Data redaction refers to the process of obscuring or removing sensitive information from a record while preserving the overall structure and integrity of the data. On a blockchain, this means making specific data unreadable or inaccessible without deleting the entire transaction. It typically employs cryptographic methods to hide portions of a transaction or document. This technique allows for selective privacy within a public ledger.
Context
Data redaction is a critical topic for businesses seeking to use blockchain while adhering to privacy regulations and protecting proprietary information. Zero-knowledge proofs and chameleon hashes are technologies often cited for enabling such capabilities. The implementation of effective redaction methods helps balance transparency with the need for confidentiality in various blockchain applications.
Redactable blockchains introduce controlled data modification through cryptographic primitives like chameleon hashes, bridging immutability with critical regulatory compliance and operational flexibility.
This research surveys how cryptographic mechanisms, primarily chameleon hash functions, enable auditable data modification within blockchains, balancing immutability with regulatory needs.
Redactable blockchains introduce controlled, auditable data modification via chameleon hashes, resolving immutability conflicts for regulatory compliance and dynamic ledger management.
Merklized transactions redefine blockchain data handling, allowing granular verification and redaction for enhanced privacy and compliance without altering core immutability.
This research introduces controlled data modification into blockchains, leveraging cryptographic primitives like chameleon hashes to reconcile immutability with regulatory compliance and dynamic data needs.
This research introduces redactable blockchains, leveraging chameleon hash functions to enable controlled, auditable data modification while preserving ledger integrity for regulatory compliance and error correction.
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