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// Copyright 2003-2010 Christian d'Heureuse, Inventec Informatik AG, Zurich, Switzerland | |
// www.source-code.biz, www.inventec.ch/chdh | |
// | |
// This module is multi-licensed and may be used under the terms | |
// of any of the following licenses: | |
// | |
// EPL, Eclipse Public License, V1.0 or later, http://www.eclipse.org/legal | |
// LGPL, GNU Lesser General Public License, V2.1 or later, http://www.gnu.org/licenses/lgpl.html | |
// GPL, GNU General Public License, V2 or later, http://www.gnu.org/licenses/gpl.html | |
// AL, Apache License, V2.0 or later, http://www.apache.org/licenses | |
// BSD, BSD License, http://www.opensource.org/licenses/bsd-license.php | |
// MIT, MIT License, http://www.opensource.org/licenses/MIT | |
// | |
// Please contact the author if you need another license. | |
// This module is provided "as is", without warranties of any kind. | |
/** | |
* A Base64 encoder/decoder. | |
* | |
* <p> | |
* This class is used to encode and decode data in Base64 format as described in RFC 1521. | |
* | |
* <p> | |
* Project home page: <a href="http://www.source-code.biz/base64coder/java/">www.source-code.biz/base64coder/java</a><br> | |
* Author: Christian d'Heureuse, Inventec Informatik AG, Zurich, Switzerland<br> | |
* Multi-licensed: EPL / LGPL / GPL / AL / BSD / MIT. | |
*/ | |
public class Base64Coder { | |
// The line separator string of the operating system. | |
private static final String systemLineSeparator = System.getProperty("line.separator"); | |
// Mapping table from 6-bit nibbles to Base64 characters. | |
private static final char[] map1 = new char[64]; | |
static { | |
int i=0; | |
for (char c='A'; c<='Z'; c++) map1[i++] = c; | |
for (char c='a'; c<='z'; c++) map1[i++] = c; | |
for (char c='0'; c<='9'; c++) map1[i++] = c; | |
map1[i++] = '+'; map1[i++] = '/'; } | |
// Mapping table from Base64 characters to 6-bit nibbles. | |
private static final byte[] map2 = new byte[128]; | |
static { | |
for (int i=0; i<map2.length; i++) map2[i] = -1; | |
for (int i=0; i<64; i++) map2[map1[i]] = (byte)i; } | |
/** | |
* Encodes a string into Base64 format. | |
* No blanks or line breaks are inserted. | |
* @param s A String to be encoded. | |
* @return A String containing the Base64 encoded data. | |
*/ | |
public static String encodeString (String s) { | |
return new String(encode(s.getBytes())); } | |
/** | |
* Encodes a byte array into Base 64 format and breaks the output into lines of 76 characters. | |
* This method is compatible with <code>sun.misc.BASE64Encoder.encodeBuffer(byte[])</code>. | |
* @param in An array containing the data bytes to be encoded. | |
* @return A String containing the Base64 encoded data, broken into lines. | |
*/ | |
public static String encodeLines (byte[] in) { | |
return encodeLines(in, 0, in.length, 76, systemLineSeparator); } | |
/** | |
* Encodes a byte array into Base 64 format and breaks the output into lines. | |
* @param in An array containing the data bytes to be encoded. | |
* @param iOff Offset of the first byte in <code>in</code> to be processed. | |
* @param iLen Number of bytes to be processed in <code>in</code>, starting at <code>iOff</code>. | |
* @param lineLen Line length for the output data. Should be a multiple of 4. | |
* @param lineSeparator The line separator to be used to separate the output lines. | |
* @return A String containing the Base64 encoded data, broken into lines. | |
*/ | |
public static String encodeLines (byte[] in, int iOff, int iLen, int lineLen, String lineSeparator) { | |
int blockLen = (lineLen*3) / 4; | |
if (blockLen <= 0) throw new IllegalArgumentException(); | |
int lines = (iLen+blockLen-1) / blockLen; | |
int bufLen = ((iLen+2)/3)*4 + lines*lineSeparator.length(); | |
StringBuilder buf = new StringBuilder(bufLen); | |
int ip = 0; | |
while (ip < iLen) { | |
int l = Math.min(iLen-ip, blockLen); | |
buf.append (encode(in, iOff+ip, l)); | |
buf.append (lineSeparator); | |
ip += l; } | |
return buf.toString(); } | |
/** | |
* Encodes a byte array into Base64 format. | |
* No blanks or line breaks are inserted in the output. | |
* @param in An array containing the data bytes to be encoded. | |
* @return A character array containing the Base64 encoded data. | |
*/ | |
public static char[] encode (byte[] in) { | |
return encode(in, 0, in.length); } | |
/** | |
* Encodes a byte array into Base64 format. | |
* No blanks or line breaks are inserted in the output. | |
* @param in An array containing the data bytes to be encoded. | |
* @param iLen Number of bytes to process in <code>in</code>. | |
* @return A character array containing the Base64 encoded data. | |
*/ | |
public static char[] encode (byte[] in, int iLen) { | |
return encode(in, 0, iLen); } | |
/** | |
* Encodes a byte array into Base64 format. | |
* No blanks or line breaks are inserted in the output. | |
* @param in An array containing the data bytes to be encoded. | |
* @param iOff Offset of the first byte in <code>in</code> to be processed. | |
* @param iLen Number of bytes to process in <code>in</code>, starting at <code>iOff</code>. | |
* @return A character array containing the Base64 encoded data. | |
*/ | |
public static char[] encode (byte[] in, int iOff, int iLen) { | |
int oDataLen = (iLen*4+2)/3; // output length without padding | |
int oLen = ((iLen+2)/3)*4; // output length including padding | |
char[] out = new char[oLen]; | |
int ip = iOff; | |
int iEnd = iOff + iLen; | |
int op = 0; | |
while (ip < iEnd) { | |
int i0 = in[ip++] & 0xff; | |
int i1 = ip < iEnd ? in[ip++] & 0xff : 0; | |
int i2 = ip < iEnd ? in[ip++] & 0xff : 0; | |
int o0 = i0 >>> 2; | |
int o1 = ((i0 & 3) << 4) | (i1 >>> 4); | |
int o2 = ((i1 & 0xf) << 2) | (i2 >>> 6); | |
int o3 = i2 & 0x3F; | |
out[op++] = map1[o0]; | |
out[op++] = map1[o1]; | |
out[op] = op < oDataLen ? map1[o2] : '='; op++; | |
out[op] = op < oDataLen ? map1[o3] : '='; op++; } | |
return out; } | |
/** | |
* Decodes a string from Base64 format. | |
* No blanks or line breaks are allowed within the Base64 encoded input data. | |
* @param s A Base64 String to be decoded. | |
* @return A String containing the decoded data. | |
* @throws IllegalArgumentException If the input is not valid Base64 encoded data. | |
*/ | |
public static String decodeString (String s) { | |
return new String(decode(s)); } | |
/** | |
* Decodes a byte array from Base64 format and ignores line separators, tabs and blanks. | |
* CR, LF, Tab and Space characters are ignored in the input data. | |
* This method is compatible with <code>sun.misc.BASE64Decoder.decodeBuffer(String)</code>. | |
* @param s A Base64 String to be decoded. | |
* @return An array containing the decoded data bytes. | |
* @throws IllegalArgumentException If the input is not valid Base64 encoded data. | |
*/ | |
public static byte[] decodeLines (String s) { | |
char[] buf = new char[s.length()]; | |
int p = 0; | |
for (int ip = 0; ip < s.length(); ip++) { | |
char c = s.charAt(ip); | |
if (c != ' ' && c != '\r' && c != '\n' && c != '\t') | |
buf[p++] = c; } | |
return decode(buf, 0, p); } | |
/** | |
* Decodes a byte array from Base64 format. | |
* No blanks or line breaks are allowed within the Base64 encoded input data. | |
* @param s A Base64 String to be decoded. | |
* @return An array containing the decoded data bytes. | |
* @throws IllegalArgumentException If the input is not valid Base64 encoded data. | |
*/ | |
public static byte[] decode (String s) { | |
return decode(s.toCharArray()); } | |
/** | |
* Decodes a byte array from Base64 format. | |
* No blanks or line breaks are allowed within the Base64 encoded input data. | |
* @param in A character array containing the Base64 encoded data. | |
* @return An array containing the decoded data bytes. | |
* @throws IllegalArgumentException If the input is not valid Base64 encoded data. | |
*/ | |
public static byte[] decode (char[] in) { | |
return decode(in, 0, in.length); } | |
/** | |
* Decodes a byte array from Base64 format. | |
* No blanks or line breaks are allowed within the Base64 encoded input data. | |
* @param in A character array containing the Base64 encoded data. | |
* @param iOff Offset of the first character in <code>in</code> to be processed. | |
* @param iLen Number of characters to process in <code>in</code>, starting at <code>iOff</code>. | |
* @return An array containing the decoded data bytes. | |
* @throws IllegalArgumentException If the input is not valid Base64 encoded data. | |
*/ | |
public static byte[] decode (char[] in, int iOff, int iLen) { | |
if (iLen%4 != 0) throw new IllegalArgumentException ("Length of Base64 encoded input string is not a multiple of 4."); | |
while (iLen > 0 && in[iOff+iLen-1] == '=') iLen--; | |
int oLen = (iLen*3) / 4; | |
byte[] out = new byte[oLen]; | |
int ip = iOff; | |
int iEnd = iOff + iLen; | |
int op = 0; | |
while (ip < iEnd) { | |
int i0 = in[ip++]; | |
int i1 = in[ip++]; | |
int i2 = ip < iEnd ? in[ip++] : 'A'; | |
int i3 = ip < iEnd ? in[ip++] : 'A'; | |
if (i0 > 127 || i1 > 127 || i2 > 127 || i3 > 127) | |
throw new IllegalArgumentException ("Illegal character in Base64 encoded data."); | |
int b0 = map2[i0]; | |
int b1 = map2[i1]; | |
int b2 = map2[i2]; | |
int b3 = map2[i3]; | |
if (b0 < 0 || b1 < 0 || b2 < 0 || b3 < 0) | |
throw new IllegalArgumentException ("Illegal character in Base64 encoded data."); | |
int o0 = ( b0 <<2) | (b1>>>4); | |
int o1 = ((b1 & 0xf)<<4) | (b2>>>2); | |
int o2 = ((b2 & 3)<<6) | b3; | |
out[op++] = (byte)o0; | |
if (op<oLen) out[op++] = (byte)o1; | |
if (op<oLen) out[op++] = (byte)o2; } | |
return out; } | |
// Dummy constructor. | |
private Base64Coder() {} | |
} // end class Base64Coder |
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// How to export the private key from keystore? | |
// Does keytool not have an option to do so? | |
// This example use the "testkeys" file that comes with JSSE 1.0.3 | |
// Alexey Zilber: Ported to work with Base64Coder: http://www.source-code.biz/snippets/java/2.htm | |
import java.security.cert.Certificate; | |
import java.security.*; | |
import java.io.File; | |
import java.io.FileInputStream; | |
class ExportPriv { | |
public static void main(String args[]) throws Exception { | |
if (args.length < 2) { | |
//Yes I know this sucks (the password is visible to other users via ps | |
// but this was a quick-n-dirty fix to export from a keystore to pkcs12 | |
// someday I may fix, but for now it'll have to do. | |
System.err.println("Usage: java ExportPriv <keystore> <alias> <password>"); | |
System.exit(1); | |
} | |
ExportPriv myep = new ExportPriv(); | |
myep.doit(args[0], args[1], args[2]); | |
} | |
public void doit(String fileName, String aliasName, String pass) throws Exception { | |
KeyStore ks = KeyStore.getInstance("JKS"); | |
char[] passPhrase = pass.toCharArray(); | |
//BASE64Encoder myB64 = new BASE64Encoder(); | |
File certificateFile = new File(fileName); | |
ks.load(new FileInputStream(certificateFile), passPhrase); | |
KeyPair kp = getPrivateKey(ks, aliasName, passPhrase); | |
PrivateKey privKey = kp.getPrivate(); | |
char[] b64 = Base64Coder.encode(privKey.getEncoded()); | |
System.out.println("-----BEGIN PRIVATE KEY-----"); | |
System.out.println(b64); | |
System.out.println("-----END PRIVATE KEY-----"); | |
} | |
// From http://javaalmanac.com/egs/java.security/GetKeyFromKs.html | |
public KeyPair getPrivateKey(KeyStore keystore, String alias, char[] password) { | |
try { | |
// Get private key | |
Key key = keystore.getKey(alias, password); | |
System.out.println(key); | |
if (key instanceof PrivateKey) { | |
// Get certificate of public key | |
Certificate cert = keystore.getCertificate(alias); | |
// Get public key | |
PublicKey publicKey = cert.getPublicKey(); | |
// Return a key pair | |
return new KeyPair(publicKey, (PrivateKey) key); | |
} | |
} catch (UnrecoverableKeyException e) { | |
e.printStackTrace(); | |
} catch (NoSuchAlgorithmException e) { | |
e.printStackTrace(); | |
} catch (KeyStoreException e) { | |
e.printStackTrace(); | |
} | |
return null; | |
} | |
} |
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Manifest-Version: 1.0 | |
Main-Class: ExportPriv |
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javac -classpath . ExportPriv.java | |
jar cfm exportpriv.jar MANIFEST.MF Base64Coder.class ExportPriv.class |
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