How do I create a SHA1 hash in ruby?

ruby hash sha1

90,717

Solution 1

require 'digest/sha1'
Digest::SHA1.hexdigest 'foo'

Solution 2

For a Base64 encoded hash, to validated an Oauth signature, I used

require 'base64'
require 'hmac-sha1'

Base64.encode64((HMAC::SHA1.new('key') << 'base').digest).strip

Solution 3

I created a helper gem which is a simple wrapper around some sha1 code

require 'rickshaw'
> Rickshaw::SHA1.hash('LICENSE.txt')

 => "4659d94e7082a65ca39e7b6725094f08a413250a" 

> "hello world".to_sha1

 => "2aae6c35c94fcfb415dbe95f408b9ce91ee846ed"

90,717

quackingduck

Updated on November 07, 2020

Comments

quackingduck over 3 years

SHA Hash functions
- Jonas Elfström over 7 years
  
  SHA-1 is has been shown to be insecure. Consider using safer alternatives, such as SHA-256, or SHA-3. shattered.io
oligan about 13 years

Isn't this a duplicate of @devstopfix's answer?
Rixius about 13 years

even if it is, it's some pretty ugly ruby code to be suggesting, and doesn't even mention that it needs `require \'digest/sha1\'' -1
Davidslv about 13 years

Don't forget that stackoverflow has too many visitors, why you don't show us the right way to do it? Less critics more code examples
andrewrk over 12 years

There's also Digest::SHA1.base64digest 'foo'
andrewrk over 12 years

FYI, the 'hmac-sha1' requirement is met from the gem 'ruby-hmac'
jwfearn about 12 years

FYI: Digest is part of the Ruby Standard Library (ruby-doc.org/stdlib-1.9.2/libdoc/digest/rdoc/index.html). It includes implementations for SHA1, SHA2, MD5 and others hash algorithms.
Blixxy almost 12 years

what's this 'serialize' function? that's not a part of ruby. Worse yet, the string being passed to hexdigest isn't dynamic at all! This method would return the same hash regardless what data you give it!
Gus Shortz about 11 years

Need require 'digest/sha1' in order to use SHA1 method.
Joshua Pinter almost 4 years

FYI, you should use Digest::SHA2.hexdigest now as it is more secure and has not (yet) been found to have any collisions.