Understanding PGP Services

What are the five services that PGP consists of?

• Authentication

• Confidentiality

• Compression

• E-mail compatibility

• Segmentation

What hash function is used for authentication in PGP?

• SHA-1

• MD5

• SHA-256

What encryption methods are used for confidentiality in PGP?

• CAST-128

• IDEA

• 3DES

• AES

What is the maximum length of a message in PGP?

• 50,000 octets

• 100,000 octets

• 200,000 octets

What types of keys does PGP make use of?

• One-time session symmetric keys

• Public keys

• Private keys

• Passphrase based symmetric keys

What fields are present in the private key ring?

• Key ID

• Timestamp

• Public key

• Encrypted private key

• User ID

Which algorithms are used for message encryption?

PGP compresses the message after applying the signature but before

encryption.

• True

• False

Number of PGP services

Data structure used to store the public/private key pairs owned by that node