Xtime calculator Two C files for dec or hex format input + output function xtime() based on AES - bit-shift to left if overflow occurs, bulhar's constant 1B is added via the XOR function Translation for Windows under MinGW: gcc dec.c -o dec.exe gcc hex.c -o hex.exe Translation for Linux under GCC: gcc dec.c -o dec gcc hex.c -o hex Optional translation: make or make all Usage or DEC: Enter numbers from range 0 - 255: Enter number 1: 10 (your number) Enter number 2: 20 (your number) Xtime result: 136 Usage or HEX: Enter numbers from range 00-FF: Enter number 1: 0xAA (your number) Enter number 2: 0xBB (your number) Xtime result: 0x56