How to use ASP.NET Core for Creating and Verifying Digital Signatures on Documents? (2024)

Document security is paramount in today’s digital world. Ensuring the authenticity and integrity of digital documents is crucial for trust and security. One of the key tools for achieving this is digital signatures.

In this article, we’ll explore how ASP.NET Core can be leveraged to create and verify digital signatures, enhancing document security.

Digital signatures are cryptographic techniques used to verify the authenticity and integrity of a digital document or message. A digital signature is essentially a mathematical representation of a document that is generated using the private key of the signer. This signature can be verified using the corresponding public key, ensuring that the document has not been tampered with and was indeed signed by the claimed entity.

Before diving into ASP.NET Core, let’s understand the key components of digital signatures:

1. Private Key: The signer uses their private key to create the digital signature. This key should be kept secret and should never be shared.
2. Public Key: The recipient uses the public key associated with the private key to verify the signature. Unlike the private key, the public key can be freely shared.
3. Hash Function: A hash…