Definition of «cryptography»

Cryptography is a branch of mathematics and computer science that deals with secure communication in the presence of third parties. It involves converting plain text into an encoded form, known as ciphertext, which can only be read by someone who has access to the appropriate key or password. The process of encrypting messages using cryptographic algorithms is called encryption, while decrypting them is called decryption. Cryptography is used in various applications such as secure online transactions, data protection, and communication between secret agents. It plays a crucial role in ensuring the security and privacy of digital information.

Usage examples

Cryptography is essential for protecting sensitive data such as online banking transactions, where encryption algorithms are used to secure the communication between a user's device and the bank's server.
Governments around the world employ cryptography to secure classified information and maintain national security.
Cryptography techniques are used to secure data transmitted over the internet, such as HTTPS (Hypertext Transfer Protocol Secure), which encrypts information exchanged between a website and a user's browser.
Digital signatures, based on cryptography, ensure the authenticity and integrity of digital documents, making them tamper-proof and verifiable.
Virtual private networks (VPNs) use cryptography to establish secure tunnels, encrypting the data that travels between a user's device and the VPN server, providing privacy and anonymity.
Blockchain technology relies heavily on cryptography to maintain secure and transparent transactions in cryptocurrencies like Bitcoin.
Cryptanalysis, a field within cryptography, focuses on breaking cryptographic algorithms and identifying vulnerabilities in encryption schemes.

Phrases with «cryptography»

Sentences with «cryptography»

Prior uncertainty about the secret rules of cryptography in Thailand, in particular concerning the ICO, led to the fact that the exchange of assets of Thai Digital (TDAX) stopped the ICO in February to wait for the publication of the regulatory framework of the Thai Commission on Securities and exchange Commission (SEC). (bit-coin-news.info)
A bitcoin expert said the scandal highlighted the risks of companies using cryptography for their ledgers. (fortune.com)
An ultra-high security scheme that could one day get quantum cryptography using Quantum Key Distribution into mobile devices has been developed and demonstrated by researchers from the University of Bristol's Centre for Quantum Photonics (CQP) in collaboration with Nokia. (sciencedaily.com)
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Definition of «cryptography»

Usage examples

Phrases with «cryptography»

Sentences with «cryptography»

See also