- c = buf[0]; buf[0] = buf[7]; buf[7] = c;
- c = buf[1]; buf[1] = buf[6]; buf[6] = c;
- c = buf[2]; buf[2] = buf[5]; buf[5] = c;
- c = buf[3]; buf[3] = buf[4]; buf[4] = c;
+ c = p[0]; p[0] = p[7]; p[7] = c;
+ c = p[1]; p[1] = p[6]; p[6] = c;
+ c = p[2]; p[2] = p[5]; p[5] = c;
+ c = p[3]; p[3] = p[4]; p[4] = c;