Meanings and Origins of "Nonce"
Cryptography and Technology
- In cryptography, "nonce" stands for "number used once." It refers to a random or unique number generated for a specific purpose, typically to ensure that old communications cannot be reused in attacks (such as replay attacks). Nonces are crucial in securing digital transactions and protocols by guaranteeing that each session or operation is unique and cannot be maliciously repeated
Linguistics and General Usage
- The word "nonce" originates from the Middle English phrase "for the nonce," meaning "for the present occasion." In this context, it describes something created or used only for a particular, temporary purpose. For example, a "nonce word" is a made-up word invented for one-time use, often in literature or linguistic experiments
British Slang
- In British slang, "nonce" is a derogatory term for a sex offender, especially one who has committed crimes against children. This usage is highly offensive and is commonly found in UK prison slang and popular culture
Summary Table
Context| Meaning/Origin| Example/Usage
---|---|---
Cryptography| "Number used once" (unique value for security)| Preventing
replay attacks in protocols
Linguistics| For the present occasion; one-time use| "Nonce word" in
experiments or fiction
British Slang| Derogatory term for a sex offender, esp. paedophile| Used in UK
prison slang and media
Etymology
- The cryptographic meaning is an acronym or contraction of "number used once."
- The general and linguistic meaning comes from Middle English, "for the nonce," meaning "for the present occasion."
- The slang usage has unclear origins but is well established in British English, particularly in prison contexts
Note: The meaning of "nonce" depends heavily on context-technical, linguistic, or slang. Always consider the setting in which the term is used.
