Foundations of Blockchain

Digital signatures

So far, we have covered various different methods of encryption in the categories of symmetric and asymmetric cryptography. We also had a look at a few of the advantages of symmetric encryption techniques compared to asymmetric techniques. Thus, asymmetric cryptography is a rarely used encryption methodology. But the distinct design of asymmetrical keys makes it a suitable technique for applications other than encryption, and digital signature is one of them.

A digital signature is a method of providing proof of ownership of digital documents. Public-private key cryptography is widely used in the field of digital signatures due to their asymmetric key property. The owner can use the private key to sign a message or document, ...