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Q. PGP offers _____ block ciphers for message encryption.

Q. In cryptography, what is cipher?

Q. PGP encrypts data by using a block cipher called ______

Q. Voice privacy in GSM cellular telephone protocol is provided by _______

Q. A way to ensure that the entity is indeed what it claims to be.-

Q. In ______, there is a single path from the fully trusted authority to any certificate.

Q. In Asymmetric-Key Cryptography, the two keys, e and d, have a special relationship to

Q. VPNs uses encryption techniques to maintain security and privacy which communicating remotely via public network.

Q. A process of making the encrypted text readable again.

Q. Circuit-level gateway firewalls are installed in _______ layer of OSI model.