Simple Cryptography

Created by
Monday, August 22, 2016

Cryptography is an art and science of secret communications. Cryptography is a way of doing things used to provide security by encrypting messages to make them non-readable.

Cryptography is used to hide the meaning of information in any form. Cryptography can be applied to anything that can be applied to anything thatcan be digitally coded such as:

  • Text
  • Images
  • Audio
  • Video


The unreadable form of the message or text is known as calculates/codes text.

 

Keys in cryptography:

  1. Public key
  2. Private key

Public key: Public keys are those keys that are made available to anyone who needs it and is used to encrypt the data.

Private key: A Private key is safe and is not available to anyone except the creator and is used to decrypt data encrypted by the public key.

Symmetric key cryptography: In symmetric key cryptography the same key is used for both encryption and decryption.

Asymmetric key cryptography: In asymmetric key cryptography a different key is used for encryption and decryption.

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