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Experimentally changing the nonce type to BigInteger

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This commit is contained in:
Nelson R. Perez 2017-11-02 16:30:25 -05:00
parent 33a330f44a
commit fc91f7366c
3 changed files with 41 additions and 24 deletions
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44
graphenej/src/main/java/cy/agorise/graphenej/objects/Memo.java
View file

@ -11,6 +11,7 @@ import org.bitcoinj.core.ECKey;
import org.spongycastle.math.ec.ECPoint;
import java.lang.reflect.Type;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;
@ -36,7 +37,7 @@ public class Memo implements ByteSerializable, JsonSerializable {
private Address from;
private Address to;
private long nonce;
private BigInteger nonce;
private byte[] message;
private String plaintextMessage;
@ -67,7 +68,7 @@ public class Memo implements ByteSerializable, JsonSerializable {
* @param nonce: Nonce used in the encryption.
* @param message: Message in ciphertext.
*/
public Memo(Address from, Address to, long nonce, byte[] message){
public Memo(Address from, Address to, BigInteger nonce, byte[] message){
this.from = from;
this.to = to;
this.nonce = nonce;
@ -90,7 +91,7 @@ public class Memo implements ByteSerializable, JsonSerializable {
return this.to;
}
public long getNonce(){
public BigInteger getNonce(){
return this.nonce;
}
@ -113,15 +114,17 @@ public class Memo implements ByteSerializable, JsonSerializable {
* @param message: Plaintext message.
* @return: The encrypted version of the message.
*/
public static byte[] encryptMessage(ECKey privateKey, PublicKey publicKey, long nonce, String message){
public static byte[] encryptMessage(ECKey privateKey, PublicKey publicKey, BigInteger nonce, String message){
byte[] encrypted = null;
try {
MessageDigest sha256 = MessageDigest.getInstance("SHA-256");
MessageDigest sha512 = MessageDigest.getInstance("SHA-512");
// Getting nonce bytes
String stringNonce = String.format("%d", nonce);
byte[] nonceBytes = Arrays.copyOfRange(Util.hexlify(stringNonce), 0, stringNonce.length());
byte[] paddedNonceBytes = new byte[8];
byte[] originalNonceBytes = nonce.toByteArray();
System.arraycopy(originalNonceBytes, 0, paddedNonceBytes, 8 - originalNonceBytes.length, originalNonceBytes.length);
// byte[] nonceBytes = nonce.toByteArray();
// Getting shared secret
byte[] secret = publicKey.getKey().getPubKeyPoint().multiply(privateKey.getPrivKey()).normalize().getXCoord().getEncoded();
@ -129,7 +132,7 @@ public class Memo implements ByteSerializable, JsonSerializable {
// SHA-512 of shared secret
byte[] ss = sha512.digest(secret);
byte[] seed = Bytes.concat(nonceBytes, Util.hexlify(Util.bytesToHex(ss)));
byte[] seed = Bytes.concat(paddedNonceBytes, Util.hexlify(Util.bytesToHex(ss)));
// Calculating checksum
byte[] sha256Msg = sha256.digest(message.getBytes());
@ -154,7 +157,7 @@ public class Memo implements ByteSerializable, JsonSerializable {
* @param message: Plaintext message.
* @return: The encrypted version of the message.
*/
public static byte[] encryptMessage(ECKey privateKey, Address destinationAddress, long nonce, String message){
public static byte[] encryptMessage(ECKey privateKey, Address destinationAddress, BigInteger nonce, String message){
return encryptMessage(privateKey, destinationAddress.getPublicKey(), nonce, message);
}
@ -168,15 +171,19 @@ public class Memo implements ByteSerializable, JsonSerializable {
* @return: The plaintext version of the enrcrypted message.
* @throws ChecksumException
*/
public static String decryptMessage(ECKey privateKey, PublicKey publicKey, long nonce, byte[] message) throws ChecksumException {
public static String decryptMessage(ECKey privateKey, PublicKey publicKey, BigInteger nonce, byte[] message) throws ChecksumException {
String plaintext = "";
try {
MessageDigest sha256 = MessageDigest.getInstance("SHA-256");
MessageDigest sha512 = MessageDigest.getInstance("SHA-512");
// Getting nonce bytes
String stringNonce = String.format("%d", nonce);
byte[] nonceBytes = Arrays.copyOfRange(Util.hexlify(stringNonce), 0, stringNonce.length());
byte[] paddedNonceBytes = new byte[8];
byte[] originalNonceBytes = nonce.toByteArray();
System.arraycopy(originalNonceBytes, 0, paddedNonceBytes, 8 - originalNonceBytes.length, originalNonceBytes.length);
System.out.println("Nonce Bytes length......: "+originalNonceBytes.length);
System.out.println("Templated Bytes.........: "+Util.bytesToHex(originalNonceBytes));
System.out.println("Nonce bytes.............: "+Util.bytesToHex(paddedNonceBytes));
// Getting shared secret
byte[] secret = publicKey.getKey().getPubKeyPoint().multiply(privateKey.getPrivKey()).normalize().getXCoord().getEncoded();
@ -184,7 +191,8 @@ public class Memo implements ByteSerializable, JsonSerializable {
// SHA-512 of shared secret
byte[] ss = sha512.digest(secret);
byte[] seed = Bytes.concat(nonceBytes, Util.hexlify(Util.bytesToHex(ss)));
byte[] seed = Bytes.concat(paddedNonceBytes, Util.hexlify(Util.bytesToHex(ss)));
System.out.println("seed: "+Util.bytesToHex(seed));
// Calculating checksum
byte[] sha256Msg = sha256.digest(message);
@ -215,7 +223,7 @@ public class Memo implements ByteSerializable, JsonSerializable {
* @return: The plaintext version of the enrcrypted message.
* @throws ChecksumException
*/
public static String decryptMessage(ECKey privateKey, Address sourceAddress, long nonce, byte[] message) throws ChecksumException {
public static String decryptMessage(ECKey privateKey, Address sourceAddress, BigInteger nonce, byte[] message) throws ChecksumException {
return decryptMessage(privateKey, sourceAddress.getPublicKey(), nonce, message);
}
@ -236,7 +244,7 @@ public class Memo implements ByteSerializable, JsonSerializable {
new byte[]{(byte) this.message.length},
this.message);
} else {
byte[] nonceBytes = Util.revertLong(nonce);
byte[] nonceBytes = Util.revertBytes(nonce.toByteArray());
ECPoint senderPoint = ECKey.compressPoint(from.getPublicKey().getKey().getPubKeyPoint());
PublicKey senderPublicKey = new PublicKey(ECKey.fromPublicOnly(senderPoint));
@ -288,7 +296,13 @@ public class Memo implements ByteSerializable, JsonSerializable {
JsonObject jsonObject = json.getAsJsonObject();
String fromAddress = jsonObject.get(KEY_FROM).getAsString();
String toAddress = jsonObject.get(KEY_TO).getAsString();
long nonce = Long.parseLong(jsonObject.get(KEY_NONCE).getAsString(), 16);
BigInteger nonce;
System.out.println("Trying to deserialize memo with nonce: <"+jsonObject.get(KEY_NONCE).getAsString()+">");
try{
nonce = new BigInteger(jsonObject.get(KEY_NONCE).getAsString(), 10);
}catch(NumberFormatException e){
nonce = new BigInteger(jsonObject.get(KEY_NONCE).getAsString(), 16);
}
String msg = jsonObject.get(KEY_MESSAGE).getAsString();
Memo memo = null;
try{

3
graphenej/src/test/java/cy/agorise/graphenej/TransactionTest.java
View file

@ -11,6 +11,7 @@ import org.junit.Before;
import org.junit.Test;
import java.io.IOException;
import java.math.BigInteger;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.List;
@ -143,7 +144,7 @@ public class TransactionTest {
PublicKey to2 = new PublicKey(ECKey.fromPublicOnly(new BrainKey(BILTHON_16_BRAIN_KEY, 0).getPublicKey()));
// Creating memo
long nonce = 1;
BigInteger nonce = BigInteger.ONE;
byte[] encryptedMessage = Memo.encryptMessage(sourcePrivateKey, to1, nonce, "another message");
Memo memo = new Memo(new Address(ECKey.fromPublicOnly(sourcePrivateKey.getPubKey())), new Address(to1.getKey()), nonce, encryptedMessage);

18
graphenej/src/test/java/cy/agorise/graphenej/objects/MemoTest.java
View file

@ -10,6 +10,8 @@ import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import java.math.BigInteger;
import cy.agorise.graphenej.Address;
import cy.agorise.graphenej.TestAccounts;
import cy.agorise.graphenej.PublicKey;
@ -36,10 +38,10 @@ public class MemoTest {
private String longerMessage = "testing now longer string with some special charaters é ç o ú á í Í mMno!!";
private byte[] shortEncryptedMessage = Util.hexToBytes("93c398e05f2a36a535f82880032a062d");
private long shortEncryptedMessageNonce = 386471255144360L;
private BigInteger shortEncryptedMessageNonce = new BigInteger("386471255144360");
private byte[] longerEncryptedMessage = Util.hexToBytes("8ba8f5ed85ad9f7675bd30408a28d6f6ba138476d1e995dd61c01f0041ab25911e04d93fe4ce30e4f6c9a5134cceb67d653e140aa542da19ce2fc646bcde46e088da06a9327eaac79ffe8bc9d71d586195c04bb023995f18e66c9f9e5c6b0d7c");
private long longEncryptedMessageNonce = 386469162162343L;
private BigInteger longEncryptedMessageNonce = new BigInteger("386469162162343");
@Before
public void setUp() throws Exception {
@ -92,7 +94,7 @@ public class MemoTest {
@Test
public void shouldEncryptAndDecryptShortMessage(){
try {
long nonce = 1;
BigInteger nonce = BigInteger.ONE;
byte[] encrypted = Memo.encryptMessage(sourcePrivate, destinationAddress, nonce, shortMessage);
String decrypted = Memo.decryptMessage(destinationPrivate, sourceAddress, nonce, encrypted);
System.out.println("Short Decrypted Message: " + decrypted);
@ -105,7 +107,7 @@ public class MemoTest {
@Test
public void shouldEncryptAndDecryptLongerMessage(){
try{
long nonce = 1;
BigInteger nonce = BigInteger.ONE;
byte[] longEncrypted = Memo.encryptMessage(sourcePrivate, destinationAddress, nonce, longerMessage);
String longDecrypted = Memo.decryptMessage(destinationPrivate, sourceAddress, nonce, longEncrypted);
System.out.println("Long Decrypted Message: " + longDecrypted);
@ -138,20 +140,20 @@ public class MemoTest {
@Test
public void shouldBeByteSerializable(){
String byteReference = "01029392096400eafe5f5ce7e2ab74134c3422fc49e5853bdeb298fb096258e26f6303d1fb8c7421db64d46fba7e36f428854ca06eff65698b293f37c7ffaa54e2c2b20100000000000000104ccbca3750fd2e531441de02b23fe6c7";
byte[] encrypted = Memo.encryptMessage(sourcePrivate, destinationAddress, 1, shortMessage);
Memo memo = new Memo(sourceAddress, destinationAddress, 1, encrypted);
byte[] encrypted = Memo.encryptMessage(sourcePrivate, destinationAddress, BigInteger.ONE, shortMessage);
Memo memo = new Memo(sourceAddress, destinationAddress, BigInteger.ONE, encrypted);
byte[] memoBytes = memo.toBytes();
assertEquals("Memo instance should generate a valid byte array", byteReference, Util.bytesToHex(memoBytes));
}
@Test
public void shouldDeserializeFromString(){
String jsonMemo = "{\"from\": \"BTS6nB7gw1EawYXRofLvuivLsboVmh2inXroQgSQqYfAc5Bamk4Vq\",\"to\": \"BTS4xAQGg2ePLeDGZvQFpsh9CjMhQvRnVkPp6jPoE6neVPotRfZX9\",\"nonce\": \"15f2d8ee4ec23\",\"message\": \"b9aeb7632f1f4281eedcf28a684828a42d02de71254fb88e13ddcb9a79adf51d9770c58d7e7efcdbb1515f1136c3be3e\"}";
String jsonMemo = "{\"from\": \"BTS6nB7gw1EawYXRofLvuivLsboVmh2inXroQgSQqYfAc5Bamk4Vq\",\"to\": \"BTS4xAQGg2ePLeDGZvQFpsh9CjMhQvRnVkPp6jPoE6neVPotRfZX9\",\"nonce\": \"8000000000000000\",\"message\": \"b9aeb7632f1f4281eedcf28a684828a42d02de71254fb88e13ddcb9a79adf51d9770c58d7e7efcdbb1515f1136c3be3e\"}";
GsonBuilder gsonBuilder = new GsonBuilder().registerTypeAdapter(Memo.class, new Memo.MemoDeserializer());
Memo memo = gsonBuilder.create().fromJson(jsonMemo, Memo.class);
Assert.assertEquals("Source address should match the serialized one", "BTS6nB7gw1EawYXRofLvuivLsboVmh2inXroQgSQqYfAc5Bamk4Vq", memo.getSource().toString());
Assert.assertEquals("Destination address should match the serialized one", "BTS4xAQGg2ePLeDGZvQFpsh9CjMhQvRnVkPp6jPoE6neVPotRfZX9", memo.getDestination().toString());
Assert.assertEquals("Nonce should match serialized one", Long.parseLong("15f2d8ee4ec23", 16), memo.getNonce());
Assert.assertEquals("Nonce should match serialized one", new BigInteger("8000000000000000", 10), memo.getNonce());
Assert.assertArrayEquals(Util.hexToBytes("b9aeb7632f1f4281eedcf28a684828a42d02de71254fb88e13ddcb9a79adf51d9770c58d7e7efcdbb1515f1136c3be3e"), memo.getByteMessage());
}
}