Cryptology

A code is a system of symbols, letters, words, or signals that are used instead of ordinary words and numbers to send messages or store information. A code is used to keep the message short or to keep it secret. Codes and ciphers are forms of secret communication. A code replaces words, phrases, or sentences with groups of letters or numbers, while a cipher rearranges letters or uses substitutes to disguise the message. This process is called encryption or enciphering. The science that studies such secret communication is called cryptology.
How is cryptology used?
Secret writing has been used for about as long as writing has existed. Codes have been used throughout history whenever people wanted to keep messages private. Cryptology has long been used by governments, the military, businesses, and organizations to protect their messages. Today, encryption is used to protect the storage of data and transactions between computers. In ancient times when messages were carried by foot for miles, kings and rulers would encrypt the letters they would send to allies. This helped to protect the secrecy of the message in case they were stolen. When the telegraph was invented, “Morse Code” was used to send understandable messages via sound patterns. Today, computer users encrypt documents, network space, and e-mail messages as a way to protect the confidentiality of their messages. The new types of encryption are very advanced , and sometimes complicated .... but the basic skill remains true to the ancient methods!