Audiovox P965 Arkusz Danych Pobierz pdf (Strona 216)

API in C

213

pms->count[0] = pms->count[1] = 0;

pms->abcd[0] = 0x67452301;

pms->abcd[1] = /*0xefcdab89*/ T_MASK ^ 0x10325476;

pms->abcd[2] = /*0x98badcfe*/ T_MASK ^ 0x67452301;

pms->abcd[3] = 0x10325476;

}

void

md5_append(md5_state_t *pms, const md5_byte_t *data, int nbytes)

{

const md5_byte_t *p = data;

int left = nbytes;

int offset = (pms->count[0] >> 3) & 63;

md5_word_t nbits = (md5_word_t)(nbytes << 3);

if (nbytes <= 0)

return;

/* Update the message length. */

pms->count[1] += nbytes >> 29;

pms->count[0] += nbits;

if (pms->count[0] < nbits)

pms->count[1]++;

/* Process an initial partial block. */

if (offset) {

int copy = (offset + nbytes > 64 ? 64 - offset : nbytes);

memcpy(pms->buf + offset, p, copy);

if (offset + copy < 64)

return;

p += copy;

left -= copy;

md5_process(pms, pms->buf);

}

/* Process full blocks. */

for (; left >= 64; p += 64, left -= 64)

md5_process(pms, p);

/* Process a final partial block. */

if (left)

memcpy(pms->buf, p, left);

}

void

md5_finish(md5_state_t *pms, md5_byte_t digest[16])

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Audiovox P965 Arkusz Danych Strona 216