Security+Cert: Cryptography Flashcards
What cipher has up to 448 bit key?
Blowfish
True/False.RC4 is a stream cipher that can be configured to be less secure.
true
what encryption method is old and only provides 56 bits of authentication?
DES
What encryption method is the most resistant to brute force attacks?
AES256
Level 3 extended validation certificates are good for how long?
Two years
A has that provides irrefutable proof does what?
Non-Repudiation
What hash is the most collision resistant?
SHA1
SHA1 has how many bits compared to MD5?
SHA1 has 160bits while MD5 has 128 bits
What encryption method has a key distribution problem?
Symmetric Encryption
GCM is an operation for symmetric block ciphers like AES that provides what?
Authentication and Integrity
GPG, PGP, and S/MIME are used for what?
Email security
Wildcard SSL does what?
Secures all servers and subdomains on a given domain
The relationship that exists between CA’s when there is a common extranet is what?
Peer to Peer trust
What encryption method is the most secure?
Asymetric
Name the 4 S’s of symmetric encryption.
Single, Secret, Session, Same
