{"id":2414,"date":"2017-08-28T09:37:43","date_gmt":"2017-08-28T09:37:43","guid":{"rendered":"https:\/\/signdesk.com\/?p=2414"},"modified":"2025-09-17T03:52:12","modified_gmt":"2025-09-17T09:22:12","slug":"digital-signature-aadhaar-based-electronic-signature","status":"publish","type":"post","link":"https:\/\/melento.ai\/en-in\/blog\/digital-signature-aadhaar-based-electronic-signature","title":{"rendered":"Online Digital Signature And Aadhaar-Based Electronic Signature"},"content":{"rendered":"

\"Digital<\/p>\n

An online digital signature can be viewed as a fingerprint or a coded message that is unique to both the document being signed and the signer. It binds both of them together.<\/p>\n

If we recall, a handwritten signature also does the same thing. However, in the digital signature\u2019s case, this is being done electronically with no paperwork involved.<\/p>\n

Instead of using pen and paper, a digital signature uses digital keys, also called public-key cryptography.<\/a><\/p>\n

An online digital signature is considered equal to a handwritten signature.<\/p>\n

Just as a person\u2019s identity is attached when signing a paper document, the digital signature too acts as a binding commitment and attaches the identity of the person signing it to the document.<\/p>\n

Compared to a handwritten signature, it is much more difficult to forge a digital signature, provided the keys used to create the digital signature are kept secure.<\/p>\n

The real value is in saving time and avoiding the paper, and keeping your data electronic.<\/p>\n

How does Online Digital Signature work?<\/b><\/span><\/h2>\n

Online Digital signature is based on cryptographic technology. One can generate two mathematically linked keys using an algorithm. These keys are called private and public keys.<\/p>\n

To create an online digital signature, signing software creates something called a hash of the electronic data to be signed. This hash is then encrypted using the private key.<\/p>\n

The online digital signature consists of this encrypted hash, a hashing algorithm along with some other details.<\/p>\n

You may notice that it is the hash that is encrypted instead of the entire document.<\/p>\n

The reason for this is that a hash function by its nature gives fixed-length value output for any arbitrary input, which is usually much shorter.<\/p>\n

So instead of encrypting a random length document, it is considered easier to encrypt the fixed-length hash.<\/p>\n

This saves time since hashing is much faster than signing.<\/p>\n

What Makes Online Digital Signature Secures?<\/b><\/span><\/h2>\n

The main feature that makes online digital signature unique than a handwritten signature is that the hash of any data is unique.<\/p>\n

This inherent feature of hash makes validating the integrity of the data very easy and secure.<\/p>\n

This can be done by decrypting it using the signer\u2019s public key.<\/span><\/p>\n

If the decrypted hash matches another hash of the same document, it proves that the data hasn\u2019t been tampered with, since it\u2019s signed.<\/p>\n

If the two hashes do not match, the data has either been tampered with in some way, or the signature was affixed using a private key that doesn\u2019t correspond to the public key presented by the signer.<\/p>\n

In either case, the fraud has been detected at a very early stage.<\/p>\n

Issues Involved In The Digital Signing Process<\/b><\/span><\/h2>\n

There are three major issues concerning digital document signing:<\/p>\n