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/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is Mozilla Foundation.
 * Portions created by the Initial Developer are Copyright (C) 2009
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *  Justin Dolske <dolske@mozilla.com> (original author)
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */


#include "nsISupports.idl"

[scriptable, uuid(2030770e-542e-40cd-8061-cd9d4ad4227f)]

interface nsILoginManagerCrypto : nsISupports {

    const unsigned long ENCTYPE_BASE64 = 0;
    const unsigned long ENCTYPE_SDR = 1;

    /**
     * encrypt
     *
     * @param plainText
     *        The string to be encrypted.
     *
     * Encrypts the specified string, returning the ciphertext value.
     *
     * NOTE: The current implemention of this inferface simply uses NSS/PSM's
     * "Secret Decoder Ring" service. It is not recommended for general
     * purpose encryption/decryption.
     *
     * Can throw if the user cancels entry of their master password.
     */
    AString encrypt(in AString plainText);

    /**
     * decrypt
     *
     * @param cipherText
     *        The string to be decrypted.
     *
     * Decrypts the specified string, returning the plaintext value.
     *
     * Can throw if the user cancels entry of their master password, or if the
     * cipherText value can not be successfully decrypted (eg, if it was
     * encrypted with some other key).
     */
    AString decrypt(in AString cipherText);

    /**
     * uiBusy
     *
     * True when a master password prompt is being displayed.
     */
    readonly attribute boolean uiBusy;

    /**
     * isLoggedIn
     *
     * Current login state of the token used for encryption. If the user is
     * not logged in, performing a crypto operation will result in a master
     * password prompt.
     */
    readonly attribute boolean isLoggedIn;

    /**
     * defaultEncType
     *
     * Default encryption type used by an implementation of this interface.
     */
    readonly attribute unsigned long defaultEncType;
};