Patent ID: 9608993
Date: 2017-03-28
CPC Classifications: H04L,H04W

Claim:
1. A computer implemented anonymous credential method for credential abuse prevention and efficient revocation, the method comprising: acquiring a credential from an issuer at a user; registering the user and credential with an oblivious monitor; embedding a usage limitation value provided by the oblivious monitor into the credential; generating a user presentation token at the user using the credential; requesting presentation with the oblivious monitor by the user, wherein the user presentation token is transmitted to the oblivious monitor; verifying the user presentation token, wherein presentation is aborted if verification fails; transmitting, from the oblivious monitor, an oblivious monitor presentation token portion to the user in response to the verification passing; transmitting a combined presentation token to a verifier, wherein the combined presentation token comprises the user presentation token and the oblivious monitor presentation token portion; and verifying the combined presentation token at the verifier.