Which common use case of cryptographic concepts involves ensuring that a user cannot deny an action they performed?
Supporting non-repudiation
Supporting confidentiality
Supporting authentication
Supporting obfuscation
Non-repudiation binds an action or message to a specific identity so the individual cannot later repudiate (deny) having performed it. Digital signatures, created with the sender's private key and verifiable with the corresponding public key, are the standard cryptographic method used to achieve this property.
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