Binding by hash
US7124408B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2000 |
| Grant date | Oct 17, 2006 |
| Priority date | — |
| Expiry date | Apr 5, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2145
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method is provided for providing security to components or assemblies employed by application programs during runtime. Assemblies carry version information that can be used to enforce the versioning rules described by the application program. At runtime, version numbers requested by the application programs are compared with those version numbers of the assemblies that are actually found. In addition to comparing version numbers, the present invention offers a stricter form of version checking based on cryptographic hashes. An assembly is provided with module information that contains a list of the files that make up the assembly. Part of the information recorded about each module is a hash of the module's contents at the time the manifest was built. An assembly referencing another assembly computes the hash of the manifest of the referenced assembly. An assembly manifest may include dependency information, which is information about other assemblies that the assembly depends on or references. Part of the information stored as part of an assembly reference or manifest is a hash of the dependent assembly's manifest.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.