Des ECB Algorithm

For example, there is a 21-bit byte array which is divided into three blocks. If there are not enough 8 bytes, add 0x00 and perform DES encryption on the three blocks:

The encrypted three pieces of data are the data encrypted by the ECB.

JavaCodeImplementation:

Public static byte [] des3encodeecb (byte [] key, byte [] data) throws exception {secretkey secret ey = new secretkeyspec (key, "desede"); cipher = cipher. getinstance ("desede/ECB/nopadding"); cipher. init (cipher. encrypt_mode, cipher ey); byte [] bout = cipher. dofinal (data); return bout;} public static byte [] des3decodeecb (byte [] key, byte [] data) throws exception {secretkey secret ey = new secretkeyspec (key, "desede"); cipher = cipher. getinstance ("desede/ECB/nopadding"); cipher. init (cipher. decrypt_mode, cipher ey); Return cipher. dofinal (data );}