一种基于ECC的消息安全交换方案

Scheme of Secure Message Interchange Based on ECC

提出一种基于ECC的消息安全交换方案,实现建立在ECC之上的消息安全交换的数字签名和加密消息的会话密钥交换。利用有限域上椭圆曲线点群中的离散对数问题的难解性来增强协议的安全性。通信的各方产生自己的私钥和公钥对,用户的证书由CA签发后交给用户保存,交换的消息和签名等信息采用压缩加密传输,避免了消息在传输的过程中被第三者窃取或篡改,保证了数据的机密性、完整性和不可否认性。

A scheme of secure message interchange based on Elliptic Curves Cryptosystem （ECC） is proposed in this paper. The digital signature and symmetric key exchange in the scheme both are established on ECC. The computational intractability of the Elliptic Curve Discrete Logarithm Problem （ECDLP） over a finite field enhances security of the scheme. Each end user in a network generates its own private key and public key. Users＇ certificates are signed by CA and then sent to each user to keep respectively. The message and its digital signature are encrypted to transmit in the network without disclosure. The scheme proposed here provides mutual authentication between the sender and the recipient and ensures confidentiality, integrity and nonrepudiation of the interchanged messages.