| 摘要 |
PURPOSE: A blind signature method using elliptical curve is provided to proceed blind signature using the prime factorization based elliptical curve on Zn so as not to trace the relationship between a message and a person who received the signature. CONSTITUTION: A super singular elliptical curve is selected(201), a prime number p is selected(202), and a prime number q is selected(202). n = pq is calculated(204). Nn = lcm(#Ep(0, b), #Eq(0, b)) = lcm(p + 1, q + 1) is calculated(205), where lcm means lowest common multiple. The public key(e) of (Nn, e) = 1 is generated, and the secret key(d) satisfying ed = 1(mod Nn) is generated(206). The public keys(e, n) are opened as the key of the signer, and the secret key(d) is distributed to the signer secretly(207).
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