Proxy Promised Signcrypion Scheme Based on Elliptic Curve Crypto System

With the rapid growth in internet technology anonymity, repudiation and smacking the contents of messages are required for illegal businesses such as money laundering etc. In this paper we design and analyze a proxy promised signcrypion scheme based on elliptic curve cryptosystem. In this system the sender/original signer can give the authority of signcrypion to another entity namely proxy signcrypter and he generates promised signcryptext on the place of sender. The scheme is accomplished aim to improve the previous crypto-systems, due to the elliptic curve small system parameter, small public key certificates, faster implementation, low power consumption and small hardware processor requirements. This ECC based scheme provides high security and efficiency.