Gem::Security.create_key

# File tmp/rubies/ruby-3.1.3/lib/rubygems/security.rb, line 487
def self.create_key(algorithm)
  if defined?(OpenSSL::PKey)
    case algorithm.downcase
    when "dsa"
      OpenSSL::PKey::DSA.new(RSA_DSA_KEY_LENGTH)
    when "rsa"
      OpenSSL::PKey::RSA.new(RSA_DSA_KEY_LENGTH)
    when "ec"
      if RUBY_VERSION >= "2.4.0"
        OpenSSL::PKey::EC.generate(EC_NAME)
      else
        domain_key = OpenSSL::PKey::EC.new(EC_NAME)
        domain_key.generate_key
        domain_key
      end
    else
      raise Gem::Security::Exception,
      "#{algorithm} algorithm not found. RSA, DSA, and EC algorithms are supported."
    end
  end
end