.NET passwords operable in ruby

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