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Cryptography is the science of encoding a message into a form that is unreadable and making sure only the proper people are capable of decoding the message back into its original form. This is usually done by using an encryption algorithm and a decryption algorithm (these two are often the same) and very often a secret key. Some of the early cryptographic systems did not use a key but instead kept the algorithm itself secret. …

…to conduct safe, private conversations when dealing with foreign companies because they cannot use encrypted communications. Cryptography will prove to be important in the present and future by ensuring that credit card numbers stay secure over the Internet. Other things it does is prevent fraud, military actions are not compromised through bad radio security, and information exchanged among the White House, Pentagon, and other governmental agencies are not compromised by hostile nations. Bibliography Dont remember =(