+ * @author Timothy W Macinta (twm@alum.mit.edu) (added main() method)
+ */
+
+public class MD5InputStream extends FilterInputStream {
+ /**
+ * MD5 context
+ */
+ private MD5 md5;
+
+ /**
+ * Creates a MD5InputStream
+ *
+ * @param in
+ * The input stream
+ */
+ public MD5InputStream(InputStream in) {
+ super(in);
+
+ md5 = new MD5();
+ }
+
+ /**
+ * Read a byte of data.
+ *
+ * @see java.io.FilterInputStream
+ */
+ public int read() throws IOException {
+ int c = in.read();
+
+ if (c == -1)
+ return -1;
+
+ if ((c & ~0xff) != 0) {
+ System.out
+ .println("MD5InputStream.read() got character with (c & ~0xff) != 0)!");
+ } else {
+ md5.Update(c);
+ }
+
+ return c;
+ }
+
+ /**
+ * Reads into an array of bytes.
+ *
+ * @see java.io.FilterInputStream
+ */
+ public int read(byte bytes[], int offset, int length) throws IOException {
+ int r;
+
+ if ((r = in.read(bytes, offset, length)) == -1)
+ return r;
+
+ md5.Update(bytes, offset, r);
+
+ return r;
+ }
+
+ /**
+ * Returns array of bytes representing hash of the stream as finalized for
+ * the current state.
+ *
+ * @see MD5#Final
+ */
+ public byte[] hash() {
+ return md5.Final();
+ }
+
+ public MD5 getMD5() {
+ return md5;
+ }
+
+ /**
+ * This method is here for testing purposes only - do not rely on it being
+ * here.
+ */
+ public static void main(String[] arg) {
+ try {
+
+ // //////////////////////////////////////////////////////////////
+ //
+ // usage: java com.twmacinta.util.MD5InputStream [--use-default-md5]
+ // [--no-native-lib] filename
+ //
+ // ///////
+
+ // determine the filename to use and the MD5 impelementation to use
+
+ String filename = arg[arg.length - 1];
+ boolean use_default_md5 = false;
+ boolean use_native_lib = true;
+ for (int i = 0; i < arg.length - 1; i++) {
+ if (arg[i].equals("--use-default-md5")) {
+ use_default_md5 = true;
+ } else if (arg[i].equals("--no-native-lib")) {
+ use_native_lib = false;
+ }
+ }
+
+ // initialize common variables
+
+ byte[] buf = new byte[65536];
+ int num_read;
+
+ // Use the default MD5 implementation that comes with Java
+
+ if (use_default_md5) {
+ InputStream in = new BufferedInputStream(new FileInputStream(
+ filename));
+ java.security.MessageDigest digest = java.security.MessageDigest
+ .getInstance("MD5");
+ while ((num_read = in.read(buf)) != -1) {
+ digest.update(buf, 0, num_read);
+ }
+ System.out
+ .println(MD5.asHex(digest.digest()) + " " + filename);
+ in.close();
+
+ // Use the optimized MD5 implementation
+
+ } else {
+
+ // disable the native library search, if requested
+
+ if (!use_native_lib) {
+ MD5.initNativeLibrary(true);
+ }
+
+ // calculate the checksum
+
+ MD5InputStream in = new MD5InputStream(new BufferedInputStream(
+ new FileInputStream(filename)));
+ while ((num_read = in.read(buf)) != -1)
+ ;
+ System.out.println(MD5.asHex(in.hash()) + " " + filename);
+ in.close();
+ }
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+ }
+
+}
Index: lutinutil/src/java/org/codelutin/util/MD5.java
diff -u /dev/null lutinutil/src/java/org/codelutin/util/MD5.java:1.1
--- /dev/null Tue Feb 5 15:39:58 2008
+++ lutinutil/src/java/org/codelutin/util/MD5.java Tue Feb 5 15:39:53 2008
@@ -0,0 +1,817 @@
+package org.codelutin.util;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * Fast implementation of RSA's MD5 hash generator in Java JDK Beta-2 or higher.
+ *
+ * Originally written by Santeri Paavolainen, Helsinki Finland 1996.
+ * (c) Santeri Paavolainen, Helsinki Finland 1996
+ * Many changes Copyright (c) 2002 - 2005 Timothy W Macinta
+ *
+ * This library is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU Library General Public License as published by the Free
+ * Software Foundation; either version 2.1 of the License, or (at your option)
+ * any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * See http://www.twmacinta.com/myjava/fast_md5.php for more information on this
+ * file and the related files.
+ *
+ * This was originally a rather straight re-implementation of the reference
+ * implementation given in RFC1321 by RSA. It passes the MD5 test suite as
+ * defined in RFC1321.
+ *
+ * Many optimizations made by Timothy W Macinta. Reduced time to checksum a test
+ * file in Java alone to roughly half the time taken compared with
+ * java.security.MessageDigest (within an intepretter). Also added an optional
+ * native method to reduce the time even further. See
+ * http://www.twmacinta.com/myjava/fast_md5.php for further information on the
+ * time improvements achieved.
+ *
+ * Some bug fixes also made by Timothy W Macinta.
+ *
+ * Please note: I (Timothy Macinta) have put this code in the com.twmacinta.util
+ * package only because it came without a package. I was not the the original
+ * author of the code, although I did optimize it (substantially) and fix some
+ * bugs.
+ *
+ * This Java class has been derived from the RSA Data Security, Inc. MD5
+ * Message-Digest Algorithm and its reference implementation.
+ *
+ * This class will attempt to use a native method to quickly compute checksums
+ * when the appropriate native library is available. On Linux, this library
+ * should be named "MD5.so" and on Windows it should be named "MD5.dll". The
+ * code will attempt to locate the library in the following locations in the
+ * order given:
+ *
+ *
+ * - The path specified by the system property
+ * "com.twmacinta.util.MD5.NATIVE_LIB_FILE" (be sure to include "MD5.so" or
+ * "MD5.dll" as appropriate at the end of the path).
+ *
- A platform specific directory beneath the "lib/arch/" directory. On
+ * Linux for x86, this is "lib/arch/linux_x86/". On Windows for x86, this is
+ * "lib/arch/win32_x86/".
+ *
- Within the "lib/" directory.
+ *
- Within the current directory.
+ *
+ *
+ *
+ * If the library is not found, the code will fall back to the default (slower)
+ * Java code.
+ *
+ * As a side effect of having the code search for the native library,
+ * SecurityExceptions might be thrown on JVMs that have a restrictive
+ * SecurityManager. The initialization code attempts to silently discard these
+ * exceptions and continue, but many SecurityManagers will attempt to notify the
+ * user directly of all SecurityExceptions thrown. Consequently, the code has
+ * provisions for skipping the search for the native library. Any of these
+ * provisions may be used to skip the search as long as they are performed
+ * before the first instance of a com.twmacinta.util.MD5 object is
+ * constructed (note that the convenience stream objects will implicitly create
+ * an MD5 object).
+ *
+ * The first option is to set the system property
+ * "com.twmacinta.util.MD5.NO_NATIVE_LIB" to "true" or "1". Unfortunately,
+ * SecurityManagers may also choose to disallow system property setting, so this
+ * won't be of use in all cases.
+ *
+ * The second option is to call com.twmacinta.util.MD5.initNativeLibrary(true)
+ * before any MD5 objects are constructed.
+ *
+ * @author Santeri Paavolainen
+ * @author Timothy W Macinta (twm@alum.mit.edu) (optimizations and bug fixes)
+ */
+
+public class MD5 {
+ /**
+ * MD5 state
+ */
+ MD5State state;
+
+ /**
+ * If Final() has been called, finals is set to the current finals state.
+ * Any Update() causes this to be set to null.
+ */
+ MD5State finals;
+
+ /**
+ * Padding for Final()
+ */
+ static byte padding[] = { (byte) 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0 };
+
+ private static boolean native_lib_loaded = false;
+ private static boolean native_lib_init_pending = false;
+
+ /**
+ * Initialize MD5 internal state (object can be reused just by calling
+ * Init() after every Final()
+ */
+ public synchronized void Init() {
+ state = new MD5State();
+ finals = null;
+ }
+
+ /**
+ * Class constructor
+ */
+ public MD5() {
+ if (native_lib_init_pending)
+ _initNativeLibrary();
+ this.Init();
+ }
+
+ /**
+ * Initialize class, and update hash with ob.toString()
+ *
+ * @param ob
+ * Object, ob.toString() is used to update hash after
+ * initialization
+ */
+ public MD5(Object ob) {
+ this();
+ Update(ob.toString());
+ }
+
+ private void Decode(byte buffer[], int shift, int[] out) {
+ /*len += shift;
+ for (int i = 0; shift < len; i++, shift += 4) {
+ out[i] = ((int) (buffer[shift] & 0xff)) |
+ (((int) (buffer[shift + 1] & 0xff)) << 8) |
+ (((int) (buffer[shift + 2] & 0xff)) << 16) |
+ (((int) buffer[shift + 3]) << 24);
+ }*/
+
+ // unrolled loop (original loop shown above)
+ out[0] = ((int) (buffer[shift] & 0xff))
+ | (((int) (buffer[shift + 1] & 0xff)) << 8)
+ | (((int) (buffer[shift + 2] & 0xff)) << 16)
+ | (((int) buffer[shift + 3]) << 24);
+ out[1] = ((int) (buffer[shift + 4] & 0xff))
+ | (((int) (buffer[shift + 5] & 0xff)) << 8)
+ | (((int) (buffer[shift + 6] & 0xff)) << 16)
+ | (((int) buffer[shift + 7]) << 24);
+ out[2] = ((int) (buffer[shift + 8] & 0xff))
+ | (((int) (buffer[shift + 9] & 0xff)) << 8)
+ | (((int) (buffer[shift + 10] & 0xff)) << 16)
+ | (((int) buffer[shift + 11]) << 24);
+ out[3] = ((int) (buffer[shift + 12] & 0xff))
+ | (((int) (buffer[shift + 13] & 0xff)) << 8)
+ | (((int) (buffer[shift + 14] & 0xff)) << 16)
+ | (((int) buffer[shift + 15]) << 24);
+ out[4] = ((int) (buffer[shift + 16] & 0xff))
+ | (((int) (buffer[shift + 17] & 0xff)) << 8)
+ | (((int) (buffer[shift + 18] & 0xff)) << 16)
+ | (((int) buffer[shift + 19]) << 24);
+ out[5] = ((int) (buffer[shift + 20] & 0xff))
+ | (((int) (buffer[shift + 21] & 0xff)) << 8)
+ | (((int) (buffer[shift + 22] & 0xff)) << 16)
+ | (((int) buffer[shift + 23]) << 24);
+ out[6] = ((int) (buffer[shift + 24] & 0xff))
+ | (((int) (buffer[shift + 25] & 0xff)) << 8)
+ | (((int) (buffer[shift + 26] & 0xff)) << 16)
+ | (((int) buffer[shift + 27]) << 24);
+ out[7] = ((int) (buffer[shift + 28] & 0xff))
+ | (((int) (buffer[shift + 29] & 0xff)) << 8)
+ | (((int) (buffer[shift + 30] & 0xff)) << 16)
+ | (((int) buffer[shift + 31]) << 24);
+ out[8] = ((int) (buffer[shift + 32] & 0xff))
+ | (((int) (buffer[shift + 33] & 0xff)) << 8)
+ | (((int) (buffer[shift + 34] & 0xff)) << 16)
+ | (((int) buffer[shift + 35]) << 24);
+ out[9] = ((int) (buffer[shift + 36] & 0xff))
+ | (((int) (buffer[shift + 37] & 0xff)) << 8)
+ | (((int) (buffer[shift + 38] & 0xff)) << 16)
+ | (((int) buffer[shift + 39]) << 24);
+ out[10] = ((int) (buffer[shift + 40] & 0xff))
+ | (((int) (buffer[shift + 41] & 0xff)) << 8)
+ | (((int) (buffer[shift + 42] & 0xff)) << 16)
+ | (((int) buffer[shift + 43]) << 24);
+ out[11] = ((int) (buffer[shift + 44] & 0xff))
+ | (((int) (buffer[shift + 45] & 0xff)) << 8)
+ | (((int) (buffer[shift + 46] & 0xff)) << 16)
+ | (((int) buffer[shift + 47]) << 24);
+ out[12] = ((int) (buffer[shift + 48] & 0xff))
+ | (((int) (buffer[shift + 49] & 0xff)) << 8)
+ | (((int) (buffer[shift + 50] & 0xff)) << 16)
+ | (((int) buffer[shift + 51]) << 24);
+ out[13] = ((int) (buffer[shift + 52] & 0xff))
+ | (((int) (buffer[shift + 53] & 0xff)) << 8)
+ | (((int) (buffer[shift + 54] & 0xff)) << 16)
+ | (((int) buffer[shift + 55]) << 24);
+ out[14] = ((int) (buffer[shift + 56] & 0xff))
+ | (((int) (buffer[shift + 57] & 0xff)) << 8)
+ | (((int) (buffer[shift + 58] & 0xff)) << 16)
+ | (((int) buffer[shift + 59]) << 24);
+ out[15] = ((int) (buffer[shift + 60] & 0xff))
+ | (((int) (buffer[shift + 61] & 0xff)) << 8)
+ | (((int) (buffer[shift + 62] & 0xff)) << 16)
+ | (((int) buffer[shift + 63]) << 24);
+ }
+
+ private native void Transform_native(int[] state, byte buffer[], int shift,
+ int length);
+
+ private void Transform(MD5State state, byte buffer[], int shift,
+ int[] decode_buf) {
+ int a = state.state[0], b = state.state[1], c = state.state[2], d = state.state[3], x[] = decode_buf;
+
+ Decode(buffer, shift, decode_buf);
+
+ /* Round 1 */
+ a += ((b & c) | (~b & d)) + x[0] + 0xd76aa478; /* 1 */
+ a = ((a << 7) | (a >>> 25)) + b;
+ d += ((a & b) | (~a & c)) + x[1] + 0xe8c7b756; /* 2 */
+ d = ((d << 12) | (d >>> 20)) + a;
+ c += ((d & a) | (~d & b)) + x[2] + 0x242070db; /* 3 */
+ c = ((c << 17) | (c >>> 15)) + d;
+ b += ((c & d) | (~c & a)) + x[3] + 0xc1bdceee; /* 4 */
+ b = ((b << 22) | (b >>> 10)) + c;
+
+ a += ((b & c) | (~b & d)) + x[4] + 0xf57c0faf; /* 5 */
+ a = ((a << 7) | (a >>> 25)) + b;
+ d += ((a & b) | (~a & c)) + x[5] + 0x4787c62a; /* 6 */
+ d = ((d << 12) | (d >>> 20)) + a;
+ c += ((d & a) | (~d & b)) + x[6] + 0xa8304613; /* 7 */
+ c = ((c << 17) | (c >>> 15)) + d;
+ b += ((c & d) | (~c & a)) + x[7] + 0xfd469501; /* 8 */
+ b = ((b << 22) | (b >>> 10)) + c;
+
+ a += ((b & c) | (~b & d)) + x[8] + 0x698098d8; /* 9 */
+ a = ((a << 7) | (a >>> 25)) + b;
+ d += ((a & b) | (~a & c)) + x[9] + 0x8b44f7af; /* 10 */
+ d = ((d << 12) | (d >>> 20)) + a;
+ c += ((d & a) | (~d & b)) + x[10] + 0xffff5bb1; /* 11 */
+ c = ((c << 17) | (c >>> 15)) + d;
+ b += ((c & d) | (~c & a)) + x[11] + 0x895cd7be; /* 12 */
+ b = ((b << 22) | (b >>> 10)) + c;
+
+ a += ((b & c) | (~b & d)) + x[12] + 0x6b901122; /* 13 */
+ a = ((a << 7) | (a >>> 25)) + b;
+ d += ((a & b) | (~a & c)) + x[13] + 0xfd987193; /* 14 */
+ d = ((d << 12) | (d >>> 20)) + a;
+ c += ((d & a) | (~d & b)) + x[14] + 0xa679438e; /* 15 */
+ c = ((c << 17) | (c >>> 15)) + d;
+ b += ((c & d) | (~c & a)) + x[15] + 0x49b40821; /* 16 */
+ b = ((b << 22) | (b >>> 10)) + c;
+
+ /* Round 2 */
+ a += ((b & d) | (c & ~d)) + x[1] + 0xf61e2562; /* 17 */
+ a = ((a << 5) | (a >>> 27)) + b;
+ d += ((a & c) | (b & ~c)) + x[6] + 0xc040b340; /* 18 */
+ d = ((d << 9) | (d >>> 23)) + a;
+ c += ((d & b) | (a & ~b)) + x[11] + 0x265e5a51; /* 19 */
+ c = ((c << 14) | (c >>> 18)) + d;
+ b += ((c & a) | (d & ~a)) + x[0] + 0xe9b6c7aa; /* 20 */
+ b = ((b << 20) | (b >>> 12)) + c;
+
+ a += ((b & d) | (c & ~d)) + x[5] + 0xd62f105d; /* 21 */
+ a = ((a << 5) | (a >>> 27)) + b;
+ d += ((a & c) | (b & ~c)) + x[10] + 0x02441453; /* 22 */
+ d = ((d << 9) | (d >>> 23)) + a;
+ c += ((d & b) | (a & ~b)) + x[15] + 0xd8a1e681; /* 23 */
+ c = ((c << 14) | (c >>> 18)) + d;
+ b += ((c & a) | (d & ~a)) + x[4] + 0xe7d3fbc8; /* 24 */
+ b = ((b << 20) | (b >>> 12)) + c;
+
+ a += ((b & d) | (c & ~d)) + x[9] + 0x21e1cde6; /* 25 */
+ a = ((a << 5) | (a >>> 27)) + b;
+ d += ((a & c) | (b & ~c)) + x[14] + 0xc33707d6; /* 26 */
+ d = ((d << 9) | (d >>> 23)) + a;
+ c += ((d & b) | (a & ~b)) + x[3] + 0xf4d50d87; /* 27 */
+ c = ((c << 14) | (c >>> 18)) + d;
+ b += ((c & a) | (d & ~a)) + x[8] + 0x455a14ed; /* 28 */
+ b = ((b << 20) | (b >>> 12)) + c;
+
+ a += ((b & d) | (c & ~d)) + x[13] + 0xa9e3e905; /* 29 */
+ a = ((a << 5) | (a >>> 27)) + b;
+ d += ((a & c) | (b & ~c)) + x[2] + 0xfcefa3f8; /* 30 */
+ d = ((d << 9) | (d >>> 23)) + a;
+ c += ((d & b) | (a & ~b)) + x[7] + 0x676f02d9; /* 31 */
+ c = ((c << 14) | (c >>> 18)) + d;
+ b += ((c & a) | (d & ~a)) + x[12] + 0x8d2a4c8a; /* 32 */
+ b = ((b << 20) | (b >>> 12)) + c;
+
+ /* Round 3 */
+ a += (b ^ c ^ d) + x[5] + 0xfffa3942; /* 33 */
+ a = ((a << 4) | (a >>> 28)) + b;
+ d += (a ^ b ^ c) + x[8] + 0x8771f681; /* 34 */
+ d = ((d << 11) | (d >>> 21)) + a;
+ c += (d ^ a ^ b) + x[11] + 0x6d9d6122; /* 35 */
+ c = ((c << 16) | (c >>> 16)) + d;
+ b += (c ^ d ^ a) + x[14] + 0xfde5380c; /* 36 */
+ b = ((b << 23) | (b >>> 9)) + c;
+
+ a += (b ^ c ^ d) + x[1] + 0xa4beea44; /* 37 */
+ a = ((a << 4) | (a >>> 28)) + b;
+ d += (a ^ b ^ c) + x[4] + 0x4bdecfa9; /* 38 */
+ d = ((d << 11) | (d >>> 21)) + a;
+ c += (d ^ a ^ b) + x[7] + 0xf6bb4b60; /* 39 */
+ c = ((c << 16) | (c >>> 16)) + d;
+ b += (c ^ d ^ a) + x[10] + 0xbebfbc70; /* 40 */
+ b = ((b << 23) | (b >>> 9)) + c;
+
+ a += (b ^ c ^ d) + x[13] + 0x289b7ec6; /* 41 */
+ a = ((a << 4) | (a >>> 28)) + b;
+ d += (a ^ b ^ c) + x[0] + 0xeaa127fa; /* 42 */
+ d = ((d << 11) | (d >>> 21)) + a;
+ c += (d ^ a ^ b) + x[3] + 0xd4ef3085; /* 43 */
+ c = ((c << 16) | (c >>> 16)) + d;
+ b += (c ^ d ^ a) + x[6] + 0x04881d05; /* 44 */
+ b = ((b << 23) | (b >>> 9)) + c;
+
+ a += (b ^ c ^ d) + x[9] + 0xd9d4d039; /* 33 */
+ a = ((a << 4) | (a >>> 28)) + b;
+ d += (a ^ b ^ c) + x[12] + 0xe6db99e5; /* 34 */
+ d = ((d << 11) | (d >>> 21)) + a;
+ c += (d ^ a ^ b) + x[15] + 0x1fa27cf8; /* 35 */
+ c = ((c << 16) | (c >>> 16)) + d;
+ b += (c ^ d ^ a) + x[2] + 0xc4ac5665; /* 36 */
+ b = ((b << 23) | (b >>> 9)) + c;
+
+ /* Round 4 */
+ a += (c ^ (b | ~d)) + x[0] + 0xf4292244; /* 49 */
+ a = ((a << 6) | (a >>> 26)) + b;
+ d += (b ^ (a | ~c)) + x[7] + 0x432aff97; /* 50 */
+ d = ((d << 10) | (d >>> 22)) + a;
+ c += (a ^ (d | ~b)) + x[14] + 0xab9423a7; /* 51 */
+ c = ((c << 15) | (c >>> 17)) + d;
+ b += (d ^ (c | ~a)) + x[5] + 0xfc93a039; /* 52 */
+ b = ((b << 21) | (b >>> 11)) + c;
+
+ a += (c ^ (b | ~d)) + x[12] + 0x655b59c3; /* 53 */
+ a = ((a << 6) | (a >>> 26)) + b;
+ d += (b ^ (a | ~c)) + x[3] + 0x8f0ccc92; /* 54 */
+ d = ((d << 10) | (d >>> 22)) + a;
+ c += (a ^ (d | ~b)) + x[10] + 0xffeff47d; /* 55 */
+ c = ((c << 15) | (c >>> 17)) + d;
+ b += (d ^ (c | ~a)) + x[1] + 0x85845dd1; /* 56 */
+ b = ((b << 21) | (b >>> 11)) + c;
+
+ a += (c ^ (b | ~d)) + x[8] + 0x6fa87e4f; /* 57 */
+ a = ((a << 6) | (a >>> 26)) + b;
+ d += (b ^ (a | ~c)) + x[15] + 0xfe2ce6e0; /* 58 */
+ d = ((d << 10) | (d >>> 22)) + a;
+ c += (a ^ (d | ~b)) + x[6] + 0xa3014314; /* 59 */
+ c = ((c << 15) | (c >>> 17)) + d;
+ b += (d ^ (c | ~a)) + x[13] + 0x4e0811a1; /* 60 */
+ b = ((b << 21) | (b >>> 11)) + c;
+
+ a += (c ^ (b | ~d)) + x[4] + 0xf7537e82; /* 61 */
+ a = ((a << 6) | (a >>> 26)) + b;
+ d += (b ^ (a | ~c)) + x[11] + 0xbd3af235; /* 62 */
+ d = ((d << 10) | (d >>> 22)) + a;
+ c += (a ^ (d | ~b)) + x[2] + 0x2ad7d2bb; /* 63 */
+ c = ((c << 15) | (c >>> 17)) + d;
+ b += (d ^ (c | ~a)) + x[9] + 0xeb86d391; /* 64 */
+ b = ((b << 21) | (b >>> 11)) + c;
+
+ state.state[0] += a;
+ state.state[1] += b;
+ state.state[2] += c;
+ state.state[3] += d;
+ }
+
+ /**
+ * Updates hash with the bytebuffer given (using at maximum length bytes
+ * from that buffer)
+ *
+ * @param stat
+ * Which state is updated
+ * @param buffer
+ * Array of bytes to be hashed
+ * @param offset
+ * Offset to buffer array
+ * @param length
+ * Use at maximum `length' bytes (absolute maximum is
+ * buffer.length)
+ */
+ public void Update(MD5State stat, byte buffer[], int offset, int length) {
+ int index, partlen, i, start;
+ finals = null;
+
+ /* Length can be told to be shorter, but not inter */
+ if ((length - offset) > buffer.length)
+ length = buffer.length - offset;
+
+ /* compute number of bytes mod 64 */
+
+ index = (int) (stat.count & 0x3f);
+ stat.count += length;
+
+ partlen = 64 - index;
+
+ if (length >= partlen) {
+ if (native_lib_loaded) {
+
+ // update state (using native method) to reflect input
+
+ if (partlen == 64) {
+ partlen = 0;
+ } else {
+ for (i = 0; i < partlen; i++)
+ stat.buffer[i + index] = buffer[i + offset];
+ Transform_native(stat.state, stat.buffer, 0, 64);
+ }
+ Transform_native(stat.state, buffer, partlen + offset, length
+ - partlen);
+ i = partlen + ((length - partlen) / 64) * 64;
+ } else {
+
+ // update state (using only Java) to reflect input
+
+ int[] decode_buf = new int[16];
+ if (partlen == 64) {
+ partlen = 0;
+ } else {
+ for (i = 0; i < partlen; i++)
+ stat.buffer[i + index] = buffer[i + offset];
+ Transform(stat, stat.buffer, 0, decode_buf);
+ }
+ for (i = partlen; (i + 63) < length; i += 64) {
+ Transform(stat, buffer, i + offset, decode_buf);
+ }
+ }
+ index = 0;
+ } else
+ i = 0;
+
+ /* buffer remaining input */
+ if (i < length) {
+ start = i;
+ for (; i < length; i++) {
+ stat.buffer[index + i - start] = buffer[i + offset];
+ }
+ }
+ }
+
+ /*
+ * Update()s for other datatypes than byte[] also. Update(byte[], int)
+ * is only the main driver.
+ */
+
+ /**
+ * Plain update, updates this object
+ */
+
+ public void Update(byte buffer[], int offset, int length) {
+ Update(this.state, buffer, offset, length);
+ }
+
+ public void Update(byte buffer[], int length) {
+ Update(this.state, buffer, 0, length);
+ }
+
+ /**
+ * Updates hash with given array of bytes
+ *
+ * @param buffer
+ * Array of bytes to use for updating the hash
+ */
+ public void Update(byte buffer[]) {
+ Update(buffer, 0, buffer.length);
+ }
+
+ /**
+ * Updates hash with a single byte
+ *
+ * @param b
+ * Single byte to update the hash
+ */
+ public void Update(byte b) {
+ byte buffer[] = new byte[1];
+ buffer[0] = b;
+
+ Update(buffer, 1);
+ }
+
+ /**
+ * Update buffer with given string. Note that because the version of the
+ * s.getBytes() method without parameters is used to convert the string to a
+ * byte array, the results of this method may be different on different
+ * platforms. The s.getBytes() method converts the string into a byte array
+ * using the current platform's default character set and may therefore have
+ * different results on platforms with different default character sets. If
+ * a version that works consistently across platforms with different default
+ * character sets is desired, use the overloaded version of the Update()
+ * method which takes a string and a character encoding.
+ *
+ * @param s
+ * String to be update to hash (is used as s.getBytes())
+ */
+ public void Update(String s) {
+ byte chars[] = s.getBytes();
+ Update(chars, chars.length);
+ }
+
+ /**
+ * Update buffer with given string using the given encoding. If the given
+ * encoding is null, the encoding "ISO8859_1" is used.
+ *
+ * @param s
+ * String to be update to hash (is used as
+ * s.getBytes(charset_name))
+ * @param charset_name
+ * The character set to use to convert s to a byte array, or null
+ * if the "ISO8859_1" character set is desired.
+ * @exception java.io.UnsupportedEncodingException
+ * If the named charset is not supported.
+ */
+ public void Update(String s, String charset_name)
+ throws java.io.UnsupportedEncodingException {
+ if (charset_name == null)
+ charset_name = "ISO8859_1";
+ byte chars[] = s.getBytes(charset_name);
+ Update(chars, chars.length);
+ }
+
+ /**
+ * Update buffer with a single integer (only & 0xff part is used, as a byte)
+ *
+ * @param i
+ * Integer value, which is then converted to byte as i & 0xff
+ */
+
+ public void Update(int i) {
+ Update((byte) (i & 0xff));
+ }
+
+ private byte[] Encode(int input[], int len) {
+ int i, j;
+ byte out[];
+
+ out = new byte[len];
+
+ for (i = j = 0; j < len; i++, j += 4) {
+ out[j] = (byte) (input[i] & 0xff);
+ out[j + 1] = (byte) ((input[i] >>> 8) & 0xff);
+ out[j + 2] = (byte) ((input[i] >>> 16) & 0xff);
+ out[j + 3] = (byte) ((input[i] >>> 24) & 0xff);
+ }
+
+ return out;
+ }
+
+ /**
+ * Returns array of bytes (16 bytes) representing hash as of the current
+ * state of this object. Note: getting a hash does not invalidate the hash
+ * object, it only creates a copy of the real state which is finalized.
+ *
+ * @return Array of 16 bytes, the hash of all updated bytes
+ */
+ public synchronized byte[] Final() {
+ byte bits[];
+ int index, padlen;
+ MD5State fin;
+
+ if (finals == null) {
+ fin = new MD5State(state);
+
+ int[] count_ints = { (int) (fin.count << 3),
+ (int) (fin.count >> 29) };
+ bits = Encode(count_ints, 8);
+
+ index = (int) (fin.count & 0x3f);
+ padlen = (index < 56) ? (56 - index) : (120 - index);
+
+ Update(fin, padding, 0, padlen);
+ Update(fin, bits, 0, 8);
+
+ /* Update() sets finals to null */
+ finals = fin;
+ }
+
+ return Encode(finals.state, 16);
+ }
+
+ private static final char[] HEX_CHARS = { '0', '1', '2', '3', '4', '5',
+ '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', };
+
+ /**
+ * Turns array of bytes into string representing each byte as unsigned hex
+ * number.
+ *
+ * @param hash
+ * Array of bytes to convert to hex-string
+ * @return Generated hex string
+ */
+ public static String asHex(byte hash[]) {
+ char buf[] = new char[hash.length * 2];
+ for (int i = 0, x = 0; i < hash.length; i++) {
+ buf[x++] = HEX_CHARS[(hash[i] >>> 4) & 0xf];
+ buf[x++] = HEX_CHARS[hash[i] & 0xf];
+ }
+ return new String(buf);
+ }
+
+ /**
+ * Returns 32-character hex representation of this objects hash
+ *
+ * @return String of this object's hash
+ */
+ public String asHex() {
+ return asHex(this.Final());
+ }
+
+ public static synchronized final void initNativeLibrary(
+ boolean disallow_lib_loading) {
+ if (disallow_lib_loading) {
+ native_lib_init_pending = false;
+ } else {
+ _initNativeLibrary();
+ }
+ }
+
+ private static synchronized final void _initNativeLibrary() {
+ if (!native_lib_init_pending)
+ return;
+ native_lib_loaded = _loadNativeLibrary();
+ native_lib_init_pending = false;
+ }
+
+ private static synchronized final boolean _loadNativeLibrary() {
+ try {
+
+ // don't try to load if the right property is set
+
+ String prop = System
+ .getProperty("com.twmacinta.util.MD5.NO_NATIVE_LIB");
+ if (prop != null) {
+ prop = prop.trim();
+ if (prop.equalsIgnoreCase("true") || prop.equals("1"))
+ return false;
+ }
+
+ // the library to load can be specified as a property
+
+ File f;
+ prop = System.getProperty("com.twmacinta.util.MD5.NATIVE_LIB_FILE");
+ if (prop != null) {
+ f = new File(prop);
+ if (f.canRead()) {
+ System.load(f.getAbsolutePath());
+ return true;
+ }
+ }
+
+ // determine the operating system and architecture
+
+ String os_name = System.getProperty("os.name");
+ String os_arch = System.getProperty("os.arch");
+ if (os_name == null || os_arch == null)
+ return false;
+ os_name = os_name.toLowerCase();
+ os_arch = os_arch.toLowerCase();
+
+ // define settings which are OS arch architecture independent
+
+ File arch_lib_path = null;
+ String arch_libfile_suffix = null;
+
+ // fill in settings for Linux on x86
+
+ if (os_name.equals("linux")
+ && (os_arch.equals("x86") || os_arch.equals("i386")
+ || os_arch.equals("i486") || os_arch.equals("i586") || os_arch
+ .equals("i686"))) {
+ arch_lib_path = new File(new File(new File("lib"), "arch"),
+ "linux_x86");
+ arch_libfile_suffix = ".so";
+
+ // fill in settings for Windows on x86
+
+ } else if (os_name.startsWith("windows ")
+ && (os_arch.equals("x86") || os_arch.equals("i386")
+ || os_arch.equals("i486") || os_arch.equals("i586") || os_arch
+ .equals("i686"))) {
+ arch_lib_path = new File(new File(new File("lib"), "arch"),
+ "win32_x86");
+ arch_libfile_suffix = ".dll";
+
+ // fill in settings Mac OS X on PPC
+
+ } else if (os_name.startsWith("mac os x")
+ && (os_arch.equals("ppc"))) {
+ arch_lib_path = new File(new File(new File("lib"), "arch"),
+ "darwin_ppc");
+ arch_libfile_suffix = ".jnilib";
+
+ // default to .so files with no architecture specific
+ // subdirectory
+
+ } else {
+ arch_libfile_suffix = ".so";
+ }
+
+ // build the required filename
+
+ String fname = "MD5" + arch_libfile_suffix;
+
+ // try the architecture specific directory
+
+ if (arch_lib_path != null) {
+ f = new File(arch_lib_path, fname);
+ if (f.canRead()) {
+ System.load(f.getAbsolutePath());
+ return true;
+ }
+ }
+
+ // try the "lib" subdirectory
+
+ f = new File(new File("lib"), fname);
+ if (f.canRead()) {
+ System.load(f.getAbsolutePath());
+ return true;
+ }
+
+ // try the working directory
+
+ f = new File(fname);
+ if (f.canRead()) {
+ System.load(f.getAbsolutePath());
+ return true;
+ }
+
+ // discard SecurityExceptions
+
+ } catch (SecurityException e) {
+ }
+
+ // unable to load
+
+ return false;
+ }
+
+ /**
+ * Calculates and returns the hash of the contents of the given file.
+ */
+ public static byte[] getHash(File f) throws IOException {
+ if (!f.exists())
+ throw new FileNotFoundException(f.toString());
+ InputStream close_me = null;
+ try {
+ long buf_size = f.length();
+ if (buf_size < 512)
+ buf_size = 512;
+ if (buf_size > 65536)
+ buf_size = 65536;
+ byte[] buf = new byte[(int) buf_size];
+ MD5InputStream in = new MD5InputStream(new FileInputStream(f));
+ close_me = in;
+ while (in.read(buf) != -1)
+ ;
+ in.close();
+ return in.hash();
+ } catch (IOException e) {
+ if (close_me != null)
+ try {
+ close_me.close();
+ } catch (Exception e2) {
+ }
+ throw e;
+ }
+ }
+
+ /**
+ * @return true iff the first 16 bytes of both hash1 and hash2 are equal;
+ * both hash1 and hash2 are null; or either hash array is less than
+ * 16 bytes in length and their lengths and all of their bytes are
+ * equal.
+ */
+ public static boolean hashesEqual(byte[] hash1, byte[] hash2) {
+ if (hash1 == null)
+ return hash2 == null;
+ if (hash2 == null)
+ return false;
+ int targ = 16;
+ if (hash1.length < 16) {
+ if (hash2.length != hash1.length)
+ return false;
+ targ = hash1.length;
+ } else if (hash2.length < 16) {
+ return false;
+ }
+ for (int i = 0; i < targ; i++) {
+ if (hash1[i] != hash2[i])
+ return false;
+ }
+ return true;
+ }
+
+}
Index: lutinutil/src/java/org/codelutin/util/MD5State.java
diff -u /dev/null lutinutil/src/java/org/codelutin/util/MD5State.java:1.1
--- /dev/null Tue Feb 5 15:39:58 2008
+++ lutinutil/src/java/org/codelutin/util/MD5State.java Tue Feb 5 15:39:53 2008
@@ -0,0 +1,79 @@
+package org.codelutin.util;
+
+/**
+ * Fast implementation of RSA's MD5 hash generator in Java JDK Beta-2 or higher
+ * Originally written by Santeri Paavolainen, Helsinki Finland 1996
+ * (c) Santeri Paavolainen, Helsinki Finland 1996
+ * Some changes Copyright (c) 2002 Timothy W Macinta
+ *
+ * This library is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU Library General Public License as published by the Free
+ * Software Foundation; either version 2.1 of the License, or (at your option)
+ * any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * See http://www.twmacinta.com/myjava/fast_md5.php for more information on this
+ * file.
+ *
+ * Contains internal state of the MD5 class
+ *
+ * Please note: I (Timothy Macinta) have put this code in the com.twmacinta.util
+ * package only because it came without a package. I was not the the original
+ * author of the code, although I did optimize it (substantially) and fix some
+ * bugs.
+ *
+ * @author Santeri Paavolainen
+ * @author Timothy W Macinta (twm@alum.mit.edu) (optimizations and bug fixes)
+ */
+
+class MD5State {
+ /**
+ * 128-bit state
+ */
+ int state[];
+
+ /**
+ * 64-bit character count
+ */
+ long count;
+
+ /**
+ * 64-byte buffer (512 bits) for storing to-be-hashed characters
+ */
+ byte buffer[];
+
+ public MD5State() {
+ buffer = new byte[64];
+ count = 0;
+ state = new int[4];
+
+ state[0] = 0x67452301;
+ state[1] = 0xefcdab89;
+ state[2] = 0x98badcfe;
+ state[3] = 0x10325476;
+
+ }
+
+ /** Create this State as a copy of another state */
+ public MD5State(MD5State from) {
+ this();
+
+ int i;
+
+ for (i = 0; i < buffer.length; i++)
+ this.buffer[i] = from.buffer[i];
+
+ for (i = 0; i < state.length; i++)
+ this.state[i] = from.state[i];
+
+ this.count = from.count;
+ }
+};