Quiz 2 Study Guide - devinziegler/Devin-Tech-Journal GitHub Wiki
Cryptography terms
SEC 260 Crypto HTTPS intro
- Plaintext: Original & readable text
- Ciphertext: Disguised & scrambled text
- Encrypt: The process of disguising
- Cipher: Method which disguises text
- Decrypt: Removes disguise
Symmetric Encryption
SEC 260 Crypto HTTPS intro
- Symmetric encryption uses one secret key that must be stored on both systems
- It is fast and simple and requires less computing power
- Exchanging the keys is a challenge
Asymmetric Encryption
SEC 260 Crypto HTTPS intro
- Uses two keys "Key Pair"
- Public key and private key
- Messages encrypted with the public key can only be decrypted with the associated private key & vice versa
- Do not have to exchange private key
- Slower
- Requires more processing
Hash Functions
SEC 260 DigSig
- Algorithm that computes a fixed bit length string from a block of data
- Message is the Data
- Message Digest is the fixed bit string or hash
- Popular lengths are MD5 SHA-1 SHA-2
- Hashes can verify data integrity
Digital Certs
SEC 260 DigSig
- Non-Repudiation