60 static const uint32_t
T[64] = {
61 0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
62 0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
63 0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
64 0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
66 0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
67 0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8,
68 0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
69 0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
71 0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
72 0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
73 0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05,
74 0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
76 0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
77 0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
78 0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
79 0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391,
82 #define CORE(i, a, b, c, d) \ 84 t = S[i >> 4][i & 3]; \ 89 a += (d ^ (b & (c ^ d))) + AV_RL32(X+( i & 15));\ 91 a += ((d & b) | (~d & c)) + AV_RL32(X+((1 + 5*i) & 15));\ 94 a += (b ^ c ^ d) + AV_RL32(X+((5 + 3*i) & 15));\ 96 a += (c ^ (b | ~d)) + AV_RL32(X+(( 7*i) & 15));\ 98 a = b + (a << t | a >> (32 - t)); \ 106 uint32_t
a,
b,
c, d, t;
108 for (n = 0; n < nblocks; n++) {
114 X = (
const uint32_t *)src + n * 16;
117 for (i = 0; i < 64; i++) {
127 CORE(i, a, b, c, d); CORE((i + 1), d, a, b, c); \ 128 CORE((i + 2), c, d, a, b); CORE((i + 3), b, c, d, a) 129 #define CORE4(i) CORE2(i); CORE2((i + 4)); CORE2((i + 8)); CORE2((i + 12)) 147 ctx->
ABCD[0] = 0x10325476;
148 ctx->
ABCD[1] = 0x98badcfe;
149 ctx->
ABCD[2] = 0xefcdab89;
150 ctx->
ABCD[3] = 0x67452301;
153 #if FF_API_CRYPTO_SIZE_T 166 int cnt =
FFMIN(len, 64 - j);
167 memcpy(ctx->
block + j, src, cnt);
175 end = src + (len & ~63);
178 memcpy(ctx->
block, src, 64);
183 int nblocks = len / 64;
189 memcpy(ctx->
block, src, len);
198 while ((ctx->
len & 63) != 56)
203 for (i = 0; i < 4; i++)
207 #if FF_API_CRYPTO_SIZE_T static const uint32_t T[64]
#define HAVE_FAST_UNALIGNED
static const uint8_t S[4][4]
Memory handling functions.
void av_md5_update(AVMD5 *ctx, const uint8_t *src, int len)
Update hash value.
struct AVMD5 * av_md5_alloc(void)
Allocate an AVMD5 context.
static av_cold int end(AVCodecContext *avctx)
void av_md5_sum(uint8_t *dst, const uint8_t *src, const int len)
Hash an array of data.
static void body(uint32_t ABCD[4], const uint8_t *src, int nblocks)
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
void av_md5_init(AVMD5 *ctx)
Initialize MD5 hashing.
#define CORE(i, a, b, c, d)
void av_md5_final(AVMD5 *ctx, uint8_t *dst)
Finish hashing and output digest value.
Public header for MD5 hash function implementation.