我尝试encrypt和decrypt mcrypt。
加密工作正常，正如您在我的代码中看到的那样，我已经获得了加密数据。
然而，当我尝试解密时，我收到以下错误：
<br />
<b>Fatal error</b>: Cannot use object of type stdClass as array in <b>C:\xampp\htdocs\MIAManagerNEWChris - Copy\php\getLogin.php</b> on line <b>63</b><br />
有人知道这是为什么吗？
PHP
error_reporting(E_ALL);
ini_set('display_errors', 1);
// Start the session
session_start();
// Store command in new variable
$command = $_POST["command"];
// Create a return object to be sent back to client side
$returnObject = new stdClass();
// Hash key for encrypting selected data
$hashKey = "47sKdUBPqRox7wZtNT48L5hJzQKubqrQ";
function encryptString($string, $mc_key)
{
$passcrypt = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $mc_key, trim($string), MCRYPT_MODE_ECB);
$encode = base64_encode($passcrypt);
return $encode;
}
function decryptString($string, $mc_key)
{
$decoded = base64_decode($string);
$decrypted = rtrim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $mc_key, $decoded, MCRYPT_MODE_ECB));
return $decrypted;
}
// Check to see if the command matches and see if an object exists in post
if ($command == "checkUserCredentials")
{
// Store object from post in new variable
$receivedObject = json_decode($_POST['userCreds'],true);
// Check to see if there is a configuration file that exists with users name
if (!file_exists('C:/xampp/htdocs/ISOSEC/data/users/'. $receivedObject["username"] .'.cfg'))
{
// Return back there is no configuration file
$returnObject->returnMessage = "The configuration for user '" . $receivedObject["username"] . "' not found";
$returnObject->userExist = "noConfigFile";
}
else
{
// Return back there is a configuration file
$returnObject->returnMessage = "The configuration for user '" . $receivedObject["username"] . "' exists";
$returnObject->userConfigurationFile = "isConfigFile";
// Check if there is a user name and password been typed
if (isset($receivedObject["username"]) && isset($receivedObject["password"]))
{
// Get information from file
$userLoginCred = file_get_contents('C:/xampp/htdocs/ISOSEC/data/users/'. $receivedObject["username"] .'.cfg');
$decrypted = decryptString($userLoginCred, $hashKey);
$userLoginCredDecoded = json_decode($decrypted);
// Check if there is a user name and password in configuration file
if (isset($userLoginCredDecoded["userUsername"]) && isset($userLoginCredDecoded["userPassword"]))
{
// Check if user name and password is the same as the configuration user name and password
if ($receivedObject["username"] == $userLoginCredDecoded["userUsername"] && $receivedObject["password"] == $userLoginCredDecoded["userPassword"])
{
// Return back an information message
$returnObject->validUser = "isValid";
// Set session variables
$_SESSION["userLoggedIn"] = $userLoginCredDecoded["userUsername"];
}
else
{
// Return back error message
$returnObject->notValidUser = "notValid";
}
}
}
}
}
if ($command == "createNewAccount")
{
// Store object from post in new variable
$receivedObject = json_decode($_POST['setLoginCreds'], true);
// Check to see if there is a configuration file that exists with users name
if (!file_exists('C:/xampp/htdocs/ISOSEC/data/users/'. $receivedObject["userUsername"] .'.cfg'))
{
if (strlen($receivedObject["userUsername"]) <= 6 || strlen($receivedObject["userUsername"]) == 0)
{
// Return back message about user name length
$returnObject->inputUsernameLengthValidation = "usernameLength";
}
if (strlen($receivedObject["userPassword"]) <= 6 || strlen($receivedObject["userPassword"]) == 0)
{
// Return back message about password length
$returnObject->inputPasswordLengthValidation = "passwordLength";
}
if (strlen($receivedObject["userUsername"]) > 6 && strlen($receivedObject["userPassword"]) > 6)
{
// Return back there is no configuration file
$newConfigurationFile = fopen('C:/xampp/htdocs/ISOSEC/data/users/'. $receivedObject["userUsername"] .'.cfg', "w") or die("Can't create file");
//$returnObject->returnMessage = $newConfigurationFile;
// Check if the new configuration file created
if ($newConfigurationFile)
{
$encrypted = encryptString(json_encode($receivedObject), $hashKey);
if (fwrite($newConfigurationFile, $encrypted))
{
// Return back message about user configuration created
$returnObject->configurationCreated = "configCreated";
}
else
{
// Return back message about user configuration not created
$returnObject->configurationCreated = "configNotCreated";
}
fclose($newConfigurationFile);
}
// Return back message saying user account has been created
$returnObject->returnMessage = "newUserAccountCreated";
}
}
else
{
$returnObject->returnMessage = "configurationAlreadyExist";
}
}
echo json_encode($returnObject);
的Javascript
function CheckManagerLoginCredentials(user)
{
$.post("php/getLogin.php",
{
command: "checkUserCredentials",
userCreds: JSON.stringify(user)
})
.success(function (callback)
{
console.log(callback);
var jsonMessage = JSON.parse(callback);
if (jsonMessage["validUser"] == "isValid")
{
// Redirect page to server page
window.location.href = "index.html";
}
else
{
// Show error message if the credentials are incorrect
swal('', "Incorrect credentials entered, please try again", 'error');
}
})
.fail(function (error)
{
// Show error dialog if post request failed
swal('', error, 'error');
});
}
function CreateNewUserAccount()
{
swal(
{
title: '',
html: '<br><br><p><label for="setUsernameField">Enter Username: </label> <input id="setUsernameField" placeholder="Username"></p><br><p><label for="setPasswordField">Enter Password: </label> <input id="setPasswordField" type="password" placeholder="Password"></p><p class="createAccountErrorMessage"></p>',
showCancelButton: true,
closeOnConfirm: false
},
function ()
{
var userCredentials = {};
userCredentials.userUsername = $("#setUsernameField").val();
userCredentials.userPassword = $("#setPasswordField").val();
$.post("php/getLogin.php",
{
command: "createNewAccount",
setLoginCreds: JSON.stringify(userCredentials)
})
.success(function (callback)
{
var jsonMessage = JSON.parse(callback);
$(".createAccountErrorMessage").html("");
if (jsonMessage["inputUsernameLengthValidation"])
{
// Show error message if username not longer enough
$(".createAccountErrorMessage").css("display","block").append("<li>Username MUST be longer than 6 characters</li>");
}
if (jsonMessage["inputPasswordLengthValidation"])
{
// Show error message if password not longer enough
$(".createAccountErrorMessage").css("display","block").append("<li>Password MUST be longer than 6 characters</li>");
}
if (jsonMessage["returnMessage"] == "configurationAlreadyExist")
{
// Show error message if username already exist
$(".createAccountErrorMessage").css("display","block").append("<li>This username already exists, please try again!</li>");
}
if (jsonMessage["returnMessage"] == "newUserAccountCreated")
{
// Show success message
$(".createAccountErrorMessage").css("display","block").css("color","green").append("Account has successfully been created.");
// Remove create account panel
setTimeout(function()
{
$(".sweet-overlay").css("display", "none");
$(".sweet-alert").css("display", "none");
}, 2000);
}
})
.fail(function (error)
{
// Show error dialogue if post request failed
swal('', error, 'error');
});
});
}
答案 0 :(得分：2)
不能使用stdClass类型的对象作为数组 C：\ xampp \ htdocs \ MIAManagerNEWChris - 第63行复制\ php \ getLogin.php
此处的错误表明出了什么问题。您的所有加密/解密代码都正常运行，但您只是滥用json_decode()的输出。在json_decode()之后的后续代码中，您正在访问数组元素，但原始代码实际上返回的对象stdClass如下所示：
class stdClass#1 (2) {
public $userUsername =>
string(9) "testing55"
public $userPassword =>
string(7) "1234567"
}
所以你只需要切换到对象属性，如$userLoginCredDecoded->userUsername而不是[]数组语法，或者更容易将TRUE作为json_decode()的第二个参数传递给力它返回一个关联数组。
json_decode($decrypted, TRUE);