Message encryption system
US9992179B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2016 |
| Grant date | Jun 5, 2018 |
| Priority date | — |
| Expiry date | Jul 10, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/126
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system includes a plurality of mail encryption gateways and a router. Each mail encryption gateway encrypts email according to an encryption policy of a customer. The router stores a plurality of sender policy framework (SPF) records. The router also receives an email and compares a source IP address of the email with the plurality of SPF records. The router determines that the source IP address corresponds to an SPF record of the plurality of SPF records and in response to that determination, determines that a Simple Mail Transfer Protocol From Field of the email comprises a domain of a cloud provider corresponding to the SPF record. In response to that determination, the router determines that a Multipurpose Internet Mail Extension From Field of the email comprises a domain of a customer and in response to that determination, routes the email to a mail encryption gateway.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.