A digital signature is an electronic equivalent of a physical signature. Just like the way a signature in a paper authenticates the signer, the digital signature also confirms the authenticity of the owner. Besides, it ensures that integrity of the data and non-repudiation. Non-repudiation means that the sender cannot later deny that he did not send the message. So, if you have … [Read more...] about What is Digital Signature and How it Works?
The purpose of any cryptography is to ensure the confidentiality, authenticity, non-repudiation and integrity of the data. And all these goals are achieved with the use of cryptography keys. The 128 bit key is such a type of key that ensure all the intended objectives of using a crypto-system or cryptographic algorithm.it is the key which needs to be secret in order to keep … [Read more...] about What is 128 Bit Encryption?Why the Length is Important?