DZone Snippets: sha1 code

MD5 and SHA1 in Ruby

axsaxs (Alessio Saltarin) — Tue, 23 Jan 2007 20:53:03 GMT

// A Simple MD5/SHA1 calculator in Ruby



#!/usr/bin/ruby1.8 -w



#

# A Simple Hash Code Calculator

# Returns SHA1 and MD5 hash for any given file

# Author: Alessio Saltarin

#



require 'digest/md5'

require 'digest/sha1'



$BUFLEN = 1024



class Hasher

	# Constructor

	# method = "SHA1" or "MD5"

	# filepath = Full filepath

	def initialize(method, filepath)

		if (method.upcase == "-SHA1")

			@hashfunc = Digest::SHA1.new

			@hashname = "SHA1"

		else

			@hashfunc = Digest::MD5.new

			@hashname = "MD5"

		end

		@fullfilename = filepath

	end



	def hashname

		@hashname

	end



	# Compute hash code

	def hashsum

		open(@fullfilename, "r") do |io|

			puts "Reading "+@fullfilename

			counter = 0

			while (!io.eof)

				readBuf = io.readpartial($BUFLEN)

				putc '.' if ((counter+=1) % 3 == 0)

				@hashfunc.update(readBuf)

			end

		end

		return @hashfunc.hexdigest

	end

end



def usage

	puts "Usage: Hasher.rb [-SHA1|-MD5] filename"

end



def printresult(filename, method, sum)

	puts "\n" + filename + " ==> "+ method + ": " + sum	

end



#Program starts

if (ARGV.length == 2)

	hashcomp = Hasher.new(ARGV[0], ARGV[1])

	printresult(ARGV[1], hashcomp.hashname, hashcomp.hashsum)

	

elsif (ARGV.length == 1)

	hashcomp = Hasher.new("-MD5", ARGV[0])

	printresult(ARGV[0], hashcomp.hashname, hashcomp.hashsum)

else

	usage

end

Ruby HMAC verifier

exabrial (Jon) — Sun, 05 Nov 2006 01:54:20 GMT

// Ruby script to verify the HMAC of a file or string.



#!/usr/bin/env ruby

#

#  Created by Jon (exabrial+hmacruby@gmail.com) on 2006-11-04.

#  Copyright (c) 2006. All rights reserved.

#  Released under MIT License



require 'openssl'

require "getopt/std"

include OpenSSL

include Digest



def printhelp

  help=<Purpose: Provides HMAC-SHA1 of a file or string. Text passwords are SHA1 hashed.

Usage: hmac.rb ["string to digest"] [-f (pathtofile)] [-k (pathtokeyfile)]

Options:

  -f (pathtofile) digests a file instead of a string

  -k (pathtokeyfile) does not prompt for key and uses the specified file as a key instead.

end

  puts help

  exit

end



if ARGV.size < 1

  printhelp

elsif ARGV.size==1

  @plaintext=ARGV.shift

else

  begin

    opt = Getopt::Std.getopts("f:k:")

  rescue Getopt::StdError

    printhelp

  end

  

  if opt["f"]

    @plaintext=File.read(opt["f"])

  end

  if opt["k"]

    @key=File.read(opt["k"])

  end

  

  printhelp if (!@plaintext&&!@key)

end



def getkey

  return @key if @key

  print "Please type your key then push enter:"

  return SHA1.new(gets()).to_s

end



def main

  hmacd=HMAC.new(getkey(), SHA1.new)

  hmacd.update(@plaintext)

  puts hmacd.to_s

end



main

sha1

frontera000 (bob bae) — Sat, 14 Oct 2006 09:10:40 GMT

// description of your code here



(setq SHA1 (import "libssl.so.4" "SHA1"))



(join (map (lambda (x) (format "%02x" (& x 0xff))) (unpack (dup "c" 20) (get-string (SHA1 "abc" 3 0)))))



;; produces "a9993e364706816aba3e25717850c26c9cd0d89d"

SHA1 encryption in Ruby

hmans (Hendrik Mans) — Fri, 08 Apr 2005 22:49:23 GMT

require 'digest/sha1'

sha1 = Digest::SHA1.hexdigest('something secret')