Encryption best

Encryption best

1. Defintion

   • Conversion of data using an algorithm into cypher text that cannot be easily understood by someone without the decryption key

2. Asymmetric Cryptography

   • Uses two different but mathematically linked keys, one public and one private
   • The public key can be shared with everyone, whereas the private key must be kept secret
   • RSA is the most widely used asymmetric algorithm

3. Symmetric-key ciphers

   • Use the same key, or secret, for encrypting and decrypting a message or file
   • The most widely used symmetric-key cipher is AES
     • Was created to protect government classified information
   • Much faster than asymmetric encryption

4. Most cryptographic processes use a symmetric algorithm to efficiently encrypt data, but use an asymmetric algorithm to exchange the secret key

5. Examples

   • RC4
   • Des
   • Twofish
   • Blowfish
   • RC2