Java 中的 KeyPairGenerator getProvider()方法，带示例
原文:https://www . geeksforgeeks . org/keypairgenerator-get provider-method-in-Java-with-examples/
Java . security . Keypairgenerator类的 getProvider() 方法用于返回这个密钥对生成器对象的提供者。
语法:
public final Provider getProvider()
返回值:这个方法返回这个密钥对生成器对象的提供者。
以下是说明 getProvider() 方法的示例:
例 1:
// Java program to demonstrate
// getProvider() method
import java.security.*;
import java.util.*;
public class GFG1 {
public static void main(String[] argv)
{
try {
// creating the object of KeyPairGenerator
KeyPairGenerator sr = KeyPairGenerator
.getInstance("RSA");
// getting the Provider of the KeyPairGenerator sr
// by using method getProvider()
Provider provider = sr.getProvider();
// printing the provider name
System.out.println("Provider name : "
+ provider.getName());
}
catch (NoSuchAlgorithmException e) {
System.out.println("Exception thrown : " + e);
}
}
}
Output:
Provider name : SunRsaSign
例 2:
// Java program to demonstrate
// getProvider() method
import java.security.*;
import java.util.*;
public class GFG1 {
public static void main(String[] argv)
{
try {
// creating the object of KeyPairGenerator
KeyPairGenerator sr = KeyPairGenerator
.getInstance("DiffieHellman");
// getting the Provider of the KeyPairGenerator sr
// by using method getProvider()
Provider provider = sr.getProvider();
// printing the provider name
System.out.println("Provider name : "
+ provider.getName());
}
catch (NoSuchAlgorithmException e) {
System.out.println("Exception thrown : " + e);
}
}
}
Output:
Provider name : SunJCE
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