5423e68d5d
Change the keystore to keep the private keys in keystore. When returned, it uses the OpenSSL representation of the key to allow users to use it in various operations through the OpenSSL ENGINE that connects to keystore. Change-Id: I3681f98cb2ec49ffc4a49f3821909313b4ab5735
302 lines
8.4 KiB
Java
302 lines
8.4 KiB
Java
/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.security;
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import android.net.LocalSocketAddress;
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import android.net.LocalSocket;
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import java.io.InputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.io.UnsupportedEncodingException;
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import java.nio.charset.Charsets;
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import java.util.ArrayList;
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/**
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* @hide This should not be made public in its present form because it
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* assumes that private and secret key bytes are available and would
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* preclude the use of hardware crypto.
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*/
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public class KeyStore {
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// ResponseCodes
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public static final int NO_ERROR = 1;
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public static final int LOCKED = 2;
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public static final int UNINITIALIZED = 3;
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public static final int SYSTEM_ERROR = 4;
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public static final int PROTOCOL_ERROR = 5;
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public static final int PERMISSION_DENIED = 6;
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public static final int KEY_NOT_FOUND = 7;
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public static final int VALUE_CORRUPTED = 8;
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public static final int UNDEFINED_ACTION = 9;
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public static final int WRONG_PASSWORD = 10;
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// States
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public enum State { UNLOCKED, LOCKED, UNINITIALIZED };
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private static final LocalSocketAddress sAddress = new LocalSocketAddress(
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"keystore", LocalSocketAddress.Namespace.RESERVED);
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private int mError = NO_ERROR;
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private KeyStore() {}
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public static KeyStore getInstance() {
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return new KeyStore();
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}
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public State state() {
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execute('t');
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switch (mError) {
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case NO_ERROR: return State.UNLOCKED;
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case LOCKED: return State.LOCKED;
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case UNINITIALIZED: return State.UNINITIALIZED;
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default: throw new AssertionError(mError);
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}
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}
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private byte[] get(byte[] key) {
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ArrayList<byte[]> values = execute('g', key);
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return (values == null || values.isEmpty()) ? null : values.get(0);
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}
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public byte[] get(String key) {
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return get(getBytes(key));
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}
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private boolean put(byte[] key, byte[] value) {
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execute('i', key, value);
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return mError == NO_ERROR;
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}
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public boolean put(String key, byte[] value) {
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return put(getBytes(key), value);
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}
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private boolean delete(byte[] key) {
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execute('d', key);
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return mError == NO_ERROR;
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}
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public boolean delete(String key) {
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return delete(getBytes(key));
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}
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private boolean contains(byte[] key) {
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execute('e', key);
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return mError == NO_ERROR;
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}
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public boolean contains(String key) {
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return contains(getBytes(key));
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}
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public byte[][] saw(byte[] prefix) {
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ArrayList<byte[]> values = execute('s', prefix);
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return (values == null) ? null : values.toArray(new byte[values.size()][]);
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}
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public String[] saw(String prefix) {
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byte[][] values = saw(getBytes(prefix));
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if (values == null) {
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return null;
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}
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String[] strings = new String[values.length];
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for (int i = 0; i < values.length; ++i) {
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strings[i] = toString(values[i]);
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}
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return strings;
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}
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public boolean reset() {
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execute('r');
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return mError == NO_ERROR;
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}
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private boolean password(byte[] password) {
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execute('p', password);
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return mError == NO_ERROR;
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}
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public boolean password(String password) {
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return password(getBytes(password));
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}
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public boolean lock() {
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execute('l');
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return mError == NO_ERROR;
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}
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private boolean unlock(byte[] password) {
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execute('u', password);
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return mError == NO_ERROR;
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}
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public boolean unlock(String password) {
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return unlock(getBytes(password));
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}
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public boolean isEmpty() {
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execute('z');
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return mError == KEY_NOT_FOUND;
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}
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private boolean generate(byte[] key) {
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execute('a', key);
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return mError == NO_ERROR;
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}
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public boolean generate(String key) {
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return generate(getBytes(key));
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}
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private boolean importKey(byte[] keyName, byte[] key) {
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execute('m', keyName, key);
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return mError == NO_ERROR;
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}
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public boolean importKey(String keyName, byte[] key) {
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return importKey(getBytes(keyName), key);
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}
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private byte[] getPubkey(byte[] key) {
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ArrayList<byte[]> values = execute('b', key);
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return (values == null || values.isEmpty()) ? null : values.get(0);
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}
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public byte[] getPubkey(String key) {
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return getPubkey(getBytes(key));
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}
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private boolean delKey(byte[] key) {
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execute('k', key);
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return mError == NO_ERROR;
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}
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public boolean delKey(String key) {
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return delKey(getBytes(key));
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}
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private byte[] sign(byte[] keyName, byte[] data) {
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final ArrayList<byte[]> values = execute('n', keyName, data);
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return (values == null || values.isEmpty()) ? null : values.get(0);
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}
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public byte[] sign(String key, byte[] data) {
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return sign(getBytes(key), data);
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}
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private boolean verify(byte[] keyName, byte[] data, byte[] signature) {
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execute('v', keyName, data, signature);
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return mError == NO_ERROR;
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}
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public boolean verify(String key, byte[] data, byte[] signature) {
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return verify(getBytes(key), data, signature);
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}
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private boolean grant(byte[] key, byte[] uid) {
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execute('x', key, uid);
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return mError == NO_ERROR;
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}
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public boolean grant(String key, int uid) {
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return grant(getBytes(key), Integer.toString(uid).getBytes());
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}
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private boolean ungrant(byte[] key, byte[] uid) {
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execute('y', key, uid);
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return mError == NO_ERROR;
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}
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public boolean ungrant(String key, int uid) {
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return ungrant(getBytes(key), Integer.toString(uid).getBytes());
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}
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public int getLastError() {
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return mError;
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}
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private ArrayList<byte[]> execute(int code, byte[]... parameters) {
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mError = PROTOCOL_ERROR;
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for (byte[] parameter : parameters) {
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if (parameter == null || parameter.length > 65535) {
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return null;
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}
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}
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LocalSocket socket = new LocalSocket();
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try {
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socket.connect(sAddress);
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OutputStream out = socket.getOutputStream();
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out.write(code);
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for (byte[] parameter : parameters) {
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out.write(parameter.length >> 8);
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out.write(parameter.length);
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out.write(parameter);
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}
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out.flush();
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socket.shutdownOutput();
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InputStream in = socket.getInputStream();
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if ((code = in.read()) != NO_ERROR) {
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if (code != -1) {
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mError = code;
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}
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return null;
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}
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ArrayList<byte[]> values = new ArrayList<byte[]>();
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while (true) {
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int i, j;
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if ((i = in.read()) == -1) {
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break;
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}
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if ((j = in.read()) == -1) {
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return null;
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}
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byte[] value = new byte[i << 8 | j];
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for (i = 0; i < value.length; i += j) {
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if ((j = in.read(value, i, value.length - i)) == -1) {
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return null;
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}
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}
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values.add(value);
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}
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mError = NO_ERROR;
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return values;
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} catch (IOException e) {
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// ignore
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} finally {
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try {
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socket.close();
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} catch (IOException e) {}
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}
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return null;
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}
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private static byte[] getBytes(String string) {
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return string.getBytes(Charsets.UTF_8);
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}
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private static String toString(byte[] bytes) {
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return new String(bytes, Charsets.UTF_8);
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}
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}
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