Function MD5Update

src/dolphin/src/eth/md5.c:109–141

MD5 block update operation. Continues an MD5 message-digest operation, processing another message block, and updating the context. */

  context.
 */
void MD5Update(MD5_CTX *context, u8 *input, u32 inputLen)
/* context:  context */
/* input:    input block */
/* inputlen: length of input block */
{
  u32 i, index, partLen;

  /* Compute number of bytes mod 64 */
  index = (u32)((context->count[0] >> 3) & 0x3F);

  /* Update number of bits */
  if ((context->count[0] += ((u32)inputLen << 3)) < ((u32)inputLen << 3))
    context->count[1]++;
  context->count[1] += ((u32)inputLen >> 29);
  partLen = 64 - index;

  /* Transform as many times as possible. */
  if (inputLen >= partLen) {
    memcpy(&context->buffer[index], input, partLen);
    MD5Transform(context->state, context->buffer);

    for (i = partLen; i + 63 < inputLen; i += 64) {
      MD5Transform (context->state, &input[i]);
    }

    index = 0;
  } else {
    i = 0;
  }

  /* Buffer remaining input */
  memcpy(&context->buffer[index], &input[i], inputLen - i);
}

/* MD5 finalization. Ends an MD5 message-digest operation, writing the
  the message digest and zeroizing the context.