A STUDY ON CRYPTOGRAPHY AND DIGITAL SIGNATURE ISSUES AND CERTIFIED DIGITAL SIGNATURE

Computer Engineering

In this paper we are study on cryptography and digital signature issues and certified digital signature. Electronic commerce is taking place in an increasing manner via the internet, which is becoming the fastest growing communication channel this century. As has been stated, public key encryption techniques ensure financial institutions that their messages are secure and that other transacting parties with them are authenticated. Using this technology senders and receivers of electronic messages each possess two keys, one of which is never shared with anybody and the other of which is shared with everyone. Public key cryptosystems are one of the most essential parts of modern communication frameworks. Traditional public key cryptography requires each party which wants to send an encrypted message or a signed document should generate its own public key/private key pair. However the public of an entity needs to be authenticated by means of digital certificate which is provided by a recognized certification authority. However this method of attaching a certificate to authenticate a public key incurs unnecessary bandwidth and computation overhead for a wireless communication device that has a greater limitation in terms of computational power and speed of data transmission.

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.