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1 /*
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2 * ConnectBot: simple, powerful, open-source SSH client for Android
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3 * Copyright 2007 Kenny Root, Jeffrey Sharkey
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4 *
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5 * Licensed under the Apache License, Version 2.0 (the "License");
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6 * you may not use this file except in compliance with the License.
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7 * You may obtain a copy of the License at
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8 *
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9 * http://www.apache.org/licenses/LICENSE-2.0
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10 *
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11 * Unless required by applicable law or agreed to in writing, software
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12 * distributed under the License is distributed on an "AS IS" BASIS,
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13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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14 * See the License for the specific language governing permissions and
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15 * limitations under the License.
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16 */
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17
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18 package com.five_ten_sg.connectbot.bean;
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19
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20 import java.security.NoSuchAlgorithmException;
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21 import java.security.PrivateKey;
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22 import java.security.PublicKey;
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23 import java.security.interfaces.ECPublicKey;
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24 import java.security.interfaces.RSAPublicKey;
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25 import java.security.spec.InvalidKeySpecException;
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26
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27 import com.five_ten_sg.connectbot.util.PubkeyDatabase;
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28 import com.five_ten_sg.connectbot.util.PubkeyUtils;
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29 import android.content.ContentValues;
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30
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31 /**
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32 * @author Kenny Root
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33 *
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34 */
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35 public class PubkeyBean extends AbstractBean {
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36 public static final String BEAN_NAME = "pubkey";
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37
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38 private static final String KEY_TYPE_RSA = "RSA";
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39
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40 private static final String KEY_TYPE_DSA = "DSA";
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41
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42 private static final String KEY_TYPE_EC = "EC";
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43
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44 /* Database fields */
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45 private long id;
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46 private String nickname;
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47 private String type;
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48 private byte[] privateKey;
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49 private byte[] publicKey;
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50 private boolean encrypted = false;
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51 private boolean startup = false;
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52 private boolean confirmUse = false;
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53 private int lifetime = 0;
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54
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55 /* Transient values */
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56 private transient boolean unlocked = false;
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57 private transient Object unlockedPrivate = null;
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58 private transient String description;
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59
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60 @Override
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61 public String getBeanName() {
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62 return BEAN_NAME;
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63 }
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64
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65 public void setId(long id) {
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66 this.id = id;
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67 }
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68
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69 public long getId() {
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70 return id;
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71 }
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72
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73 public void setNickname(String nickname) {
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74 this.nickname = nickname;
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75 }
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76
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77 public String getNickname() {
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78 return nickname;
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79 }
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80
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81 public void setType(String type) {
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82 this.type = type;
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83 }
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84
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85 public String getType() {
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86 return type;
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87 }
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88
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89 public void setPrivateKey(byte[] privateKey) {
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90 if (privateKey == null)
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91 this.privateKey = null;
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92 else
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93 this.privateKey = privateKey.clone();
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94 }
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95
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96 public byte[] getPrivateKey() {
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97 if (privateKey == null)
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98 return null;
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99 else
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100 return privateKey.clone();
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101 }
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102
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103 public void setPublicKey(byte[] encoded) {
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104 if (encoded == null)
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105 publicKey = null;
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106 else
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107 publicKey = encoded.clone();
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108 }
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109
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110 public byte[] getPublicKey() {
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111 if (publicKey == null)
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112 return null;
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113 else
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114 return publicKey.clone();
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115 }
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116
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117 public void setEncrypted(boolean encrypted) {
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118 this.encrypted = encrypted;
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119 }
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120
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121 public boolean isEncrypted() {
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122 return encrypted;
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123 }
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124
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125 public void setStartup(boolean startup) {
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126 this.startup = startup;
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127 }
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128
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129 public boolean isStartup() {
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130 return startup;
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131 }
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132
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133 public void setConfirmUse(boolean confirmUse) {
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134 this.confirmUse = confirmUse;
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135 }
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136
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137 public boolean isConfirmUse() {
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138 return confirmUse;
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139 }
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140
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141 public void setLifetime(int lifetime) {
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142 this.lifetime = lifetime;
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143 }
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144
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145 public int getLifetime() {
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146 return lifetime;
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147 }
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148
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149 public void setUnlocked(boolean unlocked) {
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150 this.unlocked = unlocked;
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151 }
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152
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153 public boolean isUnlocked() {
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154 return unlocked;
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155 }
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156
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157 public void setUnlockedPrivate(Object unlockedPrivate) {
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158 this.unlockedPrivate = unlockedPrivate;
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159 }
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160
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161 public Object getUnlockedPrivate() {
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162 return unlockedPrivate;
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163 }
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164
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165 public String getDescription() {
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166 if (description == null) {
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167 final StringBuilder sb = new StringBuilder();
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168
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169 try {
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170 final PublicKey pubKey = PubkeyUtils.decodePublic(privateKey, type);
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171
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172 if (PubkeyDatabase.KEY_TYPE_RSA.equals(type)) {
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173 int bits = ((RSAPublicKey) pubKey).getModulus().bitLength();
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174 sb.append("RSA ");
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175 sb.append(bits);
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176 sb.append("-bit");
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177 }
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178 else if (PubkeyDatabase.KEY_TYPE_DSA.equals(type)) {
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179 sb.append("DSA 1024-bit");
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180 }
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181 else if (PubkeyDatabase.KEY_TYPE_EC.equals(type)) {
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182 int bits = ((ECPublicKey) pubKey).getParams().getCurve().getField()
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183 .getFieldSize();
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184 sb.append("EC ");
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185 sb.append(bits);
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186 sb.append("-bit");
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187 }
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188 else {
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189 sb.append("Unknown Key Type");
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190 }
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191 }
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192 catch (NoSuchAlgorithmException e) {
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193 sb.append("Unknown Key Type");
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194 }
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195 catch (InvalidKeySpecException e) {
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196 sb.append("Unknown Key Type");
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197 }
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198
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199 if (encrypted) sb.append(" (encrypted)");
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200
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201 description = sb.toString();
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202 }
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203
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204 return description;
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205 }
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206
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207 /* (non-Javadoc)
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208 * @see com.five_ten_sg.connectbot.bean.AbstractBean#getValues()
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209 */
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210 @Override
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211 public ContentValues getValues() {
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212 ContentValues values = new ContentValues();
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213 values.put(PubkeyDatabase.FIELD_PUBKEY_NICKNAME, nickname);
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214 values.put(PubkeyDatabase.FIELD_PUBKEY_TYPE, type);
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215 values.put(PubkeyDatabase.FIELD_PUBKEY_PRIVATE, privateKey);
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216 values.put(PubkeyDatabase.FIELD_PUBKEY_PUBLIC, publicKey);
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217 values.put(PubkeyDatabase.FIELD_PUBKEY_ENCRYPTED, encrypted ? 1 : 0);
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218 values.put(PubkeyDatabase.FIELD_PUBKEY_STARTUP, startup ? 1 : 0);
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219 values.put(PubkeyDatabase.FIELD_PUBKEY_CONFIRMUSE, confirmUse ? 1 : 0);
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220 values.put(PubkeyDatabase.FIELD_PUBKEY_LIFETIME, lifetime);
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221 return values;
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222 }
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223
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224 public boolean changePassword(String oldPassword, String newPassword) throws Exception {
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225 PrivateKey priv;
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226
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227 try {
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228 priv = PubkeyUtils.decodePrivate(getPrivateKey(), getType(), oldPassword);
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229 }
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230 catch (Exception e) {
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231 return false;
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232 }
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233
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234 setPrivateKey(PubkeyUtils.getEncodedPrivate(priv, newPassword));
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235 setEncrypted(newPassword.length() > 0);
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236 return true;
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237 }
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238 }
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