Function gensboxes

source/src/crypto.cpp:90–109

    }

    void gensboxes()
    {
        const char *str = "Tiger - A Fast New Hash Function, by Ross Anderson and Eli Biham";
        chunk state[3] = { 0x0123456789ABCDEFULL, 0xFEDCBA9876543210ULL, 0xF096A5B4C3B2E187ULL };

        loopi(1024) loop(col, 8) ((uchar *)&sboxes[i])[col] = i&0xFF;

        int abc = 2;
        loop(pass, 5) loopi(256) for(int sb = 0; sb < 1024; sb += 256)
        {
            abc++;
            if(abc >= 3) { abc = 0; compress((const chunk *)str, state); }
            loop(col, 8)
            {
                uchar val = ((uchar *)&sboxes[sb+i])[col];
                ((uchar *)&sboxes[sb+i])[col] = ((uchar *)&sboxes[sb + ((uchar *)&state[abc])[col]])[col];
                ((uchar *)&sboxes[sb + ((uchar *)&state[abc])[col]])[col] = val;
            }
        }
    }

    struct incremental_buffer { int len, total; union { uchar u[64]; chunk c[8]; }; incremental_buffer() { len = total = 0; } };