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KEY SCHEDULE APPARATUS FOR GENERATING AN ENCRYPTION ROUND KEY AND A DECRYPTION ROUND KEY SELECTIVELY CORRESPONDING TO INITIAL ROUND KEY HAVING VARIABLE KEY LENGTH
KEY SCHEDULE APPARATUS FOR GENERATING AN ENCRYPTION ROUND KEY AND A DECRYPTION ROUND KEY SELECTIVELY CORRESPONDING TO INITIAL ROUND KEY HAVING VARIABLE KEY LENGTH
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机译:选择性地生成具有可变密钥长度的初始密钥的加密时间表密钥和解密密钥的密钥时间表设备
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摘要
A key scheduler, which may selectively generate an encryption round key and a decryption round key corresponding to an initial round key, which may have a variable key length. The key scheduler may include a key storage unit, a key calculating unit, and a key output unit. The key storage unit may receive and store calculation key data items or storage key data items as input key data items, and may output the stored input key data items as the storage key data items. The key calculating unit may output the calculation key data items as the calculation result. The key output unit may select units of the input key data items and the storage key data items in response to output control signals, and may output them as an encryption round key or a decryption round key.
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