Proxy Blind Signature Scheme based on Non-commutative Division Semi-rings

Proxy signatures, introduced by Mambo, Usuda and Okamoto, allow a designated person to sign on behalf of an original signer. Division semi-ring has been playing an important role in the theory of cryptography as these are non-commutative division semi-rings used in cryptography. Some digital signature schemes have been given but no proxy blind signature has been introduced over division semi-rings. In this paper we have proposed blind proxy signature scheme using conjugacy search problem over non-commutative division semi rings.