pbkdf2 java
时间: 2023-11-10 16:00:02 浏览: 55
PBKDF2是一个在密码学中使用的密钥派生函数,它基于哈希函数和一个盐值对密码进行多次迭代的计算。在Java中,可以使用javax.crypto.SecretKeyFactory类的PBKDF2WithHmacSHA1算法来实现PBKDF2函数。下面是一个实现PBKDF2函数的示例代码:
```java
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import java.security.spec.KeySpec;
import java.util.Base64;
public class PBKDF2Example {
public static String pbkdf2(String password, String salt) throws Exception {
int iterations = 1000; // 迭代次数
int keyLength = 256; // 密钥长度
char[] passwordChars = password.toCharArray();
byte[] saltBytes = salt.getBytes();
KeySpec spec = new PBEKeySpec(passwordChars, saltBytes, iterations, keyLength);
SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
byte[] hashedPassword = factory.generateSecret(spec).getEncoded();
return Base64.getEncoder().encodeToString(hashedPassword);
}
public static void main(String[] args) throws Exception {
String password = "password";
String salt = "somesalt";
String hashedPassword = pbkdf2(password, salt);
System.out.println("PBKDF2 hashed password: " + hashedPassword);
}
}
```
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