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What Is Digital Signature? Why Is It Important?
Digital Biometric Signature

What Is Digital Signature? Why Is It Important?

Digital signatures provide an added layer of security for digital documents by verifying the authenticity of the signature and ensuring that the document has not been tampered with.

Sura Aydin
January 25, 2023

Digitalization of Signatures - How do digital signatures work?

Digital signatures offer authenticity and integrity.

A public-key system enables users to create a "public/private" key pair, keep the private key confidential, and publish or share the public key with others. These two keys have a unique connection.

Person A can use their own secret key to "sign" documents (generate a unique output from the document and person A's key) if they transmit person B their own public key (or tell person B where to get it from a website). This result, known as the digital signature, is exclusive to person A's key and that particular document.

When person B receives the document with the digital signature attached and uses person A's public key, person A can submit all three to a signature-verification algorithm, which will only respond "GOOD" if all three of the following three requirements are satisfied:

  • The document has not changed
  • The digital signature has not changed
  • The document's digital signature was created using person A’s secret key on that same document.

There is no proof that person A signed the document, no matter what someone attempts to convince person B of in the form of a purported document and a purported digital signature if person B uses them with person A's public key and the verification algorithm rejects them.

Put another way, no “bad guy” can try to claim person A signed a document that person A did not, either by tampering with a document person A did sign (false integrity), or by finding a way to craft a signature that will verify with person A's public key (false authentication.)

The mathematical link between the keys enables the usage of the public/private key scheme for secrecy. Anybody may use it to encrypt a message to me if they have access to person A's public key. Only those with access to that public key may decode messages. The communication can only be decrypted by the owner of the matching secret key, which is me.

However, person A will only know who encrypted and delivered the message if they get it and decode it. So many individuals will sign the message after it has been encrypted (using person A's public key) (with their secret key). Person A uses the sender's public key to identify the sender of the message after receiving it and then uses Person A's secret key to decode the message.

Why do you need to shift to a digital signature?

Let's look at why it is a good idea to start shifting to digital biometric signature solutions:

1. The digital biometric signature is reliable.

Digital biometric signatures are recognized provided that the signed document is not altered thereafter. By signing the document, you attest that you accept its terms, are accountable for its accuracy, and ensure that it hasn't undergone any alterations.

A blockchain signature file has a special electronic identification linked to it called a digital biometric signature. You need your private and public keys in order to use a digital biometric signature on a document. Because they cannot be faked or altered in any way, digital biometric signatures are more trustworthy than conventional paper-based ones.

2. The digital biometric signature is not dependent on location and time.

Today, anybody may perform any task remotely. Digital biometric signatures have made it feasible to sign papers from a distance as well. The best approach is always to accomplish a straightforward signature or data gathering task without physically coming together. Contracts, legal papers, and bank statements are just a few examples of the documents that can employ digital biometric signatures. They can be signed while a person is sitting in a coffee shop or is going to a different continent, it doesn't matter where they are located.

3. The digital biometric signature is fast and cost-effective.

They save the time and effort required for manually printing, faxing, scanning, and signing each document. It takes a lot of effort to maintain a straightforward operating procedure with all these hardcopy submissions. You eliminate the need for a simple signature, which will hasten the resolution of issues.

4. The digital biometric signature reduces paper use and helps you go paperless.

Digital biometric signatures are frequently underutilized as a tool for efficiency. However, you may utilize them to cut down on paperwork, mistakes, and processing time, which will significantly slash expenses for buyers and sellers.

The future of offices is paperless. We don't need to sacrifice the environment in order to have tangible copies of papers. As we become more conscious of the environment and sustainability, digital biometric signatures are becoming more and more widespread in our culture. Paperwork and paperwork are produced during the faxing, printing, or filing procedures. There is a greener answer for it because it pollutes the environment.

Sura Aydin

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