An organization wants to implement a cryptographic solution that allows a user to prove they sent a message and prevents them from denying it later. Which technology provides this capability?

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B. Digital signature. A digital signature uses asymmetric cryptography where the sender signs a message with their private key. The recipient can verify the signature with the sender's public key, confirming the sender's identity and providing non-repudiation — the sender cannot later deny having signed the message.

An organization wants to implement a cryptographic solution that allows a user to prove they sent a message and prevents them from denying it later. Which technology provides this capability?

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