::: : :

400

( Key )

() ( Single-key ) DES ( Data Encryption Standard) AES ( Advanced Encryption Standard ) () ( Public Key) ( Private Key)

()/

DES32bitsLi32bitsRiRi48bitKiXOR32bitRiLiXORRi2~332bit64bit

()

(key owner)

()

DESFEAL IDEA SKIPJACK /

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