class Trocla::Formats::X509

Public Instance Methods

format(plain_password,options={}) click to toggle source
# File lib/trocla/formats/x509.rb, line 3
def format(plain_password,options={})

  if plain_password.match(/-----BEGIN RSA PRIVATE KEY-----.*-----END RSA PRIVATE KEY-----.*-----BEGIN CERTIFICATE-----.*-----END CERTIFICATE-----/)
    # just an import, don't generate any new keys
    return plain_password
  end

  if options['subject']
    subject = options['subject']
  elsif options['CN']
    subject = ''
    ['C','ST','L','O','OU','CN','emailAddress'].each do |field|
      subject << "/#{field}=#{options[field]}" if options[field]
    end
  else
    raise "You need to pass \"subject\" or \"CN\" as an option to use this format"
  end
  hash = options['hash'] || 'sha2'
  sign_with = options['ca'] || nil
  keysize = options['keysize'] || 2048
  serial = options['serial'] || 1
  days = options['days'].to_i || 365
  altnames = options['altnames'] || nil
  altnames.collect { |v| "DNS:#{v}" }.join(', ') if altnames

  begin
    key = mkkey(keysize)
  rescue Exception => e
    raise "Private key for #{subject} creation failed: #{e.message}"
  end

  if sign_with # certificate signed with CA
    begin
      ca = OpenSSL::X509::Certificate.new(getca(sign_with))
      cakey = OpenSSL::PKey::RSA.new(getca(sign_with))
      caserial = getserial(sign_with, serial)
    rescue Exception => e
      raise "Value of #{sign_with} can't be loaded as CA: #{e.message}"
    end

    begin
      subj = OpenSSL::X509::Name.parse(subject)
      request = mkreq(subj, key.public_key)
      request.sign(key, signature(hash))
    rescue Exception => e
      raise "Certificate request #{subject} creation failed: #{e.message}"
    end

    begin
      csr_cert = mkcert(caserial, request.subject, ca, request.public_key, days, altnames)
      csr_cert.sign(cakey, signature(hash))
      setserial(sign_with, caserial)
    rescue Exception => e
      raise "Certificate #{subject} signing failed: #{e.message}"
    end

    key.send("to_pem") + csr_cert.send("to_pem")
  else # self-signed certificate
    begin
      subj = OpenSSL::X509::Name.parse(subject)
      cert = mkcert(serial, subj, nil, key.public_key, days, altnames)
      cert.sign(key, signature(hash))
    rescue Exception => e
      raise "Self-signed certificate #{subject} creation failed: #{e.message}"
    end

    key.send("to_pem") + cert.send("to_pem")
  end
end

Private Instance Methods

getca(ca) click to toggle source
# File lib/trocla/formats/x509.rb, line 129
def getca(ca)
  trocla.get_password(ca,'x509')
end
getserial(ca,serial) click to toggle source
# File lib/trocla/formats/x509.rb, line 133
def getserial(ca,serial)
  newser = trocla.get_password("#{ca}_serial",'plain')
  if newser
    newser + 1
  else
    serial
  end
end
mkcert(serial,subject,issuer,public_key,days,altnames) click to toggle source
# File lib/trocla/formats/x509.rb, line 105
def mkcert(serial,subject,issuer,public_key,days,altnames)
  cert = OpenSSL::X509::Certificate.new
  issuer = cert if issuer == nil
  cert.subject = subject
  cert.issuer = issuer.subject
  cert.not_before = Time.now
  cert.not_after = Time.now + days * 24 * 60 * 60
  cert.public_key = public_key
  cert.serial = serial
  cert.version = 2

  ef = OpenSSL::X509::ExtensionFactory.new
  ef.subject_certificate = cert
  ef.issuer_certificate = issuer
  cert.extensions = [ ef.create_extension("subjectKeyIdentifier", "hash") ]
  cert.add_extension ef.create_extension("basicConstraints","CA:TRUE", true) if subject == issuer
  cert.add_extension ef.create_extension("basicConstraints","CA:FALSE", true) if subject != issuer
  cert.add_extension ef.create_extension("keyUsage", "nonRepudiation, digitalSignature, keyEncipherment", true)
  cert.add_extension ef.create_extension("subjectAltName", altnames, true) if altnames
  cert.add_extension ef.create_extension("authorityKeyIdentifier", "keyid:always,issuer:always")

  cert
end
mkkey(len) click to toggle source
# File lib/trocla/formats/x509.rb, line 92
def mkkey(len)
  OpenSSL::PKey::RSA.generate(len)
end
mkreq(subject,public_key) click to toggle source
# File lib/trocla/formats/x509.rb, line 96
def mkreq(subject,public_key)
  request = OpenSSL::X509::Request.new
  request.version = 0
  request.subject = subject
  request.public_key = public_key

  request
end
setserial(ca,serial) click to toggle source
# File lib/trocla/formats/x509.rb, line 142
def setserial(ca,serial)
  trocla.set_password("#{ca}_serial",'plain',serial)
end
signature(hash = 'sha2') click to toggle source

nice help: gist.github.com/mitfik/1922961

# File lib/trocla/formats/x509.rb, line 76
def signature(hash = 'sha2')
  if hash == 'sha1'
      OpenSSL::Digest::SHA1.new
  elsif hash == 'sha224'
      OpenSSL::Digest::SHA224.new
  elsif hash == 'sha2' || hash == 'sha256'
      OpenSSL::Digest::SHA256.new
  elsif hash == 'sha384'
      OpenSSL::Digest::SHA384.new
  elsif hash == 'sha512'
      OpenSSL::Digest::SHA512.new
  else
      raise "Unrecognized hash: #{hash}"
  end
end