VLSI Implementation of Data Encryption Standard Algorithm

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Provided by: International Journal of Science and Modern Engineering (IJISME)
Topic: Security
Format: PDF
There are two main types of cryptography in use today - symmetric secret key cryptography and a symmetric or public key cryptography. Symmetric key cryptography is the oldest type whereas asymmetric cryptography is only being used publicly since the late 1970's 1. Asymmetric cryptography was a major milestone in the search for a perfect encryption scheme. Secret key cryptography goes back to at least Egyptian times and is of concern here. It involves the use of only one key which is used for both encryption and decryption (hence the use of the term symmetric).
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