Provably Secure and Practical Identification Schemes and Corresponding Signature Schemes.

Tatsuaki Okamoto Provably Secure and Practical Identification Schemes and Corresponding Signature Schemes. 31-53 http://dx.doi.org/10.1007/3-540-48071-4_3 1992 conf/crypto/1992 CRYPTO db/conf/crypto/crypto92.html#Okamoto92