Java tutorial
/* * Jitsi, the OpenSource Java VoIP and Instant Messaging client. * * Distributable under LGPL license. * See terms of license at gnu.org. */ package org.jitsi.impl.neomedia.transform.srtp; import java.nio.*; import java.security.*; import java.util.*; import javax.crypto.*; import org.bouncycastle.crypto.*; import org.bouncycastle.crypto.Mac; import org.bouncycastle.crypto.digests.*; import org.bouncycastle.crypto.engines.*; import org.bouncycastle.crypto.macs.*; import org.bouncycastle.crypto.params.*; public class CryptoBenchmark { public static void main(String[] args) throws Exception { boolean benchmarkJavaxCryptoCipher = false; boolean benchmarkNIOBlockCipher = false; for (String arg : args) { if ("-javax-crypto-cipher".equalsIgnoreCase(arg)) benchmarkJavaxCryptoCipher = true; else if ("-nio-block-cipher".equalsIgnoreCase(arg)) benchmarkNIOBlockCipher = true; } Provider sunPKCS11 = new sun.security.pkcs11.SunPKCS11( "--name=CryptoBenchmark\\n" + "nssDbMode=noDb\\n" + "attributes=compatibility"); Provider sunJCE = Security.getProvider("SunJCE"); // for (Provider provider : new Provider[] { sunPKCS11, sunJCE }) // for (Provider.Service service : provider.getServices()) // if ("Cipher".equalsIgnoreCase(service.getType())) // System.err.println(service); // org.bouncycastle.crypto.Digest & java.security.MessageDigest Digest[] digests = { new SHA1Digest(), new OpenSSLDigest(OpenSSLDigest.SHA1) }; MessageDigest[] messageDigests = { MessageDigest.getInstance("SHA-1"), MessageDigest.getInstance("SHA-1", sunPKCS11) }; int maxDigestSize = 0; int maxByteLength = 0; for (Digest digest : digests) { int digestSize = digest.getDigestSize(); if (maxDigestSize < digestSize) maxDigestSize = digestSize; int byteLength = (digest instanceof ExtendedDigest) ? ((ExtendedDigest) digest).getByteLength() : 64; if (maxByteLength < byteLength) maxByteLength = byteLength; System.err.println(digest.getClass().getName() + ": digestSize " + digestSize + ", byteLength " + byteLength + "."); } for (MessageDigest messageDigest : messageDigests) { int digestLength = messageDigest.getDigestLength(); if (maxDigestSize < digestLength) maxDigestSize = digestLength; System.err.println( messageDigest.getProvider().getClass().getName() + ": digestLength " + digestLength + "."); } // org.bouncycastle.crypto.BlockCipher BlockCipher[] ciphers = { new AESFastEngine(), new BlockCipherAdapter(Cipher.getInstance("AES_128/ECB/NoPadding", sunPKCS11)), new BlockCipherAdapter(Cipher.getInstance("AES_128/ECB/NoPadding", sunJCE)), new OpenSSLBlockCipher(OpenSSLBlockCipher.AES_128_ECB) }; for (BlockCipher cipher : ciphers) { Class<?> clazz; if (cipher instanceof BlockCipherAdapter) { clazz = ((BlockCipherAdapter) cipher).getCipher().getProvider().getClass(); } else { clazz = cipher.getClass(); } System.err.println(clazz.getName() + ": blockSize " + cipher.getBlockSize()); } // org.bouncycastle.crypto.Mac Mac[] macs = { new HMac(new SHA1Digest()), new HMac(new OpenSSLDigest(OpenSSLDigest.SHA1)), new OpenSSLHMAC(OpenSSLDigest.SHA1) }; Random random = new Random(System.currentTimeMillis()); byte[] in = new byte[1024 * maxByteLength]; ByteBuffer inNIO = ByteBuffer.allocateDirect(in.length); byte[] out = new byte[maxDigestSize]; ByteBuffer outNIO = ByteBuffer.allocateDirect(out.length); long time0 = 0; int dMax = Math.max(digests.length, messageDigests.length); final int iEnd = 1000, jEnd = 1000; // Base64.Encoder byteEncoder = Base64.getEncoder().withoutPadding(); inNIO.order(ByteOrder.nativeOrder()); outNIO.order(ByteOrder.nativeOrder()); for (int i = 0; i < iEnd; ++i) { System.err.println("========================================"); random.nextBytes(in); inNIO.clear(); inNIO.put(in); // org.bouncycastle.crypto.BlockCipher time0 = 0; for (BlockCipher blockCipher : ciphers) { NIOBlockCipher nioBlockCipher = (blockCipher instanceof NIOBlockCipher) ? (NIOBlockCipher) blockCipher : null; Cipher cipher; Class<?> clazz; if (blockCipher instanceof BlockCipherAdapter) { cipher = ((BlockCipherAdapter) blockCipher).getCipher(); clazz = cipher.getProvider().getClass(); } else { cipher = null; clazz = blockCipher.getClass(); } int blockSize = blockCipher.getBlockSize(); blockCipher.init(true, new KeyParameter(in, 0, blockSize)); long startTime, endTime; int offEnd = in.length - blockSize; if (nioBlockCipher != null && benchmarkNIOBlockCipher) { inNIO.clear(); outNIO.clear(); startTime = System.nanoTime(); for (int j = 0; j < jEnd; ++j) { for (int off = 0; off < offEnd;) { nioBlockCipher.processBlock(inNIO, off, outNIO, 0); off += blockSize; } // nioBlockCipher.reset(); } endTime = System.nanoTime(); outNIO.get(out); } else if (cipher != null && benchmarkJavaxCryptoCipher) { startTime = System.nanoTime(); for (int j = 0; j < jEnd; ++j) { for (int off = 0; off < offEnd;) { int nextOff = off + blockSize; inNIO.limit(nextOff); inNIO.position(off); outNIO.clear(); cipher.update(inNIO, outNIO); off = nextOff; } // cipher.doFinal(); } endTime = System.nanoTime(); outNIO.clear(); outNIO.get(out); } else { startTime = System.nanoTime(); for (int j = 0; j < jEnd; ++j) { for (int off = 0; off < offEnd;) { blockCipher.processBlock(in, off, out, 0); off += blockSize; } // blockCipher.reset(); } endTime = System.nanoTime(); } long time = endTime - startTime; if (time0 == 0) time0 = time; Arrays.fill(out, blockSize, out.length, (byte) 0); System.err.println(clazz.getName() + ": ratio " + String.format("%.2f", time / (double) time0) + ", time " + time + ", out " /*+ byteEncoder.encodeToString(out)*/ + "."); } // org.bouncycastle.crypto.Digest & java.security.MessageDigest System.err.println("----------------------------------------"); time0 = 0; for (int d = 0; d < dMax; ++d) { Arrays.fill(out, (byte) 0); // org.bouncycastle.crypto.Digest Digest digest = (d < digests.length) ? digests[d] : null; int byteLength = (digest instanceof ExtendedDigest) ? ((ExtendedDigest) digest).getByteLength() : 64; long startTime, endTime; int offEnd = in.length - byteLength; if (digest != null) { startTime = System.nanoTime(); for (int j = 0; j < jEnd; ++j) { for (int off = 0; off < offEnd;) { digest.update(in, off, byteLength); off += byteLength; } digest.doFinal(out, 0); } endTime = System.nanoTime(); long time = endTime - startTime; if (time0 == 0) time0 = time; System.err.println(digest.getClass().getName() + ": ratio " + String.format("%.2f", time / (double) time0) + ", time " + time + ", digest " /*+ byteEncoder.encodeToString(out)*/ + "."); } // java.security.MessageDigest MessageDigest messageDigest = (d < messageDigests.length) ? messageDigests[d] : null; if (messageDigest != null) { @SuppressWarnings("unused") byte[] t = null; startTime = System.nanoTime(); for (int j = 0; j < jEnd; ++j) { for (int off = 0; off < offEnd;) { messageDigest.update(in, off, byteLength); off += byteLength; } t = messageDigest.digest(); } endTime = System.nanoTime(); long time = endTime - startTime; if (time0 == 0) time0 = time; System.err.println(messageDigest.getProvider().getClass().getName() + ": ratio " + String.format("%.2f", time / (double) time0) + ", time " + (endTime - startTime) + ", digest " /*+ byteEncoder.encodeToString(t)*/ + "."); } } // org.bouncycastle.crypto.Mac System.err.println("----------------------------------------"); time0 = 0; for (Mac mac : macs) { mac.init(new KeyParameter(in, 0, maxByteLength)); long startTime, endTime; int offEnd = in.length - maxByteLength; startTime = System.nanoTime(); for (int j = 0; j < jEnd; ++j) { for (int off = 0; off < offEnd; off = off + maxByteLength) mac.update(in, off, maxByteLength); mac.doFinal(out, 0); } endTime = System.nanoTime(); int macSize = mac.getMacSize(); long time = endTime - startTime; if (time0 == 0) time0 = time; Arrays.fill(out, macSize, out.length, (byte) 0); System.err.println(mac.getClass().getName() + ": ratio " + String.format("%.2f", time / (double) time0) + ", time " + time + ", out " /*+ byteEncoder.encodeToString(out)*/ + "."); } } } }