let cryptoSvc;
try {
  Components.utils.import("resource://services-crypto/WeaveCrypto.js");
  cryptoSvc = new WeaveCrypto();
} catch (ex) {
  // Fallback to binary WeaveCrypto
  cryptoSvc = Cc["@labs.mozilla.com/Weave/Crypto;1"]
                .getService(Ci.IWeaveCrypto);
}

Cu.import("resource://services-sync/util.js");

function run_test() {
  if (this.gczeal) {
    _("Running deriveKey tests with gczeal(2).");
    gczeal(2);
  } else {
    _("Running deriveKey tests with default gczeal.");
  }

  var iv = cryptoSvc.generateRandomIV();
  var der_passphrase = "secret phrase";
  var der_salt = "RE5YUHpQcGl3bg==";   // btoa("DNXPzPpiwn")
  
  _("Testing deriveKeyFromPassphrase. Input is \"" + der_passphrase + "\", \"" + der_salt + "\" (base64-encoded).");
  
  // Test friendly-ing.
  do_check_eq("abcdefghijk8mn9pqrstuvwxyz234567",
              Utils.base32ToFriendly("ABCDEFGHIJKLMNOPQRSTUVWXYZ234567"));
  do_check_eq("ABCDEFGHIJKLMNOPQRSTUVWXYZ234567",
              Utils.base32FromFriendly(
                Utils.base32ToFriendly("ABCDEFGHIJKLMNOPQRSTUVWXYZ234567")));
  
  // Test translation.
  do_check_false(Utils.isPassphrase("o-5wmnu-o5tqc-7lz2h-amkbw-izqzi"));  // Wrong charset.
  do_check_false(Utils.isPassphrase("O-5WMNU-O5TQC-7LZ2H-AMKBW-IZQZI"));  // Wrong charset.
  do_check_true(Utils.isPassphrase("9-5wmnu-95tqc-78z2h-amkbw-izqzi"));
  do_check_true(Utils.isPassphrase("9-5WMNU-95TQC-78Z2H-AMKBW-IZQZI"));   // isPassphrase normalizes.
  do_check_true(Utils.isPassphrase(
      Utils.normalizePassphrase("9-5WMNU-95TQC-78Z2H-AMKBW-IZQZI")));
    
  // Base64. We don't actually use this in anger, particularly not with a 32-byte key.
  var der_key = Utils.deriveEncodedKeyFromPassphrase(der_passphrase, der_salt);
  _("Derived key in base64: " + der_key);
  do_check_eq(cryptoSvc.decrypt(cryptoSvc.encrypt("bacon", der_key, iv), der_key, iv), "bacon");
  
  // Base64, 16-byte output.
  var der_key = Utils.deriveEncodedKeyFromPassphrase(der_passphrase, der_salt, 16);
  _("Derived key in base64: " + der_key);
  do_check_eq("d2zG0d2cBfXnRwMUGyMwyg==", der_key);
  do_check_eq(cryptoSvc.decrypt(cryptoSvc.encrypt("bacon", der_key, iv), der_key, iv), "bacon");

  // Base32. Again, specify '16' to avoid it generating a 256-bit key string.
  var b32key = Utils.derivePresentableKeyFromPassphrase(der_passphrase, der_salt, 16);
  var hyphenated = Utils.hyphenatePassphrase(b32key);
  do_check_true(Utils.isPassphrase(b32key));
  
  _("Derived key in base32: " + b32key);
  do_check_eq(b32key.length, 26);
  do_check_eq(hyphenated.length, 31);  // 1 char, plus 5 groups of 5, hyphenated = 5 + (5*5) + 1 = 31.
  do_check_eq(hyphenated, "9-5wmnu-95tqc-78z2h-amkbw-izqzi");

  if (this.gczeal)
    gczeal(0);

  // Test the equivalence of our NSS and JS versions.
  // Will only work on FF4, of course.
  // Note that we don't add gczeal here: the pure-JS implementation is
  // astonishingly slow, and this check takes five minutes to run.
  do_check_eq(
      Utils.deriveEncodedKeyFromPassphrase(der_passphrase, der_salt, 16, false),
      Utils.deriveEncodedKeyFromPassphrase(der_passphrase, der_salt, 16, true));
}
