CipherTrace - Pricing, Features, and Details in 2026

Shakespeare's Cipher

SOLVED: PGP makes use of the cipher feedback (CFB) mode of CAST-128, whereas most symmetric encryption applications (other than key encryption) use cipher block chaining (CBC) mode. These two appear to provide equal security. Suggest a reason why PGP uses the CFB mode.

3 Ways to Encode and Decode Using the Vigènere Cipher - wikiHow