AgoraDynamicKey4 in Ruby

DynamicKey4.rb

require "openssl"

module DynamicKey
  def generate_media_channel_key(app_id, app_certificate, channel_name, unix_ts, random_int, uid, expired_ts)
    channel_name = channel_name.to_s
    expired_ts   = expired_ts.to_s
    p "in generate_media_channel_key"
    return do_generate(app_id, app_certificate, channel_name, unix_ts, random_int, uid, expired_ts, 'ACS')
  end

  def do_generate app_id, app_certificate, channel_name, unix_ts, random_int, uid, expired_ts, service_type
    p "in do_generate"
    uid = uid.to_s
    version = "004"
    unix_ts_str = unix_ts.to_s  #Unix Time stamp, track time as a running total of seconds
    rnd_txt = random_int.to_s(16)
    random_int_str = ("00000000" + rnd_txt)[rnd_txt.length..-1]
    expired_ts_str = ("0000000000" + expired_ts)[expired_ts.length..-1]
    uid_str        = ("0000000000" + uid)[uid.length..-1]
    sign = generate_signature4(app_id, app_certificate, channel_name, unix_ts_str, random_int_str, uid_str, expired_ts_str, service_type)
    p sign
    return version + sign + app_id + unix_ts_str + random_int_str + expired_ts_str
  end


  def generate_signature4(app_id, app_certificate, channel_name, unix_ts_str, random_int_str, uid_str, expired_ts_str, service_type)
    p "in generate_signature4"
    data   = service_type + app_id + unix_ts_str + random_int_str + channel_name + uid_str + expired_ts_str
    p uid_str
    p expired_ts_str
    p data
    digest = OpenSSL::Digest::SHA1.new
    return OpenSSL::HMAC.hexdigest(digest, app_certificate, data)
  end

end

class CDynamicKey
  include DynamicKey
end

# app_id  = "970ca35de60c44645bbae8a215061b33"
# app_certificate     = "5cfd2fd1755d40ecb72977518be15d3b"
# channel = "7d72365eb983485397e3e3f9d460bdda"
# ts = 1446455472
# r = 58964981
# uid = 2882341273
# expired_ts = 1446455471


dkey = CDynamicKey.new
p dkey.generate_media_channel_key("ae0f2c8945d24128a75dc5ab35c1b6c1", "4df2344d6fb947ea8728d8a028a00b08", "582c578b6300cf00064aef2d", 1479301006, 8901830, 0, 0)