e/Impossible differential cryptanalysis

Information
has gloss	eng: In cryptography, impossible differential cryptanalysis is a form of differential cryptanalysis for block ciphers. While ordinary differential cryptanalysis tracks differences that propagate through the cipher with greater than expected probability, impossible differential cryptanalysis exploits differences that are impossible (having probability 0) at some intermediate state of the cipher algorithm.
lexicalization	eng: impossible differential cryptanalysis
instance of	c/Cryptographic attacks