Cryptography is the science of using mathematics to encrypt and decrypt data.
Cryp- tography enables you to store sensitive information or transmit it across insecure net- works (like the Internet) so that it cannot be read by anyone except the intended recipient.
Cryptography is the process of hiding or coding information so that only the person a message was intended for can read it.
The art of cryptography has been used to code messages for thousands of years and continues to be used in bank cards, computer passwords, and ecommerce.
Definition.
Cryptography provides for secure communication in the presence of malicious third-parties—known as adversaries.
Encryption uses an algorithm and a key to transform an input (i.e., plaintext) into an encrypted output (i.e., ciphertext).