol((x), 13) ^ ((x) >> 10)) |
| #define Sigma1_256 | ( | x | ) | (rol((x), 26) ^ rol((x), 21) ^ rol((x), 7)) |
| static void sha1_transform | ( | uint32_t | state[5], | |
| const uint8_t | buffer[64] | |||
| ) | [static] |
| static void sha256_transform | ( | uint32_t * | state, | |
| const uint8_t | buffer[64] | |||
| ) | [static] |
const uint32_t K256[64] [static] |
Initial value:
{
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
}
Definition at line 134 of file sha.c.
Referenced by sha256_transform().
1.5.8