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Modified Harn signature scheme based on factorising and discrete logarithms

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2 Author(s)
Lee, N.-Y. ; Inst. of Inf. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan ; Hwang, T.

L. Harn (1994) proposed a digital signature scheme which was claimed to be unbreakable if the factorisation and the discrete logarithms are simultaneously unsolvable. The paper shows that `hackers' can forge the signatures of Harn schemes with high probabilities, if they can solve the discrete logarithms modulo α large prime number. The Harn signature scheme is modified to give it the same degree of security as was originally claimed

Published in:
Computers and Digital Techniques, IEE Proceedings -  (Volume:143 ,  Issue: 3 )

Date of Publication: May 1996

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