The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 17, 2012
Filed:
Dec. 26, 2000
Glenn Langford, Kanata, CA;
Glenn Langford, Kanata, CA;
Entrust, Inc., Dallas, TX (US);
Abstract
Systems, methods, components are provided all for the purpose of controlling access to decryption keys needed to decrypt ciphertext. A key release agent is provided which controls decryption key distribution. The key release method starts with receiving an encrypted key, key related information and decryptor information from a decryptor and determining a whether a private key corresponding to the key ciphertext is available. Upon determining the private key corresponding to the key ciphertext is available, a decision is made based on decryptor information of the decryptor and the key related information whether decryption of the key ciphertext is to be permitted. Decryptors adapted to participate with the KRA in the above described key distribution methods are also provided.