PHP AES加密/解密

Z时代
2024-01-10
分类：问答

我找到了在PHP中对字符串进行编码/解码的示例。起初它看起来非常好，但是不会起作用:-(

有人知道问题出在哪里吗？

$Pass = "Passwort";
$Clear = "Klartext";
$crypted = fnEncrypt($Clear, $Pass);
echo "Encrypted: ".$crypted."</br>";
$newClear = fnDecrypt($crypted, $Pass);
echo "Decrypted: ".$newClear."</br>";
function fnEncrypt($sValue, $sSecretKey) {
    return trim(base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $sSecretKey, $sDecrypted, MCRYPT_MODE_ECB, mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB), MCRYPT_RAND))));
}
function fnDecrypt($sValue, $sSecretKey) {
    return trim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $sSecretKey, base64_decode($sEncrypted), MCRYPT_MODE_ECB, mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB), MCRYPT_RAND)));
}

结果是：

加密： boKRNTYYNp7AiOvY1CidqsAn9wX4ufz/D9XrpjAOPk8=

解密： —‚(ÑÁ ^ yË~F'¸®Ó–í œð2Á_B‰Â—

回答：

$sDecrypted并且$sEncrypted 在您的代码中未定义。查看有效的解决方案（）：

回答：

这个例子是不要使用它！

$Pass = "Passwort";
$Clear = "Klartext";
$crypted = fnEncrypt($Clear, $Pass);
echo "Encrypred: ".$crypted."</br>";
$newClear = fnDecrypt($crypted, $Pass);
echo "Decrypred: ".$newClear."</br>";
function fnEncrypt($sValue, $sSecretKey)
{
    return rtrim(
        base64_encode(
            mcrypt_encrypt(
                MCRYPT_RIJNDAEL_256,
                $sSecretKey, $sValue, 
                MCRYPT_MODE_ECB, 
                mcrypt_create_iv(
                    mcrypt_get_iv_size(
                        MCRYPT_RIJNDAEL_256, 
                        MCRYPT_MODE_ECB
                    ), 
                    MCRYPT_RAND)
                )
            ), "\0"
        );
}
function fnDecrypt($sValue, $sSecretKey)
{
    return rtrim(
        mcrypt_decrypt(
            MCRYPT_RIJNDAEL_256, 
            $sSecretKey, 
            base64_decode($sValue), 
            MCRYPT_MODE_ECB,
            mcrypt_create_iv(
                mcrypt_get_iv_size(
                    MCRYPT_RIJNDAEL_256,
                    MCRYPT_MODE_ECB
                ), 
                MCRYPT_RAND
            )
        ), "\0"
    );
}