People constantly have certain information that seek to give it to someone but don’t want that everyone has knowledge of such information and to eventual inconveniences that may occur with the delivery of the information and which can have as a consequence that other different people that should receive it are aware of such information, people have devised means to make this information can not be known but by the person who was to receive it and one media most safe for the exchange of information in a secure manner is Cryptography and the different means that come with it, so with cryptography information has great security and can only be read by the person to whom the message is addressed. So Cryptography allows information made an appearance as to be unintelligible for anyone and that only the person to which it is addressed information has the ability to understand the meaning of the message sent with Cryptography. Speaking in a manner more technique and It specifies, would be an art or science to encrypt and decrypt information, using different techniques that enable the exchange of messages to be more secure, since information which was the subject of cryptography in the aspect of encrypting, may only be decrypted by the person to whom is addressed message, such manea Cryptography it would make hidden writing by the sender and subsequently understand such writing thanks to a few knowledge determined by the recipient. Having some knowledge about what is cryptography, is of great importance clarified that the term can encompass a greater concept which encloses everything related to cryptography and encryption processes and decryption and cryptology, which makes relationship both Cryptography and cryptanalysis, term that it refers to the different methods to break the texts encrypted in the absence of keys for the information that is in the messages. As I was mentioned in previous paragraphs cryptography, is a method for delivering information of vital importance and safely, and thinking about this was how the birth of this art, since that information was of great importance in the development of the military campaigns in the past when the wars between various peoples, were presented was, so constant mind should send information to distant places, therefore he was sent with a Messenger and to avoid the risk of enemies to obtain information by intercepting the Messenger, messages were encrypted and it was impossible to be able to decrypt the information. The trend has made use of cryptography was widely used in societies representative of the past, like the Roman Empire, the ancient Greeks, which made great development of cryptography and this art was extending and improving with the passage of time. But it would be in Germany with the presence of the second world war where the greater development of cryptography would be given the importance that would have information on the development of this great military confrontation. Original author and article source