Provider keys() method in Java with Examples
The keys() method of java.security.Provider class is used to return an enumeration of the keys in this hashtable.
Syntax:
public Enumeration keys()
Return Value: This method returns an enumeration of the keys in this hashtable.
Below are the examples to illustrate the keys() method:
Program 1:
Java
import java.security.*;
import java.util.*;
public class GFG1 {
public static void main(String[] argv)
{
int i = 10 ;
try {
SecureRandom sr = SecureRandom.getInstance( "NativePRNGBlocking" );
Provider provider = sr.getProvider();
Enumeration<Object> enume;
enume = provider.keys();
System.out.println( "enumeration of the values: \n" );
while (i > 0 ) {
System.out.println( "Value is: " + enume.nextElement());
i--;
}
}
catch (NoSuchAlgorithmException e) {
System.out.println( "Exception thrown : " + e);
}
}
}
|
Output:
enumeration of the values:
Value is: Alg.Alias.Signature.SHA1/DSA
Value is: Alg.Alias.Signature.1.2.840.10040.4.3
Value is: Alg.Alias.Signature.DSS
Value is: SecureRandom.SHA1PRNG ImplementedIn
Value is: KeyStore.JKS
Value is: Alg.Alias.MessageDigest.SHA-1
Value is: MessageDigest.SHA
Value is: KeyStore.CaseExactJKS
Value is: CertStore.com.sun.security.IndexedCollection ImplementedIn
Value is: Signature.SHA256withDSA
Example 2:
Java
import java.security.*;
import java.util.*;
public class GFG1 {
public static void main(String[] argv)
{
int i = 10 ;
try {
Signature sr = Signature.getInstance( "SHA1withDSA" );
Provider provider = sr.getProvider();
Enumeration<Object> enume;
enume = provider.keys();
System.out.println( "enumeration of the values: \n" );
while (i > 0 ) {
System.out.println( "Value is: " + enume.nextElement());
i--;
}
}
catch (NoSuchAlgorithmException e) {
System.out.println( "Exception thrown : " + e);
}
}
}
|
Output:
enumeration of the values:
Value is: Alg.Alias.Signature.SHA1/DSA
Value is: Alg.Alias.Signature.1.2.840.10040.4.3
Value is: Alg.Alias.Signature.DSS
Value is: SecureRandom.SHA1PRNG ImplementedIn
Value is: KeyStore.JKS
Value is: Alg.Alias.MessageDigest.SHA-1
Value is: MessageDigest.SHA
Value is: KeyStore.CaseExactJKS
Value is: CertStore.com.sun.security.IndexedCollection ImplementedIn
Value is: Signature.SHA256withDSA
Last Updated :
30 Jan, 2023
Like Article
Save Article
Share your thoughts in the comments
Please Login to comment...