Patent ID: 9729333
Date: 2017-08-08
CPC Classifications: H04L

Claim:
1. The device for validating data using a root certificate, wherein a plurality of root certificates is stored in the device, each root certificate having a rank, and wherein the device is configured to receive revocation information indicating at least one revoked root certificate, to validate the revocation information using one of the root certificates stored in the device and to block the use of the revoked root certificate if the revocation information is successfully validated using a root certificate having a higher rank than the revoked root certificate, wherein the device is adapted to receive different versions of the revocation information, each version of the revocation information indicating all root certificates that have been revoked until the issuance of the version, wherein a minimum version of the revocation information is allocated to at least one program application included in the device, and wherein the device is configured to execute an error routine, if it is not verified that the applied version of the revocation information is equal to or greater than the minimum version, and wherein the minimum version of the revocation information is specified by a content provider.