本文整理了Java中org.bitcoinj.core.Utils.bigIntegerToBytes()
方法的一些代码示例,展示了Utils.bigIntegerToBytes()
的具体用法。这些代码示例主要来源于Github
/Stackoverflow
/Maven
等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。Utils.bigIntegerToBytes()
方法的具体详情如下:
包路径:org.bitcoinj.core.Utils
类名称:Utils
方法名:bigIntegerToBytes
[英]The regular java.math.BigInteger#toByteArray() method isn't quite what we often need: it appends a leading zero to indicate that the number is positive and may need padding.
[中]普通的java。数学BigInteger#toByteArray()方法并不是我们经常需要的方法:它会在前导的零后面加上一个数字,表示该数字为正,可能需要填充。
代码示例来源:origin: cash.bitcoinj/bitcoinj-core
/**
* Returns a 32 byte array containing the private key.
* @throws org.bitcoinj.core.ECKey.MissingPrivateKeyException if the private key bytes are missing/encrypted.
*/
public byte[] getPrivKeyBytes() {
return Utils.bigIntegerToBytes(getPrivKey(), 32);
}
代码示例来源:origin: greenaddress/GreenBits
/**
* Returns a 32 byte array containing the private key.
* @throws org.bitcoinj.core.ECKey.MissingPrivateKeyException if the private key bytes are missing/encrypted.
*/
public byte[] getPrivKeyBytes() {
return Utils.bigIntegerToBytes(getPrivKey(), 32);
}
代码示例来源:origin: fr.acinq/bitcoinj-core
/**
* Returns a 32 byte array containing the private key.
* @throws org.bitcoinj.core.ECKey.MissingPrivateKeyException if the private key bytes are missing/encrypted.
*/
public byte[] getPrivKeyBytes() {
return Utils.bigIntegerToBytes(getPrivKey(), 32);
}
代码示例来源:origin: HashEngineering/dashj
/**
* Returns a 32 byte array containing the private key.
* @throws org.bitcoinj.core.ECKey.MissingPrivateKeyException if the private key bytes are missing/encrypted.
*/
public byte[] getPrivKeyBytes() {
return Utils.bigIntegerToBytes(getPrivKey(), 32);
}
代码示例来源:origin: fr.acinq/bitcoinj-core
/**
* Signs a text message using the standard Bitcoin messaging signing format and returns the signature as a base64
* encoded string.
*
* @throws IllegalStateException if this ECKey does not have the private part.
* @throws KeyCrypterException if this ECKey is encrypted and no AESKey is provided or it does not decrypt the ECKey.
*/
public String signMessage(String message, @Nullable KeyParameter aesKey) throws KeyCrypterException {
byte[] data = Utils.formatMessageForSigning(message);
Sha256Hash hash = Sha256Hash.twiceOf(data);
ECDSASignature sig = sign(hash, aesKey);
// 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++) {
ECKey k = ECKey.recoverFromSignature(i, sig, hash, isCompressed());
if (k != null && k.pub.equals(pub)) {
recId = i;
break;
}
}
if (recId == -1)
throw new RuntimeException("Could not construct a recoverable key. This should never happen.");
int headerByte = recId + 27 + (isCompressed() ? 4 : 0);
byte[] sigData = new byte[65]; // 1 header + 32 bytes for R + 32 bytes for S
sigData[0] = (byte)headerByte;
System.arraycopy(Utils.bigIntegerToBytes(sig.r, 32), 0, sigData, 1, 32);
System.arraycopy(Utils.bigIntegerToBytes(sig.s, 32), 0, sigData, 33, 32);
return new String(Base64.encode(sigData), Charset.forName("UTF-8"));
}
代码示例来源:origin: cash.bitcoinj/bitcoinj-core
/**
* Signs a text message using the standard Bitcoin messaging signing format and returns the signature as a base64
* encoded string.
*
* @throws IllegalStateException if this ECKey does not have the private part.
* @throws KeyCrypterException if this ECKey is encrypted and no AESKey is provided or it does not decrypt the ECKey.
*/
public String signMessage(String message, @Nullable KeyParameter aesKey) throws KeyCrypterException {
byte[] data = Utils.formatMessageForSigning(message);
Sha256Hash hash = Sha256Hash.twiceOf(data);
ECDSASignature sig = sign(hash, aesKey);
// 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++) {
ECKey k = ECKey.recoverFromSignature(i, sig, hash, isCompressed());
if (k != null && k.pub.equals(pub)) {
recId = i;
break;
}
}
if (recId == -1)
throw new RuntimeException("Could not construct a recoverable key. This should never happen.");
int headerByte = recId + 27 + (isCompressed() ? 4 : 0);
byte[] sigData = new byte[65]; // 1 header + 32 bytes for R + 32 bytes for S
sigData[0] = (byte)headerByte;
System.arraycopy(Utils.bigIntegerToBytes(sig.r, 32), 0, sigData, 1, 32);
System.arraycopy(Utils.bigIntegerToBytes(sig.s, 32), 0, sigData, 33, 32);
return new String(Base64.encode(sigData), Charset.forName("UTF-8"));
}
代码示例来源:origin: greenaddress/GreenBits
/**
* Signs a text message using the standard Bitcoin messaging signing format and returns the signature as a base64
* encoded string.
*
* @throws IllegalStateException if this ECKey does not have the private part.
* @throws KeyCrypterException if this ECKey is encrypted and no AESKey is provided or it does not decrypt the ECKey.
*/
public String signMessage(String message, @Nullable KeyParameter aesKey) throws KeyCrypterException {
byte[] data = Utils.formatMessageForSigning(message);
Sha256Hash hash = Sha256Hash.twiceOf(data);
ECDSASignature sig = sign(hash, aesKey);
// 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++) {
ECKey k = ECKey.recoverFromSignature(i, sig, hash, isCompressed());
if (k != null && k.pub.equals(pub)) {
recId = i;
break;
}
}
if (recId == -1)
throw new RuntimeException("Could not construct a recoverable key. This should never happen.");
int headerByte = recId + 27 + (isCompressed() ? 4 : 0);
byte[] sigData = new byte[65]; // 1 header + 32 bytes for R + 32 bytes for S
sigData[0] = (byte)headerByte;
System.arraycopy(Utils.bigIntegerToBytes(sig.r, 32), 0, sigData, 1, 32);
System.arraycopy(Utils.bigIntegerToBytes(sig.s, 32), 0, sigData, 33, 32);
return new String(Base64.encode(sigData), Charset.forName("UTF-8"));
}
代码示例来源:origin: HashEngineering/dashj
/**
* Signs a text message using the standard Bitcoin messaging signing format and returns the signature as a base64
* encoded string.
*
* @throws IllegalStateException if this ECKey does not have the private part.
* @throws KeyCrypterException if this ECKey is encrypted and no AESKey is provided or it does not decrypt the ECKey.
*/
public String signMessage(String message, @Nullable KeyParameter aesKey) throws KeyCrypterException {
byte[] data = Utils.formatMessageForSigning(message);
Sha256Hash hash = Sha256Hash.twiceOf(data);
ECDSASignature sig = sign(hash, aesKey);
// 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++) {
ECKey k = ECKey.recoverFromSignature(i, sig, hash, isCompressed());
if (k != null && k.pub.equals(pub)) {
recId = i;
break;
}
}
if (recId == -1)
throw new RuntimeException("Could not construct a recoverable key. This should never happen.");
int headerByte = recId + 27 + (isCompressed() ? 4 : 0);
byte[] sigData = new byte[65]; // 1 header + 32 bytes for R + 32 bytes for S
sigData[0] = (byte)headerByte;
System.arraycopy(Utils.bigIntegerToBytes(sig.r, 32), 0, sigData, 1, 32);
System.arraycopy(Utils.bigIntegerToBytes(sig.s, 32), 0, sigData, 33, 32);
return new String(Base64.encode(sigData), Charset.forName("UTF-8"));
}
代码示例来源:origin: fr.acinq/bitcoinj-core
protected ECDSASignature doSign(Sha256Hash input, BigInteger privateKeyForSigning) {
if (Secp256k1Context.isEnabled()) {
try {
byte[] signature = NativeSecp256k1.sign(
input.getBytes(),
Utils.bigIntegerToBytes(privateKeyForSigning, 32)
);
return ECDSASignature.decodeFromDER(signature);
} catch (NativeSecp256k1Util.AssertFailException e) {
log.error("Caught AssertFailException inside secp256k1", e);
throw new RuntimeException(e);
}
}
if (FAKE_SIGNATURES)
return TransactionSignature.dummy();
checkNotNull(privateKeyForSigning);
ECDSASigner signer = new ECDSASigner(new HMacDSAKCalculator(new SHA256Digest()));
ECPrivateKeyParameters privKey = new ECPrivateKeyParameters(privateKeyForSigning, CURVE);
signer.init(true, privKey);
BigInteger[] components = signer.generateSignature(input.getBytes());
return new ECDSASignature(components[0], components[1]).toCanonicalised();
}
代码示例来源:origin: cash.bitcoinj/bitcoinj-core
protected ECDSASignature doSign(Sha256Hash input, BigInteger privateKeyForSigning) {
if (Secp256k1Context.isEnabled()) {
try {
byte[] signature = NativeSecp256k1.sign(
input.getBytes(),
Utils.bigIntegerToBytes(privateKeyForSigning, 32)
);
return ECDSASignature.decodeFromDER(signature);
} catch (NativeSecp256k1Util.AssertFailException e) {
log.error("Caught AssertFailException inside secp256k1", e);
throw new RuntimeException(e);
}
}
if (FAKE_SIGNATURES)
return TransactionSignature.dummy();
checkNotNull(privateKeyForSigning);
ECDSASigner signer = new ECDSASigner(new HMacDSAKCalculator(new SHA256Digest()));
ECPrivateKeyParameters privKey = new ECPrivateKeyParameters(privateKeyForSigning, CURVE);
signer.init(true, privKey);
BigInteger[] components = signer.generateSignature(input.getBytes());
return new ECDSASignature(components[0], components[1]).toCanonicalised();
}
代码示例来源:origin: greenaddress/GreenBits
protected ECDSASignature doSign(Sha256Hash input, BigInteger privateKeyForSigning) {
if (Secp256k1Context.isEnabled()) {
try {
byte[] signature = NativeSecp256k1.sign(
input.getBytes(),
Utils.bigIntegerToBytes(privateKeyForSigning, 32)
);
return ECDSASignature.decodeFromDER(signature);
} catch (NativeSecp256k1Util.AssertFailException e) {
log.error("Caught AssertFailException inside secp256k1", e);
throw new RuntimeException(e);
}
}
if (FAKE_SIGNATURES)
return TransactionSignature.dummy();
checkNotNull(privateKeyForSigning);
ECDSASigner signer = new ECDSASigner(new HMacDSAKCalculator(new SHA256Digest()));
ECPrivateKeyParameters privKey = new ECPrivateKeyParameters(privateKeyForSigning, CURVE);
signer.init(true, privKey);
BigInteger[] components = signer.generateSignature(input.getBytes());
return new ECDSASignature(components[0], components[1]).toCanonicalised();
}
代码示例来源:origin: HashEngineering/dashj
protected ECDSASignature doSign(Sha256Hash input, BigInteger privateKeyForSigning) {
if (Secp256k1Context.isEnabled()) {
try {
byte[] signature = NativeSecp256k1.sign(
input.getBytes(),
Utils.bigIntegerToBytes(privateKeyForSigning, 32)
);
return ECDSASignature.decodeFromDER(signature);
} catch (NativeSecp256k1Util.AssertFailException e) {
log.error("Caught AssertFailException inside secp256k1", e);
throw new RuntimeException(e);
}
}
if (FAKE_SIGNATURES)
return TransactionSignature.dummy();
checkNotNull(privateKeyForSigning);
ECDSASigner signer = new ECDSASigner(new HMacDSAKCalculator(new SHA256Digest()));
ECPrivateKeyParameters privKey = new ECPrivateKeyParameters(privateKeyForSigning, CURVE);
signer.init(true, privKey);
BigInteger[] components = signer.generateSignature(input.getBytes());
return new ECDSASignature(components[0], components[1]).toCanonicalised();
}
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