This talk basically consists of two parts. First is, attacks on the stream cipher 'Sprout' and the second is, constructions of T-function, which carries good cryptographic properties.The design Specification of Sprout was proposed at FSE, 2015. Firstly, I will discuss about fault attack on Sprout then I will talk about the weak key-IV pairs of the same cipher. The second part of my talk deals with a new and interesting cryptographic primitive known as 'T-function', which was introduced by Klimov and Shamir in 2003. I will discuss its construction along with its various properties.
School of Mathematical Sciences
NISER, PO- Bhimpur-Padanpur, Via- Jatni, District- Khurda, Odisha, India, PIN- 752050