Secure Messaging System for Multiple Recipients

Secure communication in physicallyvulnerable networks depends upon encryption of materialpassed between machines. It is feasible for each computer in thenetwork to encrypt and decrypt material efficiently witharbitrary keys. Computer systems store large amount ofinformation, some of which is highly sensitive and valuable totheir users. Users can trust and rely on it only if the variousresources and information of a computer system are protectedagainst destruction and unauthorized access. In a computingsystem, the data and information is shared among many users,the system is mainly to apply the public-key encryption , toprovide or confidentially and data origin authentication ordataintegrity. This system encrypted messages with OAEP combinedthe RSA. An asynchronous send simply queues the message fortransmission without waiting for it to be received by using thepublic –key encryption, user responsible for kept their secretprivate key and high-security data encryption which isperformed for the multiple receipients