annotate src/com/five_ten_sg/connectbot/util/PubkeyUtils.java @ 130:2a0b10fd128d

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author Carl Byington <carl@five-ten-sg.com>
date Thu, 19 Jun 2014 09:56:25 -0700
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children 91a31873c42a
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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.util;
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19
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20 import java.io.IOException;
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21 import java.math.BigInteger;
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22 import java.security.AlgorithmParameters;
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23 import java.security.InvalidAlgorithmParameterException;
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24 import java.security.InvalidKeyException;
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25 import java.security.Key;
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26 import java.security.KeyFactory;
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27 import java.security.KeyPair;
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28 import java.security.MessageDigest;
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29 import java.security.NoSuchAlgorithmException;
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30 import java.security.PrivateKey;
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31 import java.security.PublicKey;
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32 import java.security.SecureRandom;
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33 import java.security.interfaces.DSAParams;
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34 import java.security.interfaces.DSAPrivateKey;
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35 import java.security.interfaces.DSAPublicKey;
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36 import java.security.interfaces.ECPrivateKey;
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37 import java.security.interfaces.ECPublicKey;
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38 import java.security.interfaces.RSAPrivateCrtKey;
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39 import java.security.interfaces.RSAPublicKey;
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40 import java.security.spec.DSAPublicKeySpec;
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41 import java.security.spec.ECParameterSpec;
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42 import java.security.spec.ECPoint;
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43 import java.security.spec.ECPublicKeySpec;
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44 import java.security.spec.InvalidKeySpecException;
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45 import java.security.spec.InvalidParameterSpecException;
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46 import java.security.spec.KeySpec;
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47 import java.security.spec.PKCS8EncodedKeySpec;
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48 import java.security.spec.RSAPublicKeySpec;
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49 import java.security.spec.X509EncodedKeySpec;
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50 import java.util.Arrays;
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51
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52 import javax.crypto.BadPaddingException;
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53 import javax.crypto.Cipher;
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54 import javax.crypto.EncryptedPrivateKeyInfo;
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55 import javax.crypto.IllegalBlockSizeException;
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56 import javax.crypto.NoSuchPaddingException;
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57 import javax.crypto.SecretKeyFactory;
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58 import javax.crypto.spec.PBEKeySpec;
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59 import javax.crypto.spec.PBEParameterSpec;
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60 import javax.crypto.spec.SecretKeySpec;
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61
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62 import org.keyczar.jce.EcCore;
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63
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64 import com.five_ten_sg.connectbot.bean.PubkeyBean;
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65 import android.util.Log;
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66
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67 import com.trilead.ssh2.crypto.Base64;
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68 import com.trilead.ssh2.crypto.SimpleDERReader;
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69 import com.trilead.ssh2.signature.DSASHA1Verify;
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70 import com.trilead.ssh2.signature.ECDSASHA2Verify;
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71 import com.trilead.ssh2.signature.RSASHA1Verify;
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72
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73 public class PubkeyUtils {
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74 private static final String TAG = "PubkeyUtils";
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75
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76 public static final String PKCS8_START = "-----BEGIN PRIVATE KEY-----";
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77 public static final String PKCS8_END = "-----END PRIVATE KEY-----";
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78
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79 // Size in bytes of salt to use.
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80 private static final int SALT_SIZE = 8;
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81
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82 // Number of iterations for password hashing. PKCS#5 recommends 1000
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83 private static final int ITERATIONS = 1000;
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84
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85 // Cannot be instantiated
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86 private PubkeyUtils() {
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87 }
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88
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89 public static String formatKey(Key key) {
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90 String algo = key.getAlgorithm();
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91 String fmt = key.getFormat();
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92 byte[] encoded = key.getEncoded();
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93 return "Key[algorithm=" + algo + ", format=" + fmt +
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94 ", bytes=" + encoded.length + "]";
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95 }
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96
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97 public static byte[] sha256(byte[] data) throws NoSuchAlgorithmException {
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98 return MessageDigest.getInstance("SHA-256").digest(data);
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99 }
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100
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101 public static byte[] cipher(int mode, byte[] data, byte[] secret) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
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102 SecretKeySpec secretKeySpec = new SecretKeySpec(sha256(secret), "AES");
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103 Cipher c = Cipher.getInstance("AES");
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104 c.init(mode, secretKeySpec);
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105 return c.doFinal(data);
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106 }
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107
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108 public static byte[] encrypt(byte[] cleartext, String secret) throws Exception {
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109 byte[] salt = new byte[SALT_SIZE];
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110 byte[] ciphertext = Encryptor.encrypt(salt, ITERATIONS, secret, cleartext);
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111 byte[] complete = new byte[salt.length + ciphertext.length];
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112 System.arraycopy(salt, 0, complete, 0, salt.length);
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113 System.arraycopy(ciphertext, 0, complete, salt.length, ciphertext.length);
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114 Arrays.fill(salt, (byte) 0x00);
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115 Arrays.fill(ciphertext, (byte) 0x00);
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116 return complete;
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117 }
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118
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119 public static byte[] decrypt(byte[] saltAndCiphertext, String secret) throws Exception {
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120 try {
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121 byte[] salt = new byte[SALT_SIZE];
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122 byte[] ciphertext = new byte[saltAndCiphertext.length - salt.length];
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123 System.arraycopy(saltAndCiphertext, 0, salt, 0, salt.length);
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124 System.arraycopy(saltAndCiphertext, salt.length, ciphertext, 0, ciphertext.length);
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125 return Encryptor.decrypt(salt, ITERATIONS, secret, ciphertext);
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126 }
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127 catch (Exception e) {
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128 Log.d("decrypt", "Could not decrypt with new method", e);
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129 // We might be using the old encryption method.
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130 return cipher(Cipher.DECRYPT_MODE, saltAndCiphertext, secret.getBytes());
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131 }
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132 }
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133
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134 public static byte[] getEncodedPrivate(PrivateKey pk, String secret) throws Exception {
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135 final byte[] encoded = pk.getEncoded();
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136
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137 if (secret == null || secret.length() == 0) {
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138 return encoded;
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139 }
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140
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141 return encrypt(pk.getEncoded(), secret);
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142 }
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143
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144 public static PrivateKey decodePrivate(byte[] encoded, String keyType) throws NoSuchAlgorithmException, InvalidKeySpecException {
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145 PKCS8EncodedKeySpec privKeySpec = new PKCS8EncodedKeySpec(encoded);
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146 KeyFactory kf = KeyFactory.getInstance(keyType);
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147 return kf.generatePrivate(privKeySpec);
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148 }
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149
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150 public static PrivateKey decodePrivate(byte[] encoded, String keyType, String secret) throws Exception {
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151 if (secret != null && secret.length() > 0)
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152 return decodePrivate(decrypt(encoded, secret), keyType);
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153 else
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154 return decodePrivate(encoded, keyType);
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155 }
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156
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157 public static PublicKey decodePublic(byte[] encoded, String keyType) throws NoSuchAlgorithmException, InvalidKeySpecException {
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158 X509EncodedKeySpec pubKeySpec = new X509EncodedKeySpec(encoded);
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159 KeyFactory kf = KeyFactory.getInstance(keyType);
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160 return kf.generatePublic(pubKeySpec);
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161 }
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diff changeset
162
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
163 static String getAlgorithmForOid(String oid) throws NoSuchAlgorithmException {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
164 if ("1.2.840.10045.2.1".equals(oid)) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
165 return "EC";
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
166 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
167 else if ("1.2.840.113549.1.1.1".equals(oid)) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
168 return "RSA";
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
169 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
170 else if ("1.2.840.10040.4.1".equals(oid)) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
171 return "DSA";
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
172 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
173 else {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
174 throw new NoSuchAlgorithmException("Unknown algorithm OID " + oid);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
175 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
176 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
177
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
178 static String getOidFromPkcs8Encoded(byte[] encoded) throws NoSuchAlgorithmException {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
179 if (encoded == null) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
180 throw new NoSuchAlgorithmException("encoding is null");
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
181 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
182
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
183 try {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
184 SimpleDERReader reader = new SimpleDERReader(encoded);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
185 reader.resetInput(reader.readSequenceAsByteArray());
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
186 reader.readInt();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
187 reader.resetInput(reader.readSequenceAsByteArray());
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
188 return reader.readOid();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
189 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
190 catch (IOException e) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
191 Log.w(TAG, "Could not read OID", e);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
192 throw new NoSuchAlgorithmException("Could not read key", e);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
193 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
194 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
195
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
196 public static KeyPair recoverKeyPair(byte[] encoded) throws NoSuchAlgorithmException,
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
197 InvalidKeySpecException {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
198 final String algo = getAlgorithmForOid(getOidFromPkcs8Encoded(encoded));
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
199 final KeySpec privKeySpec = new PKCS8EncodedKeySpec(encoded);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
200 final KeyFactory kf = KeyFactory.getInstance(algo);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
201 final PrivateKey priv = kf.generatePrivate(privKeySpec);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
202 return new KeyPair(recoverPublicKey(kf, priv), priv);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
203 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
204
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
205
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
206 static PublicKey recoverPublicKey(KeyFactory kf, PrivateKey priv)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
207 throws NoSuchAlgorithmException, InvalidKeySpecException {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
208 if (priv instanceof RSAPrivateCrtKey) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
209 RSAPrivateCrtKey rsaPriv = (RSAPrivateCrtKey) priv;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
210 return kf.generatePublic(new RSAPublicKeySpec(rsaPriv.getModulus(), rsaPriv
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
211 .getPublicExponent()));
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
212 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
213 else if (priv instanceof DSAPrivateKey) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
214 DSAPrivateKey dsaPriv = (DSAPrivateKey) priv;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
215 DSAParams params = dsaPriv.getParams();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
216 // Calculate public key Y
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
217 BigInteger y = params.getG().modPow(dsaPriv.getX(), params.getP());
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
218 return kf.generatePublic(new DSAPublicKeySpec(y, params.getP(), params.getQ(), params
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
219 .getG()));
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
220 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
221 else if (priv instanceof ECPrivateKey) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
222 ECPrivateKey ecPriv = (ECPrivateKey) priv;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
223 ECParameterSpec params = ecPriv.getParams();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
224 // Calculate public key Y
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
225 ECPoint generator = params.getGenerator();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
226 BigInteger[] wCoords = EcCore.multiplyPointA(new BigInteger[] { generator.getAffineX(),
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
227 generator.getAffineY()
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
228 }, ecPriv.getS(), params);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
229 ECPoint w = new ECPoint(wCoords[0], wCoords[1]);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
230 return kf.generatePublic(new ECPublicKeySpec(w, params));
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
231 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
232 else {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
233 throw new NoSuchAlgorithmException("Key type must be RSA, DSA, or EC");
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
234 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
235 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
236
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
237 /*
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
238 * OpenSSH compatibility methods
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
239 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
240
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
241 public static String convertToOpenSSHFormat(PublicKey pk, String origNickname) throws IOException, InvalidKeyException {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
242 String nickname = origNickname;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
243
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
244 if (nickname == null)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
245 nickname = "connectbot@android";
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
246
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
247 if (pk instanceof RSAPublicKey) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
248 String data = "ssh-rsa ";
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
249 data += String.valueOf(Base64.encode(RSASHA1Verify.encodeSSHRSAPublicKey((RSAPublicKey) pk)));
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
250 return data + " " + nickname;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
251 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
252 else if (pk instanceof DSAPublicKey) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
253 String data = "ssh-dss ";
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
254 data += String.valueOf(Base64.encode(DSASHA1Verify.encodeSSHDSAPublicKey((DSAPublicKey) pk)));
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
255 return data + " " + nickname;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
256 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
257 else if (pk instanceof ECPublicKey) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
258 ECPublicKey ecPub = (ECPublicKey) pk;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
259 String keyType = ECDSASHA2Verify.getCurveName(ecPub.getParams().getCurve().getField().getFieldSize());
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
260 String keyData = String.valueOf(Base64.encode(ECDSASHA2Verify.encodeSSHECDSAPublicKey(ecPub)));
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
261 return ECDSASHA2Verify.ECDSA_SHA2_PREFIX + keyType + " " + keyData + " " + nickname;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
262 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
263
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
264 throw new InvalidKeyException("Unknown key type");
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
265 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
266
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
267 /*
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
268 * OpenSSH compatibility methods
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
269 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
270
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
271 /**
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
272 * @param pair
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
273 * @return OpenSSH-encoded pubkey
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
274 */
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
275 public static byte[] extractOpenSSHPublic(KeyPair pair) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
276 try {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
277 PublicKey pubKey = pair.getPublic();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
278
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
279 if (pubKey instanceof RSAPublicKey) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
280 return RSASHA1Verify.encodeSSHRSAPublicKey((RSAPublicKey) pair.getPublic());
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
281 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
282 else if (pubKey instanceof DSAPublicKey) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
283 return DSASHA1Verify.encodeSSHDSAPublicKey((DSAPublicKey) pair.getPublic());
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
284 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
285 else if (pubKey instanceof ECPublicKey) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
286 return ECDSASHA2Verify.encodeSSHECDSAPublicKey((ECPublicKey) pair.getPublic());
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
287 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
288 else {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
289 return null;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
290 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
291 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
292 catch (IOException e) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
293 return null;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
294 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
295 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
296
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
297 public static String exportPEM(PrivateKey key, String secret) throws NoSuchAlgorithmException, InvalidParameterSpecException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, InvalidKeySpecException, IllegalBlockSizeException, IOException {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
298 StringBuilder sb = new StringBuilder();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
299 byte[] data = key.getEncoded();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
300 sb.append(PKCS8_START);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
301 sb.append('\n');
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
302
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
303 if (secret != null) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
304 byte[] salt = new byte[8];
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
305 SecureRandom random = new SecureRandom();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
306 random.nextBytes(salt);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
307 PBEParameterSpec defParams = new PBEParameterSpec(salt, 1);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
308 AlgorithmParameters params = AlgorithmParameters.getInstance(key.getAlgorithm());
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
309 params.init(defParams);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
310 PBEKeySpec pbeSpec = new PBEKeySpec(secret.toCharArray());
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
311 SecretKeyFactory keyFact = SecretKeyFactory.getInstance(key.getAlgorithm());
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
312 Cipher cipher = Cipher.getInstance(key.getAlgorithm());
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
313 cipher.init(Cipher.WRAP_MODE, keyFact.generateSecret(pbeSpec), params);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
314 byte[] wrappedKey = cipher.wrap(key);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
315 EncryptedPrivateKeyInfo pinfo = new EncryptedPrivateKeyInfo(params, wrappedKey);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
316 data = pinfo.getEncoded();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
317 sb.append("Proc-Type: 4,ENCRYPTED\n");
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
318 sb.append("DEK-Info: DES-EDE3-CBC,");
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
319 sb.append(encodeHex(salt));
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
320 sb.append("\n\n");
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
321 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
322
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
323 int i = sb.length();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
324 sb.append(Base64.encode(data));
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
325
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
326 for (i += 63; i < sb.length(); i += 64) {
0ce5cc452d02 initial version
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327 sb.insert(i, "\n");
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328 }
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329
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330 sb.append('\n');
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331 sb.append(PKCS8_END);
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332 sb.append('\n');
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333 return sb.toString();
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334 }
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Carl Byington <carl@five-ten-sg.com>
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335
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336 private static final char[] HEX_DIGITS = { '0', '1', '2', '3', '4', '5', '6',
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337 '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
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338 };
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Carl Byington <carl@five-ten-sg.com>
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339 protected static String encodeHex(byte[] bytes) {
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340 final char[] hex = new char[bytes.length * 2];
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341 int i = 0;
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342
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343 for (byte b : bytes) {
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344 hex[i++] = HEX_DIGITS[(b >> 4) & 0x0f];
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345 hex[i++] = HEX_DIGITS[b & 0x0f];
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346 }
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347
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348 return String.valueOf(hex);
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349 }
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350
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351 public static String getPubkeyString(PubkeyBean pubkey) {
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352 try {
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353 PublicKey pk = decodePublic(pubkey.getPublicKey(), pubkey.getType());
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354 return convertToOpenSSHFormat(pk, pubkey.getNickname());
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355 }
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356 catch (Exception e) {
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357 e.printStackTrace();
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Carl Byington <carl@five-ten-sg.com>
parents:
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358 }
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Carl Byington <carl@five-ten-sg.com>
parents:
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359
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Carl Byington <carl@five-ten-sg.com>
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360 return null;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
361 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
362
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Carl Byington <carl@five-ten-sg.com>
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363 public static String getPrivkeyString(PubkeyBean pubkey, String passphrase) {
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364 String data = null;
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Carl Byington <carl@five-ten-sg.com>
parents:
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365 boolean imported = PubkeyDatabase.KEY_TYPE_IMPORTED.equals(pubkey.getType());
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
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366
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Carl Byington <carl@five-ten-sg.com>
parents:
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367 if (imported)
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
368 try {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
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369 data = new String(pubkey.getPrivateKey());
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
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370 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
371 catch (Exception e) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
372 e.printStackTrace();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
373 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
374 else {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
375 try {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
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376 PrivateKey pk = null;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
377
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
378 if (passphrase == null)
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parents:
diff changeset
379 pk = decodePrivate(pubkey.getPrivateKey(), pubkey.getType());
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
380 else
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
381 pk = decodePrivate(pubkey.getPrivateKey(), pubkey.getType(), passphrase);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
382
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
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383 data = exportPEM(pk, passphrase);
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
384 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
385 catch (Exception e) {
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
386 e.printStackTrace();
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
387 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
388 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
389
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
390 return data;
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
391 }
0ce5cc452d02 initial version
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
392 }