本文整理汇总了Java中org.web3j.utils.Numeric.toBytesPadded方法的典型用法代码示例。如果您正苦于以下问题：Java Numeric.toBytesPadded方法的具体用法？Java Numeric.toBytesPadded怎么用？Java Numeric.toBytesPadded使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.web3j.utils.Numeric的用法示例。
在下文中一共展示了Numeric.toBytesPadded方法的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: decodeKeyPair
import org.web3j.utils.Numeric; //导入方法依赖的package包/类
public static KeyPair decodeKeyPair(ECKeyPair ecKeyPair) {
byte[] bytes = Numeric.toBytesPadded(ecKeyPair.getPublicKey(), 64);
BigInteger x = Numeric.toBigInt(Arrays.copyOfRange(bytes, 0, 32));
BigInteger y = Numeric.toBigInt(Arrays.copyOfRange(bytes, 32, 64));
ECPoint q = curve.createPoint(x, y);
BCECPublicKey publicKey = new BCECPublicKey(ALGORITHM, new ECPublicKeyParameters(q, dp), BouncyCastleProvider.CONFIGURATION);
BCECPrivateKey privateKey = new BCECPrivateKey(ALGORITHM, new ECPrivateKeyParameters(ecKeyPair.getPrivateKey(), dp), publicKey, p, BouncyCastleProvider.CONFIGURATION);
return new KeyPair(publicKey, privateKey);
}
示例2: serialize
import org.web3j.utils.Numeric; //导入方法依赖的package包/类
public static byte[] serialize(ECKeyPair ecKeyPair) {
byte[] privateKey = Numeric.toBytesPadded(ecKeyPair.getPrivateKey(), PRIVATE_KEY_SIZE);
byte[] publicKey = Numeric.toBytesPadded(ecKeyPair.getPublicKey(), PUBLIC_KEY_SIZE);
byte[] result = Arrays.copyOf(privateKey, PRIVATE_KEY_SIZE + PUBLIC_KEY_SIZE);
System.arraycopy(publicKey, 0, result, PRIVATE_KEY_SIZE, PUBLIC_KEY_SIZE);
return result;
}
示例3: signMessage
import org.web3j.utils.Numeric; //导入方法依赖的package包/类
public static SignatureData signMessage(byte[] message, ECKeyPair keyPair) {
BigInteger publicKey = keyPair.getPublicKey();
byte[] messageHash = Hash.sha3(message);
ECDSASignature sig = keyPair.sign(messageHash);
// Now we have to work backwards to figure out the recId needed to recover the signature.
int recId = -1;
for (int i = 0; i < 4; i++) {
BigInteger k = recoverFromSignature(i, sig, messageHash);
if (k != null && k.equals(publicKey)) {
recId = i;
break;
}
}
if (recId == -1) {
throw new RuntimeException(
"Could not construct a recoverable key. This should never happen.");
}
int headerByte = recId + 27;
// 1 header + 32 bytes for R + 32 bytes for S
byte v = (byte) headerByte;
byte[] r = Numeric.toBytesPadded(sig.r, 32);
byte[] s = Numeric.toBytesPadded(sig.s, 32);
return new SignatureData(v, r, s);
}
示例4: serialize
import org.web3j.utils.Numeric; //导入方法依赖的package包/类
@Override
public ByteBuffer serialize(Uint256 value, ProtocolVersion protocolVersion) throws InvalidTypeException {
if (value == null) return null;
byte[] bytes = Numeric.toBytesPadded(value.getValue(), BYTES);
return ByteBuffer.wrap(bytes);
}
示例5: serialize
import org.web3j.utils.Numeric; //导入方法依赖的package包/类
@Override
public ByteBuffer serialize(Address value, ProtocolVersion protocolVersion) throws InvalidTypeException {
if (value == null) return null;
byte[] bytes = Numeric.toBytesPadded(value.toUint160().getValue(), BYTES);
return ByteBuffer.wrap(bytes);
}
示例6: create
import org.web3j.utils.Numeric; //导入方法依赖的package包/类
public static WalletFile create(String password, ECKeyPair ecKeyPair, int n, int p)
throws CipherException {
byte[] salt = generateRandomBytes(32);
byte[] derivedKey = generateDerivedScryptKey(
password.getBytes(UTF_8), salt, n, R, p, DKLEN);
byte[] encryptKey = Arrays.copyOfRange(derivedKey, 0, 16);
byte[] iv = generateRandomBytes(16);
byte[] privateKeyBytes =
Numeric.toBytesPadded(ecKeyPair.getPrivateKey(), Keys.PRIVATE_KEY_SIZE);
byte[] cipherText = performCipherOperation(
Cipher.ENCRYPT_MODE, iv, encryptKey, privateKeyBytes);
byte[] mac = generateMac(derivedKey, cipherText);
return createWalletFile(ecKeyPair, cipherText, iv, salt, mac, n, p);
}