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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 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/. */
#include "nsISupports.idl"
[scriptable, uuid(57972956-5718-42d2-8070-b3fc72212eaf)]
interface nsIOSKeyStore: nsISupports {
/**
* This interface provides encryption and decryption operations for data at
* rest. The key used to encrypt and decrypt the data is stored in the OS
* key store.
*
* NB: To first authenticate the user to the system, use
* nsIOSReauthenticator.
*
* Usage:
*
* // obtain the singleton OSKeyStore instance
* const oskeystore = Cc["@mozilla.org/security/oskeystore;1"].getService(Ci.nsIOSKeyStore);
*
* const PASSWORD_LABEL = "mylabel1";
*
* // Check if there's a secret for your label already.
* if (!await oskeystore.asyncSecretAvailable(PASSWORD_LABEL)) {
* // Fail or generate a new secret for your label.
* // If you want to generate a new secret, do.
* // Hold onto `recoveryPhrase` to present to the user.
* let recoveryPhrase = await oskeystore.asyncGenerateSecret(PASSWORD_LABEL);
* }
*
* // Assuming there's a secret with your label. Encrypt/Decrypt as follows.
* let encryptedPasswordBytes = await oskeystore.asyncEncryptBytes(PASSWORD_LABEL, passwordBytes);
* let newPasswordBytes = await oskeystore.asyncDecryptBytes(PASSWORD_LABEL, encryptedPasswordBytes);
*
* // Delete the secret from the key store.
* await oskeystore.asyncDeleteSecret(PASSWORD_LABEL);
*
* // Recover a secret from a recovery code.
* await oskeystore.asyncRecoverSecret(PASSWORD_LABEL, recoveryPhrase);
*/
/**
* Generate a new secret and store it in the OS key store with the given label.
* The caller should make sure that no other secrets with the same label are
* present before calling this function.
* This invalidates all previous ciphertexts created with the key
* corresponding to the given label.
*
* @param label The label to use for the secret.
* @return Promise that resolves to the recoveryPhrase string used to generate
* the secret.
*/
[implicit_jscontext, must_use]
Promise asyncGenerateSecret(in ACString label);
/**
* Check whether a secret for a given label exists.
*
* @param label The label to lookup.
* @return Promise that resolves to a bool (whether a secret with label is
* known or not) or an error.
*/
[implicit_jscontext, must_use]
Promise asyncSecretAvailable(in ACString label);
/**
* Set a secret from a given recovery phrase.
* This might not be implemented on all platforms.
* This invalidates all previous ciphertexts.
*
* @param label The label to use for the secret.
* @param recoveryPhrase The recovery phrase that's used to generate the secret.
* @return Promise that resolves to undefined or an error.
*/
[implicit_jscontext, must_use]
Promise asyncRecoverSecret(in ACString label, in ACString recoveryPhrase);
/**
* Delete secret with a given label. If there is no secret with the given
* label, no action is taken.
*
* @param label The label of the secret to delete.
* @return Promise that resolves to undefined or an error.
*/
[implicit_jscontext, must_use]
Promise asyncDeleteSecret(in ACString label);
/**
* Encrypt the given data and then return the result as a base64-encoded
* string.
*
* @param label The label of the key to use to encrypt.
* @param inBytes The bytes to encrypt.
* @return Promise resolving to the encrypted text, encoded as Base64, or an
* error.
*/
[implicit_jscontext, must_use]
Promise asyncEncryptBytes(in ACString label, in Array<uint8_t> inBytes);
/**
* Decode and then decrypt the given base64-encoded string.
*
* @param label The label of the key to use to decrypt.
* @param encryptedBase64Text Encrypted input text, encoded as Base64.
* @return Promise resolving to the plaintext bytes or an error.
*/
[implicit_jscontext, must_use]
Promise asyncDecryptBytes(in ACString label, in ACString encryptedBase64Text);
/**
* Retrieve the recovery phrase from the key store.
*
* @param aLabel The label of the secret to retrieve.
* @return Promise resolving to the recovery phrase or an error.
*/
[implicit_jscontext, must_use]
Promise asyncGetRecoveryPhrase(in ACString aLabel);
};
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