Word.ws English Dictionary

nothing-up-my-sleeve number

nothing-up-my-sleeve number noun: a number which, by its construction, is above suspicion of having hidden properties; used in creating cryptographic functions such as hashes and ciphers.

Noun

nothing-up-my-sleeve number (plural nothing-up-my-sleeve numbers)

  1. A number which, by its construction, is above suspicion of having hidden properties; used in creating cryptographic functions such as hashes and ciphers.
    • The key schedule, however, expanding the key using an essentially one-way method, is more complex, with the binary expansions of both e and the golden ratio of "nothing up my sleeve numbers".2014 May, Mr. Ajay Bhaisare, “Data Protection Outsourcing of Cloud Data to Maintain Trust between Cloud Service and Data Owner Using RC5 Algorithm”, in IJCSMC, volume 3, number 5, page 608
    • Anyway, they make the same point: “The BADA55-VPR curves illustrate the fact that 'verifiably pseudorandom' curves with 'systematic' seeds generated from 'nothing-up-my-sleeve numbers' also do not stop the attacker from generating a curve with a one-in-a-million weakness.”2017, Manul Laphroaig, PoC or GTFO

Forms of nothing-up-my-sleeve number

pluralnothing-up-my-sleeve numbers

Origin of nothing-up-my-sleeve number

In reference to magic tricks in which the performer may have something concealed in a sleeve (or may demonstrate to the audience that they do not).

Questions about nothing-up-my-sleeve number

What does nothing-up-my-sleeve number mean?
Nothing-up-my-sleeve number means a number which, by its construction, is above suspicion of having hidden properties; used in creating cryptographic functions such as hashes and ciphers.
What part of speech is nothing-up-my-sleeve number?
Nothing-up-my-sleeve number is a noun.
What is the plural of nothing-up-my-sleeve number?
The plural of nothing-up-my-sleeve number is nothing-up-my-sleeve numbers.

Words near nothing-up-my-sleeve number in the dictionary

  1. nothing ventured, nothing gained
  2. nothing-burger
  3. nothing-burgers
  4. nothing-butteries
  5. nothing-buttery
  6. nothing-up-my-sleeve number
  7. nothing-up-my-sleeve numbers
  8. nothingarian
  9. nothingarianism
  10. nothingarians
  11. nothingburger

Source and license

Adapted from Wiktionary: nothing-up-my-sleeve number (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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