With the increasing interconnection of computer networks and sophistication\nof cyber-attacks, Cryptography is one way to make sure that confidentiality,\nauthentication, integrity, availability, and identification of data user\ncan be maintained as well as security and privacy of data provided to the\nuser. Symmetric key cryptography is a part of the cryptographic technique\nwhich ensures high security and confidentiality of data transmitted through\nthe communication channel using a common key for both encryption and\ndecryption. In this paper I have analyzed comparative encryption algorithms\nin performance, three most useful algorithms: Data Encryption\nStandard (DES), Triple DES (3DES) also known as Triple Data Encryption\nAlgorithm (TDEA), and Advanced Encryption Standard (AES). They have\nbeen analyzed on their ability to secure data, time taken to encrypt data and\nthroughput the algorithm requires. The performance of different algorithms\ndiffers according to the inputs.
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