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Cryptography

Cryptography - the art and science of encrypting sensitive information, was once exclusive to the realms of government, academia, and the military.

Requires encryption and decryption

Polymorphism is basically a cipher that changes itself with each use.

Types of cryptography

  1. Hashing - type of cryptography that changes a message into an unreadable string of text for the purpose of verifying the message’s contents, not hiding the message itself.
  2. Symmetric Cryptography - uses a single key to encrypt a message and then decrypt that message upon delivery.
  3. Asymmetric Cryptography - uses two different keys for encryption and decryption, as opposed to the single key used in symmetric cryptography.
  4. Key Exchange Algorithms - is used to safely exchange encryption keys with an unknown party.

The 4 Types of Cryptographic Functions

  1. Authentication
  2. Nonrepudiation
  3. Confidentiality
  4. Integrity

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