Method: Ccrypto::Java::X509Engine#generate_from_csr

Defined in:
lib/ccrypto/java/engines/x509_engine.rb

#generate_from_csr(cp, issuerKey, &block) ⇒ Object

Raises:

  • (X509EngineException) 


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# File 'lib/ccrypto/java/engines/x509_engine.rb', line 31

def generate_from_csr(cp, issuerKey, &block)

  csrObj = Ccrypto::X509CSR.new(cp.csr)
  csrCp = csrObj.csr_info


  raise X509EngineException, "Issuer key must be given" if issuerKey.nil?
  raise X509EngineException, "Issuer key must be a private key. Given #{issuerKey}" if not issuerKey.is_a?(Ccrypto::PrivateKey)

  prov = Ccrypto::Java::JCEProvider::DEFProv
  signHash = cp.hashAlgo
  signSpec = nil
  if block
    uprov = block.call(:jce_provider_name)
    prov if not_empty?(uprov)
    signSpec = block.call(:sign_spec)
    signHash = block.call(:sign_hash) if is_empty?(signHash)
  end

  signHash = :sha256 if is_empty?(signHash)
  raise X509EngineException, "Given digest algo '#{signHash}' is not suported" if not DigestEngine.is_digest_supported?(signHash)

  validFrom = cp.not_before 
  validTo = cp.not_after

  extUtils = org.bouncycastle.cert.bc.BcX509ExtensionUtils.new

  if cp.serial.is_a?(java.math.BigInteger)
    serial = cp.serial
  else
    serial = java.math.BigInteger.new(cp.serial, 16)
  end

  iss = cp.issuer_cert
  if not_empty?(iss) 
    raise X509EngineException, "Issuer certificate must be Ccrypto::X509Cert object (#{iss.class})" if not iss.is_a?(Ccrypto::X509Cert)

    certGen = org.bouncycastle.cert.jcajce.JcaX509v3CertificateBuilder.new(Ccrypto::X509Cert.to_java_cert(iss), serial, validFrom, validTo, to_cert_subject(csrCp), csrCp.public_key)
    certGen.addExtension(org.bouncycastle.asn1.x509.Extension::authorityKeyIdentifier, false, extUtils.createAuthorityKeyIdentifier(org.bouncycastle.asn1.x509.SubjectPublicKeyInfo.getInstance(iss.getPublicKey.encoded)))

  else

    name = to_cert_subject(csrCp)
    certGen = org.bouncycastle.cert.jcajce.JcaX509v3CertificateBuilder.new(name, serial, validFrom, validTo, name, csrCp.public_key.native_pubKey)
    certGen.addExtension(org.bouncycastle.asn1.x509.Extension::authorityKeyIdentifier, false, extUtils.createAuthorityKeyIdentifier(org.bouncycastle.asn1.x509.SubjectPublicKeyInfo.getInstance(csrCp.public_key.to_bin)))
  end

  certGen.addExtension(org.bouncycastle.asn1.x509.Extension::basicConstraints, true, org.bouncycastle.asn1.x509.BasicConstraints.new(true)) if cp.gen_issuer_cert?

  #certGen.addExtension(org.bouncycastle.asn1.x509.Extension::keyUsage, false, org.bouncycastle.asn1.x509.KeyUsage.new(to_keyusage))
  #criticalKu = 0
  #nonCriticalKu = 0
  kuv = 0
  criticalKu = false
  cp.key_usage.selected.each do |ku, critical|
    kur = BCConstMapping::KeyUsageMapping[ku]
    #case ku
    #when :digitalSignature
    #  kur = org.bouncycastle.asn1.x509::KeyUsage::digitalSignature
    #when :nonRepudiation
    #  kur = org.bouncycastle.asn1.x509::KeyUsage::nonRepudiation
    #when :keyEncipherment
    #  kur = org.bouncycastle.asn1.x509::KeyUsage::keyEncipherment
    #when :dataEncipherment
    #  kur = org.bouncycastle.asn1.x509::KeyUsage::dataEncipherment
    #when :keyAgreement
    #  kur = org.bouncycastle.asn1.x509::KeyUsage::keyAgreement
    #when :keyCertSign
    #  kur = org.bouncycastle.asn1.x509::KeyUsage::keyCertSign
    #when :crlSign
    #  kur = org.bouncycastle.asn1.x509::KeyUsage::cRLSign
    #when :encipherOnly
    #  kur = org.bouncycastle.asn1.x509::KeyUsage::encipherOnly
    #when :decipherOnly
    #  kur = org.bouncycastle.asn1.x509::KeyUsage::decipherOnly
    #end

    criticalKu = critical if critical

    kuv |= kur

    #if critical
    #  criticalKu |= kur
    #else
    #  nonCriticalKu |= kur
    #end

  end

  certGen.addExtension(org.bouncycastle.asn1.x509.Extension::keyUsage, criticalKu, org.bouncycastle.asn1.x509.KeyUsage.new(kuv)) 
  #certGen.addExtension(org.bouncycastle.asn1.x509.Extension::keyUsage, true, org.bouncycastle.asn1.x509.KeyUsage.new(criticalKu)) if criticalKu != 0
  #certGen.addExtension(org.bouncycastle.asn1.x509.Extension::keyUsage, false, org.bouncycastle.asn1.x509.KeyUsage.new(nonCriticalKu)) if nonCriticalKu != 0

  ekuCritical = false
  eku = java.util.Vector.new
  #ekuCritical = java.util.Vector.new
  #ekuNonCritical = java.util.Vector.new
  cp.ext_key_usage.selected.each do |ku,critical|
    kur = BCConstMapping::ExtKeyUsageMapping[ku]
    #case ku
    #when :allPurpose
    #  kur = org.bouncycastle.asn1.x509.KeyPurposeId::anyExtendedKeyUsage
    #when :serverAuth
    #  kur = org.bouncycastle.asn1.x509.KeyPurposeId::id_kp_serverAuth
    #when :clientAuth
    #  kur = org.bouncycastle.asn1.x509.KeyPurposeId::id_kp_clientAuth
    #when :codeSigning
    #  kur =  org.bouncycastle.asn1.x509.KeyPurposeId::id_kp_codeSigning
    #when :emailProtection
    #  kur = org.bouncycastle.asn1.x509.KeyPurposeId::id_kp_emailProtection
    #when :timeStamping
    #  kur = org.bouncycastle.asn1.x509.KeyPurposeId::id_kp_timeStamping
    #when :ocspSigning
    #  kur = org.bouncycastle.asn1.x509.KeyPurposeId::id_kp_OCSPSigning
    #end

    ekuCritical = critical if critical
    eku.add_element(kur)
    #if critical
    #  ekuCritical.add_element(kur)
    #else
    #  ekuNonCritical.add_element(kur)
    #end
  end

  #extKeyUsage = java.util.Vector.new
  cp.domain_key_usage.each do |dku, critical|
    #kur = org.bouncycastle.asn1.DERObjectIdentifier.new(dku)
    kur = org.bouncycastle.asn1.ASN1ObjectIdentifier.new(dku)

    ekuCritical = critical if critical
    eku.add_element(kur)
    #if critical
    #  ekuCritical.add_element(kur)
    #else
    #  ekuNonCritical.add_element(kur)
    #end
  end

  certGen.addExtension(org.bouncycastle.asn1.x509.Extension::extendedKeyUsage, ekuCritical, org.bouncycastle.asn1.x509.ExtendedKeyUsage.new(eku)) if not_empty?(eku)
  #certGen.addExtension(org.bouncycastle.asn1.x509.Extension::extendedKeyUsage, true, org.bouncycastle.asn1.x509.ExtendedKeyUsage.new(ekuCritical)) if not_empty?(ekuCritical)
  #certGen.addExtension(org.bouncycastle.asn1.x509.Extension::extendedKeyUsage, false, org.bouncycastle.asn1.x509.ExtendedKeyUsage.new(ekuNonCritical)) if not_empty?(ekuNonCritical)
  #certGen.addExtension(org.bouncycastle.asn1.x509.Extension::extendedKeyUsage, false, org.bouncycastle.asn1.x509.ExtendedKeyUsage.new(extKeyUsage)) if not extKeyUsage.is_empty?

  altName = []
  csrCp.email.uniq.each do |e|
    altName << org.bouncycastle.asn1.x509.GeneralName.new(org.bouncycastle.asn1.x509.GeneralName::rfc822Name,e)
  end

  csrCp.dns_name.uniq.each do |d|
    altName << org.bouncycastle.asn1.x509.GeneralName.new(org.bouncycastle.asn1.x509.GeneralName::dNSName,d)
  end

  csrCp.ip_addr.uniq.each do |d|
    altName << org.bouncycastle.asn1.x509.GeneralName.new(org.bouncycastle.asn1.x509.GeneralName::iPAddress,d)
  end

  csrCp.uri.uniq.each do |u|
    altName << org.bouncycastle.asn1.x509.GeneralName.new(org.bouncycastle.asn1.x509.GeneralName::uniformResourceIdentifier,u)
  end

  certGen.addExtension(org.bouncycastle.asn1.x509.Extension::subjectAlternativeName, false, org.bouncycastle.asn1.x509.GeneralNames.new(altName.to_java(org.bouncycastle.asn1.x509.GeneralName)) )

  csrCp.custom_extension.each do |k, v|
    val = v[:value]
    val = "" if is_empty?(val)
    #ev = org.bouncycastle.asn1.x509.Extension.new(org.bouncycastle.asn1.DERObjectIdentifier.new(k), v[:critical], org.bouncycastle.asn1.DEROctetString.new(val.to_java.getBytes))
    ev = org.bouncycastle.asn1.x509.Extension.new(org.bouncycastle.asn1.ASN1ObjectIdentifier.new(k), v[:critical], org.bouncycastle.asn1.DEROctetString.new(val.to_java.getBytes))
    certGen.addExtension(ev)
  end


  if not_empty?(cp.crl_dist_point)
    crls = []
    cp.crl_dist_point.each do |c|
      crls << org.bouncycastle.asn1.x509.GeneralName.new(org.bouncycastle.asn1.x509.GeneralName::uniformResourceIdentifier, org.bouncycastle.asn1.DERIA5String.new(c))
    end
    gns = org.bouncycastle.asn1.x509.GeneralNames.new(crls.to_java(org.bouncycastle.asn1.x509.GeneralName))
    dpn = org.bouncycastle.asn1.x509.DistributionPointName.new(gns)
    dp =  org.bouncycastle.asn1.x509.DistributionPoint.new(dpn,nil,nil)
    certGen.addExtension(org.bouncycastle.asn1.x509.X509Extensions::CRLDistributionPoints,false,org.bouncycastle.asn1.DERSequence.new(dp))      
  end

  aia = []
  cp.ocsp_url.each do |o|
    ov = org.bouncycastle.asn1.x509.GeneralName.new(org.bouncycastle.asn1.x509.GeneralName::uniformResourceIdentifier, org.bouncycastle.asn1.DERIA5String.new(o))
    aia << org.bouncycastle.asn1.x509.AccessDescription.new(org.bouncycastle.asn1.x509.AccessDescription.id_ad_ocsp, ov)
  end

  cp.issuer_url.each do |i|
    iv = org.bouncycastle.asn1.x509.GeneralName.new(org.bouncycastle.asn1.x509.GeneralName::uniformResourceIdentifier, org.bouncycastle.asn1.DERIA5String.new(i))
    aia << org.bouncycastle.asn1.x509.AccessDescription.new(org.bouncycastle.asn1.x509.AccessDescription.id_ad_caIssuers, iv)
  end

  if not_empty?(aia)
    authorityInformationAccess = org.bouncycastle.asn1.x509.AuthorityInformationAccess.new(aia.to_java(org.bouncycastle.asn1.x509.AccessDescription))
    certGen.addExtension(org.bouncycastle.asn1.x509.X509Extensions::AuthorityInfoAccess, false, authorityInformationAccess)			  
  end


  certGen.addExtension(org.bouncycastle.asn1.x509.Extension::subjectKeyIdentifier, false, extUtils.createSubjectKeyIdentifier(org.bouncycastle.asn1.x509.SubjectPublicKeyInfo.getInstance(csrCp.public_key.to_bin)))

  signAlgo = nil
  # alreacy check if digest algo exist or not at the entry of the method
  foundDigest = DigestEngine.find_digest_config(signHash)
  if foundDigest.length == 1
    selDigest = foundDigest.first
  else
    ## prompt user for digest
    if block
      selDigest = block.call(:multiple_digest_algo_found, foundDigest)
    else
      raise X509EngineException, "Multiple digest algo configuration found based on given value '#{signHash}' but not given a block. Not able to proceed."
    end
  end
  signHashVal = selDigest.provider_config[:algo_name].gsub("-","")

  gKey = issuerKey
  loop do
    case gKey
    when org.bouncycastle.jcajce.provider.asymmetric.ec.BCECPrivateKey
      signAlgo = "#{signHashVal}WithECDSA"
      break
    when java.security.interfaces.RSAPrivateKey , org.bouncycastle.jcajce.provider.asymmetric.rsa.BCRSAPrivateCrtKey
      signAlgo = "#{signHashVal}WithRSA"
      break
    when Ccrypto::PrivateKey
      logger.debug "Found Ccrypto::Private key #{gKey}."
      gKey = gKey.native_privKey
    else
      raise X509EngineException, "Unsupported issuer key type '#{gKey}'"
    end
  end

  #signAlgo = "SHA256WithECDSA"
  #signer = org.bouncycastle.operator.jcajce.JcaContentSignerBuilder.new(signAlgo).setProvider(prov).build(issuerKey.private_key)
  signer = org.bouncycastle.operator.jcajce.JcaContentSignerBuilder.new(signAlgo).setProvider(prov).build(gKey)

  cert = org.bouncycastle.cert.jcajce.JcaX509CertificateConverter.new().setProvider(prov).getCertificate(certGen.build(signer))
  cert

  Ccrypto::X509Cert.new(cert)

end