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Tweaking Generic OTR to Avoid Forgery Attacks
Authenticated encryption OTR confidentiality
2018/1/19
This paper considers the security of the Offset Two-Round (OTR) authenticated encryption mode \cite{cryptoeprint:2013:628} with respect to forgery attacks. The current version of OTR gives a security ...
Trick or Tweak: On the (In)security of OTR’s Tweaks
cryptanalysis authenticated encryption CAESAR competition
2016/3/4
Tweakable blockcipher (TBC) is a powerful tool to design authenticated encryption
schemes as illustrated by Minematsu’s OTR construction. It considers an additional input, called
tweak, to a standar...
We present a forgery attack on Prøst-OTR in a related-key
setting. Prøst is a family of authenticated encryption algorithms proposed
as candidates in the currently ongoing CAESAR compe...