本文整理汇总了Java中java.security.Provider.Service.getProvider方法的典型用法代码示例。如果您正苦于以下问题：Java Service.getProvider方法的具体用法？Java Service.getProvider怎么用？Java Service.getProvider使用的例子？那么, 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java.security.Provider.Service的用法示例。
在下文中一共展示了Service.getProvider方法的3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: chooseProvider
import java.security.Provider.Service; //导入方法依赖的package包/类
private void chooseProvider(int type, Key key, SecureRandom random)
throws InvalidKeyException {
synchronized (lock) {
if (sigSpi != null) {
init(sigSpi, type, key, random);
return;
}
Exception lastException = null;
while ((firstService != null) || serviceIterator.hasNext()) {
Service s;
if (firstService != null) {
s = firstService;
firstService = null;
} else {
s = serviceIterator.next();
}
// if provider says it does not support this key, ignore it
if (s.supportsParameter(key) == false) {
continue;
}
// if instance is not a SignatureSpi, ignore it
if (isSpi(s) == false) {
continue;
}
try {
SignatureSpi spi = newInstance(s);
init(spi, type, key, random);
provider = s.getProvider();
sigSpi = spi;
firstService = null;
serviceIterator = null;
return;
} catch (Exception e) {
// NoSuchAlgorithmException from newInstance()
// InvalidKeyException from init()
// RuntimeException (ProviderException) from init()
if (lastException == null) {
lastException = e;
}
}
}
// no working provider found, fail
if (lastException instanceof InvalidKeyException) {
throw (InvalidKeyException)lastException;
}
if (lastException instanceof RuntimeException) {
throw (RuntimeException)lastException;
}
String k = (key != null) ? key.getClass().getName() : "(null)";
throw new InvalidKeyException
("No installed provider supports this key: "
+ k, lastException);
}
}
示例2: getInstance
import java.security.Provider.Service; //导入方法依赖的package包/类
public static Instance getInstance(Service s, Class<?> clazz)
throws NoSuchAlgorithmException {
Object instance = s.newInstance(null);
checkSuperClass(s, instance.getClass(), clazz);
return new Instance(s.getProvider(), instance);
}
示例3: chooseProvider
import java.security.Provider.Service; //导入方法依赖的package包/类
private void chooseProvider(int initType, int opmode, Key key,
AlgorithmParameterSpec paramSpec,
AlgorithmParameters params, SecureRandom random)
throws InvalidKeyException, InvalidAlgorithmParameterException {
synchronized (lock) {
if (spi != null) {
implInit(spi, initType, opmode, key, paramSpec, params, random);
return;
}
Exception lastException = null;
while ((firstService != null) || serviceIterator.hasNext()) {
Service s;
CipherSpi thisSpi;
if (firstService != null) {
s = firstService;
thisSpi = firstSpi;
firstService = null;
firstSpi = null;
} else {
s = serviceIterator.next();
thisSpi = null;
}
// if provider says it does not support this key, ignore it
if (s.supportsParameter(key) == false) {
continue;
}
if (JceSecurity.canUseProvider(s.getProvider()) == false) {
continue;
}
Transform tr = getTransform(s, transforms);
if (tr == null) {
// should never happen
continue;
}
if (tr.supportsModePadding(s) == S_NO) {
continue;
}
try {
if (thisSpi == null) {
thisSpi = (CipherSpi)s.newInstance(null);
}
tr.setModePadding(thisSpi);
initCryptoPermission();
implInit(thisSpi, initType, opmode, key, paramSpec,
params, random);
provider = s.getProvider();
this.spi = thisSpi;
firstService = null;
serviceIterator = null;
transforms = null;
return;
} catch (Exception e) {
// NoSuchAlgorithmException from newInstance()
// InvalidKeyException from init()
// RuntimeException (ProviderException) from init()
// SecurityException from crypto permission check
if (lastException == null) {
lastException = e;
}
}
}
// no working provider found, fail
if (lastException instanceof InvalidKeyException) {
throw (InvalidKeyException)lastException;
}
if (lastException instanceof InvalidAlgorithmParameterException) {
throw (InvalidAlgorithmParameterException)lastException;
}
if (lastException instanceof RuntimeException) {
throw (RuntimeException)lastException;
}
String kName = (key != null) ? key.getClass().getName() : "(null)";
throw new InvalidKeyException
("No installed provider supports this key: "
+ kName, lastException);
}
}