Secure PKI proxy and method for instant messaging clients

摘要

Briefly, an instant messaging secure PKI proxy provides public key-based secure instant messaging by intercepting messages to or from an instant messaging client, such as an instant messaging client running on a client device, and applies a public key-based cryptographic operation on the intercepted instant messages using at least a private key associated with an instant message originator or a public key associated with an instant message originator to produce an end-to-end public key infrastructure secured instant message. As such, the device and methods provide non-services repudiation and public key-based encryption services for content of instant messages during an instant message session helping to insure that the information will not be disclosed to unauthorized parties and assuring that the identities of all the participants are known and trusted without impairing local messaging clients.