SHA1Verificationpublic class SHA1Verification extends Object
| Fields Summary |
|---|
| public static final String | dirname |
| Methods Summary |
|---|
| public static void | createTestFiles()
try {
System.out.println("Creating test files ... ");
Random rand = new Random();
String rootname = "f-";
long[] sizes = { 0, 1, 50000000 };
File testdir = new File( dirname );
FileUtil.mkdirs(testdir);
for (int i=0; i < sizes.length; i++) {
long size = sizes[i];
File file = new File( testdir, rootname + String.valueOf( size ));
System.out.println( file.getName() + "...");
FileChannel fc = new RandomAccessFile( file, "rw" ).getChannel();
long position = 0;
while ( position < size ) {
long remaining = size - position;
if ( remaining > 1024000 ) remaining = 1024000;
byte[] buffer = new byte[ new Long(remaining).intValue() ];
rand.nextBytes( buffer );
ByteBuffer bb = ByteBuffer.wrap( buffer );
position += fc.write( bb );
}
fc.close();
}
System.out.println("DONE\n");
}
catch (Exception e) { Debug.printStackTrace( e ); }
| | public static void | main(java.lang.String[] args)
if (! new File( dirname ).exists()) createTestFiles();
runTests();
| | public static void | runTests()
try {
//SHA1 sha1Jmule = new SHA1();
MessageDigest sha1Sun = MessageDigest.getInstance("SHA-1");
SHA1 sha1Gudy = new SHA1();
//SHA1Az shaGudyResume = new SHA1Az();
ByteBuffer buffer = ByteBuffer.allocate( 1024 * 1024 );
File dir = new File( dirname );
File[] files = dir.listFiles();
for (int i=0; i < files.length; i++) {
FileChannel fc = new RandomAccessFile( files[i], "r" ).getChannel();
System.out.println("Testing " + files[i].getName() + " ...");
while( fc.position() < fc.size() ) {
fc.read( buffer );
buffer.flip();
byte[] raw = new byte[ buffer.limit() ];
System.arraycopy( buffer.array(), 0, raw, 0, raw.length );
sha1Gudy.update( buffer );
sha1Gudy.saveState();
ByteBuffer bb = ByteBuffer.wrap( new byte[56081] );
sha1Gudy.digest( bb );
sha1Gudy.restoreState();
sha1Sun.update( raw );
buffer.clear();
}
byte[] sun = sha1Sun.digest();
sha1Sun.reset();
byte[] gudy = sha1Gudy.digest();
sha1Gudy.reset();
if ( Arrays.equals( sun, gudy ) ) {
System.out.println(" SHA1-Gudy: OK");
}
else {
System.out.println(" SHA1-Gudy: FAILED");
}
buffer.clear();
fc.close();
System.out.println();
}
}
catch (Throwable e) { Debug.printStackTrace( e );}
|
|
