基于复杂序列映射的离散信息签密安全模型

Discrete Information Signcryption Model Based on Complex Sequence Mapping

传统的无双线性对的无证书签密方案,大都存在着机密性漏洞和签名选择性伪造问题,无法保证信息安全。为了提高信息签密安全,提出一种基于复杂序列映射的离散信息签密安全模型,采用私钥属性不变的签密方案,对用户隐私数据私钥属性限定密文长度,在固定密文长度情况下构建高维高秩的解密明文信息矩阵,生成的随机数对信源发出信源密钥,替换用户公钥,构建离散信息无证书签密安全模型,基于复杂序列映射的离散信息签密安全模型,采用复杂序列映射机密性分析和签名伪造分析,避免使用随机预言模型导致信息泄露,提高离散信息签密的安全性,实现算法改进。仿真实验表明,该算法减少了数据分组在节点中的排队时间,一定程度上均衡负载,具有较好的信息签密安全性,为数据传输提供一定程度的QoS支持,保证了通信信息安全。

Peerless linear traditional certificateless signcryption scheme for free, there are secret vulnerability and signature selective forgery problem, it cannot guarantee the safety of information, in order to improve the information signeryption, proposed one kind based on complex sequence mapping of discrete information signcryption models using signcryption scheme, private key attributes unchanged, on the user privacy data private key attribute defines the length of ciphertext decryption plaintext matrix construction, high vitamin and rank in the fixed length of ciphertext case, random number generation from the information source to replace key source, user＇s public key, the construction of the discrete information certificateless signcryption security model, based on complex sequence mapping of discrete information signcryption model, using complex sequence analysis and mapping confidentiality signature forgery analysis, to avoid the use of the random oracle model lead to information leakage, improve the discrete information sign safety dense, realize the algorithm improvement. Simulation results show that the algorithm reduces the queuing time data packets in the node, to a certain extent, balance the load, and has better information signcryption safety, provide a degree of support for QoS data transmission, which guarantee the communication of information security.