cryptography
/krɪpˈtɒɡ.rə.fi/ IELTSAcademic
noun
The study and practice of hiding information so only the right people can read it. It is used to protect messages, passwords, and online data.
- Cryptography protects online messages.
- She studied cryptography at university.
- Banks use cryptography to secure data.
Adinary Nuance
Cryptography is the broad field of making information secret or secure. It is more technical than secrecy, and more specific than encryption. Use cryptography when you mean the whole subject, not just one coded message. Encryption is one method inside cryptography.
In other languages
- Vietnamese
- mật mã học
- Spanish
- criptografía
- Chinese
- 密码学
- Japanese
- 暗号学
- Korean
- 암호학
Etymology
From Greek krypto- meaning "hidden" and -graphy meaning "writing". The word entered English in the 17th century.
Common phrases
cryptography keymodern cryptographypublic-key cryptographycryptography system
Synonyms
Related words
Frequently asked questions
- Is cryptography the same as encryption?
- No. Encryption is one part of cryptography. Cryptography is the wider field that includes encryption and decryption.
- Is cryptography an academic word?
- Yes, it is common in academic, technical, and business writing. You may also see it in news about security and technology.
- How do I use cryptography in a sentence?
- You can say, "Cryptography helps protect sensitive information." It often appears with words like data, security, and encryption.