Method append

src/Crypt/md5.cpp:236–286

}

void MD5Crypt::append(md5_state *pms, const unsigned char *data, int nbytes)
{
    const unsigned char *p = data;
    unsigned int nbits = (unsigned int)(nbytes << 3);
    int left = nbytes, offset = (pms->count[0] >> 3) & 63;

    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 != 0)
    {
        int copy = (offset + nbytes > 64 ? 64 - offset : nbytes);
        memcpy(pms->buf + offset, p, copy);

        if (offset + copy < 64)
        {
            return;
        }

        p += copy;
        left -= copy;
        process(pms, pms->buf);
    }

    // Process full blocks
    for (; left >= 64; p += 64, left -= 64)
    {
        process(pms, p);
    }

    // Process a final partial block
    if (left != 0)
    {
        if (left > 63)
        {
            left = 63;
        }
        memcpy(pms->buf, p, left);
    }
}

void MD5Crypt::finish(md5_state *pms, unsigned char digest[16])
{