将byte []附加到另一个byte []的末尾

使用

System.arraycopy()

// create a destination array that is the size of the two arraysbyte[] destination = new byte[ciphertext.length + mac.length];// copy ciphertext into start of destination (from pos 0, copy ciphertext.length bytes)System.arraycopy(ciphertext, 0, destination, 0, ciphertext.length);// copy mac into end of destination (from pos ciphertext.length, copy mac.length bytes)System.arraycopy(mac, 0, destination, ciphertext.length, mac.length);