Signcryption

Abstract:

Signcryption is a new cryptographic primitive, which simultaneously provides both confidentiality and authenticity. Previously, these two goals had been considered separately, with encryption scheme provide confidentiality and digital signature provides authenticity. In cases where both required, the encryption operations and digital signature operations were simply sequentially composed. In 1998, Zheng demonstrated that by combining both goals into a single primitive it is possible to achieve significant savings both in computational and communication overhead. Since a wide variety of signcryption schemes have been proposed. In this seminar we discuss one algorithm for signcryption and advantages and disadvantages of signcryption. Compares signcryption with signature then encryption and application of signcryption.

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