Chharchhodawala, Mohammad2018-08-022018-08-02201839p.http://hdl.handle.net/10263/6954Dissertation under the supervision of Prof. Debrup Chakraborty, CSR UnitenHCTRLength-preserving enciphering schemeInverse free schemesTweakable enciphering schemeInverse free HCTRa length preserving tweakable enciphering modeArticle