INTEGRITY OF DIGITALLY SIGNED MESSAGES USING JOINT SIGNATURE SCHEME

In this era of advanced technology, mobile commerce is going to become popular due to rapid development of technology but this technology needs a lot of struggle for maintaining secure communication and protection from threats. In this research, a mechanism for secure and authentic communication in mobile commerce based on joint signature scheme is presented. This technique ensures the integrity of digitally signed messages using joint signature scheme which show that the message which is sent by the message sender have not been altered by any unauthorized person by digitally signing the message. This technique is efficient in mobile domain because it is less computative and easily used with limited resources in mobile commerce. Joint signature scheme is based on hash functions and encryption/decryption technique to produce joint signature with the help of message sender and trusted third party and also to authenticate the message for the message sender and the message receiver. This technique overcomes the drawbacks of traditional digital scheme, such as computation/communication load, complexity, public key operations etc.