Usually means: Cryptographic hash function, now outdated.
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We found 7 dictionaries that define the word SHA-1:

General (2 matching dictionaries)
  1. SHA-1: Dictionary.com
  2. SHA-1, Sha-1: Wikipedia, the Free Encyclopedia

Computing (4 matching dictionaries)
  1. SHA-1: Hacking Lexicon
  2. I T Glossary (No longer online)
  3. SHA-1, SHA-1: Encyclopedia

Miscellaneous (1 matching dictionary)
  1. SHA-1: Acronym Finder

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Definitions from Wikipedia (SHA-1)

▸ noun:  In cryptography, (Secure Hash Algorithm 1) a hash function which takes an input and produces a 160-bit (20-byte) hash value known as a message digest – typically rendered as 40 hexadecimal digits.




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