What is the real meaning of cryptography?

Cryptography is the study of secure communications techniques that allow only the sender and intended recipient of a message to view its contents. The term is derived from the Greek word kryptos, which means hidden.

What is cryptography in SIC?

Definition: Cryptography is associated with the process of converting ordinary plain text into unintelligible text and vice-versa. It is a method of storing and transmitting data in a particular form so that only those for whom it is intended can read and process it.

What is the main idea of cryptography?

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).

Why do we need cryptography?

As the foundation of modern security systems, cryptography is used to secure transactions and communications, safeguard personal identifiable information (PII) and other confidential data, authenticate identity, prevent document tampering, and establish trust between servers.

How is cryptography used in everyday life?

‘Cryptography in everyday life’ contains a range of situations where the use of cryptography facilitates the provision of a secure service: cash withdrawal from an ATM, Pay TV, email and file storage using Pretty Good Privacy (PGP) freeware, secure web browsing, and use of a GSM mobile phone.

How hard is cryptography?

Cryptography is not hard to learn if you have a background in mathematics or computer science, since it relies heavily on the principles from these subject areas. People without a background in mathematics or computer science may struggle with learning cryptography.

How is cryptography used today?

Why is cryptography important today?

What are the benefits of cryptography?

Cryptography – Benefits

  • Confidentiality − Encryption technique can guard the information and communication from unauthorized revelation and access of information.
  • Authentication − The cryptographic techniques such as MAC and digital signatures can protect information against spoofing and forgeries.