Conference Proceeding Article
Signcryption, first proposed by Zheng [4, 5], is a cryptographic primitive which combines both the functions of digital signature and public key encryption in a logical single step, and with a computational cost siginficantly lower than that needed by the traditional signature-then-encryption approach. In Zheng's scheme, the signature verification can be done either by the recipient directly (using his private key) or by engaging a zero-knowledge interative protocol with a third party, without disclosing recipient's private key. In this note, we modify Zheng's scheme so that the recipient's private key is no longer needed in signature verification. The computational cost of the modified scheme is higher than that of Zheng's scheme but lower than that of the signature-t hen-encryption approach.
Databases and Information Systems | Information Security
Proceedings of the 1st International Workshop on Practice and Theory in Public Key Cryptography: PKC 1998, Yokohama, Japan, February 5–6
City or Country
BAO, Feng and DENG, Robert H..
A signcryption scheme with signature directly verifiable by public key. (1998). Proceedings of the 1st International Workshop on Practice and Theory in Public Key Cryptography: PKC 1998, Yokohama, Japan, February 5–6. 55-59. Research Collection School Of Information Systems.
Available at: http://ink.library.smu.edu.sg/sis_research/3886