Research Of Elliptic Curve Digital Signature Scheme

Along with the continuous development and application of Information Technology, the security of information has become increasingly important. signature technology ensures participator's identification against malicious bugging and distorting, and plays an important role in protecting the security of networking communication. So far, Elliptic Curve Cryptosystem provides the highest strength一per-bit of any public-key cryptosystems. In addition to its higher security, Elliptic Curve Cryptosystem also has many other advantages, such as the less computation overheads, shorter key size, considerable bandwidth savings and so on. Thus ECC-based digital signature scheme attracts the most attention.Firstly, in this paper it is talked about the present state of elliptic curve cryptology, summarized the former outstanding contribution on the signature. Secondly, I improve the ECDSA scheme. Finally, two new ECC-based digital signature schemes with message recovery are presented. In this paper not only gives the validated protocol and denied protocol but also discusses the security of the scheme in detail. New scheme combines a common ECC-based signature scheme with redundancy function(or hash function), which allows signature with message recovery.