Who is the father of cryptography?

One Leon Battista Alberti was known as “The Father of Western Cryptology,” most notably due to his development of polyalphabetic substitution. His method was to use two copper disks that fit together.

When was cryptography used in history?

1900 BC
The first known evidence of the use of cryptography (in some form) was found in an inscription carved around 1900 BC, in the main chamber of the tomb of the nobleman Khnumhotep II, in Egypt. The scribe used some unusual hieroglyphic symbols here and there in place of more ordinary ones.

Who first used cryptography?

The first recorded use of cryptography for correspondence was by the Spartans, who as early as 400 bc employed a cipher device called the scytale for secret communication between military commanders.

What is cryptography short?

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.

Why is cryptography important?

Cryptography is one of the most important tools for building secure systems. Through the proper use of cryptography, one can ensure the confidentiality of data, protect data from unauthorized modification, and authenticate the source of data. Cryptography can also enable many other security goals as well.

Why was cryptography invented?

Human being from ages had two inherent needs − (a) to communicate and share information and (b) to communicate selectively. These two needs gave rise to the art of coding the messages in such a way that only the intended people could have access to the information.

What are types of cryptography?

Cryptography can be broken down into three different types:

  • Secret Key Cryptography.
  • Public Key Cryptography.
  • Hash Functions.

Why is cryptography used?

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).

What are the 2 types of cryptography?

How cryptography is used in real 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.