Patent ID: 7197143

Claim:
A system for recording digital signatures associated with recorded digital video wherein the digital signatures are used to authenticate the recorded digital video, the system comprising: a digital video authenticator (DVA) device adapted to receive digital video from the digital video recording device on a real time frame-by-frame basis; and a security token including an RSADSA private key and an agent certificate, the agent certificate comprising information identifying an agent and an RSADSA public key, wherein prior to recording digital video, the security token and digital video recording device are operably connected to the DVA; an ECDSA public/private key pair is created within the DVA using the security token; an integrity certificate including the ECDSA public key is created and stored on a digital signature removable storage medium within the DVA; and while the digital video recording device records digital video to its own storage medium, the DVA: receives and buffers the digital video being recorded by the digital video recording device on a real time frame-by-frame basis; parses each frame of the buffered digital video into a video block, an audio block, a digital video recording device control block, and a DVR control block; generates a digital signature for each digital video block of data using the ECDSA private key; and records the digital signatures to the removable storage medium within the DVA.