基于McEliece公钥密码体制的盲签名算法研究

摘要

Due to the threat of quantum computer on public - key cryptography, the public key cryptosystems against quantum computing has become the focus of research in information security field. A blind sig- nature based on McEliece public key cryptography was proposed aiming at protecting of consumers'anonymi- ty. By Hash on a message and blind process ensure signed message and behavior cannot be linked. At the same time the signature of receiver's identity is kept secret and will never be leaked out, with unconditional intractability and security for this kind of blind signature is analyzed. Result shows that this model has the advantages of inheriting the security of McEliece public-key cryptography, having the general basic proper- ties of digital signatures and blind signatures, resisting quantum computer attack and eventually has a very strong security.%由于量子计算机对现用公钥密码体制的威胁，抵抗量子计算的公钥密码体制已经成为信息安全领域研究的重点。针对消费者的匿名性保护问题，本文提出一种基于McEliece公钥密码体制的盲签名算法。通过对消息进行Hash，盲化和去盲过程，保证签名的消息与签署行为不可链接，且永远不会被泄露，具有无条件不可追踪性。文章还对这种盲签名的安全性进行分析，分析结果表明，此模型既继承了McEliece公钥密码体制的安全性，能抵抗量子计算机的攻击，也具有一般数字签名和盲签名的基本性质，具有很强的安全性。