Write an abstract about data encryption standard

The Data Encryption standard is used to protect electronic data. DES algorithm uses symmetric block cipher for encrypting and decrypting data. Encryption converts data into gibberish language called cipher text. Decrypting the cipher text gives us back the original data that is plaintext. is also a symmetric-key block cipher published by the National Institute of Standards and Technology (NIST). 6.1.1 History In 1973, NIST published a request for proposals for a national symmetric-key cryptosystem. A proposal from IBM, a modifi cation of a project called Lucifer, was accepted as DES.

Explanation:

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what is inputmismatchexception?

the answer to your question would be something called hertz. the unit of measurement called a hertz, which is one cycle per second, is used to measure clock speed. within one cycle, your computer processes, refreshes, or updates itself to the changes that it is going through. in the case of computer clock speed, one hertz equals one tick per second. the clock speed of computers is usually measured in megahertz (mhz) or gigahertz (ghz)