Der ehrgeizlose Programmierer

I don’t know how many times I’ve gone to the stdlib documentation for usage information concerning digest. Unfortunately, there’s nothing to see there, move along. Documentation is provided in the src distribution [src]/ext/digest/digest.txt. The abridged version:

require 'digest/[md5|sha1|sha2|rmd160]'    
digest = Digest::[MD5|SHA1|SHA256|SHA384|SHA512|RMD160].new   
while #some loop     
  digest.update(bytes)
end
digest.digest #raw bytes
digest.hexdigest #hex

alternatively, the short form:

require 'digest/MD5'
d = Digest::MD5.new
d.hexdigest('whatever you're digesting')

sha2 contains implementations for the digest classes SHA256,SHA384,SHA512

Finally the lengths of the returned hex strings:

This entry was posted on Sonntag, Februar 10th, 2008 at 15:47 and is filed under Allgemein, Programming, ruby, snippet. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.