Encryption and decryption system and method with content analysis provision
US6393568B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1997 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Oct 23, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/562
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A computer based encryption and decryption system and method provides content analysis through a content inspection mechanism, such as detection of a computer virus using a virus detection algorithm based on determining whether digital input information is encrypted. The content inspection mechanism analyzes decrypted content for such things as virus patterns, keywords, unknown program format, or any other content based criteria. The system generates a decryption request to decrypt encrypted digital input information prior to applying content analysis, such as virus detection. In response to the decryption request, the system decrypts the encrypted information prior to content analysis such as virus detection and applies a content analysis application, such as a virus detection algorithm, to the decrypted data If desired, when the decryption requires access to cryptographic keys which the decryptor does not have immediate access to, keys may be acquired from a controlled key repository through use of key release agent methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.