CRYPTOGRAPHY

 Abstract

I am very happy to present a paper titled ‘Cryptography- secure way of communication’. I had started with the introduction of Cryptography, in which starting from old age to modern age, how cryptography plays an important role in communication is briefly described. Cryptography is defined in detail. Then need of cryptography along with applications is described for latest technology. The basic terms for cryptography are defined.  I explained the basic types of cryptography i.e. based on keys. Then comes hashing functions, in which what is meant by hash value, how it is generated, what is its used in cryptography, are briefly described.
I had given more attention towards a very useful algorithm in cryptography, called as Data Encryption Standard. In this, I explained the algorithm, strength and application. A very useful application of cryptography- Digital Signature has explained with algorithm, applications.

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