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Randomization Enhanced Blind Signature Schemes Based on RSA
Moonsang KWON Yookun CHO
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/03/01
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Information Security
blind signature scheme, anonymity, chosen-plaintext attack, randomization,
Full Text: PDF(144.8KB)>>
In this letter, we show that Fan-Chen-Yeh's blind signature scheme and Chien-Jan-Tseng's partially blind signature scheme are vulnerable to the chosen-plaintext attack. We also show that both schemes can be modified so that the chosen-plaintext attack is impossible. But, still Chien-Jan-Tseng's partially blind signature scheme is vulnerable. It fails to satisfy the partial blindness property.