olemus
krüptoprotokollides: vastane, kes kaldub kõrvale protokolli reeglitest, teistele pooltele nähtamatul viisil
= an adversary who might deviate from the cryptographic protocol, but who does not want to be caught

tõrje
https://eprint.iacr.org/2007/060.pdf
https://www.iacr.org/archive/eurocrypt2008/49650287/49650287.pdf
http://dspace.ut.ee/bitstream/handle/10062/56359/pankova_alisa.pdf