本文整理汇总了Java中java.security.spec.DSAGenParameterSpec.getSubprimeQLength方法的典型用法代码示例。如果您正苦于以下问题:Java DSAGenParameterSpec.getSubprimeQLength方法的具体用法?Java DSAGenParameterSpec.getSubprimeQLength怎么用?Java DSAGenParameterSpec.getSubprimeQLength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java.security.spec.DSAGenParameterSpec
的用法示例。
在下文中一共展示了DSAGenParameterSpec.getSubprimeQLength方法的7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: engineInit
import java.security.spec.DSAGenParameterSpec; //导入方法依赖的package包/类
/**
* Initializes this parameter generator with a set of
* algorithm-specific parameter generation values.
*
* @param genParamSpec the set of algorithm-specific parameter generation values
* @param random the source of randomness
*
* @exception InvalidAlgorithmParameterException if the given parameter
* generation values are inappropriate for this parameter generator
*/
protected void engineInit(AlgorithmParameterSpec genParamSpec,
SecureRandom random)
throws InvalidAlgorithmParameterException {
if (!(genParamSpec instanceof DSAGenParameterSpec)) {
throw new InvalidAlgorithmParameterException("Invalid parameter");
}
DSAGenParameterSpec dsaGenParams = (DSAGenParameterSpec) genParamSpec;
int primePLen = dsaGenParams.getPrimePLength();
if (primePLen > 2048) {
throw new InvalidParameterException
("No support for prime size " + primePLen);
}
// directly initialize using the already validated values
this.valueL = primePLen;
this.valueN = dsaGenParams.getSubprimeQLength();
this.seedLen = dsaGenParams.getSeedLength();
this.random = random;
}
示例2: engineInit
import java.security.spec.DSAGenParameterSpec; //导入方法依赖的package包/类
/**
* Initializes this parameter generator with a set of
* algorithm-specific parameter generation values.
*
* @param genParamSpec the set of algorithm-specific parameter
* generation values
* @param random the source of randomness
*
* @exception InvalidAlgorithmParameterException if the given parameter
* generation values are inappropriate for this parameter generator
*/
@Override
protected void engineInit(AlgorithmParameterSpec genParamSpec,
SecureRandom random) throws InvalidAlgorithmParameterException {
if (!(genParamSpec instanceof DSAGenParameterSpec)) {
throw new InvalidAlgorithmParameterException("Invalid parameter");
}
DSAGenParameterSpec dsaGenParams = (DSAGenParameterSpec)genParamSpec;
// directly initialize using the already validated values
this.valueL = dsaGenParams.getPrimePLength();
this.valueN = dsaGenParams.getSubprimeQLength();
this.seedLen = dsaGenParams.getSeedLength();
this.random = random;
}
示例3: checkParamStrength
import java.security.spec.DSAGenParameterSpec; //导入方法依赖的package包/类
private static void checkParamStrength(AlgorithmParameters param,
DSAGenParameterSpec genParam)
throws Exception {
String algo = param.getAlgorithm();
if (!algo.equalsIgnoreCase("DSA")) {
throw new RuntimeException("Unexpected type of parameters: " + algo);
}
DSAParameterSpec spec = param.getParameterSpec(DSAParameterSpec.class);
int valueL = spec.getP().bitLength();
int strength = genParam.getPrimePLength();
if (strength != valueL) {
System.out.println("P: Expected " + strength + " but actual " + valueL);
throw new RuntimeException("Wrong P strength");
}
int valueN = spec.getQ().bitLength();
strength = genParam.getSubprimeQLength();
if (strength != valueN) {
System.out.println("Q: Expected " + strength + " but actual " + valueN);
throw new RuntimeException("Wrong Q strength");
}
}
示例4: engineInit
import java.security.spec.DSAGenParameterSpec; //导入方法依赖的package包/类
/**
* Initializes this parameter generator with a set of
* algorithm-specific parameter generation values.
*
* @param genParamSpec the set of algorithm-specific parameter
* generation values
* @param random the source of randomness
*
* @exception InvalidAlgorithmParameterException if the given parameter
* generation values are inappropriate for this parameter generator
*/
@Override
protected void engineInit(AlgorithmParameterSpec genParamSpec,
SecureRandom random) throws InvalidAlgorithmParameterException {
if (!(genParamSpec instanceof DSAGenParameterSpec)) {
throw new InvalidAlgorithmParameterException("Invalid parameter");
}
DSAGenParameterSpec dsaGenParams = (DSAGenParameterSpec)genParamSpec;
int primePLen = dsaGenParams.getPrimePLength();
if (primePLen > 2048) {
throw new InvalidParameterException
("No support for prime size " + primePLen);
}
// directly initialize using the already validated values
this.valueL = primePLen;
this.valueN = dsaGenParams.getSubprimeQLength();
this.seedLen = dsaGenParams.getSeedLength();
this.random = random;
}
示例5: checkParam
import java.security.spec.DSAGenParameterSpec; //导入方法依赖的package包/类
private static void checkParam(AlgorithmParameters param,
DSAGenParameterSpec genParam) throws InvalidParameterSpecException,
NoSuchAlgorithmException, NoSuchProviderException,
InvalidAlgorithmParameterException {
String algorithm = param.getAlgorithm();
if (!algorithm.equalsIgnoreCase(ALGORITHM_NAME)) {
throw new RuntimeException(
"Unexpected type of parameters: " + algorithm);
}
DSAParameterSpec spec = param.getParameterSpec(DSAParameterSpec.class);
int valueL = spec.getP().bitLength();
int strengthP = genParam.getPrimePLength();
if (strengthP != valueL) {
System.out.printf("P: Expected %d but actual %d%n", strengthP,
valueL);
throw new RuntimeException("Wrong P strength");
}
int valueN = spec.getQ().bitLength();
int strengthQ = genParam.getSubprimeQLength();
if (strengthQ != valueN) {
System.out.printf("Q: Expected %d but actual %d%n", strengthQ,
valueN);
throw new RuntimeException("Wrong Q strength");
}
if (genParam.getSubprimeQLength() != genParam.getSeedLength()) {
System.out.println("Defaut seed length should be the same as Q.");
throw new RuntimeException("Wrong seed length");
}
// use the parameters to generate real DSA keys
KeyPairGenerator keyGen = KeyPairGenerator.getInstance(ALGORITHM_NAME,
PROVIDER_NAME);
keyGen.initialize(spec);
keyGen.generateKeyPair();
}
示例6: checkParam
import java.security.spec.DSAGenParameterSpec; //导入方法依赖的package包/类
private static void checkParam(AlgorithmParameters param,
DSAGenParameterSpec genParam) throws InvalidParameterSpecException,
NoSuchAlgorithmException, NoSuchProviderException,
InvalidAlgorithmParameterException {
String algorithm = param.getAlgorithm();
if (!algorithm.equalsIgnoreCase(ALGORITHM_NAME)) {
throw new RuntimeException(
"Unexpected type of parameters: " + algorithm);
}
DSAParameterSpec spec = param.getParameterSpec(DSAParameterSpec.class);
int valueL = spec.getP().bitLength();
int strengthP = genParam.getPrimePLength();
if (strengthP != valueL) {
System.out.printf("P: Expected %d but actual %d%n", strengthP,
valueL);
throw new RuntimeException("Wrong P strength");
}
int valueN = spec.getQ().bitLength();
int strengthQ = genParam.getSubprimeQLength();
if (strengthQ != valueN) {
System.out.printf("Q: Expected %d but actual %d%n", strengthQ,
valueN);
throw new RuntimeException("Wrong Q strength");
}
if (genParam.getSubprimeQLength() != genParam.getSeedLength()) {
System.out.println("Defaut seed length should be the same as Q.");
throw new RuntimeException("Wrong seed length");
}
KeyPairGenerator keyGen = KeyPairGenerator.getInstance(ALGORITHM_NAME,
PROVIDER_NAME);
keyGen.initialize(spec);
}
示例7: checkParam
import java.security.spec.DSAGenParameterSpec; //导入方法依赖的package包/类
private static void checkParam(AlgorithmParameters param,
DSAGenParameterSpec genParam) throws InvalidParameterSpecException,
NoSuchAlgorithmException, NoSuchProviderException,
InvalidAlgorithmParameterException {
String algorithm = param.getAlgorithm();
if (!algorithm.equalsIgnoreCase(ALGORITHM_NAME)) {
throw new RuntimeException(
"Unexpected type of parameters: " + algorithm);
}
DSAParameterSpec spec = param.getParameterSpec(DSAParameterSpec.class);
int valueL = spec.getP().bitLength();
int strengthP = genParam.getPrimePLength();
if (strengthP != valueL) {
System.out.printf("P: Expected %d but actual %d%n", strengthP,
valueL);
throw new RuntimeException("Wrong P strength");
}
int valueN = spec.getQ().bitLength();
int strengthQ = genParam.getSubprimeQLength();
if (strengthQ != valueN) {
System.out.printf("Q: Expected %d but actual %d%n", strengthQ,
valueN);
throw new RuntimeException("Wrong Q strength");
}
if (genParam.getSubprimeQLength() != genParam.getSeedLength()) {
System.out.println("Defaut seed length should be the same as Q.");
throw new RuntimeException("Wrong seed length");
}
KeyPairGenerator keyGen = KeyPairGenerator.getInstance(ALGORITHM_NAME,
PROVIDER_NAME);
keyGen.initialize(spec);
}