Performance and Efficiency Analysis of Different Block Cipher Algorithms of Symmetric Key Cryptography

In the era of information technology, security is essential to transmit confidential information (like credit card details, banking transactions etc) over the unsecured network like internet. It is possibility that the information that is being transferred through network of computers or internet being read by other people. For this we need an efficient and secure way to protect our data. Cryptographic algorithms play a vital role in providing data security. Cryptography algorithms are divided into Symmetric and Asymmetric key cryptography. Symmetric Cryptography is further divided into Block Ciphers and Stream ciphers. This paper discusses Performance and Efficiency Analysis of different block cipher algorithms (DES, 3DES, CAST-128, BLOWFISH, IDEA & RC2) of Symmetric Key Cryptography. Block cipher algorithms has been compared based on the following factors: input size of data (in the form of text, audio and video), encryption time, decryption time, throughput of encryption and decryption of each block ciphers and power consumption. If throughput value of a block cipher is increased then power consumption value of that cipher is decreased and vice versa. From Experimental results, we analysed performance and efficiency of these block cipher algorithms (DES, 3DES, CAST-128, BLOWFISH, IDEA & RC2). Keywords— Cryptography, Algorithms, Block, Stream ,Ciphers, Symmetric, Asymmetric, DES, 3DES, CAST-128, BLOWFISH, IDEA, RC2