Information Security: Principles and Practices 2nd Edition by Jim Breithaupt, Mark S. Merkow

Exercise 26

Which of the following algorithms is used today for encryption in PGP?

A. RSA

B. IDEA

C. Blowfish

D. RC5

Step 1 of 2

Mail Standard that rely on ‘Web of Trust’

PGP refers to Pretty Good Privacy. It is used to encrypt emails to enhance security. It does not rely on Digital Certificates for encryption. The PGP makes use of public key cryptography. PGP is the mailing standard that relies on Web of Trust.

Thus, the correct option is B. Pretty Good Privacy (PGP).