59 static const uint32_t
T[64] = {
60 0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
61 0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
62 0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
63 0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
65 0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
66 0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8,
67 0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
68 0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
70 0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
71 0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
72 0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05,
73 0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
75 0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
76 0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
77 0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
78 0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391,
81 #define CORE(i, a, b, c, d) do { \
82 t = S[i >> 4][i & 3]; \
86 if (i < 16) a += (d ^ (b & (c ^ d))) + X[ i & 15]; \
87 else a += ((d & b) | (~d & c)) + X[(1 + 5*i) & 15]; \
89 if (i < 48) a += (b ^ c ^ d) + X[(5 + 3*i) & 15]; \
90 else a += (c ^ (b | ~d)) + X[( 7*i) & 15]; \
92 a = b + (a << t | a >> (32 - t)); \
95 static void body(uint32_t
ABCD[4], uint32_t *
src,
int nblocks)
99 uint32_t
a,
b,
c, d,
t, *X;
101 for (n = 0; n < nblocks; n++) {
110 for (i = 0; i < 16; i++)
115 for (i = 0; i < 64; i++) {
125 CORE( i, a,b,c,d); CORE((i+1),d,a,b,c); \
126 CORE((i+2),c,d,a,b); CORE((i+3),b,c,d,a)
127 #define CORE4(i) CORE2(i); CORE2((i+4)); CORE2((i+8)); CORE2((i+12))
142 ctx->
ABCD[0] = 0x10325476;
143 ctx->
ABCD[1] = 0x98badcfe;
144 ctx->
ABCD[2] = 0xefcdab89;
145 ctx->
ABCD[3] = 0x67452301;
157 int cnt =
FFMIN(len, 64 - j);
158 memcpy(ctx->
block + j, src, cnt);
166 end = src + (len & ~63);
167 if (HAVE_BIGENDIAN || (!HAVE_FAST_UNALIGNED && ((intptr_t)src & 3))) {
169 memcpy(ctx->
block, src, 64);
174 int nblocks = len / 64;
175 body(ctx->
ABCD, (uint32_t *)src, nblocks);
180 memcpy(ctx->
block, src, len);
189 while ((ctx->
len & 63) != 56)
194 for (i = 0; i < 4; i++)
210 static void print_md5(
uint8_t *md5)
213 for (i = 0; i < 16; i++)
214 printf(
"%02x", md5[i]);
223 for (i = 0; i < 1000; i++)
225 av_md5_sum(md5val, in, 1000); print_md5(md5val);
226 av_md5_sum(md5val, in, 63); print_md5(md5val);
227 av_md5_sum(md5val, in, 64); print_md5(md5val);
228 av_md5_sum(md5val, in, 65); print_md5(md5val);
229 for (i = 0; i < 1000; i++)
231 av_md5_sum(md5val, in, 999); print_md5(md5val);