Cryptanalysis of the Hwang-Shi Proxy Signature Scheme

• Autorzy: Hwang M-S. , Lee C-C. , Hwang S-J.
• Języki publikacji: EN

Abstrakty

EN

Recently, Hwang and Shi proposed an efficient proxy signature scheme without using one-way hash functions. In their scheme, an original signer needn't send a proxy certificate to a proxy signer through secure channels. However, there are two public key substitution methods that can be used to attack their scheme. In this article, we show that their scheme is vulnerable to the public key substitution attacks.

Słowa kluczowe

EN

cryptography; digital signature; one-way hash function; proxy signature

• Wydawca: IOS Press
• Czasopismo: Fundamenta Informaticae
• Rocznik: 2002
• Tom: Vol. 53, nr 2
• Strony: 131--134
• Opis fizyczny: bibliogr. 10 poz.

Twórcy

autor

Hwang M-S.

autor

Lee C-C.

autor

Hwang S-J.

• Department of Information Management and Graduate Institute of Networking and Communication Engineering, Chaoyang University of Technology, 168 Gifeng E. Rd., Wufeng, Taichung County, Taiwan 413, R.O.C.,