fune/security/manager/ssl/tests/unit/test_keysize.js

// -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
"use strict";

// Checks that RSA certs with key sizes below 1024 bits are rejected.
// Checks that ECC certs using curves other than the NIST P-256, P-384 or P-521
// curves are rejected.

do_get_profile(); // must be called before getting nsIX509CertDB
const certdb = Cc["@mozilla.org/security/x509certdb;1"].getService(
  Ci.nsIX509CertDB
);

/**
 * Tests a cert chain.
 *
 * @param {String} rootKeyType
 *        The key type of the root certificate, or the name of an elliptic
 *        curve, as output by the 'openssl ecparam -list_curves' command.
 * @param {Number} rootKeySize
 * @param {String} intKeyType
 * @param {Number} intKeySize
 * @param {String} eeKeyType
 * @param {Number} eeKeySize
 * @param {PRErrorCode} eeExpectedError
 * @return {Promise} a promise that will resolve when the verification has
 *                   completed
 */
function checkChain(
  rootKeyType,
  rootKeySize,
  intKeyType,
  intKeySize,
  eeKeyType,
  eeKeySize,
  eeExpectedError
) {
  let rootName = "root_" + rootKeyType + "_" + rootKeySize;
  let intName = "int_" + intKeyType + "_" + intKeySize;
  let eeName = "ee_" + eeKeyType + "_" + eeKeySize;

  let intFullName = intName + "-" + rootName;
  let eeFullName = eeName + "-" + intName + "-" + rootName;

  addCertFromFile(certdb, `test_keysize/${rootName}.pem`, "CTu,CTu,CTu");
  addCertFromFile(certdb, `test_keysize/${intFullName}.pem`, ",,");
  let eeCert = constructCertFromFile(`test_keysize/${eeFullName}.pem`);

  info("cert o=" + eeCert.organization);
  info("cert issuer o=" + eeCert.issuerOrganization);
  return checkCertErrorGeneric(
    certdb,
    eeCert,
    eeExpectedError,
    certificateUsageSSLServer
  );
}

/**
 * Tests various RSA chains.
 *
 * @param {Number} inadequateKeySize
 * @param {Number} adequateKeySize
 */
async function checkRSAChains(inadequateKeySize, adequateKeySize) {
  // Chain with certs that have adequate sizes for DV
  await checkChain(
    "rsa",
    adequateKeySize,
    "rsa",
    adequateKeySize,
    "rsa",
    adequateKeySize,
    PRErrorCodeSuccess
  );

  // Chain with a root cert that has an inadequate size for DV
  await checkChain(
    "rsa",
    inadequateKeySize,
    "rsa",
    adequateKeySize,
    "rsa",
    adequateKeySize,
    MOZILLA_PKIX_ERROR_INADEQUATE_KEY_SIZE
  );

  // Chain with an intermediate cert that has an inadequate size for DV
  await checkChain(
    "rsa",
    adequateKeySize,
    "rsa",
    inadequateKeySize,
    "rsa",
    adequateKeySize,
    MOZILLA_PKIX_ERROR_INADEQUATE_KEY_SIZE
  );

  // Chain with an end entity cert that has an inadequate size for DV
  await checkChain(
    "rsa",
    adequateKeySize,
    "rsa",
    adequateKeySize,
    "rsa",
    inadequateKeySize,
    MOZILLA_PKIX_ERROR_INADEQUATE_KEY_SIZE
  );
}

async function checkECCChains() {
  await checkChain(
    "secp256r1",
    256,
    "secp384r1",
    384,
    "secp521r1",
    521,
    PRErrorCodeSuccess
  );
  await checkChain(
    "secp256r1",
    256,
    "secp224r1",
    224,
    "secp256r1",
    256,
    SEC_ERROR_UNSUPPORTED_ELLIPTIC_CURVE
  );
  await checkChain(
    "secp256r1",
    256,
    "secp256r1",
    256,
    "secp224r1",
    224,
    SEC_ERROR_UNSUPPORTED_ELLIPTIC_CURVE
  );
  await checkChain(
    "secp224r1",
    224,
    "secp256r1",
    256,
    "secp256r1",
    256,
    SEC_ERROR_UNSUPPORTED_ELLIPTIC_CURVE
  );
  await checkChain(
    "secp256r1",
    256,
    "secp256r1",
    256,
    "secp256k1",
    256,
    SEC_ERROR_UNSUPPORTED_ELLIPTIC_CURVE
  );
  await checkChain(
    "secp256k1",
    256,
    "secp256r1",
    256,
    "secp256r1",
    256,
    SEC_ERROR_UNSUPPORTED_ELLIPTIC_CURVE
  );
}

async function checkCombinationChains() {
  await checkChain(
    "rsa",
    2048,
    "secp256r1",
    256,
    "secp384r1",
    384,
    PRErrorCodeSuccess
  );
  await checkChain(
    "rsa",
    2048,
    "secp256r1",
    256,
    "secp224r1",
    224,
    SEC_ERROR_UNSUPPORTED_ELLIPTIC_CURVE
  );
  await checkChain(
    "secp256r1",
    256,
    "rsa",
    1016,
    "secp256r1",
    256,
    MOZILLA_PKIX_ERROR_INADEQUATE_KEY_SIZE
  );
}

add_task(async function() {
  await checkRSAChains(1016, 1024);
  await checkECCChains();
  await checkCombinationChains();
});