A digital signature is a cryptographic technique used to verify the authenticity and integrity of electronic documents, messages, or transactions. It provides a way to ensure that the information transmitted or stored electronically has not been tampered with and that it originates from the expected sender. Unlike a traditional physical signature, a digital signature is created using a combination of public key cryptography and hashing algorithms. Here’s how the process typically works:
Digital signatures provide several benefits:
Authentication: Digital signatures provide proof of the identity of the sender, ensuring that the document or message is coming from the expected source.
Integrity: Digital signatures ensure that the content of the document or message has not been tampered with since it was signed. Any modifications to the signed data would result in an invalid signature.
Non-Repudiation: Digital signatures offer non-repudiation, meaning the sender cannot deny having sent the document or message once it has been digitally signed.
Types of Digital Signature
Class-III Signing
Class-III Signing & Encryption
