Location privacy for internet protocol networks using cryptographically protected prefixes
US7916739B2 · kind B2 · utility
17Cited by
14References
61Claims
0Family size
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Key dates
| Filing date | May 20, 2004 |
| Grant date | Mar 29, 2011 |
| Priority date | — |
| Expiry date | Jul 7, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/166
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Cryptographically Protected Prefixes (“CPPs”) are used to create IP addresses, preventing any correlation between a CPP IP address and a host's geographic location. An IP address is subdivided into address prefixes of multiple segments. Each segment is encrypted with a cryptographic key known only to a subset of routers in the access network domain (or Privacy Domain). Therefore, each router obtains the information it needs to forward a packet of information, but not any additional information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.