关键词: 代理签密，自认证代理签密，自认证签密，椭圆曲线离散对数问题

Abstract: To overcome certificate management problem and key escrow problem in proxy signcryption schemes, a new self-certified proxy signcryption scheme based on elliptic curve cryptography(ECC) was proposed, it hardness relys on elliptic curve discrete logarithm problem(ECDLP). Compared with the existence hteratures, the proposed scheme possesses good security and shorter keyless requirement of storage space and less bandwith requirement,lower computational complexity and communication cost.

Key words: Proxy signcryption,Self-certified proxy signcryption,Self-certified signcryption,Elliptic curve discreate logarithm problem