PHP通过URL发送加密数据 [英] PHP sending encrypted data via the URL

问题描述

我试图通过URL发送加密数据到另一个地方（使用的file_get_contents（anotherUrl.php？哈希= $ encryptedString），问题是，有时，加密包含一些特殊的字符，例如+，这导致解密失败。

I'm trying to send encrypted data over the url to another site (using file_get_contents("anotherUrl.php?hash=$encryptedString"). The problem is, sometimes, the encryption contains some special characters, like +, and this causes the decryption to fail.

下面是我的加密/解密方法：

Here are my encryption / decryption methods:

public function encrypt($string, $key)
{
    return base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, md5($key), $string, MCRYPT_MODE_CBC, md5(md5($key))));
}

public function decrypt($encrypted, $key)
{
    return rtrim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, md5($key), base64_decode($encrypted), MCRYPT_MODE_CBC, md5(md5($key))), "\0");
}

下面是它包含一个 + ，和我猜测，这会导致解密失败的例子加密的字符串。

Here's an example encrypted string which contains a +, and I'm guessing that this causes the decryption to fail.

oWCrVPaS + 5GbxcQFc0fulUk / zRAkDD60av4zlPiWskE =

任何想法，我应该怎么解决这个问题？我试着做 urlen code（）和 urlde code（）散列然而也似乎导致加密断裂。有没有办法来改变加密算法得到它只有返回URL安全字符？

Any ideas how I should solve this? I've tried to do urlencode() and urldecode() on the hash, however that also seems to cause the encryption to break. Is there a way to change the encryption algorithm to get it to only return url safe characters?

推荐答案

在这个线程看看：

在网址

从本质上讲，你的 DO 希望 urlen code（）发送字符串之前，但是你做的不可以希望 urlde code（）在另一端。

Essentially you DO want to urlencode() before sending the string, however you do NOT want to urldecode() at the other end.

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