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Home › Revocation of a certificate and exclusion of other principals in a digital rights management (DRM) system based on a revocation list from a delegated revocation authority

Revocation of a certificate and exclusion of other principals in a digital rights management (DRM) system based on a revocation list from a delegated revocation authority

US Patent 7543140 · Granted Jun 2, 2009

Estimated economic value: $32,982,000 ⓘ

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