Abstract: A method and system for authenticating the identity of a client device that is calling a remotely located server over a network. A client device inputs information pertaining to a hardware characteristic and a network address thereof into a cryptographic hash function stored on the client device. The hash function computes a unique registration ID hash code and presents it to the system server during a registration process. The system server then generates a digital certificate having a system-side key (i.e., public key). A client-side key (i.e., private key) is provided to the client device. For all future calls to the system server, the client device re-computes its registration ID hash code and then digitally signs it using its client-side key. The system server then uses its system-side key to examine the digitally signed registration ID hash code to authenticate the identity of the client device.

Abstract: A method and system for authenticating the identity of a client device that is calling a remotely located server over a network. A client device inputs information pertaining to a hardware characteristic and a network address thereof into a cryptographic hash function stored on the client device. The hash function computes a unique registration ID hash code and presents it to the system server during a registration process. The system server then generates a digital certificate having a system-side key (i.e., public key). A client-side key (i.e., private key) is provided to the client device. For all future calls to the system server, the client device re-computes its registration ID hash code and then digitally signs it using its client-side key. The system server then uses its system-side key to examine the digitally signed registration ID hash code to authenticate the identity of the client device.