module EasyCard

Constants

CONST
IV
KEY
SALT
VERSION

Public Instance Methods

card_id(card_number) click to toggle source 
# File lib/easycard.rb, line 31
def card_id card_number
  remainder = card_number.size % 16
  data = card_number + "\x06"*(16 - remainder) if remainder != 0
  cipher = OpenSSL::Cipher.new('DES3')
  cipher.encrypt
  cipher.key = KEY
  cipher.iv = IV
  Base64.encode64(cipher.update(data)).chop!
end
query(cart_number, from: Date.today-30, to: Date.today) click to toggle source 
# File lib/easycard.rb, line 18
def query cart_number, from: Date.today-30, to: Date.today
  query_hash = {
    cardID: card_id(cart_number),
    begin: from.strftime('%Y-%m-%d'),
    end: to.strftime('%Y-%m-%d'),
    verify: verify,
    ev: 1
  }
  uri = URI('https://wallet.easycard.com.tw/EasyWallet/QueryManager/V3/GetTXNThinDataInfo')
  uri.query = URI.encode_www_form(query_hash)
  Response.new(Net::HTTP.get(uri))
end
verify(time = Time.now.localtime('+08:00')) click to toggle source 
# File lib/easycard.rb, line 41
def verify time = Time.now.localtime('+08:00')
  seed = time.month + time.day + time.hour
  Digest::MD5.hexdigest("#{seed * CONST}#{SALT}").upcase!
end