U5.7 Crypto Primitives

U5.7 Crypto Primitives

1. Symmetric Ciphers

   • Primary function of confidentiality
   • Provide data encryption
   • Fast cipher mechanisim
   • Rely on secure shared secret keys
     • Typically Diffe Hellman or RSA used

2. Asymmetric Ciphers

   • Used for digital signatures
   • Provide authentication
   • Used for key management and entity authentication setup

3. Keyed Hash functions

   • Hash functions used with a key
   • Stronger than a normal hash
   • Provide message integrity protection

4. Keyed pseduo-random functions

   • Produce random strings for key material