module SignatureHelper

# File lib/sunat_invoice/testing_support/signature_helper.rb, line 15
def self.generate_certificate(pkey)
  name = OpenSSL::X509::Name.parse('CN=example.com/C=EE')
  cert = OpenSSL::X509::Certificate.new
  cert.version    = 2
  cert.serial     = 0
  cert.not_before = Time.now
  cert.not_after  = cert.not_before + 1 * 365 * 24 * 60 * 60
  cert.public_key = pkey.public_key
  cert.subject    = name
  cert.issuer     = name
  cert.sign pkey, OpenSSL::Digest::SHA1.new
  cert
end

# File lib/sunat_invoice/testing_support/signature_helper.rb, line 4
def self.generate_keys(keys_dir = "#{SunatInvoice.root}/test/certs")
  return if File.exist?("#{keys_dir}/pk_file")

  pk = OpenSSL::PKey::RSA.new 2048
  cert = generate_certificate(pk)

  Dir.mkdir(keys_dir) unless Dir.exist?(keys_dir)
  File.open("#{keys_dir}/pk_file", 'w') { |f| f.puts pk.to_pem }
  File.open("#{keys_dir}/cert_file", 'w') { |f| f.puts cert.to_pem }
end