[freenet-cvs] r19679 - trunk/freenet/src/freenet/crypt/ciphers
j16sdiz at freenetproject.org
j16sdiz at freenetproject.org
Fri May 2 12:11:58 UTC 2008
Author: j16sdiz
Date: 2008-05-02 12:11:58 +0000 (Fri, 02 May 2008)
New Revision: 19679
Modified:
trunk/freenet/src/freenet/crypt/ciphers/Rijndael.java
trunk/freenet/src/freenet/crypt/ciphers/Rijndael_Algorithm.java
Log:
restrict access
Modified: trunk/freenet/src/freenet/crypt/ciphers/Rijndael.java
===================================================================
--- trunk/freenet/src/freenet/crypt/ciphers/Rijndael.java 2008-05-02 11:21:43 UTC (rev 19678)
+++ trunk/freenet/src/freenet/crypt/ciphers/Rijndael.java 2008-05-02 12:11:58 UTC (rev 19679)
@@ -22,11 +22,11 @@
private final int keysize, blocksize;
// for Util.getCipherByName.. and yes, screw you too, java
- public Rijndael(Integer keysize) throws UnsupportedCipherException {
+ private Rijndael(Integer keysize) throws UnsupportedCipherException {
this(keysize.intValue());
}
- public Rijndael(int keysize) throws UnsupportedCipherException {
+ private Rijndael(int keysize) throws UnsupportedCipherException {
this(keysize, 128);
}
@@ -49,7 +49,7 @@
this.blocksize=blocksize;
}
- public Rijndael() {
+ private Rijndael() {
this.keysize = 128;
this.blocksize = 128;
}
@@ -83,10 +83,12 @@
* @return Size of temporary int[] a, t. If these are passed in, this can speed
* things up by avoiding unnecessary allocations between rounds.
*/
+ // only consumer is RijndaelPCFBMode
public synchronized final int getTempArraySize() {
return blocksize/(8*4);
}
+ // only consumer is RijndaelPCFBMode
public synchronized final void encipher(byte[] block, byte[] result, int[] a, int[] t) {
if(block.length != blocksize/8)
throw new IllegalArgumentException();
Modified: trunk/freenet/src/freenet/crypt/ciphers/Rijndael_Algorithm.java
===================================================================
--- trunk/freenet/src/freenet/crypt/ciphers/Rijndael_Algorithm.java 2008-05-02 11:21:43 UTC (rev 19678)
+++ trunk/freenet/src/freenet/crypt/ciphers/Rijndael_Algorithm.java 2008-05-02 12:11:58 UTC (rev 19679)
@@ -30,47 +30,53 @@
// Debugging methods and variables
// ...........................................................................
- static final String NAME = "Rijndael_Algorithm";
- static final boolean IN = true, OUT = false;
+ private static final String NAME = "Rijndael_Algorithm";
+ private static final boolean IN = true, OUT = false;
- static final boolean RDEBUG = Rijndael_Properties.GLOBAL_DEBUG;
- static final int debuglevel = RDEBUG ? Rijndael_Properties.getLevel(NAME) : 0;
- static final PrintWriter err = RDEBUG ? Rijndael_Properties.getOutput() : null;
+ private static final boolean RDEBUG = Rijndael_Properties.GLOBAL_DEBUG;
+ private static final int debuglevel = RDEBUG ? Rijndael_Properties.getLevel(NAME) : 0;
+ private static final PrintWriter err = RDEBUG ? Rijndael_Properties.getOutput() : null;
- static final boolean TRACE = Rijndael_Properties.isTraceable(NAME);
+ private static final boolean TRACE = Rijndael_Properties.isTraceable(NAME);
- static void debug (String s) { err.println(">>> "+NAME+": "+s); }
- static void trace (boolean in, String s) {
+ private static void debug(String s) {
+ err.println(">>> " + NAME + ": " + s);
+ }
+
+ private static void trace(boolean in, String s) {
if (TRACE) err.println((in?"==> ":"<== ")+NAME+ '.' +s);
}
- static void trace (String s) { if (TRACE) err.println("<=> "+NAME+ '.' +s); }
+ private static void trace(String s) {
+ if (TRACE)
+ err.println("<=> " + NAME + '.' + s);
+ }
// Constants and variables
// ...........................................................................
- static final int BLOCK_SIZE = 16; // default block size in bytes
+ private static final int BLOCK_SIZE = 16; // default block size in bytes
- static final int[] alog = new int[256];
- static final int[] log = new int[256];
+ private static final int[] alog = new int[256];
+ private static final int[] log = new int[256];
- static final byte[] S = new byte[256];
- static final byte[] Si = new byte[256];
- static final int[] T1 = new int[256];
- static final int[] T2 = new int[256];
- static final int[] T3 = new int[256];
- static final int[] T4 = new int[256];
- static final int[] T5 = new int[256];
- static final int[] T6 = new int[256];
- static final int[] T7 = new int[256];
- static final int[] T8 = new int[256];
- static final int[] U1 = new int[256];
- static final int[] U2 = new int[256];
- static final int[] U3 = new int[256];
- static final int[] U4 = new int[256];
- static final byte[] rcon = new byte[30];
+ private static final byte[] S = new byte[256];
+ private static final byte[] Si = new byte[256];
+ private static final int[] T1 = new int[256];
+ private static final int[] T2 = new int[256];
+ private static final int[] T3 = new int[256];
+ private static final int[] T4 = new int[256];
+ private static final int[] T5 = new int[256];
+ private static final int[] T6 = new int[256];
+ private static final int[] T7 = new int[256];
+ private static final int[] T8 = new int[256];
+ private static final int[] U1 = new int[256];
+ private static final int[] U2 = new int[256];
+ private static final int[] U3 = new int[256];
+ private static final int[] U4 = new int[256];
+ private static final byte[] rcon = new byte[30];
- static final int[][][] shifts = new int[][][] {
+ private static final int[][][] shifts = new int[][][] {
{ {0, 0}, {1, 3}, {2, 2}, {3, 1} },
{ {0, 0}, {1, 5}, {2, 4}, {3, 3} },
{ {0, 0}, {1, 7}, {3, 5}, {4, 4} }
@@ -271,14 +277,14 @@
}
// multiply two elements of GF(2^m)
- static final int mul (int a, int b) {
+ private static final int mul(int a, int b) {
return ((a != 0) && (b != 0)) ?
alog[(log[a & 0xFF] + log[b & 0xFF]) % 255] :
0;
}
// convenience method used in generating Transposition boxes
- static final int mul4 (int a, byte[] b) {
+ private static final int mul4(int a, byte[] b) {
if (a == 0) return 0;
a = log[a & 0xFF];
int a0 = (b[0] != 0) ? alog[(a + log[b[0] & 0xFF]) % 255] & 0xFF : 0;
@@ -471,14 +477,18 @@
}
/** A basic symmetric encryption/decryption test. */
- public static boolean self_test() { return self_test(BLOCK_SIZE); }
+ static boolean self_test() {
+ return self_test(BLOCK_SIZE);
+ }
// Rijndael own methods
// ...........................................................................
/** @return The default length in bytes of the Algorithm input block. */
- public static final int blockSize() { return BLOCK_SIZE; }
+ static final int blockSize() {
+ return BLOCK_SIZE;
+ }
/**
* Expand a user-supplied key material into a session key.
@@ -497,7 +507,7 @@
//a problem the callers should resolve among themselves.
//It is a fact that allowing no more than one makeKey on any given
//CPU will result in fewer cache misses. -- ejhuff 2003-10-12
- public final static synchronized Object makeKey (byte[] k, int blockSize)
+ final static synchronized Object makeKey(byte[] k, int blockSize)
throws InvalidKeyException {
if (RDEBUG) trace(IN, "makeKey("+k+", "+blockSize+ ')');
if (k == null)
@@ -593,7 +603,7 @@
* @param sessionKey The session key to use for encryption.
* @param blockSize The block size in bytes of this Rijndael.
*/
- public static final void
+ static final void
blockEncrypt (byte[] in, byte[] result, int inOffset, Object sessionKey, int blockSize) {
if (blockSize == BLOCK_SIZE) {
blockEncrypt(in, result, inOffset, sessionKey);
@@ -617,7 +627,7 @@
* @param sessionKey The session key to use for encryption.
* @param blockSize The block size in bytes of this Rijndael.
*/
- public static final void
+ static final void
blockEncrypt (byte[] in, byte[] result, int inOffset, Object sessionKey, int blockSize, int[] a, int[] t) {
if (blockSize == BLOCK_SIZE) {
blockEncrypt(in, result, inOffset, sessionKey);
@@ -673,7 +683,7 @@
* @param sessionKey The session key to use for decryption.
* @param blockSize The block size in bytes of this Rijndael.
*/
- public static final void
+ static final void
blockDecrypt (byte[] in, byte[] result, int inOffset, Object sessionKey, int blockSize) {
if (blockSize == BLOCK_SIZE) {
blockDecrypt(in, result, inOffset, sessionKey);
@@ -785,7 +795,7 @@
* @return The number of rounds for a given Rijndael's key and
* block sizes.
*/
- public static final int getRounds (int keySize, int blockSize) {
+ private static final int getRounds(int keySize, int blockSize) {
switch (keySize) {
case 16:
return blockSize == 16 ? 10 : (blockSize == 24 ? 12 : 14);
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