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An Improved RSA Variant

Seema Verma, Deepak Garg

As RSA is the most popular and widely used in e-commerce, there is the need to make it more and more efficient. One of the RSA variant, i.e., Dual RSA, is designed to reduce the memory consumption for the two RSA instances. Based on Dual RSA Small d, a new scheme is designed such that the online encryption time becomes almost negligible having the same decryption performance as in Dual RSA small d. The scheme is implemented to reflect the theoretical results. The resulting scheme is efficient in encryption, decryption performance and memory consumption. Hence the scheme is suitable to be used in resource constrained environment. Scheme also exhibits the property of semantic security.