Multiple choice › Cryptography
Cryptography
1. Cryptography
In public-key (asymmetric) encryption, how is a message sent confidentially to Sam?
- Encrypt it with Sam's public key; only Sam's private key can decrypt it
- Encrypt it with Sam's private key so everyone can read it
- Encrypt and decrypt with the same shared secret key
- Hash it so that Sam can reverse the hash
Answer
A
Public key encrypts, private key decrypts (for confidentiality). Hashes are one way and cannot be reversed.