Blockchain Event-Lock Encryption via Congress Threshold Signatures
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Solution Overview
Problem
Current blockchain technologies are limited in their ability to implement automated tasks and processes beyond cryptocurrency transactions, lacking the necessary security and versatility to harness the full potential of blockchain.
Innovation Solution
The formation of a congress on a blockchain network, secured through distributed generation of private key shares and a threshold signature scheme, allows for the secure control and transfer of digital assets, enabling more versatile applications such as event-lock encryption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional blockchain technologies are used for cryptocurrency transactions, then transaction security is maintained, but the ability to implement automated tasks and processes is limited
Solution Approach 1:
The patent segments the blockchain system into distinct functional components: a congress for governance and key management, a threshold signature scheme for secure operations, and event-lock encryption for automated task execution. This segmentation allows each component to specialize in specific functions while maintaining overall system security and versatility.
Solution Approach 2:
The patent introduces a congress as an intermediary body that manages cryptographic keys and authorizes operations. The threshold signature scheme acts as a mediator between the congress and automated tasks, enabling secure execution without requiring direct access to master keys. This intermediary structure enhances both versatility and security.
2Reliability
If distributed generation of private key shares is implemented, then security is enhanced, but device complexity increases
Solution Approach 1:
The private key is segmented into multiple shares distributed among congress members. Instead of managing a single complex master key, the system uses simplified individual key shares that can be combined through threshold signatures. This segmentation reduces the complexity burden on any single node while enhancing overall security.
Solution Approach 2:
The threshold signature scheme provides multi-functionality by enabling various operations (decryption, signature generation, task execution) through the same distributed key share mechanism. This universal approach simplifies key management across different functions while maintaining enhanced security.
3Adaptability or versatility
If event-lock encryption is used for automated operations, then versatility is improved, but the system complexity increases
Solution Approach 1:
The patent implements preliminary action by pre-establishing the congress, distributing key shares, and configuring event-lock encryption parameters before automated tasks execute. This setup phase handles the complexity once, allowing automated operations to run simpler during execution. The event triggers and decryption logic are prepared in advance, reducing runtime complexity.
Data Source
AI summary
A computer-implemented method includes encrypting a plaintext message to a cryptographic public key in accordance with an identity-based encryption scheme using at least a congress public key to generate an encrypted message, wherein the congress public key is associated with members of a congress, respective members of the congress having access to private key shares usable in a threshold decryption scheme in which at least a threshold of private key shares are sufficient to derive a decryption key through the combination of partial contributions to the decryption key on behalf of the congress, generating, using at least a cryptographic private key corresponding to the cryptographic public key, a digital signature over a first set of instructions to perform cryptographic operations upon an occurrence of an event; and broadcasting one or more transactions to a proof-of-work blockchain network, the one or more transactions comprising the encrypted message, the cryptographic public key.