Redactable signature schemes and sanitizable signature schemes are methods that permit modification of a given digital message and retain a valid signature. This can be applied to decentralized identity systems for delegating identity issuance and redacting sensitive information for privacy-preserving verification of identity. We propose implementing these protocols on a digital credential and compare them against other privacy-enhancing techniques to assess their suitability

翻译：可编辑签名方案与可净化签名方案允许对给定数字消息进行修改并保留有效签名。此技术可应用于去中心化身份系统，以实现身份颁发的委托操作及敏感信息的编辑，从而在身份验证过程中保护隐私。我们提出在数字凭证中实施这些协议，并将其与其他隐私增强技术进行比较，以评估其适用性。