Title :
Cryptanalysis of a strong proxy signature scheme with proxy signer privacy protection
Author :
Sun, Hung-Min ; Hsieh, Bin-Tsan
Author_Institution :
Dept. of Comput. Sci., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
Shum and Wei proposed an enhancement to the Lee et al.´s strong proxy signature such that the proxy signer´s identity is hidden behind an alias. We show that Shum and Wei´s enhancement is insecure against the original signer´s forgery. In other words, their scheme does not possess the strong unforgeability security requirement.
Keywords :
cryptography; data privacy; handwriting recognition; message authentication; cryptanalysis; proxy signature; proxy signer privacy protection; signer forgery; Computer science; Equations; Forgery; Information security; Mobile agents; Privacy; Protection; Protocols; Public key; Sun;
Conference_Titel :
Security Technology, 2003. Proceedings. IEEE 37th Annual 2003 International Carnahan Conference on
Print_ISBN :
0-7803-7882-2
DOI :
10.1109/CCST.2003.1297606
