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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6. import javax.crypto.KeyGenerator;
  7. import javax.crypto.SecretKey;
  8. import java.security.SecureRandom;
  9.  
  10. /* Name of the class has to be "Main" only if the class is public. */
  11. class Main {
  12. 	public static byte[] generateAesKey(int keySize, String seed) throws Exception {
  13.         KeyGenerator keyGen = KeyGenerator.getInstance("AES");
  14.         SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
  15.         random.setSeed(seed.getBytes());
  16.         keyGen.init(keySize, random);
  17.         SecretKey secretKey = keyGen.generateKey();
  18.         return secretKey.getEncoded();
  19.     }
  20.  
  21.     public static void main(String[] args) {
  22.         try {
  23.             // 生成密钥
  24.             byte[] keyBytes = generateAesKey(128, "01e99f45b70544f7add40af512bbdd10");
  25.  
  26.             // 打印字节数组
  27.             System.out.println("密钥字节数组:");
  28.             for (byte b : keyBytes) {
  29.                 System.out.print(b + ", ");
  30.             }
  31.  
  32.             // 打印十六进制格式
  33.             System.out.println("\n\n十六进制格式:");
  34.             for (byte b : keyBytes) {
  35.                 System.out.printf("%02X ", b & 0xFF);
  36.             }
  37.  
  38.         } catch (Exception e) {
  39.             e.printStackTrace();
  40.         }
  41.     }
  42. }
Success #stdin #stdout 0.3s 63304KB
comments (?)
stdin 
Standard input is empty
stdout 
密钥字节数组:
-87, 36, 57, 16, 23, 13, 24, -96, 109, 126, 127, -115, -67, -122, -28, -96, 

十六进制格式:
A9 24 39 10 17 0D 18 A0 6D 7E 7F 8D BD 86 E4 A0
https://ideone.com/OUoT9U
language:
Java (HotSpot 12)
created:
6 days ago
visibility:
public

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