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/** * 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. */ public class Base64Coder { // The line separator string of the operating system. // Mapping table from 6-bit nibbles to Base64 characters. private static 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 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. */ /** * 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. */ 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. */ int blockLen = (lineLen*3) / 4; 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) { 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. */ /** * 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. */ 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. */ 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) 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) 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 // 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 { if (args.length != 4) { // 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> <store-password> <key-password>"); } ExportPriv myep = new ExportPriv(); myep.doit(args[0], args[1], args[2], args[3]); } char[] storePwdPhrase = storepassword.toCharArray(); char[] keyPasswordPhrase = keyPassword.toCharArray(); // BASE64Encoder myB64 = new BASE64Encoder(); char[] b64 = Base64Coder.encode(privKey.getEncoded()); } // From http://javaalmanac.com/egs/java.security/GetKeyFromKs.html char[] password) { try { // Get private key // Get certificate of public key // Get public key // Return a key pair } } return null; } } ExportPriv <keystore> <alias> <store-password> <key-password>
URL: http://conshell.net/wiki/index.php/Keytool_to_OpenSSL_Conversion_tips