Java Articles - Page 484 of 745

A specific key can be used to search for the required property in the property list using the method getProperty() in the class java.security.Provider. This method requires a single parameter i.e. the key required to search for the property. It returns the property value for the key or returns null if the property value is not available.A program that demonstrates this is given as follows −Example Live Demoimport java.security.*; import java.util.*; public class Demo {    public static void main(String[] argv) throws Exception {       try {          KeyPairGenerator kpGenerator = KeyPairGenerator.getInstance("DSA");         ... Read More

The name and the version number of the provider in string form can be obtained using the method toString() in the class java.security.Provider. This method requires no parameters and it returns the name as well as the version number of the provider in string form.A program that demonstrates this is given as follows −Example Live Demoimport java.security.*; import java.util.*; public class Demo {    public static void main(String[] argv) {       try {          KeyPairGenerator kpGenerator = KeyPairGenerator.getInstance("DSA");          Provider p = kpGenerator.getProvider();          System.out.println("The name and version number of ... Read More

The version number of the provider can be obtained using the method getVersion() in the class java.security.Provider. This method requires no parameter and it returns the version number of the provider as required.A program that demonstrates this is given as follows −Example Live Demoimport java.security.*; import java.util.*; public class Demo {    public static void main(String[] argv) {       try {          KeyPairGenerator kpGenerator = KeyPairGenerator.getInstance("DSA");          Provider p = kpGenerator.getProvider();          System.out.println("The version number is: " + p.getVersion()); } catch (NoSuchAlgorithmException e) { ... Read More

The name of the provider can be obtained using the getName() method in the class java.security.Provider. This method requires no parameter and it returns the name of the provider as required.A program that demonstrates this is given as follows −Example Live Demoimport java.security.*; import java.util.*; public class Demo {    public static void main(String[] argv) {       try {          KeyPairGenerator kpGenerator = KeyPairGenerator.getInstance("DSA");          Provider p = kpGenerator.getProvider();          System.out.println("The Provider is: " + p.getName());       } catch (NoSuchAlgorithmException e) { ... Read More

An easily readable description of the provider and its services can be obtained using the method getInfo() in the class java.security.Provider. This method requires no parameters and it returns a provider and services description.A program that demonstrates this is given as follows −Example Live Demoimport java.security.*; import java.util.*; public class Demo {    public static void main(String[] argv) throws Exception {       try {          SecureRandom sRandom = SecureRandom.getInstance("SHA1PRNG");          Provider p = sRandom.getProvider();          System.out.println("The information is as follows:");          System.out.println(p.getInfo());       } catch ... Read More

The value to which a key is mapped can be obtained using the get() method in the class java.security.Provider. This method requires a single parameter i.e. the key whose value is required. It returns the value to which the key is mapped or it returns null if there is no value to which the key is mapped.A program that demonstrates this is given as follows −Example Live Demoimport java.security.*; import java.util.*; public class Demo {    public static void main(String[] argv) {       try {          SecureRandom sRandom = SecureRandom.getInstance("SHA1PRNG");          Provider p ... Read More

The entries in the Provider have an unmodifiable set view that can be obtained using the method entrySet() in the class java.security.Provider. This method requires no parameters and it returns the unmodifiable set view for the entries in the Provider.A program that demonstrates this is given as follows −Example Live Demoimport java.security.*; import java.util.*; public class Demo {    public static void main(String[] argv) {       try {          SecureRandom sRandom = SecureRandom.getInstance("SHA1PRNG");          Provider p = sRandom.getProvider();          Set set = p.entrySet();          Iterator i = ... Read More

An enumeration of the values in the hash table can be obtained using the method elements() in the class java.security.Provider. This method requires no parameters and it returns the enumeration of the values in the hash table.A program that demonstrates this is given as follows −Example Live Demoimport java.security.*; import java.util.*; public class Demo {    public static void main(String[] argv) {       try {          SecureRandom sRandom = SecureRandom.getInstance("SHA1PRNG");          Provider p = sRandom.getProvider();          Enumeration enumeration;          enumeration = p.elements();          System.out.println("The ... Read More

The parameters can be generated using the method generateParameters() in the class java.security.AlgorithmParameterGenerator. This method requires no parameters and it returns the AlgorithmParameter object.A program that demonstrates this is given as follows −Example Live Demoimport java.security.*; import java.util.*; public class Demo {    public static void main(String[] argv) {       try {          AlgorithmParameterGenerator apGenerator = AlgorithmParameterGenerator.getInstance("DiffieHellman");          apGenerator.init(1024);          AlgorithmParameters aParameters = apGenerator.generateParameters();          System.out.println(aParameters);       } catch (NoSuchAlgorithmException e) {          System.out.println("Error!!! NoSuchAlgorithmException");       } catch (ProviderException e) ... Read More

The algorithm name for the parameter generator can be obtained using the method getAlgorithm() in the class java.security.AlgorithmParameterGenerator. This method requires no parameters and it returns the algorithm name in string form.A program that demonstrates this is given as follows −Example Live Demoimport java.security.*; import java.util.*; public class Demo {    public static void main(String[] argv) {       try {          AlgorithmParameterGenerator apGenerator = AlgorithmParameterGenerator.getInstance("DiffieHellman");          apGenerator.init(1024);          String algorithm = apGenerator.getAlgorithm();          System.out.println("The Algorithm is: " + algorithm);       } catch (NoSuchAlgorithmException e) { ... Read More