What mechanisms does UAP Document 301 require to ensure document integrity?

What mechanisms does UAP Document 301 require to ensure document integrity?

• A. Only password protection is used.
• B. Watermarks alone guarantee integrity.
• C. Use digital signatures, hashes, watermarks, and tamper-evident controls to verify integrity.
• D. Integrity is not monitored.

Answer: (C)

Ensuring document integrity relies on using multiple layers that can detect changes, verify origin, and provide an auditable trail. Digital signatures authenticate who signed the document and ensure non-repudiation, so recipients can confirm the signer and that the content hasn’t been altered since signing. Hashes create a compact fingerprint of the document; if any part of the content changes, the hash changes, making tampering detectable during verification. Watermarks add a visible or embedded indicator of authenticity or ownership, helping deter and reveal tampering, especially in copies. Tamper-evident controls—such as secure seals, detailed audit logs, and clear versioning—provide evidence of any access or modifications and establish accountability. Using these together gives a robust guarantee: you can verify who created the document, that its content remains unchanged, and that any attempt to alter or replace it would be detectable. Password protection alone guards access but does not prove integrity, and watermarks by themselves can be bypassed or removed, so they aren’t sufficient without the cryptographic and tamper-evident measures.

Ensuring document integrity relies on using multiple layers that can detect changes, verify origin, and provide an auditable trail. Digital signatures authenticate who signed the document and ensure non-repudiation, so recipients can confirm the signer and that the content hasn’t been altered since signing. Hashes create a compact fingerprint of the document; if any part of the content changes, the hash changes, making tampering detectable during verification. Watermarks add a visible or embedded indicator of authenticity or ownership, helping deter and reveal tampering, especially in copies. Tamper-evident controls—such as secure seals, detailed audit logs, and clear versioning—provide evidence of any access or modifications and establish accountability.

Using these together gives a robust guarantee: you can verify who created the document, that its content remains unchanged, and that any attempt to alter or replace it would be detectable. Password protection alone guards access but does not prove integrity, and watermarks by themselves can be bypassed or removed, so they aren’t sufficient without the cryptographic and tamper-evident measures.