Abstract
In general, a weak blind signature has the characteristics of no-counterfeiting, no-disavowing, blindness and traceability. In this paper, a weak blind signature scheme based on the correlation of Einstein-Padolsky-Rosen (EPR) pairs (Xiaojun et al., 2009) is revisited, and it will be shown that the scheme in its original form does not complete the task of a blind signature fairly. Key words: Quantum cryptography, blind signature, weak blind signature.
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