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package com.iota.iri.hash;
import com.iota.iri.model.Hash;
import com.iota.iri.model.HashFactory;
import com.iota.iri.utils.Converter;
import org.junit.Assert;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.math.BigInteger;
import java.util.Arrays;
import java.util.Random;
/**
* Created by alon on 04/08/17.
*/
public class KerlTest {
final static Random seed = new Random();
Logger log = LoggerFactory.getLogger(CurlTest.class);
final static Random rnd_seed = new Random();
//Test conversion functions:
@Test
public void tritsFromBigInt() throws Exception {
long value = 1433452143;
int size = 50;
byte[] trits = new byte[size];
Converter.copyTrits(value, trits, 0, trits.length);
BigInteger bigInteger = Kerl.bigIntFromTrits(trits, 0, trits.length);
byte[] outTrits = new byte[size];
Kerl.tritsFromBigInt(bigInteger, outTrits, 0, size);
Assert.assertTrue(Arrays.equals(trits, outTrits));
}
@Test
public void bytesFromBigInt() throws Exception {
int byte_size = 48;
BigInteger bigInteger = new BigInteger("13190295509826637194583200125168488859623001289643321872497025844241981297292953903419783680940401133507992851240799");
byte[] outBytes = new byte[Kerl.BYTE_HASH_LENGTH];
Kerl.bytesFromBigInt(bigInteger, outBytes);
BigInteger out_bigInteger = new BigInteger(outBytes);
Assert.assertTrue(bigInteger.equals(out_bigInteger));
}
@Test
public void loopRandBytesFromBigInt() throws Exception {
//generate random bytes, turn them to trits and back
int byte_size = 48;
int trit_size = 243;
byte[] inBytes = new byte[byte_size];
byte[] trits = new byte[Kerl.HASH_LENGTH];
byte[] outBytes = new byte[Kerl.BYTE_HASH_LENGTH];
for (int i = 0; i < 10_000; i++) {
seed.nextBytes(inBytes);
BigInteger in_bigInteger = new BigInteger(inBytes);
Kerl.tritsFromBigInt(in_bigInteger, trits, 0, trit_size);
BigInteger out_bigInteger = Kerl.bigIntFromTrits(trits, 0, trit_size);
Kerl.bytesFromBigInt(out_bigInteger, outBytes);
if (i % 1_000 == 0) {
System.out.println(String.format("%d iteration: %s", i, in_bigInteger));
}
Assert.assertTrue(String.format("bigInt that failed: %s", in_bigInteger), Arrays.equals(inBytes, outBytes));
}
}
@Test
public void loopRandTritsFromBigInt() throws Exception {
//generate random bytes, turn them to trits and back
int byte_size = 48;
int trit_size = 243;
byte[] inTrits;
byte[] bytes = new byte[Kerl.BYTE_HASH_LENGTH];
byte[] outTrits = new byte[Kerl.HASH_LENGTH];
for (int i = 0; i < 10_000; i++) {
inTrits = getRandomTrits(trit_size);
inTrits[242] = 0;
BigInteger in_bigInteger = Kerl.bigIntFromTrits(inTrits, 0, trit_size);
Kerl.bytesFromBigInt(in_bigInteger, bytes);
BigInteger out_bigInteger = new BigInteger(bytes);
Kerl.tritsFromBigInt(out_bigInteger, outTrits, 0, trit_size);
if (i % 1_000 == 0) {
System.out.println(String.format("%d iteration: %s", i, in_bigInteger));
}
Assert.assertTrue(String.format("bigInt that failed: %s", in_bigInteger), Arrays.equals(inTrits, outTrits));
}
}
@Test
public void limitBigIntFromTrits() {
// this confirms that the long math does not produce an overflow.
byte[] trits = new byte[Kerl.MAX_POWERS_LONG];
Arrays.fill(trits, (byte) 1);
BigInteger result = Kerl.bigIntFromTrits(trits, 0, trits.length);
Arrays.fill(trits, (byte) 1);
BigInteger expected = BigInteger.ZERO;
for (int i = trits.length; i-- > 0; ) {
expected = expected.multiply(BigInteger.valueOf(Converter.RADIX)).add(BigInteger.valueOf(trits[i]));
}
Assert.assertTrue("Overflow in long math", expected.equals(result));
}
//@Test
public void generateBytesFromBigInt() throws Exception {
System.out.println("bigInteger,ByteArray");
for (int i = 0; i < 100_000; i++) {
int byte_size = 48;
byte[] outBytes = new byte[byte_size];
seed.nextBytes(outBytes);
BigInteger out_bigInteger = new BigInteger(outBytes);
System.out.println(String.format("%s,%s", out_bigInteger, Arrays.toString(out_bigInteger.toByteArray())));
//Assert.assertTrue(bigInteger.equals(out_bigInteger));
}
}
//@Test
public void benchmarkCurl() {
int i;
Hash hash;
long start, diff;
long maxdiff = 0, sumdiff = 0, subSumDiff = 0;
int max = 100;// was 10000;
int interval = 1000;
String test = "curl";
for (i = 0; i++ < max; ) {
//pre
int size = 8019;
byte[] in_trits = getRandomTrits(size);
byte[] hash_trits = new byte[Curl.HASH_LENGTH];
start = System.nanoTime();
//measured
// Curl curl;
// curl = new Curl();
// curl.absorb(in_trits, 0, in_trits.length);
// curl.squeeze(hash_trits, 0, Curl.HASH_LENGTH);
Kerl kerl;
kerl = new Kerl();
kerl.absorb(in_trits, 0, in_trits.length);
kerl.squeeze(hash_trits, 0, Curl.HASH_LENGTH);
diff = System.nanoTime() - start;
//post
String out_trytes = Converter.trytes(hash_trits);
sumdiff += diff;
subSumDiff += diff;
if (diff > maxdiff) {
maxdiff = diff;
}
if (i % interval == 0) {
//log.info("{}", new String(new char[(int) ((diff / 10000))]).replace('\0', '|'));
}
if (i % interval == 0) {
log.info("Run time for {}: {} us.\tInterval Time: {} us.\tMax time per iter: {} us. \tAverage: {} us.\t Total time: {} us.", i,
(diff / 1000), subSumDiff / 1000, (maxdiff / 1000), sumdiff / i / 1000, sumdiff / 1000);
subSumDiff = 0;
maxdiff = 0;
}
}
}
@Test
public void kerlOneAbsorb() throws Exception {
byte[] initial_value = Converter.allocatingTritsFromTrytes("EMIDYNHBWMBCXVDEFOFWINXTERALUKYYPPHKP9JJFGJEIUY9MUDVNFZHMMWZUYUSWAIOWEVTHNWMHANBH");
Sponge k = SpongeFactory.create(SpongeFactory.Mode.KERL);
k.absorb(initial_value, 0, initial_value.length);
byte[] hash_value = new byte[Curl.HASH_LENGTH];
k.squeeze(hash_value, 0, hash_value.length);
String hash = Converter.trytes(hash_value);
Assert.assertEquals("EJEAOOZYSAWFPZQESYDHZCGYNSTWXUMVJOVDWUNZJXDGWCLUFGIMZRMGCAZGKNPLBRLGUNYWKLJTYEAQX", hash);
}
@Test
public void kerlMultiSqueeze() throws Exception {
byte[] initial_value = Converter.allocatingTritsFromTrytes("9MIDYNHBWMBCXVDEFOFWINXTERALUKYYPPHKP9JJFGJEIUY9MUDVNFZHMMWZUYUSWAIOWEVTHNWMHANBH");
Sponge k = SpongeFactory.create(SpongeFactory.Mode.KERL);
k.absorb(initial_value, 0, initial_value.length);
byte[] hash_value = new byte[Curl.HASH_LENGTH * 2];
k.squeeze(hash_value, 0, hash_value.length);
String hash = Converter.trytes(hash_value);
Assert.assertEquals("G9JYBOMPUXHYHKSNRNMMSSZCSHOFYOYNZRSZMAAYWDYEIMVVOGKPJBVBM9TDPULSFUNMTVXRKFIDOHUXXVYDLFSZYZTWQYTE9SPYYWYTXJYQ9IFGYOLZXWZBKWZN9QOOTBQMWMUBLEWUEEASRHRTNIQWJQNDWRYLCA", hash);
}
@Test
public void kerlMultiAbsorbMultiSqueeze() throws Exception {
byte[] initial_value = Converter.allocatingTritsFromTrytes("G9JYBOMPUXHYHKSNRNMMSSZCSHOFYOYNZRSZMAAYWDYEIMVVOGKPJBVBM9TDPULSFUNMTVXRKFIDOHUXXVYDLFSZYZTWQYTE9SPYYWYTXJYQ9IFGYOLZXWZBKWZN9QOOTBQMWMUBLEWUEEASRHRTNIQWJQNDWRYLCA");
Sponge k = SpongeFactory.create(SpongeFactory.Mode.KERL);
k.absorb(initial_value, 0, initial_value.length);
byte[] hash_value = new byte[Curl.HASH_LENGTH * 2];
k.squeeze(hash_value, 0, hash_value.length);
String hash = Converter.trytes(hash_value);
Assert.assertEquals("LUCKQVACOGBFYSPPVSSOXJEKNSQQRQKPZC9NXFSMQNRQCGGUL9OHVVKBDSKEQEBKXRNUJSRXYVHJTXBPDWQGNSCDCBAIRHAQCOWZEBSNHIJIGPZQITIBJQ9LNTDIBTCQ9EUWKHFLGFUVGGUWJONK9GBCDUIMAYMMQX", hash);
}
public static byte[] getRandomTrits(int length) {
byte[] out = new byte[length];
for(int i = 0; i < out.length; i++) {
out[i] = (byte) (rnd_seed.nextInt(3) - 1);
}
return out;
}
public static Hash getRandomTransactionHash() {
return HashFactory.TRANSACTION.create(getRandomTrits(Hash.SIZE_IN_TRITS));
}
//@Test
public void generateTrytesAndHashes() throws Exception {
System.out.println("trytes,Kerl_hash");
for (int i = 0; i < 10000; i++) {
Hash trytes = getRandomTransactionHash();
byte[] initial_value = trytes.trits();
Sponge k = SpongeFactory.create(SpongeFactory.Mode.KERL);
k.absorb(initial_value, 0, initial_value.length);
byte[] hash_value = new byte[Curl.HASH_LENGTH];
k.squeeze(hash_value, 0, hash_value.length);
String hash = Converter.trytes(hash_value);
System.out.println(String.format("%s,%s", trytes, hash));
}
}
//@Test
public void generateTrytesAndMultiSqueeze() throws Exception {
System.out.println("trytes,Kerl_squeeze1,Kerl_squeeze2,Kerl_squeeze3");
for (int i = 0; i < 10000; i++) {
Hash trytes = getRandomTransactionHash();
byte[] initial_value = trytes.trits();
Sponge k = SpongeFactory.create(SpongeFactory.Mode.KERL);
k.absorb(initial_value, 0, initial_value.length);
byte[] hash_value = new byte[Curl.HASH_LENGTH];
k.squeeze(hash_value, 0, hash_value.length);
String hash1 = Converter.trytes(hash_value);
k.squeeze(hash_value, 0, hash_value.length);
String hash2 = Converter.trytes(hash_value);
k.squeeze(hash_value, 0, hash_value.length);
String hash3 = Converter.trytes(hash_value);
System.out.println(String.format("%s,%s,%s,%s", trytes, hash1, hash2, hash3));
}
}
//@Test
public void generateMultiTrytesAndHash() throws Exception {
System.out.println("multiTrytes,Kerl_hash");
for (int i = 0; i < 10000; i++) {
String multi = String.format("%s%s%s", getRandomTransactionHash(), getRandomTransactionHash(), getRandomTransactionHash());
byte[] initial_value = Converter.allocatingTritsFromTrytes(multi);
Sponge k = SpongeFactory.create(SpongeFactory.Mode.KERL);
k.absorb(initial_value, 0, initial_value.length);
byte[] hash_value = new byte[Curl.HASH_LENGTH];
k.squeeze(hash_value, 0, hash_value.length);
String hash = Converter.trytes(hash_value);
System.out.println(String.format("%s,%s", multi, hash));
}
}
//@Test
public void generateHashes() throws Exception {
//System.out.println("trytes,Kerl_hash");
for (int i = 0; i < 1_000_000; i++) {
Hash trytes = getRandomTransactionHash();
byte[] initial_value = trytes.trits();
Sponge k = SpongeFactory.create(SpongeFactory.Mode.KERL);
k.absorb(initial_value, 0, initial_value.length);
byte[] hash_value = new byte[Curl.HASH_LENGTH];
k.squeeze(hash_value, 0, hash_value.length);
String hash = Converter.trytes(hash_value);
//System.out.println(String.format("%s,%s",trytes,hash));
System.out.println(String.format("%s", hash));
}
}
}