The document introduces the concept of workflow signatures in interorganizational workflow systems to enhance business process compliance. These signatures ensure authenticity, protect data integrity, and serve as electronic evidence for auditing and regulatory compliance. A proposed workflow signature scheme utilizing hierarchical identity-based cryptography aims to dynamically control task permissions within workflows.

1. Impulse Technologies
Beacons U to World of technology
044-42133143, 98401 03301,9841091117 ieeeprojects@yahoo.com www.impulse.net.in
Workflow Signatures for Business Process Compliance
Abstract—
Interorganizational workflow systems play a fundamental role in business
partnerships. We introduce and investigate the concept of workflow signatures.
Not only can these signatures be used to ensure authenticity and protect integrity of
workflow data, but also to prove the sequence and logical relationships, such as
AND-join and AND-split, of a workflow. Hence, workflow signatures can be
electronic evidence useful for auditing that is proving compliance of business
processes against some regulatory requirements. Furthermore, signing keys can be
used to grant permissions to perform tasks. Since the signing keys are issued on-
the-fly, authorization to execute a task within a workflow can be controlled and
granted dynamically at runtime. In this paper, we propose a concrete workflow
signature scheme, which is based on hierarchical identity-based cryptography, to
meet security properties required by inter organizational workflows.
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