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Post-quantum Security of the CBC, CFB, OFB, CTR, and XTS Modes of Operation
Post-quantum cryptography Block ciphers Modes of operation
2016/2/25
We examine the IND-qCPA security of the wide-spread block cipher modes of operation
CBC, CFB, OFB, CTR, and XTS (i.e., security against quantum adversaries doing queries
in superposition). We show t...
An Attack on CFB Mode Encryption As Used By OpenPGP
OpenPGP Cipher-Feedback Mode encryption chosen-ciphertext attacks
2009/1/14
This paper describes an adaptive-chosen-ciphertext attack on the Cipher Feedback (CFB) mode of encryption as used in OpenPGP. In most circumstances it will allow an attacker to determine 16 bits of an...