Digital Signature

Authenticity is required everywhere; authentication means to verify the identity of a sender. Authentication technique tries to verify that the message is coming from an authentic sender rather than from an imposter. Digital signature is a method device for the purpose of authentication of an object. It is based on public key encryption or decryption. Digital signature is similar to that of signing transaction documents when we deal with a bank.

To withdraw a large sum of money from a bank, you need to fill a withdrawal form and sign it and the bank keeps the signed form on record to show when a question about authorization is raised.

In network transactions, you cannot personally sign the request for withdrawal. However, an equivalent of an electronic or digital signature is created.

In Digital signature, a secret key encryption key is kept by the customer, while the corresponding public key is issued by the bank. The customer uses one public and one secret key while the bank uses one secret key and one public key.

Thus, Digital Signature is a technology used for protecting people from getting cheated on network transactions.

Originally posted 2008-07-03 00:01:22.