Public key cryptography 

In 1976, Whitfield Diffie and Martin Hellman created public key cryptography system, it was most innovative method for encryption and decryption still working till now. Public key encryption is applied form of secret-sharing principle that involve dual share of decryption key. Public key encryption came to avoid doubled keys and repeated pairs among many users and data publishers. The core of public key cryptography is to build a dual form of data protection but in simple cipher system that easy to decode and easier to be identified by determined users. In order to understand full work procedures; public key method is form from public key and private key. It is axiomatic that private key will stay secretly with one intended user who wants to remove the cipher system and get the data in plaintext form. While the public key shared at the same time with different participants. Here as a hint to avoid doubling identification keys among users while who want to get the data must enumerate the private key to decode and remove whole cipher system construction.

In some books known as a key pairs; because they used together in encryption and decryption operations while impossible to work separately. They must aggregated together to get certain data forms and moreover; at the same time. This method achieved two form of data protection; first keep data restricted without private keys involvement and decrease users steps to get their demands. The functionality of both keys is differently for each key; it means without other key impossible to get function. The algorithms of both keys designed to be one way operation, never reversed to identify other key even. So, pair keys never be identified from each other; thus no one knows and feel the difference between public and private key. Because of strong relationship between public and private key; it is impossible to the same person to use or even define other key. for instance; let someone use a public key to encode plain text to ciphertext and send it to someone else and receiver must use private key in order to get this text in plain form again. Which means no one can use the public key again to do the even same encryption later for the same text. Only must be private key in this step which has only one user on other platform to get the text in reading form.

When the data users want to convert same text to public key implementations to produce ciphertext again; that will not work because the whole process never repeated over again on the same text. Exactly as in X-files movies; you get the information and then body of information must be fired and disappeared forever. Is it not wonderful? I guess it is particularly with sensitive kind of data. In our civil life decoding files already end once you got them; they automatically cut the link with data transfer protocols and whole volume load on private device. It means you are totally free to fire the received decoded data if you do not need them anymore. Full health J