An efficient and provably secure identity-based signature scheme in the standard model

作者：Li Ji Guo^*; Jiang Ping Jin

来源：Chinese Journal of Computers, 2009, 32(11): 2130-2136.

DOI：10.3724/SP.J.1016.2009.02130

• Bilinear pairing
• Chosen message attacks
• Diffie-Hellman assumption
• Identity based signature
• Identity-based
• Identity-based cryptosystem
• Identity-based signature scheme
• Key management
• Provably secure
• Public key cryptosystems
• Random Oracle
• Random Oracle model
• Standard model
• The standard model

Compared with the traditional public key cryptosystem, identity-based cryptosystem can simplify the key management procedure from the view point of the efficiency and convenience. Most of identity-based signature schemes are secure in the random oracle model, but for which any implementation of the random oracle results in insecure schemes. For example, when random oracle is instantiated with concrete hash functions, the resulting scheme is nonrandom which may not be secure. This paper proposes an efficient and provably secure identity-based signature scheme. The scheme is existentially unforgeable against adaptive chosen message attacks under the computational Diffie-Hellman assumption in the standard model. Compared with the known identity-based scheme secure in the standard model, the scheme enjoys shorter signature length and less operation.

• 出版日期2009
• 单位河海大学