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Digital signatures provide authenticity protection, integrity protection, and non-repudiation, but not confidentiality protection. The result of a cryptographic transformation of data that, when properly implemented, provides origin authentication, assurance of data integrity and signatory non-repudiation.

Authentication is about verifying that the user is who he claims to be. A digital signature is about protecting the integrity of certain data and asserting that the data originated from a certain user.

This can be done by requesting a government-issued ID or other official documents that verify their identity. If the signature is on a legal document, it may be necessary to have it notarized or witnessed by a third party. Signatures that have been altered or added to are not authentic.

Authentication is about verifying that the user is who he claims to be. A digital signature is about protecting the integrity of certain data and asserting that the data originated from a certain user.

Ans.: A digital signature is an authentication mechanism that allows the sender to attach an electronic code with the message in order to ensure its authenticity and integrity. This electronic code acts as the signature of the sender and, hence, is named digital signature.

Look for a reputable autograph authentication service, such as PSA/DNA or JSA, and have them examine the signature. They will be able to give you a professional opinion on whether or not the autograph is genuine.

One of the easiest ways to spot a autograph is to compare it to other autographs from the same player. Look for consistency in the way the player signs their name, including the size, slant, and any unique characteristics. If the autograph looks vastly different from others, it's likely a .