Title :
Cryptanalysis and improvement of signcryption schemes
Author :
Petersen, H. ; Michels, M.
Author_Institution :
r3 Security Eng., Wetzikon, Switzerland
fDate :
3/1/1998 12:00:00 AM
Abstract :
In 1997, two new schemes for authenticated encryption, called signcryption, were proposed by Zheng. In the paper, the authors point out a serious problem with these schemes. In fact, the way to gain nonrepudiation violates the confidentiality. The authors compare the schemes to previously known authenticated encryption schemes which were not mentioned by Zheng. Finally, the authors outline a solution that helps to overcome the problem
Keywords :
cryptography; authenticated encryption; confidentiality; cryptanalysis; nonrepudiation; signcryption;
Journal_Title :
Computers and Digital Techniques, IEE Proceedings -
DOI :
10.1049/ip-cdt:19981862