本文整理了Java中org.spongycastle.crypto.macs.HMac.update()方法的一些代码示例，展示了HMac.update()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。HMac.update()方法的具体详情如下：
包路径：org.spongycastle.crypto.macs.HMac
类名称：HMac
方法名：update
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代码示例来源：origin: com.madgag.spongycastle/bctls-jdk15on
public void update(byte[] input, int inOff, int length)
{
hmac.update(input, inOff, length);
}代码示例来源：origin: com.madgag.spongycastle/core
/**
* Performs the expand part of the key derivation function, using currentT
* as input and output buffer.
*
* @throws DataLengthException if the total number of bytes generated is larger than the one
* specified by RFC 5869 (255 * HashLen)
*/
private void expandNext()
throws DataLengthException
{
int n = generatedBytes / hashLen + 1;
if (n >= 256)
{
throw new DataLengthException(
"HKDF cannot generate more than 255 blocks of HashLen size");
}
// special case for T(0): T(0) is empty, so no update
if (generatedBytes != 0)
{
hMacHash.update(currentT, 0, hashLen);
}
hMacHash.update(info, 0, info.length);
hMacHash.update((byte)n);
hMacHash.doFinal(currentT, 0);
}代码示例来源：origin: fr.acinq/bitcoinj-core
static byte[] hmacSha512(HMac hmacSha512, byte[] input) {
hmacSha512.reset();
hmacSha512.update(input, 0, input.length);
byte[] out = new byte[64];
hmacSha512.doFinal(out, 0);
return out;
}代码示例来源：origin: cash.bitcoinj/bitcoinj-core
static byte[] hmacSha512(HMac hmacSha512, byte[] input) {
hmacSha512.reset();
hmacSha512.update(input, 0, input.length);
byte[] out = new byte[64];
hmacSha512.doFinal(out, 0);
return out;
}代码示例来源：origin: com.google/bitcoinj
static byte[] hmacSha512(HMac hmacSha512, byte[] input) {
hmacSha512.reset();
hmacSha512.update(input, 0, input.length);
byte[] out = new byte[64];
hmacSha512.doFinal(out, 0);
return out;
}代码示例来源：origin: HashEngineering/dashj
static byte[] hmacSha512(HMac hmacSha512, byte[] input) {
hmacSha512.reset();
hmacSha512.update(input, 0, input.length);
byte[] out = new byte[64];
hmacSha512.doFinal(out, 0);
return out;
}代码示例来源：origin: greenaddress/GreenBits
static byte[] hmacSha512(HMac hmacSha512, byte[] input) {
hmacSha512.reset();
hmacSha512.update(input, 0, input.length);
byte[] out = new byte[64];
hmacSha512.doFinal(out, 0);
return out;
}代码示例来源：origin: com.madgag.spongycastle/core
public BigInteger nextK()
{
byte[] t = new byte[((n.bitLength() + 7) / 8)];
for (;;)
{
int tOff = 0;
while (tOff < t.length)
{
hMac.update(V, 0, V.length);
hMac.doFinal(V, 0);
int len = Math.min(t.length - tOff, V.length);
System.arraycopy(V, 0, t, tOff, len);
tOff += len;
}
BigInteger k = bitsToInt(t);
if (k.compareTo(ZERO) > 0 && k.compareTo(n) < 0)
{
return k;
}
hMac.update(V, 0, V.length);
hMac.update((byte)0x00);
hMac.doFinal(K, 0);
hMac.init(new KeyParameter(K));
hMac.update(V, 0, V.length);
hMac.doFinal(V, 0);
}
}代码示例来源：origin: com.madgag.spongycastle/bctls-jdk15on
protected void hmacHash(Digest digest, byte[] secret, int secretOff, int secretLen, byte[] seed, byte[] output)
{
HMac mac = new HMac(digest);
mac.init(new KeyParameter(secret, secretOff, secretLen));
byte[] a = seed;
int macSize = mac.getMacSize();
byte[] b1 = new byte[macSize];
byte[] b2 = new byte[macSize];
int pos = 0;
while (pos < output.length)
{
mac.update(a, 0, a.length);
mac.doFinal(b1, 0);
a = b1;
mac.update(a, 0, a.length);
mac.update(seed, 0, seed.length);
mac.doFinal(b2, 0);
System.arraycopy(b2, 0, output, pos, Math.min(macSize, output.length - pos));
pos += macSize;
}
}代码示例来源：origin: com.madgag.spongycastle/core
hMac.update(V, 0, V.length);
hMac.update((byte)0x00);
hMac.update(x, 0, x.length);
hMac.update(m, 0, m.length);
hMac.update(V, 0, V.length);
hMac.update(V, 0, V.length);
hMac.update((byte)0x01);
hMac.update(x, 0, x.length);
hMac.update(m, 0, m.length);
hMac.update(V, 0, V.length);代码示例来源：origin: com.madgag.spongycastle/core
static void hmac_hash(Digest digest, byte[] secret, byte[] seed, byte[] out)
{
HMac mac = new HMac(digest);
mac.init(new KeyParameter(secret));
byte[] a = seed;
int size = digest.getDigestSize();
int iterations = (out.length + size - 1) / size;
byte[] buf = new byte[mac.getMacSize()];
byte[] buf2 = new byte[mac.getMacSize()];
for (int i = 0; i < iterations; i++)
{
mac.update(a, 0, a.length);
mac.doFinal(buf, 0);
a = buf;
mac.update(a, 0, a.length);
mac.update(seed, 0, seed.length);
mac.doFinal(buf2, 0);
System.arraycopy(buf2, 0, out, (size * i), Math.min(size, out.length - (size * i)));
}
}代码示例来源：origin: com.madgag/sc-light-jdk15on
private static void hmac_hash(Digest digest, byte[] secret, byte[] seed, byte[] out)
{
HMac mac = new HMac(digest);
KeyParameter param = new KeyParameter(secret);
byte[] a = seed;
int size = digest.getDigestSize();
int iterations = (out.length + size - 1) / size;
byte[] buf = new byte[mac.getMacSize()];
byte[] buf2 = new byte[mac.getMacSize()];
for (int i = 0; i < iterations; i++)
{
mac.init(param);
mac.update(a, 0, a.length);
mac.doFinal(buf, 0);
a = buf;
mac.init(param);
mac.update(a, 0, a.length);
mac.update(seed, 0, seed.length);
mac.doFinal(buf2, 0);
System.arraycopy(buf2, 0, out, (size * i), Math.min(size, out.length - (size * i)));
}
}代码示例来源：origin: OPCFoundation/UA-Java-Legacy
/** {@inheritDoc} */
@Override
public void signSymm(SecurityPolicy policy, byte[] key, byte[] input, int inputOffset, int verifyLen,
byte[] output, int outputOffset) throws ServiceResultException {
HMac hmac = createMac(policy.getSymmetricSignatureAlgorithm(), new KeyParameter(key));
hmac.update(input, inputOffset, verifyLen);
hmac.doFinal(output, outputOffset);
}代码示例来源：origin: com.madgag.spongycastle/core
/**
* Performs the extract part of the key derivation function.
*
* @param salt the salt to use
* @param ikm the input keying material
* @return the PRK as KeyParameter
*/
private KeyParameter extract(byte[] salt, byte[] ikm)
{
if (salt == null)
{
// TODO check if hashLen is indeed same as HMAC size
hMacHash.init(new KeyParameter(new byte[hashLen]));
}
else
{
hMacHash.init(new KeyParameter(salt));
}
hMacHash.update(ikm, 0, ikm.length);
byte[] prk = new byte[hashLen];
hMacHash.doFinal(prk, 0);
return new KeyParameter(prk);
}代码示例来源：origin: OPCFoundation/UA-Java-Legacy
new KeyParameter(key));
byte[] computedSignature = new byte[hmac.getMacSize()];
hmac.update(dataToVerify, inputOffset, verifyLen);
hmac.doFinal(computedSignature, 0);内容来源于网络，如有侵权，请联系作者删除！