openssl_asn1_decode_test.rb

require 'openssl'
require "minitest/autorun"

class  OpenSSL::TestASN1 < Minitest::Test
  def test_decode
    subj = OpenSSL::X509::Name.parse("/DC=org/DC=ruby-lang/CN=TestCA")
    key = OpenSSL::TestUtils::TEST_KEY_RSA1024
    now = Time.at(Time.now.to_i) # suppress usec
    serial = 0xdeadbeafdeadbeafdeadbeafdeadbeaf
    exts = [
      ["basicConstraints","CA:TRUE,pathlen:1",true],
      ["keyUsage","keyCertSign, cRLSign",true],
      ["subjectKeyIdentifier","hash",false],
    ]
    dgst = OpenSSL::Digest::SHA1.new
    cert = OpenSSL::TestUtils.issue_cert(
      subj, key, serial, now, now+3600, exts, nil, nil, dgst)


    asn1 = OpenSSL::ASN1.decode(cert)
    assert_equal(OpenSSL::ASN1::Sequence, asn1.class)
    assert_equal(3, asn1.value.size)
  end

  def test_decode_after_year_2038
    subj = OpenSSL::X509::Name.parse("/DC=org/DC=ruby-lang/CN=TestCA")
    key = OpenSSL::TestUtils::TEST_KEY_RSA1024
    now = Time.at(Time.now.to_i) # suppress usec
    valid_until = Time.at(Time.now.to_i + (3600 * 24 * 365 * 23))
    serial = 0xdeadbeafdeadbeafdeadbeafdeadbeaf
    exts = [
      ["basicConstraints","CA:TRUE,pathlen:1",true],
      ["keyUsage","keyCertSign, cRLSign",true],
      ["subjectKeyIdentifier","hash",false],
    ]
    dgst = OpenSSL::Digest::SHA1.new
    cert = OpenSSL::TestUtils.issue_cert(
      subj, key, serial, now, valid_until, exts, nil, nil, dgst)
      puts cert.to_text

    asn1 = OpenSSL::ASN1.decode(cert)
    assert_equal(OpenSSL::ASN1::Sequence, asn1.class)
    assert_equal(3, asn1.value.size)
  end

end


module OpenSSL::TestUtils

  TEST_KEY_RSA1024 = OpenSSL::PKey::RSA.new <<-_end_of_pem_
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
  _end_of_pem_


  module_function

  def issue_cert(dn, key, serial, not_before, not_after, extensions,
                 issuer, issuer_key, digest)
    cert = OpenSSL::X509::Certificate.new
    issuer = cert unless issuer
    issuer_key = key unless issuer_key
    cert.version = 2
    cert.serial = serial
    cert.subject = dn
    cert.issuer = issuer.subject
    cert.public_key = key.public_key
    cert.not_before = not_before
    cert.not_after = not_after
    ef = OpenSSL::X509::ExtensionFactory.new
    ef.subject_certificate = cert
    ef.issuer_certificate = issuer
    extensions.each{|oid, value, critical|
      cert.add_extension(ef.create_extension(oid, value, critical))
    }
    cert.sign(issuer_key, digest)
    cert
  end
end