【摘要】 为使IC卡(IntegratedCircuitCard)在实际应用中更加安全、可靠,采用数据加密标准DES(DataEncryptionStandard)的改进算法3DES(TripleDES),结合HASH函数SHA-1(SecureHashAlgorithm-1),通过MicrosoftVisualBasic6.0可视化开发工具,实现了SLE4442型IC卡数据的完全加密和成功解密。使用的双密钥总长度是传统DES加密方法的2倍,有效弥补了DES算法密钥太短的不足,增强了抗"穷举"(bruteforce)能力,且生成和管理密钥的方法简单、安全,切实可行。更多还原

【Abstract】 To make IC(Integrated Circuit) cards more secure and reliable in practice, using Triple DES(Data Encryption Standard) algorithm (the improvement of Data Encryption Standard), Secure Hash Algorithm1, and Microsoft Visual Basic 60 visual development tools, the whole encryptions and successful decryptions for SLE4442 cards are realized. The length of two keys is doubled the old DES, which makes up the short key of DES. The method of creating and managing keys is easy and secure, whose realization is acceptable.更多还原