#include void setup( void ) { Serial.begin(9600); Keeloq k(0x01020304,0x05060708); const unsigned long p = 6623281UL; const unsigned long enc = k.encrypt(p); const unsigned long dec = k.decrypt(enc); Serial.print("Plaintext : "); Serial.println(p,DEC); Serial.print("After encrypt: "); Serial.println(enc,HEX); Serial.print("After decrypt: "); Serial.println(dec,DEC); } void loop( void ) { delay(3000); }