Dr. S.A.M Rizvi , Department of Computer Science, Jamia Millia Islamia,New Delhi
Neeta Wadhwa, Department of Computer Science, Jamia Millia Islamia,New Delhi
Abstract— Cryptography is one of the technological means to provide security to data being transmitted on information and communications systems. Cryptography is especially useful in the cases of financial and personal data, irrespective of the fact that the data is being transmitted over a medium or is stored on a storage device. Cryptanalysis is the science of recovering the plaintext of a message without access to the key.The present paper discusses some of the basic considerations about symmetric and asymmetric encryption. This paper compares the functionality, benefits and suitability of symmetric and asymmetric encryption methodology. It also discusses how to study and analyze the security of different algorithms from cryptanalyst point of view.
Keywords- Symmetric Encryption, Asymmetric Encryption, Cryptanalysis.
Cryptography is the art and science of secret writing. The term is derived from the Greek words: ‘kryptos’ means “ hidden” and ‘ logos’ means “ word “.
Encryption is the actual process of applying cryptography. Much of cryptography is math oriented and uses patterns and algorithms to encrypt messages, text, words, signals and other forms of communication. It enables us to store sensitive information or transmit it across insecure networks (like the Internet) so that it cannot be read by anyone except the intended recipient. The emphasis of cryptography is on data confidentiality, data integrity, sender authentication, and non-repudiation of origin/data accountability.
II.Symmetric vs Asymmetric Encryption
Both the symmetric and asymmetric encryption are being used as a complimentary to each other in the world of cryptography. They are... [continues]
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