Key release systems, components and methods
US8161565B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 26, 2000 |
| Grant date | Apr 17, 2012 |
| Priority date | — |
| Expiry date | Jul 10, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/083
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.