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  • ISO
    ISO/IEC 23264-2:2024 Information security - Redaction of authentic data - Part 2: Redactable signature schemes based on asymmetric mechanisms
    Edition: 2024
    $572.69
    / user per year

Content Description

This document specifies cryptographic mechanisms to redact authentic data. The mechanisms described in this document offer different combinations of the security properties defined and described in ISO/IEC 23264-1. For all mechanisms, this document describes the processes for key generation, generating the redactable attestation, carrying out redactions and verifying redactable attestations.

This document contains mechanisms that are based on asymmetric cryptography using three related transformations:

¾      a public transformation defined by a verification key (verification process for verifying a redactable attestation),

¾      a private transformation defined by a private attestation key (redactable attestation process for generating a redactable attestation), and

¾      a third transformation defined by the redaction key (redaction process) allowing to redact authentic information within the constraints set forth during generation of the attestation such that redacted information cannot be reconstructed. 

This document contains mechanisms which, after a successful redaction, allow the attestation to remain verifiable using the verification transformation and attest that non-redacted fields of the attested message are unmodified. This document further details that the three transformations have the property whereby it is computationally infeasible to derive the private attestation transformation, given the redaction and or the verification transformation and key(s).



About ISO

ISO, the International Organization for Standardization, brings global experts together to agree on the best way of doing things – for anything from making a product to managing a process. As one of the oldest non-governmental international organizations, ISO has enabled trade and cooperation between people and companies all over the world since 1946. The International Standards published by ISO serve to make lives easier, safer and better.
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