本标准规定了实施ANSI X9的方法。52、三重数据加密算法（TDEA）用于增强数字信息加密保护的操作模式。ANSI X9中定义的操作模式。52指定用于加密和解密操作。这些模式提供了扩展ANSI X3有效密钥空间的方法。92数据加密算法（DEA）。ANSI X9。52提供多种操作模式。本标准将帮助系统集成商为其组织选择和实施适当的模式。

This Standard specifies methodologies for the implementation of ANSI X9.52, Triple Data Encryption Algorithm (TDEA) Modes of Operations for the enhanced cryptographic protection of digital information. The modes of operation defined in ANSI X9.52 are specified for both enciphering and deciphering operations. These modes provide a means of extending the effective key space of the ANSI X3.92 Data Encryption Algorithm (DEA). ANSI X9.52 provides multiple modes of operation. This standard will assist system integrators to select and implement the appropriate mode for their organizations.