The University of SydneyPage 26Conversion of messages from a comprehensible form into an incomprehensible one and back again at the other end, rendering it unreadable by interceptors or eavesdroppers without secret knowledgeCryptographyA definition of Cryptography…Cryptographyuses the processes of Encryptionand Decryption. The system it uses is called CryptosystemCryptosystem also uses Encryption Algorithm–which is a set of rules for encryption and decryption