GIAC Security Essentials Certification (GSEC) — Question 41

When using Pretty Good Privacy (PGP) to digitally sign a message, the signature is created in a two-step process. First, the message to be signed is submitted to
PGP's cryptographic hash algorithm. What is one of the hash algorithms used by PGP for this process?

Answer options

• A. Blowfish
• B. DES
• C. SHA-l
• D. Cast

Correct answer: C

Explanation

SHA-l is a widely used cryptographic hash function that ensures message integrity, making it suitable for digital signatures in PGP. The other options, Blowfish, DES, and Cast, are encryption algorithms rather than hash functions, and therefore not applicable in this context.