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Method and a system for secure execution of workflow tasks in a distributed workflow management system within a decentralized network system
Method and a system for secure execution of workflow tasks in a distributed workflow management system within a decentralized network system
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机译:用于在分散式网络系统内的分布式工作流管理系统中安全执行工作流任务的方法和系统
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摘要
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.
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机译:提供了一种方法,系统和发起服务器,用于在具有多个服务器的分散网络系统中的分布式工作流管理系统中安全地执行要根据给定执行模式执行的工作流的工作流任务(b < Sub> 0 Sub>,b 1 Sub>,...,b n Sub>)包括至少一个启动器服务器和至少多个服务器组中的多个服务器组服务器。每个组都满足顶点的策略(pol i Sub>),因此知道相应的策略密钥对,包括策略私钥(SK poli Sub>)和策略公钥。 (PK poli Sub>)。每个顶点表示将根据执行模式执行的一组工作流任务,并且被分配了包括顶点私钥和顶点公钥的顶点键对。顶点私钥和策略公钥在第一洋葱结构中联合加密,第一洋葱结构由表示执行模式的多个洋葱层构成,这些洋葱层定义了一系列顶点,因此每个层都可以通过使用恰好一个顶点的策略私钥,从而揭示了相应的顶点私钥。
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