Cryptography comes from a Greek words for “Secret Writing”. It is
the use of math for information security. This includes data integrity,
confidentiality, entity authentication and data origin authentication. To
establish a shared secret when other people (eavesdroppers) are listening.
It is a Science of hiding meaning of communication.
The process of Converting Plain Text into Cipher
Text is called Encryption.
The process of converting Cipher Text
into Plain Text is called Decryption.
1. Cryptography— Study
of encryption principles and methods.
2. Plain Text — Original Messages.
3. Cipher Text —coded messages.
— Convert plain text into coded text.
5. Decrypt— Convert Cipher text into Plain Text.