24 Questions
Which of the following best describes PGP?
A collection of software tools for confidentiality and authentication
Who created PGP?
Phil Zimmerman
What is OpenPGP?
A specification for cryptographic applications developed by IETF
What is GnuPG?
GNU Privacy Guard Equivalent and compatible with PGP
What is the purpose of creating public key/private key pair in PGP/GnuPG?
To enable secure communication with others
What is the purpose of passphrase in PGP/GnuPG?
To protect the private key
What is the purpose of symmetric cryptosystem in secure e-mail?
To encrypt the plaintext with a random key K
What is the purpose of public key cryptosystem in secure e-mail?
To encrypt the symmetric key K
What is the purpose of digital signatures in PGP?
To verify the authenticity of the message
What is the purpose of timestamps in PGP?
To authenticate time
What is the conclusion about PGP?
PGP was revolutionary when it was introduced but lacks modern trends in crypto protocols
What is the license of GnuPG?
GNU General Public License
What are some of the software tools included in PGP?
confidentiality (encryption) and authentication (digital signatures)
Who created PGP and when?
Phil Zimmerman in the early nineties
What is the current status of free versions of PGP?
some free versions may still be available, but mainly replaced by GnuPG
Who currently produces commercial versions of PGP?
Symantec (previously from PGP Corporation, Network Associates/McAfee)
What is OpenPGP and who developed it?
a specification (standard) for cryptographic applications developed by IETF (Internet Engineering Task Force, www.ietf.org ) as RFC 4880 (previously RFC-2440)
What is the difference between PGP and GnuPG?
GnuPG is the GNU Privacy Guard equivalent and compatible with PGP
What does OpenPGP keys contain?
the public key and information about the owner, as well as signatures of the key owner and of other users
What is the purpose of a passphrase in PGP/GnuPG?
to protect the private key
What is the purpose of compressing plaintext before encryption in secure e-mail?
to decrease redundancy
What is the purpose of a timestamp in PGP?
for authenticating time
What are some modern end-to-end encryption protocols for secure messaging?
e.g. Signal (also used by WhatsApp)
What is the license of GnuPG?
Free software under GNU General Public Licence
Test your knowledge of Pretty Good Privacy (PGP), a collection of software tools used for email and file storage encryption and digital signatures. Learn about its creator Phil Zimmerman, its history as free software, and its commercial versions. See how well you know the ins and outs of PGP technology. Take the quiz now!
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