These are a few questions that can be answered by Cryptography. As the Internet and other forms of electronic communication become more prevalent, electronic security is becoming increasingly important. Cryptography is used to protect e-mail messages, credit card information, and corporate data. Encrypted messages can sometimes be broken by cryptanalysis, also called codebreaking, although modern cryptography techniques are virtually unbreakable.
Cryptography is the enciphering and deciphering of messages.
While cryptosystem is the method of encrypting and decrypting data. Encryption is the process of changing data into a form that can be read only by the intended receiver. While decryption is the process of decoding data that has been encrypted intoa secret format. To decipher the message, the receiver of the encrypted data must have the proper decryption key. In traditional encryption schemes, the sender and the receiver use the same key to encrypt and decrypt data.