Improved Identity-Based Signcryption
Improved Identity-Based Signcryption
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DOI：
10.1007/978-3-540-30580-4_25
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发表时间：
2005-01
期刊：
影响因子：
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通讯作者：
Liqun Chen;J. Malone-Lee
中科院分区：
文献类型：
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作者：
Liqun Chen;J. Malone-Lee
基于身份的加密是公钥加密的一种形式，它不要求用户预先计算密钥对并为其公钥获取证书。相反，公钥可以是任意标识符，如电子邮件地址。这意味着相应的私钥是由一个可信的私钥生成器在任何时候导出的。签密的思想是提供一种方法来加密和签名数据在一起的方式，这是更有效的方式比使用一个加密方案与签名方案相结合。我们提出了一个基于身份的签密解决方案，我们相信是最有效的，可证明安全的方案的类型提出日期。我们的计划承认在双线性Diffie-Hellman假设下使用Boyen提出的定义的随机预言机模型的安全性证明。
Identity-based cryptography is form of public-key cryptography that does not require users to pre-compute key pairs and obtain certificates for their public keys. Instead, public keys can be arbitrary identifiers such as email addresses. This means that the corresponding private keys are derived, at any time, by a trusted private key generator.The idea of signcryption is to provide a method to encrypt and sign data together in a way that is more efficient than using an encryption scheme combined with a signature scheme.We present an identity-based signcryption solution that we believe is the most efficient, provably-secure scheme of its type proposed to date. Our scheme admits proofs of security in the random oracle model under the bilinear Diffie-Hellman assumption using the definitions proposed by Boyen.