Class: EchSpec::CLI::GenConfigs

Inherits:
Object
  • Object
show all
Defined in:
lib/echspec/cli/gen_configs.rb

Instance Method Summary collapse

Instance Method Details

#execute(argv) ⇒ Object 



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# File 'lib/echspec/cli/gen_configs.rb', line 4

def execute(argv)
  fpath = parse_options(argv)
  write(fpath)
end

#parse_options(argv) ⇒ Object 



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# File 'lib/echspec/cli/gen_configs.rb', line 9

def parse_options(argv)
  op = OptionParser.new

  op.banner = <<~USAGE
    Usage: echspec gen_configs {FILE}

    Generate an ECHConfig PEM file.

    Examples:

      $ echspec gen_configs echconfigs.pem
  USAGE

  begin
    args = op.parse(argv)
  rescue OptionParser::InvalidOption, OptionParser::MissingArgument => e
    warn op
    warn "** #{e.message}"
    exit 1
  end

  if args.length != 1
    warn op
    warn '** {FILE} argument is not specified'
    exit 1
  end
  args[0]
end

#write(fpath) ⇒ Object 



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# File 'lib/echspec/cli/gen_configs.rb', line 38

def write(fpath)
  hostname = 'localhost'

  key = OpenSSL::PKey.generate_key('X25519')
  echconfigs = ECHConfigList.new(
    [
      ECHConfig.new(
        "\xfe\x0d".b,
        ECHConfig::ECHConfigContents.new(
          ECHConfig::ECHConfigContents::HpkeKeyConfig.new(
            123,
            ECHConfig::ECHConfigContents::HpkeKeyConfig::HpkeKemId.new(HPKE::DHKEM_X25519_HKDF_SHA256),
            ECHConfig::ECHConfigContents::HpkeKeyConfig::HpkePublicKey.new(key.raw_public_key),
            [
              ECHConfig::ECHConfigContents::HpkeKeyConfig::HpkeSymmetricCipherSuite.new(
                ECHConfig::ECHConfigContents::HpkeKeyConfig::HpkeSymmetricCipherSuite::HpkeKdfId.new(HPKE::HKDF_SHA256),
                ECHConfig::ECHConfigContents::HpkeKeyConfig::HpkeSymmetricCipherSuite::HpkeAeadId.new(HPKE::AES_128_GCM)
              )
            ]
          ),
          32,
          hostname.b,
          ECHConfig::ECHConfigContents::Extensions.new('')
        )
      )
    ]
  )
  File.write(fpath, key.private_to_pem + echconfigs.to_pem)
end