508     uint_8t cc, rc, hi;  local
531     for( cc = keylen, rc = 1; cc < hi; cc += 4 )
534         t0 = ctx->ksch[cc - 4];
535         t1 = ctx->ksch[cc - 3];
536         t2 = ctx->ksch[cc - 2];
537         t3 = ctx->ksch[cc - 1];
538         if( cc % keylen == 0 )
547         else if( keylen > 24 && cc % keylen == 16 )
554         tt = cc - keylen;
555         ctx->ksch[cc + 0] = ctx->ksch[tt + 0] ^ t0;
556         ctx->ksch[cc + 1] = ctx->ksch[tt + 1] ^ t1;
557         ctx->ksch[cc + 2] = ctx->ksch[tt + 2] ^ t2;
558         ctx->ksch[cc + 3] = ctx->ksch[tt + 3] ^ t3;
673 {   uint_8t cc;  local
681     for(cc = 4; cc < 16; cc += 4 )
683         k[cc + 0] ^= k[cc - 4];
684         k[cc + 1] ^= k[cc - 3];
685         k[cc + 2] ^= k[cc - 2];
686         k[cc + 3] ^= k[cc - 1];
727 {   uint_8t cc;  local
729     for( cc = 12; cc > 0; cc -= 4 )
731         k[cc + 0] ^= k[cc - 4];
732         k[cc + 1] ^= k[cc - 3];
733         k[cc + 2] ^= k[cc - 2];
734         k[cc + 3] ^= k[cc - 1];
780 {   uint_8t cc;  local
788     for(cc = 4; cc < 16; cc += 4)
790         k[cc + 0] ^= k[cc - 4];
791         k[cc + 1] ^= k[cc - 3];
792         k[cc + 2] ^= k[cc - 2];
793         k[cc + 3] ^= k[cc - 1];
801     for( cc = 20; cc < 32; cc += 4 )
803         k[cc + 0] ^= k[cc - 4];
804         k[cc + 1] ^= k[cc - 3];
805         k[cc + 2] ^= k[cc - 2];
806         k[cc + 3] ^= k[cc - 1];
860 {   uint_8t cc;  local
862     for(cc = 28; cc > 16; cc -= 4)
864         k[cc + 0] ^= k[cc - 4];
865         k[cc + 1] ^= k[cc - 3];
866         k[cc + 2] ^= k[cc - 2];
867         k[cc + 3] ^= k[cc - 1];
875     for(cc = 12; cc > 0; cc -= 4)
877         k[cc + 0] ^= k[cc - 4];
878         k[cc + 1] ^= k[cc - 3];
879         k[cc + 2] ^= k[cc - 2];
880         k[cc + 3] ^= k[cc - 1];