Two keys
A private key creates the signature and the corresponding public key verifies it. Verification helps authenticate signed data and detect alteration.
FinFly Explains / IT
What a digital signature is
This guide concerns cryptographic digital signatures, not an image of handwriting. The mechanism checks data rather than a page’s appearance.
Signing does not hide content
NIST distinguishes signatures from confidentiality protection. Hiding content requires separate measures; a signed file may remain readable.
What recipients should check
FinFly recommends using signature-verification software and checking exactly which file it verified. Preserve the signed original, not merely a screenshot or printout.
Technical scope
Verification does not replace assessment of signing authority or applicable legal requirements. NIST’s technical definition does not determine legal status in Azerbaijan.
Questions
Short answers
Does a valid signature prove the statements are true?
No. Integrity of signed data and truth of its statements are separate questions.
Method
Primary sources
The explainer is checked against these institutional and industry sources. Links open the original material.