VARIABLE-LENGTH BLOCK CIPHER APPARATUS AND METHOD CAPABLE OF FORMAT PRESERVING ENCRYPTION
    1.
    发明申请
    VARIABLE-LENGTH BLOCK CIPHER APPARATUS AND METHOD CAPABLE OF FORMAT PRESERVING ENCRYPTION 审中-公开
    可变长度块碳水化合物装置和可用于保存加密的方法

    公开(公告)号:US20150244518A1

    公开(公告)日:2015-08-27

    申请号:US14561652

    申请日:2014-12-05

    CPC classification number: H04L9/0631 G09C1/00 H04L2209/24

    Abstract: A variable-length block cipher apparatus and method capable of format preserving encryption are provided. An encryption device for a variable-length block cipher apparatus includes an encryption key generation unit configured to generate encryption round keys eRK0, eRK1, . . . , eRKNr using a secret key and the number of rounds Nr, and a ciphertext output unit configured to output ciphertext having a length identical to that of plaintext using the plaintext and the encryption round keys. 7. A decryption device for a variable-length block cipher apparatus includes a decryption key generation unit configured to generate decryption round keys dRK0, dRK1, . . . , dRKNr using a secret key and a number of rounds Nr, and a plaintext restoration unit configured to restore ciphertext into plaintext having a length identical to that of the ciphertext using the ciphertext and the decryption round keys.

    Abstract translation: 提供了一种能够格式化保存加密的可变长度块密码装置和方法。 一种用于可变长度块密码装置的加密装置包括:加密密钥生成单元,被配置为生成加密循环密钥eRK0,eRK1。 。 。 使用秘密密钥的eRKNr和轮数Nr,以及密文输出单元,其配置为使用明文和加密循环密钥输出具有与明文长度相同长度的密文。 7.一种用于可变长度分组密码装置的解密装置,包括:解密密钥生成部,生成解密循环密钥dRK0,dRK1, 。 。 使用秘密密钥和多次Nr的dRKNr,以及明文恢复单元,其被配置为使用密文和解密循环密钥将密文恢复为与密文的长度相同的明文。

Patent Agency Ranking