Abstract: Chameleon signature is a non-interactive signatures, and its building block is Chameleon Hash function, a trapdoor one-way Hash function. The distinguishing characteristic of Chameleon signature is non-transferable and non-repudiation. This paper proposes a ID-based Chameleon digital signature which makes use of ID-based signature scheme from bilinear pairings byte Combining with Chameleon Hash function. Compared with the conventional Chameleon Hash functions, the owner of a public Hash key in the ID-based Chameleon Hash scheme does not necessarily need to retrieve the associated secret key in the scheme and it is an appointed verifier scheme.

Key words: Chameleon Hash, ID-based Chameleon digital signature, bilinear pairing

摘要： 卡梅隆签名是一种非交互式的数字签名，其使用的Hash函数是一种特殊的陷门单向Hash函数——卡梅隆Hash。卡梅隆数字签名具有不可传递性和不可否认性等优点。该文利用基于身份和双线性对的签名方案，结合卡梅隆Hash函数，构造了基于身份的卡梅隆数字签名方案。与传统的卡梅隆方案相比，该方案中公开Hash密钥的所有者无须恢复相应的私钥，且是指定验证者的方案。

关键词: 卡梅隆Hash, 基于身份的卡梅隆数字签名, 双线性对

CLC Number: 

• TP309