6.2 Explain cryptography algorithms and their basic characteristics. Flashcards
1 symmetric encryption in the world
AES - by default is 128-bit.
DES
56-bit Key symmetric encryption
3DES
168-bit key symmetric encryption
worlds only streaming cipher
RC4
Blowfish
64-bit symmetric encryption
Twofish
128-bit symmetric encryption
OTP (One-Time-Pad)
considered unbreakable
use a key that is as long as a plain-text message
Keys are used only once and then discarded
1 Asymmetric encryption in the world
RSA (Rivest Shamir Adelman)
DSA (Digital Signature Algorithm)
**Can be used only for signing data and it cannot be used for encryption.
Asymmetric encryption
United States Federal Government standard for digital signatures.
Diffie-Hellman
Used for exchanging encryption keys over an untrusted network.
Asymmetric encryption
El Gamal
Asymmetric encryption
Derived from Diffie-Hellman
Elliptic curve cryptography (ECC)
Used for cell phones
Asymmetric encryption
Pretty Good Privacy (PGP) / Gnu Privacy Guard (GPG)
Asymmetric/Symmetric HYBRID encryption
Widely used for email encryption
Secure Socket Layer (SSL)
Primarily used for secure online transactions such as online shopping or banking.
– HTTPS
– FTPS
weaker than TLS
How many Asymmetric encryption standards are there for the test?
5
- Diffie-Hellman
- ElGamal
- DSA
- RSA
- ECC