Untraceable blind signature and multi-blind signature scheme

Blind signature is that a signer don't known any information about the message signed by his/her. It can keep the privacy of the receiver in a proper environment, so it can be put into practice in the application of e-check payment. This paper proposes a blind signature and multi-blind signature scheme. The scheme needn't to use the Hash function, only need to introduce one random number, and the computation quantity is greatly small, so it has some practicality.