• Encryption keys
• hashes
• Digital signuratures

Encryption Key

• Random strings of bits used to lock & unlock data
• Symmetric encryption: same key for encrypt and decrypt
• Asymmetric enryption: different key for encrypt and decrypt
  • Known as public and private keys

Hashes

• Deterministic
• Unable to decrypt

Salting

• Adding random number of characters to data before hashed

Steganography

• Hiding message within something else like an image

Encryption Key Methods

Symmetric Encryption

• same key to encrypt & decrypt
• Advanced Encryption standard (AES) is most widely used
• Has 3 key lengths

Asymmetric