java securerandom如何使用

Java SecureRandom ? Java ????????????????,?? java.util.Random ???,??????????????????SecureRandom ??????????????,???????????(IV)??

?????? Java ??? SecureRandom ???:

1. ??????:

import java.security.SecureRandom;

2. ???? SecureRandom ??:

SecureRandom secureRandom = new SecureRandom();

3. ?? SecureRandom ??????:

int randomInt = secureRandom.nextInt();
System.out.println("Random integer: " + randomInt);

4. ?? SecureRandom ????????????:

int min = 1;
int max = 100;
int randomIntInRange = secureRandom.nextInt(max - min + 1) + min;
System.out.println("Random integer between " + min + " and " + max + ": " + randomIntInRange);

5. ?? SecureRandom ?????????????:

int length = 16;
byte[] randomBytes = new byte[length];
secureRandom.nextBytes(randomBytes);
System.out.println("Random bytes: " + Arrays.toString(randomBytes));

6. ?? SecureRandom ????????????????:

int length = 32;
StringBuilder randomHexString = new StringBuilder();
for (int i = 0; i < length; i++) {
    randomHexString.append(String.format("x", secureRandom.nextInt(256)));
}
System.out.println("Random hex string: " + randomHexString.toString());

?????????? Java ??? SecureRandom ??????????????,SecureRandom ??????? java.util.Random,????????????????????????????,?????? java.util.Random?