Crypography

Cryptography is way you can keep information secure. A person who does not know the

method used to change the information to keep it secure cannot copy the method used or reverse the change. The basic components of cryptographic systems are used to encipher (scramble) information so that it is difficult to determine the meaning without the appropriate key or key(s) to decipher (unscramble) the information. The components include cryptographic algorithms (mathematical functions) for enciphering or deciphering information and keys.

Symmetric and asymmetric are two examples of cryptographic systems. Symmetric systems use the same key to encipher and decipher. Asymmetric systems

generate and use different keys to encipher and decipher a secure key pair. With this key pair, consisting of a public key and a private key, only one key can decipher what the other enciphers.

Merely knowing one key does not make it very likely that someone will be able to figure out the other key. Asymmetric key pairs are used in creating digital signatures and transporting symmetric keys.

In the past, most encryption systems only used symmetric cryptography. The problem with