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Pamantayan ng Data Encryption

微软 Data Encryption Standard (An encryption algorithm that uses a 56-bit key and maps a 64-bit input block to a 64-bit output block. The key appears to be a 64-bit key, but one bit in each of the eight bytes is used for odd parity, resulting in 56 bits of usable key)
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Pamantayan ng Data Encryption
微软 DES