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Proxy signature is a powerful cryptographic primitive for delegating the signing powers. In this paper, we propose a new construction of novel proxy signature scheme, in which the proxy signing efficiency is highly efficient. Specifically, we describe a new and efficient proxy signature scheme from DL assumption. Our construction makes use a exposure free chameleon hash function in the delegation...
Proxy blind signature is a cryptographic research hotspot, and has been applied in many occasions. Many proxy blind signature schemes were proposed, however, all the schemes rely on secure channels to transmit proxy secret key. Therefore, Lu, Cao and Zhou proposed a new proxy blind multi-signature scheme recently, which does not need a secure channel and is provably secure under the random oracle...
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