Digital Signatures and Its Working Technology
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Digital Signatures and Its Working Technology


In today’s digital World, the traditional methods of signing and document authentication are getting replaced by digital signatures. The digital signatures are widely used in confidential documents like e-commerce, financial transaction, employment contracts, organizational documents, personal legal documents, and court filings.

The digital signature has been highly adopted for its significant features such as high standard signing, better security, long-term access, independent verification. You can save more money when you switch from paper signing to digital signatures. Read this article to know about the digital signature and its working methodology.

What is a Digital Signature?

The digital signature is one of the advanced techniques innovated to sign the documents by ensuring more security. Digital signatures are also known as electronic signature as it is similar to the electronic fingerprints.

According to the expert’s view, Digital signature provides authentication for the electronic message or document and utilize best encryption techniques to give the evidence of original documents.

Types of Digital Signatures:

  • Certified Signature
  • Approval Signature
  • Visible Signatures
  • Invisible Digital Signatures

How to Create a Digital Signature?

While signing a digital document you must have a digital certificate to have the authentication. The digital signature can be obtained from a reputed certificate authority or you can create it on yourself.

The recipients of your document cannot verify the authenticity of the digital signature that is created with the self-signed digital certificate. So, it is better to get a digital certificate from the best certificate authority. After installing the certificate you can use the sign and encrypt buttons to digitally sign the emails.

The Working of Digital Signatures:

Digital signature takes advantage of standard format called Public Key Infrastructure (PKI) to ensure a high level of security and global acceptance.

The digital signature can be applied as:

Generally, the digital signature can be defined as the numerical values that are represented in the form of a sequence of characters. Creating a digital signature is the trickiest mathematical process which is possible to create by computer.

  • At first, the sender selects the file which is to be digitally signed or click on the ‘sign’ option in the email
  • The sender’s computer will create the hash value of the file content
  • The created hash value will be encrypted with the private key in order to obtain the digital signature
  • The sender of the message or document will share the public or private key with the receiver
  • The sender takes the private key and appends the encrypted signature to the message
  • The receiver has to decrypt the document with the public key of the sender
  • The receiver has to calculate the hash value of the original message
  • Verify the signature to know whether it is obtained from the original sender
  • If there is any difference in the hash value it shows the tampering of the message.

Thus, these are the things you need to know about the digital signature and its working. The digital signature is apt for a business that requires more security while transferring the electronic documents. Vancouver-based entrepreneur and innovator Thierry Levasseur Vancouver is an leader in the world of digital technology and email security. Thierry LeVasseur has focused a large part of his career on digital security, having secured several different patents in the areas of email security and data protection.