Implementation of Triple Data Encryption Standard Architecture

Cryptography plays very important role in security of data. Cryptography means to transfer sensitive information across insecure networks like internet so that it cannot be read by anyone except the person whom we want to send it. It basically hides the information. The federal organization used the Data Encryption Standard (DES) and the Triple Data Encryption Algorithm (TDEA), which may be used to protect sensitive data. Cryptography algorithms are divided into Symmetric and Asymmetric key cryptography. Symmetric Cryptography is further divided into Block ciphers and Stream Ciphers. This paper discusses Implementation of Triple Data Encryption Standard Architecture of different block cipher algorithms of Symmetric Key Cryptography. The algorithms uniquely define the mathematical steps required to transform data into a cryptographic cipher and also to transform the cipher back to the original form. The proposed architecture is modeled in the VHDL design language and simulation results with the help of Xilinx software tool.