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Home » Unlabelled » What is cryptography

What is cryptography

Cryptography derived its name from a Greek word called “Kryptos” which means “Hidden Secrets” .Cryptography is the practice and study of hiding information. It is the Art or Science of converting a plain intelligible data into an unintelligible data and again retransforming that message into its original form. It provides Confidentiality , Integrity,
Accuracy .


Encryption

The process of converting plain text into an unintelligible format (cipher text) is called Encryption.


Decryption

The process of converting cipher text into a plain text is called Decryption.


What is a Key

In cryptography, a key is a variable value that is applied using an algorithm to a string or block of unencrypted text to produce encrypted text, or to decrypt encrypted text. The length of the key is a factor in considering how difficult it will be to decrypt the text in a given message.


What is a Block Cipher?

A method of encrypting

/ decrypting data

Key is used for encryption /decryption.

Same size of I/P and O/P

What is Initialization Vector?

An initialization vector (IV) is an arbitrary number that can be used along with a secret key for data encryption. It is a group of hex values.


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