/* MD5 block update operation. Continues an MD5 message-digest
operation, processing another message block, and updating the
context.*/
VOID MD5_Update (MD5_CTX * context, BYTE * input, UINT inputLen)
{
UINT i, index, partLen;
// Compute number of bytes (that we already had) mod 64
index = (UINT)((context->count[0] >> 3) & 0x3F);
// Update number of bits
if ((context->count[0] += ((DWORD)inputLen << 3)) < ((DWORD)inputLen << 3))
context->count[1]++;
context->count[1] += ((DWORD)inputLen >> 29);
// partLen is the number of bytes we need to fill the buffer. It is possible that
// there are bytes left to process
partLen = 64 - index;
// Transform as many times as possible
if (inputLen >= partLen) {
MD5_memcpy((BYTE *)&context->buffer[index], (BYTE *)input, partLen);
MD5_Transform (context->state, context->buffer);
for (i = partLen; i + 63 < inputLen; i += 64)
MD5_Transform (context->state, &input[i]);
index = 0;
}
else
i = 0;
// Buffer remaining input that we could not process
MD5_memcpy((BYTE *)&context->buffer[index], (BYTE *)&input[i], inputLen-i);
}
static int partial_hash_md5(uint8_t *data_in, uint8_t *data_out)
{
MD5_CTX ctx;
if (!MD5_Init(&ctx))
return -EFAULT;
MD5_Transform(&ctx, data_in);
rte_memcpy(data_out, &ctx, MD5_DIGEST_LENGTH);
return 0;
}
