Importance

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Abstract

A structured digital certificate is adapted to be certified by a digital signature of a certificate authority in an unprotected form, a first protected form, and a second protected form of the digital certificate. The digital certificate includes a first type field of authorization information relevant to a first recipient and being readable in the unprotected form and the first protected form of the digital certificate, and a first cryptographic folder containing a second type field of authorization information relevant to a second recipient and being readable in the unprotected form and the second protected form of the digital certificate, but not readable in the first protected form of the digital certificate. The digital certificate is configured to permit the subject to convert the structured digital certificate from the unprotected form to at least one of the first protected form and the second protected form. The digital certificate is convertible into the first protected form to permit the first recipient to authorize the subject of the structured digital certificate, into the second protected form to permit the second recipient to authorize the subject of the structured digital certificate.

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First Claim