Abstract: A method for sending a secure message in a telecommunications system utilizing public encryption keys. All authentication parameters of each of the users, including each user's decryption key that is known only to the user, are used to verify, by public key methods, the identity of a user sending a communication to another user of the system. During the authentication process, an encryption key for use in communications between the two users may also be generated. The generated encryption key may be a private session key. Once the initial authentication is completed, the private session key can be used to perform encryption that is less computationally demanding than public key methods. In an embodiment of the invention, two communicating users may use the method to authenticate each other and generate an encryption key that is used to encrypt subsequent communications between the users. During the process of this embodiment, two encryption keys are generated.

Abstract: A method for sending a secure message in a telecommunications system utilizing public encryption keys. All authentication parameters of each of the users, including each user's decryption key that is known only to the user, are used to verify, by public key methods, the identity of a user sending a communication to another user of the system. During the authentication process, an encryption key for use in communications between the two users may also be generated. The generated encryption key may be a private session key. Once the initial authentication is completed, the private session key can be used to perform encryption that is less computationally demanding than public key methods. In an embodiment of the invention, two communicating users may use the method to authenticate each other and generate an encryption key that is used to encrypt subsequent communications between the users. During the process of this embodiment, two encryption keys are generated.

Abstract: A method for sending a secure message in a telecommunications system using public encryption keys. A sending transceiver encrypts the message c using the sender's own public encryption key Ex to generate Ex(c), and, transmits the encrypted message Ex(c) to a receiving transceiver. The receiving transceiver then encrypts the encrypted message Ex(c) using the encryption key Ey of the intended receiver of the message to generate the message Ey(Ex(c)), and, transmits the message Ey(Ex(c)) back to the sending transceiver. The sending transceiver then decrypts the message Ey(Ex(c)) using sender's private decryption key to generate Dx(Ey(Ex(c)))=Ey(c), and, transmits the message Ey(c) back to the receiving transceiver.