The purpose of this document is to provide technical information about implementations that have been validated as conforming to the Triple Data Encryption Algorithm (TDEA, a.k.a. "Triple DES"), as specified in Federal Information Processing Standard Publication 46-3, Data Encryption Standard (DES). For the complete specification of Triple DES, the standard ANSI X9.52-1998, Triple Data Encryption Algorithm Modes of Operation, must be used in conjunction with FIPS 46-3.