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amalagaura/rubyDotNetHash.rb

Created May 9, 2016 16:57
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.NET passwords operable in ruby
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rubyDotNetHash.rb
ruby dotNetHash.rb password123 LU7hUk4MXAvlq6DksvP9SQ==
require "base64"
require “digest”
# Encode password as double-width characters
password_as_text = ARGV.first
double_width_password = []
double_width_password = password_as_text.encode("UTF-16LE").bytes.to_a
# Unencode the salt
salt = Base64.decode64(ARGV[1])# Concatenate salt+pass
salt_pass_array = []
salt_pass_array = salt.bytes.to_a + double_width_password
# Repack array as string and hash it. Then encode.
salt_pass_str = salt_pass_array.pack('C*')
sha1_saltpass = Digest::SHA1.digest(salt_pass_str)
enc_sha1_saltpass = Base64.encode64(sha1_saltpass).strip()
puts "Encoded SHA1 saltpass is " + enc_sha1_saltpass
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