Method and a system for secure execution of workflow tasks in a distributed workflow management system within a decentralized network system
US9047490B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2008 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Sep 26, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/6209
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
There are provided a method, a system and an initiator server for a secure execution of workflow tasks of a workflow to be executed according to a given execution pattern in a distributed workflow management system within a decentralized network system with a plurality of servers (b0, b1, . . . , bn) including at least an initiator server and at least a number of groups of servers of the plurality of servers. Each group satisfies a policy (poli) of a vertex, and thus, knows a corresponding policy key pair including a policy private key (SKpoli) and a policy public key (PKpoli), respectively. Each vertex denotes a set of workflow tasks to be executed in accord with the execution pattern and is assigned a vertex key pair including a vertex private key and a vertex public key. The vertex private keys and the policy public keys are jointly encrypted within a first onion structure, the first onion structure being built up of a number of onion layers representing the execution pattern which defines a succession of vertices such that each layer is decryptable by using the policy private key of exactly one vertex thus revealing the corresponding vertex private key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.