4f9533c772
Imported GNU Classpath 0.90
* scripts/makemake.tcl: LocaleData.java moved to gnu/java/locale.
* sources.am: Regenerated.
* gcj/javaprims.h: Regenerated.
* Makefile.in: Regenerated.
* gcj/Makefile.in: Regenerated.
* include/Makefile.in: Regenerated.
* testsuite/Makefile.in: Regenerated.
* gnu/java/lang/VMInstrumentationImpl.java: New override.
* gnu/java/net/local/LocalSocketImpl.java: Likewise.
* gnu/classpath/jdwp/VMMethod.java: Likewise.
* gnu/classpath/jdwp/VMVirtualMachine.java: Update to latest
interface.
* java/lang/Thread.java: Add UncaughtExceptionHandler.
* java/lang/reflect/Method.java: Implements GenericDeclaration and
isSynthetic(),
* java/lang/reflect/Field.java: Likewise.
* java/lang/reflect/Constructor.java
* java/lang/Class.java: Implements Type, GenericDeclaration,
getSimpleName() and getEnclosing*() methods.
* java/lang/Class.h: Add new public methods.
* java/lang/Math.java: Add signum(), ulp() and log10().
* java/lang/natMath.cc (log10): New function.
* java/security/VMSecureRandom.java: New override.
* java/util/logging/Logger.java: Updated to latest classpath
version.
* java/util/logging/LogManager.java: New override.
From-SVN: r113887
278 lines
9.5 KiB
Java
278 lines
9.5 KiB
Java
/* Sha256.java --
|
|
Copyright (C) 2003, 2006 Free Software Foundation, Inc.
|
|
|
|
This file is a part of GNU Classpath.
|
|
|
|
GNU Classpath is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or (at
|
|
your option) any later version.
|
|
|
|
GNU Classpath 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
|
|
General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GNU Classpath; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
|
|
USA
|
|
|
|
Linking this library statically or dynamically with other modules is
|
|
making a combined work based on this library. Thus, the terms and
|
|
conditions of the GNU General Public License cover the whole
|
|
combination.
|
|
|
|
As a special exception, the copyright holders of this library give you
|
|
permission to link this library with independent modules to produce an
|
|
executable, regardless of the license terms of these independent
|
|
modules, and to copy and distribute the resulting executable under
|
|
terms of your choice, provided that you also meet, for each linked
|
|
independent module, the terms and conditions of the license of that
|
|
module. An independent module is a module which is not derived from
|
|
or based on this library. If you modify this library, you may extend
|
|
this exception to your version of the library, but you are not
|
|
obligated to do so. If you do not wish to do so, delete this
|
|
exception statement from your version. */
|
|
|
|
|
|
package gnu.java.security.hash;
|
|
|
|
import gnu.java.security.Registry;
|
|
import gnu.java.security.util.Util;
|
|
|
|
/**
|
|
* <p>Implementation of SHA2-1 [SHA-256] per the IETF Draft Specification.</p>
|
|
*
|
|
* <p>References:</p>
|
|
* <ol>
|
|
* <li><a href="http://ftp.ipv4.heanet.ie/pub/ietf/internet-drafts/draft-ietf-ipsec-ciph-aes-cbc-03.txt">
|
|
* Descriptions of SHA-256, SHA-384, and SHA-512</a>,</li>
|
|
* <li>http://csrc.nist.gov/cryptval/shs/sha256-384-512.pdf</li>
|
|
* </ol>
|
|
*/
|
|
public class Sha256 extends BaseHash
|
|
{
|
|
|
|
// Constants and variables
|
|
// -------------------------------------------------------------------------
|
|
private static final int[] k = { 0x428a2f98, 0x71374491, 0xb5c0fbcf,
|
|
0xe9b5dba5, 0x3956c25b, 0x59f111f1,
|
|
0x923f82a4, 0xab1c5ed5, 0xd807aa98,
|
|
0x12835b01, 0x243185be, 0x550c7dc3,
|
|
0x72be5d74, 0x80deb1fe, 0x9bdc06a7,
|
|
0xc19bf174, 0xe49b69c1, 0xefbe4786,
|
|
0x0fc19dc6, 0x240ca1cc, 0x2de92c6f,
|
|
0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
|
|
0x983e5152, 0xa831c66d, 0xb00327c8,
|
|
0xbf597fc7, 0xc6e00bf3, 0xd5a79147,
|
|
0x06ca6351, 0x14292967, 0x27b70a85,
|
|
0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
|
|
0x650a7354, 0x766a0abb, 0x81c2c92e,
|
|
0x92722c85, 0xa2bfe8a1, 0xa81a664b,
|
|
0xc24b8b70, 0xc76c51a3, 0xd192e819,
|
|
0xd6990624, 0xf40e3585, 0x106aa070,
|
|
0x19a4c116, 0x1e376c08, 0x2748774c,
|
|
0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a,
|
|
0x5b9cca4f, 0x682e6ff3, 0x748f82ee,
|
|
0x78a5636f, 0x84c87814, 0x8cc70208,
|
|
0x90befffa, 0xa4506ceb, 0xbef9a3f7,
|
|
0xc67178f2 };
|
|
|
|
private static final int BLOCK_SIZE = 64; // inner block size in bytes
|
|
|
|
private static final String DIGEST0 = "BA7816BF8F01CFEA414140DE5DAE2223B00361A396177A9CB410FF61F20015AD";
|
|
|
|
private static final int[] w = new int[64];
|
|
|
|
/** caches the result of the correctness test, once executed. */
|
|
private static Boolean valid;
|
|
|
|
/** 256-bit interim result. */
|
|
private int h0, h1, h2, h3, h4, h5, h6, h7;
|
|
|
|
// Constructor(s)
|
|
// -------------------------------------------------------------------------
|
|
|
|
/** Trivial 0-arguments constructor. */
|
|
public Sha256()
|
|
{
|
|
super(Registry.SHA256_HASH, 32, BLOCK_SIZE);
|
|
}
|
|
|
|
/**
|
|
* <p>Private constructor for cloning purposes.</p>
|
|
*
|
|
* @param md the instance to clone.
|
|
*/
|
|
private Sha256(Sha256 md)
|
|
{
|
|
this();
|
|
|
|
this.h0 = md.h0;
|
|
this.h1 = md.h1;
|
|
this.h2 = md.h2;
|
|
this.h3 = md.h3;
|
|
this.h4 = md.h4;
|
|
this.h5 = md.h5;
|
|
this.h6 = md.h6;
|
|
this.h7 = md.h7;
|
|
this.count = md.count;
|
|
this.buffer = (byte[]) md.buffer.clone();
|
|
}
|
|
|
|
// Class methods
|
|
// -------------------------------------------------------------------------
|
|
|
|
public static final int[] G(int hh0, int hh1, int hh2, int hh3, int hh4,
|
|
int hh5, int hh6, int hh7, byte[] in, int offset)
|
|
{
|
|
return sha(hh0, hh1, hh2, hh3, hh4, hh5, hh6, hh7, in, offset);
|
|
}
|
|
|
|
// Instance methods
|
|
// -------------------------------------------------------------------------
|
|
|
|
// java.lang.Cloneable interface implementation ----------------------------
|
|
|
|
public Object clone()
|
|
{
|
|
return new Sha256(this);
|
|
}
|
|
|
|
// Implementation of concrete methods in BaseHash --------------------------
|
|
|
|
protected void transform(byte[] in, int offset)
|
|
{
|
|
int[] result = sha(h0, h1, h2, h3, h4, h5, h6, h7, in, offset);
|
|
|
|
h0 = result[0];
|
|
h1 = result[1];
|
|
h2 = result[2];
|
|
h3 = result[3];
|
|
h4 = result[4];
|
|
h5 = result[5];
|
|
h6 = result[6];
|
|
h7 = result[7];
|
|
}
|
|
|
|
protected byte[] padBuffer()
|
|
{
|
|
int n = (int) (count % BLOCK_SIZE);
|
|
int padding = (n < 56) ? (56 - n) : (120 - n);
|
|
byte[] result = new byte[padding + 8];
|
|
|
|
// padding is always binary 1 followed by binary 0s
|
|
result[0] = (byte) 0x80;
|
|
|
|
// save number of bits, casting the long to an array of 8 bytes
|
|
long bits = count << 3;
|
|
result[padding++] = (byte) (bits >>> 56);
|
|
result[padding++] = (byte) (bits >>> 48);
|
|
result[padding++] = (byte) (bits >>> 40);
|
|
result[padding++] = (byte) (bits >>> 32);
|
|
result[padding++] = (byte) (bits >>> 24);
|
|
result[padding++] = (byte) (bits >>> 16);
|
|
result[padding++] = (byte) (bits >>> 8);
|
|
result[padding] = (byte) bits;
|
|
|
|
return result;
|
|
}
|
|
|
|
protected byte[] getResult()
|
|
{
|
|
return new byte[] { (byte) (h0 >>> 24), (byte) (h0 >>> 16),
|
|
(byte) (h0 >>> 8), (byte) h0, (byte) (h1 >>> 24),
|
|
(byte) (h1 >>> 16), (byte) (h1 >>> 8), (byte) h1,
|
|
(byte) (h2 >>> 24), (byte) (h2 >>> 16),
|
|
(byte) (h2 >>> 8), (byte) h2, (byte) (h3 >>> 24),
|
|
(byte) (h3 >>> 16), (byte) (h3 >>> 8), (byte) h3,
|
|
(byte) (h4 >>> 24), (byte) (h4 >>> 16),
|
|
(byte) (h4 >>> 8), (byte) h4, (byte) (h5 >>> 24),
|
|
(byte) (h5 >>> 16), (byte) (h5 >>> 8), (byte) h5,
|
|
(byte) (h6 >>> 24), (byte) (h6 >>> 16),
|
|
(byte) (h6 >>> 8), (byte) h6, (byte) (h7 >>> 24),
|
|
(byte) (h7 >>> 16), (byte) (h7 >>> 8), (byte) h7 };
|
|
}
|
|
|
|
protected void resetContext()
|
|
{
|
|
// magic SHA-256 initialisation constants
|
|
h0 = 0x6a09e667;
|
|
h1 = 0xbb67ae85;
|
|
h2 = 0x3c6ef372;
|
|
h3 = 0xa54ff53a;
|
|
h4 = 0x510e527f;
|
|
h5 = 0x9b05688c;
|
|
h6 = 0x1f83d9ab;
|
|
h7 = 0x5be0cd19;
|
|
}
|
|
|
|
public boolean selfTest()
|
|
{
|
|
if (valid == null)
|
|
{
|
|
Sha256 md = new Sha256();
|
|
md.update((byte) 0x61); // a
|
|
md.update((byte) 0x62); // b
|
|
md.update((byte) 0x63); // c
|
|
String result = Util.toString(md.digest());
|
|
valid = Boolean.valueOf(DIGEST0.equals(result));
|
|
}
|
|
|
|
return valid.booleanValue();
|
|
}
|
|
|
|
// SHA specific methods ----------------------------------------------------
|
|
|
|
private static final synchronized int[] sha(int hh0, int hh1, int hh2,
|
|
int hh3, int hh4, int hh5,
|
|
int hh6, int hh7, byte[] in,
|
|
int offset)
|
|
{
|
|
int A = hh0;
|
|
int B = hh1;
|
|
int C = hh2;
|
|
int D = hh3;
|
|
int E = hh4;
|
|
int F = hh5;
|
|
int G = hh6;
|
|
int H = hh7;
|
|
int r, T, T2;
|
|
|
|
for (r = 0; r < 16; r++)
|
|
{
|
|
w[r] = (in[offset++] << 24 | (in[offset++] & 0xFF) << 16
|
|
| (in[offset++] & 0xFF) << 8 | (in[offset++] & 0xFF));
|
|
}
|
|
for (r = 16; r < 64; r++)
|
|
{
|
|
T = w[r - 2];
|
|
T2 = w[r - 15];
|
|
w[r] = ((((T >>> 17) | (T << 15)) ^ ((T >>> 19) | (T << 13)) ^ (T >>> 10))
|
|
+ w[r - 7]
|
|
+ (((T2 >>> 7) | (T2 << 25)) ^ ((T2 >>> 18) | (T2 << 14)) ^ (T2 >>> 3))
|
|
+ w[r - 16]);
|
|
}
|
|
|
|
for (r = 0; r < 64; r++)
|
|
{
|
|
T = (H
|
|
+ (((E >>> 6) | (E << 26)) ^ ((E >>> 11) | (E << 21)) ^ ((E >>> 25) | (E << 7)))
|
|
+ ((E & F) ^ (~E & G)) + k[r] + w[r]);
|
|
T2 = ((((A >>> 2) | (A << 30)) ^ ((A >>> 13) | (A << 19)) ^ ((A >>> 22) | (A << 10)))
|
|
+ ((A & B) ^ (A & C) ^ (B & C)));
|
|
H = G;
|
|
G = F;
|
|
F = E;
|
|
E = D + T;
|
|
D = C;
|
|
C = B;
|
|
B = A;
|
|
A = T + T2;
|
|
}
|
|
|
|
return new int[] { hh0 + A, hh1 + B, hh2 + C, hh3 + D, hh4 + E, hh5 + F,
|
|
hh6 + G, hh7 + H };
|
|
}
|
|
}
|