Unconditionally secure signature is an important part of quantum cryptography. Usually, a signature scheme only provides an environment for a single signer. Nevertheless, in real applications, many signers may collabo...Unconditionally secure signature is an important part of quantum cryptography. Usually, a signature scheme only provides an environment for a single signer. Nevertheless, in real applications, many signers may collaboratively send a message to the verifier and convince the verifier that the message is actually transmitted by them. In this paper, we give a scalable arbitrated signature protocol of classical proved to be secure even with a compromised arbitrator. messages with multi-signers. Its security is analyzed and proved to be secure even with a compromised arbitrator.展开更多
基金Supported by the National High-Tech Research,Development Plan of China under Grant Nos.2006AA01Z440,2009AA012441,2009AA012437National Basic Research Program of China (973 Program 2007CB311100)+4 种基金the National Natural Science Foundation of China under Grant Nos.60873191 and 60821001Specialized Research Fund for the Doctoral Program of Higher Education under Grant Nos.20091103120014,20090005110010Beijing Natural Science Foundation under Grant Nos.1093015,1102004the Scientific Research Common Program of Beijing Municipal Commission of Education under Grant No.KM200810005004the ISN Open Foundation
文摘Unconditionally secure signature is an important part of quantum cryptography. Usually, a signature scheme only provides an environment for a single signer. Nevertheless, in real applications, many signers may collaboratively send a message to the verifier and convince the verifier that the message is actually transmitted by them. In this paper, we give a scalable arbitrated signature protocol of classical proved to be secure even with a compromised arbitrator. messages with multi-signers. Its security is analyzed and proved to be secure even with a compromised arbitrator.
