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cs.CR2018
Efficient Construction of a Substitution Box Based on a Mordell Elliptic Curve Over a Finite Field
Naveed Ahmed Azam, Umar Hayat, Ikram Ullah
Elliptic curve cryptography (ECC) is used in many security systems due to its small key size and high security as compared to the other cryptosystems. In many well-known security s…
physics.flu-dyn2018
Discrete resonant Rossby/drift wave triads: an explicit parameterisation and a fast direct numerical search algorithm
Umar Hayat, Shahid Amanullah, Shane Walsh +1
We report results on the explicit parameterisation of discrete Rossby-wave resonant triads of the Charney-Hasegawa-Mima equation in the small-scale limit (i.e. large Rossby deforma…