题目
英语翻译
All of the cryptograms mentioned above are dynamically generated by the chip card or the issuer using symmetric cryptography employing unique card-level keys derived from a master key located at the issuer.Traditionally,the symmetric cryptography method used is 2-key triple DES although use of AES (advanced encryption standard) is also permitted.
All of the cryptograms mentioned above are dynamically generated by the chip card or the issuer using symmetric cryptography employing unique card-level keys derived from a master key located at the issuer.Traditionally,the symmetric cryptography method used is 2-key triple DES although use of AES (advanced encryption standard) is also permitted.
提问时间：2021-05-04
答案
前面提到的所有密码都是由芯片动态生成,或发卡商使用对称加密算法,通过主玥生成唯一的卡级密钥.传统上,对称加密算法要使用双密码三重数据加密标准(DES),但也允许使用高级加密标准(AES).
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