Encryption

• Use of mathematical code (cipher) to scramble data into a format that can be read only by reversing the cipher
• Keeps information private
• Benchmarks / CIA triad
  • Confidentiality
  • Integrity
  • Availability

Key Encryption

• Key
  • Randoms string of characters
  • Woven into original data's bits
  • Generates unique data block called ciphertext
  • Created according to specific algorithm

Private Key Encryption

• Data encrypted with a single key
  • Sender and receiver have the same key
• Symmetric encryption
  • Same key is used for encryption and decryption

Public Key Encryption

• Data encrypted with two keys
• Private key --> know by user
• Public key --> know by anyone
• Asymmetric encryption
  • Requires two different keys

Computer Science Security Cryptography