354 private final byte[] nextBuffer;
355
356 // number of bytes left in nextBuffer
357 private int buffered;
358
359 // time we read the data into the nextBuffer
360 private long lastRead;
361
362 // mutex lock for nextBytes()
363 private final Object LOCK_GET_BYTES = new Object();
364
365 // mutex lock for generateSeed()
366 private final Object LOCK_GET_SEED = new Object();
367
368 // mutex lock for setSeed()
369 private final Object LOCK_SET_SEED = new Object();
370
371 // constructor, called only once from initIO()
372 private RandomIO(File seedFile, File nextFile) throws IOException {
373 this.seedFile = seedFile;
374 seedIn = new FileInputStream(seedFile);
375 nextIn = new FileInputStream(nextFile);
376 nextBuffer = new byte[BUFFER_SIZE];
377 }
378
379 // get the SHA1PRNG for mixing
380 // initialize if not yet created
381 private sun.security.provider.SecureRandom getMixRandom() {
382 sun.security.provider.SecureRandom r = mixRandom;
383 if (r == null) {
384 synchronized (LOCK_GET_BYTES) {
385 r = mixRandom;
386 if (r == null) {
387 r = new sun.security.provider.SecureRandom();
388 try {
389 byte[] b = new byte[20];
390 readFully(nextIn, b);
391 r.engineSetSeed(b);
392 } catch (IOException e) {
393 throw new ProviderException("init failed", e);
394 }
395 mixRandom = r;
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354 private final byte[] nextBuffer;
355
356 // number of bytes left in nextBuffer
357 private int buffered;
358
359 // time we read the data into the nextBuffer
360 private long lastRead;
361
362 // mutex lock for nextBytes()
363 private final Object LOCK_GET_BYTES = new Object();
364
365 // mutex lock for generateSeed()
366 private final Object LOCK_GET_SEED = new Object();
367
368 // mutex lock for setSeed()
369 private final Object LOCK_SET_SEED = new Object();
370
371 // constructor, called only once from initIO()
372 private RandomIO(File seedFile, File nextFile) throws IOException {
373 this.seedFile = seedFile;
374 seedIn = FileInputStreamPool.getInputStream(seedFile);
375 nextIn = FileInputStreamPool.getInputStream(nextFile);
376 nextBuffer = new byte[BUFFER_SIZE];
377 }
378
379 // get the SHA1PRNG for mixing
380 // initialize if not yet created
381 private sun.security.provider.SecureRandom getMixRandom() {
382 sun.security.provider.SecureRandom r = mixRandom;
383 if (r == null) {
384 synchronized (LOCK_GET_BYTES) {
385 r = mixRandom;
386 if (r == null) {
387 r = new sun.security.provider.SecureRandom();
388 try {
389 byte[] b = new byte[20];
390 readFully(nextIn, b);
391 r.engineSetSeed(b);
392 } catch (IOException e) {
393 throw new ProviderException("init failed", e);
394 }
395 mixRandom = r;
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