Proprofs

Front 1

DES

Back 1

Symmetric Algorithm.
Insecure, unreliable.
Replaced by 3DES

Front 2

3DES

Back 2

outdated and slow.
Symmetric

Front 3

AES

Back 3

Symmetric
Very Strong

Front 4

IDEA

Back 4

Symmetric.
PGP uses to ensure email security.
operates using 64-bit blocks and a 128-bit key

Front 5

RC5

Back 5

fast, variable-length, variable block symmetric cipher.

Front 6

RC5

Back 6

RSA Security developed RC5

Front 7

Advantages of Symmetric

Back 7

Faster and easier to implement
Lower overhead on system resources

Front 8

advantages of Asymmetric

Back 8

Scalable and does not require much administration
Easier for users to use

Front 9

DES

Back 9

weak key length (56 bits)

Front 10

RSA

Back 10

asymmetric key
transport protocol that can be used to transmit private keys between hosts.

Front 11

Diffie-Hellman

Back 11

asymetric key.
exchange keys.
uses logarithms
vulnerable to man-in-the-middle

Front 12

El Gamal

Back 12

asymetric.
extension of Diffie-Hellman
includes encryption and digital signatures

Front 13

MD5

Back 13

most commonly used hash protocol.
128 bit digest.
very fast
open source

Front 14

SHA-1

Back 14

more secure hashing protocol.
pads a message

Front 15

Secure message format works by encrypting a message with the ---------- ensuring confidentiality but not integrity

Back 15

public key of the intended recipient,

Front 16

. Why is a hash more difficult to decipher than a standard encryption protocol?

Back 16

Because a hash is a one-way function, the only way to decipher it is to try a large number of hashes of cleartext until one matches the original hash

Front 17

S/MIME,

Back 17

, provides basic cryptographic services for email sent via the Internet. Most popular browsers and email clients support S/MIME, making it among the more popular cryptographic email security services available.

Front 18

MOSS

Back 18

a less-common, more extensive suite of security services for email.

Front 19

PEM

Back 19

provides 3DES encryption for email.

Front 20

PGP,

Back 20

open-source and extremely popular email security suite that uses IDEA to encrypt email and validate signatures.

Front 21

Open relays

Back 21

email servers that forward email without any kind of authentication.
A good email security setup always includes a non-open relay server (or authenticated relay server).

Front 22

SSL

Back 22

connection-oriented standard designed to allow for secure cryptographic communication between two hosts via the Internet. TLS is the newest version of SSL.

Front 23

S-HTTP

Back 23

connectionless standard that provides for symmetric encryption, message digests, and client-server authentication.

Front 24

screening router

Back 24

he router acts as the sole gateway and gatekeeper between the un-trusted, outside network (i.e. the Internet) and the trusted network (i.e. LAN).

Front 25

Active v. Passive IDS

Back 25

: An active IDS will attempt to thwart any kind of detected attacks without user intervention. A passive IDS simply monitors for malicious activity

Front 26

Network v. Host IDS:

Back 26

A network-based IDS is one that operates as its own node on a network, while host-based IDS systems require agents to be installed on every protected host.*