Question

我有一些PHP代码可以加密发送到Web服务的消息。现在，我想创建等效的Java代码，但会卡住。请帮助

-PHP代码看起来像

$length = 60;
$salt =  "MySalt";
$interation = 3000;
$bytes = openssl_pbkdf2("mypasspharse", $salt, $length, $interation, "sha1");

$value1 = substr($bytes, 0, 10);
$value2 = substr($bytes, 10, 20);
$value3 = substr($bytes, 30, 30);

return array('value1' => $value1, 'value2' => $value2, 'value3' => $value3);

-

我正在尝试使用SecretKeyFactory在Java中执行相同的操作。我的Java代码如下：

SecretKeyFactory factory = SecretKeyFactory
                .getInstance("PBKDF2WithHmacSHA1");
        PBEKeySpec spec = new PBEKeySpec(passphrase.toCharArray(),
                salt.getBytes("UTF-8"), interation, length);

现在我不知道如何获得等效的$ value1，$ value2，$ value3作为php代码。另外，我不确定我在用上面的php代码编写等效的Java代码的正确方法。任何想法都非常感谢。

谢谢

Answer 1

下面的两个示例产生相同的输出：

PHP：

$length = 60;
$salt =  "MySalt";
$interation = 10;
$bytes = openssl_pbkdf2("mypasspharse", $salt, $length, $interation, "sha1");

for ($i = 0; $i < 60; $i++)
{
    echo dechex(ord($bytes[$i]));
    echo '<br>';
}

Java：

int length = 60 * 8;
String passphrase = "mypasspharse";
String salt = "MySalt";
int iteration = 10;

SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
PBEKeySpec spec = new PBEKeySpec(passphrase.toCharArray(), salt.getBytes("UTF-8"), iteration, length);

byte[] bytes = factory.generateSecret(spec).getEncoded();
for (int i = 0; i < 60; i++) {
    System.out.println(Integer.toHexString(bytes[i] & 0xFF));
}

php openssl_pbkdf2在Java中等效

1 个答案: