Provisioning Token for Secure Digital Document Issuance
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Solution Overview
Problem
Existing methods fail to provide digital documents and their copies in a cryptographically secure manner, particularly for mobile devices, lacking secure authorization and linkage mechanisms.
Innovation Solution
A method for generating a provisioning token that cryptographically secures the issuance of digital document copies by using a signed data record with hash values and salt values, ensuring authorization and linkage to a terminal device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If digital documents are provided for mobile devices, then accessibility and convenience are improved, but cryptographic security and authorization control deteriorate
Solution Approach 1:
The provisioning token is segmented into multiple components: a data record containing hashed document identifiers and salt values, and a digital signature. This segmentation allows the token to be verified without exposing the actual document content or cryptographic keys, thereby maintaining security while enabling widespread access.
Solution Approach 2:
The provisioning token acts as an intermediary credential that mediates between the document holder and the document verification system. Instead of directly sharing documents or private keys, users exchange provisioning tokens that contain verified document references, enabling secure third-party verification without compromising cryptographic security.
2Adaptability or versatility
If digital document copies are issued to multiple users, then accessibility is improved, but control over unauthorized access deteriorates
Solution Approach 1:
The system performs preliminary actions by generating provisioning tokens in advance that contain pre-verified document identifiers and cryptographic proofs. These tokens are issued with built-in authorization constraints, allowing multiple users to access documents legally while preventing unauthorized access through cryptographic verification of the token's validity and scope.
3Reliability
If cryptographic verification is implemented for document issuance, then security is improved, but system complexity deteriorates
Solution Approach 1:
The complex cryptographic verification logic is extracted from the mobile devices and centralized in the provisioning authority's servers. Mobile devices only need to store and present provisioning tokens, while the complex verification of document identifiers, hash values, and digital signatures is performed remotely by the authority, reducing device complexity while maintaining high security.
Data Source
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AI summary
The invention relates to a method for generating a digital provisioning token (170) by an issuing service. The provisioning token (170) entitles the holder to receive a first combination of a plurality of digital copies (176) to be issued, a plurality of digital documents (172) to be issued, with an end device (150, 151), and to cryptographically link the digital copies (176) to be issued to the end device (150, 151) during the issuance process.The procedure includes receiving a creation request to create the provisioning token (170) via a server (100) of the issuer service, identifying the requester using one of the issued digital documents (172) or the majority of issued digital documents (172), creating the requested provisioning token (170) in the form of a signed data record (602), and sending the provisioning token (170) to the identified requester.