本文整理汇总了Java中sun.security.jca.JCAUtil类的典型用法代码示例。如果您正苦于以下问题：Java JCAUtil类的具体用法？Java JCAUtil怎么用？Java JCAUtil使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
JCAUtil类属于sun.security.jca包，在下文中一共展示了JCAUtil类的9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: engineUpdate
import sun.security.jca.JCAUtil; //导入依赖的package包/类
/**
* Update the digest using the specified ByteBuffer. The digest is
* updated using the {@code input.remaining()} bytes starting
* at {@code input.position()}.
* Upon return, the buffer's position will be equal to its limit;
* its limit will not have changed.
*
* @param input the ByteBuffer
* @since 1.5
*/
protected void engineUpdate(ByteBuffer input) {
if (input.hasRemaining() == false) {
return;
}
if (input.hasArray()) {
byte[] b = input.array();
int ofs = input.arrayOffset();
int pos = input.position();
int lim = input.limit();
engineUpdate(b, ofs + pos, lim - pos);
input.position(lim);
} else {
int len = input.remaining();
int n = JCAUtil.getTempArraySize(len);
if ((tempArray == null) || (n > tempArray.length)) {
tempArray = new byte[n];
}
while (len > 0) {
int chunk = Math.min(len, tempArray.length);
input.get(tempArray, 0, chunk);
engineUpdate(tempArray, 0, chunk);
len -= chunk;
}
}
}
示例2: engineSign
import sun.security.jca.JCAUtil; //导入依赖的package包/类
@Override
protected byte[] engineSign() throws SignatureException {
byte[] s = privateKey.getS().toByteArray();
ECParameterSpec params = privateKey.getParams();
// DER OID
byte[] encodedParams = ECUtil.encodeECParameterSpec(null, params);
int keySize = params.getCurve().getField().getFieldSize();
// seed is twice the key size (in bytes) plus 1
byte[] seed = new byte[(((keySize + 7) >> 3) + 1) * 2];
if (random == null) {
random = JCAUtil.getSecureRandom();
}
random.nextBytes(seed);
try {
return encodeSignature(
signDigest(getDigestValue(), s, encodedParams, seed));
} catch (GeneralSecurityException e) {
throw new SignatureException("Could not sign data", e);
}
}
示例3: generateKeyPair
import sun.security.jca.JCAUtil; //导入依赖的package包/类
/**
* Generates a pair of keys usable by any JavaSecurity compliant
* DSA implementation.
*/
public KeyPair generateKeyPair() {
if (random == null) {
random = JCAUtil.getSecureRandom();
}
DSAParameterSpec spec;
try {
if (forceNewParameters) {
// generate new parameters each time
spec = ParameterCache.getNewDSAParameterSpec(plen, qlen, random);
} else {
if (params == null) {
params =
ParameterCache.getDSAParameterSpec(plen, qlen, random);
}
spec = params;
}
} catch (GeneralSecurityException e) {
throw new ProviderException(e);
}
return generateKeyPair(spec.getP(), spec.getQ(), spec.getG(), random);
}
示例4: engineUpdate
import sun.security.jca.JCAUtil; //导入依赖的package包/类
/**
* Update the digest using the specified ByteBuffer. The digest is
* updated using the <code>input.remaining()</code> bytes starting
* at <code>input.position()</code>.
* Upon return, the buffer's position will be equal to its limit;
* its limit will not have changed.
*
* @param input the ByteBuffer
* @since 1.5
*/
protected void engineUpdate(ByteBuffer input) {
if (input.hasRemaining() == false) {
return;
}
if (input.hasArray()) {
byte[] b = input.array();
int ofs = input.arrayOffset();
int pos = input.position();
int lim = input.limit();
engineUpdate(b, ofs + pos, lim - pos);
input.position(lim);
} else {
int len = input.remaining();
int n = JCAUtil.getTempArraySize(len);
if ((tempArray == null) || (n > tempArray.length)) {
tempArray = new byte[n];
}
while (len > 0) {
int chunk = Math.min(len, tempArray.length);
input.get(tempArray, 0, chunk);
engineUpdate(tempArray, 0, chunk);
len -= chunk;
}
}
}
示例5: engineUpdate
import sun.security.jca.JCAUtil; //导入依赖的package包/类
/**
* Update the digest using the specified ByteBuffer. The digest is
* updated using the <code>input.remaining()</code> bytes starting
* at <code>input.position()</code>.
* Upon return, the buffer's position will be equal to its limit;
* its limit will not have changed.
*
* @param input the ByteBuffer
* @since 1.5
*/
protected void engineUpdate(ByteBuffer input) {
if (input.hasRemaining() == false) {
return;
}
if (input.hasArray()) {
byte[] b = input.array();
int ofs = input.arrayOffset();
int pos = input.position();
int lim = input.limit();
engineUpdate(b, ofs + pos, lim - pos);
input.position(lim);
} else {
int len = input.remaining();
int n = JCAUtil.getTempArraySize(len);
if ((tempArray == null) || (n > tempArray.length)) {
tempArray = new byte[n];
}
while (len > 0) {
int chunk = Math.min(len, tempArray.length);
input.get(tempArray, 0, chunk);
engineUpdate(tempArray, 0, chunk);
len -= chunk;
}
}
}
示例6: engineSign
import sun.security.jca.JCAUtil; //导入依赖的package包/类
@Override
protected byte[] engineSign() throws SignatureException {
byte[] s = privateKey.getS().toByteArray();
ECParameterSpec params = privateKey.getParams();
byte[] encodedParams = ECParameters.encodeParameters(params); // DER OID
int keySize = params.getCurve().getField().getFieldSize();
// seed is twice the key size (in bytes) plus 1
byte[] seed = new byte[(((keySize + 7) >> 3) + 1) * 2];
if (random == null) {
random = JCAUtil.getSecureRandom();
}
random.nextBytes(seed);
try {
return encodeSignature(
signDigest(getDigestValue(), s, encodedParams, seed));
} catch (GeneralSecurityException e) {
throw new SignatureException("Could not sign data", e);
}
}
示例7: generateKeyPair
import sun.security.jca.JCAUtil; //导入依赖的package包/类
/**
* Generates a pair of keys usable by any JavaSecurity compliant
* DSA implementation.
*/
public KeyPair generateKeyPair() {
if (random == null) {
random = JCAUtil.getSecureRandom();
}
DSAParameterSpec spec;
try {
if (forceNewParameters) {
// generate new parameters each time
spec = ParameterCache.getNewDSAParameterSpec(modlen, random);
} else {
if (params == null) {
params =
ParameterCache.getDSAParameterSpec(modlen, random);
}
spec = params;
}
} catch (GeneralSecurityException e) {
throw new ProviderException(e);
}
return generateKeyPair(spec.getP(), spec.getQ(), spec.getG(), random);
}
示例8: padV15
import sun.security.jca.JCAUtil; //导入依赖的package包/类
/**
* PKCS#1 v1.5 padding (blocktype 1 and 2).
*/
private byte[] padV15(byte[] data) throws BadPaddingException {
byte[] padded = new byte[paddedSize];
System.arraycopy(data, 0, padded, paddedSize - data.length,
data.length);
int psSize = paddedSize - 3 - data.length;
int k = 0;
padded[k++] = 0;
padded[k++] = (byte)type;
if (type == PAD_BLOCKTYPE_1) {
// blocktype 1: all padding bytes are 0xff
while (psSize-- > 0) {
padded[k++] = (byte)0xff;
}
} else {
// blocktype 2: padding bytes are random non-zero bytes
if (random == null) {
random = JCAUtil.getSecureRandom();
}
// generate non-zero padding bytes
// use a buffer to reduce calls to SecureRandom
byte[] r = new byte[64];
int i = -1;
while (psSize-- > 0) {
int b;
do {
if (i < 0) {
random.nextBytes(r);
i = r.length - 1;
}
b = r[i--] & 0xff;
} while (b == 0);
padded[k++] = (byte)b;
}
}
return padded;
}
示例9: generateKeyPair
import sun.security.jca.JCAUtil; //导入依赖的package包/类
@Override
public KeyPair generateKeyPair() {
byte[] encodedParams =
ECUtil.encodeECParameterSpec(null, (ECParameterSpec)params);
// seed is twice the key size (in bytes) plus 1
byte[] seed = new byte[(((keySize + 7) >> 3) + 1) * 2];
if (random == null) {
random = JCAUtil.getSecureRandom();
}
random.nextBytes(seed);
try {
Object[] keyBytes = generateECKeyPair(keySize, encodedParams, seed);
// The 'params' object supplied above is equivalent to the native
// one so there is no need to fetch it.
// keyBytes[0] is the encoding of the native private key
BigInteger s = new BigInteger(1, (byte[])keyBytes[0]);
PrivateKey privateKey =
new ECPrivateKeyImpl(s, (ECParameterSpec)params);
// keyBytes[1] is the encoding of the native public key
ECPoint w = ECUtil.decodePoint((byte[])keyBytes[1],
((ECParameterSpec)params).getCurve());
PublicKey publicKey =
new ECPublicKeyImpl(w, (ECParameterSpec)params);
return new KeyPair(publicKey, privateKey);
} catch (Exception e) {
throw new ProviderException(e);
}
}