mcrypt_decrypt（）错误更改键大小 [英] mcrypt_decrypt() error change key size

问题描述

mcrypt_decrypt（）：此算法不支持大小为15的密钥。只支持大小为16,24或32的按键

mcrypt_decrypt(): Key of size 15 not supported by this algorithm. Only keys of sizes 16, 24 or 32 supported

如何解决此问题？我的钥匙设置 - 不能改变它。
它必须是本地的更改，我认为我的本地PHP版本对于我加载的项目来说太高级了。
我如何解决这个问题？

How Can I fix this issue? my key is set - can not change it. It has to be a local change, I think my local PHP version is too advanced for the project I loaded. How can I fix this?

推荐答案

你是否更新到5.6？它说

Did you update to 5.6? It says

无效的钥匙和iv尺寸不再被接受。如果输入无效，mcrypt_decrypt（）将抛出一个警告并返回FALSE。以前的键和IV用'\0'字节填充到下一个有效的大小。

Invalid key and iv sizes are no longer accepted. mcrypt_decrypt() will now throw a warning and return FALSE if the inputs are invalid. Previously keys and IVs were padded with '\0' bytes to the next valid size.

参考

Reference

阅读该报价的最后一行，然后您将找到您的解决方案：）

Read the last line of that quote, and there you will find your solution :)

mcrypt_decrypt（）：此算法不支持大小为15的密钥。只支持大小为16,24或32的键

mcrypt_decrypt(): Key of size 15 not supported by this algorithm. Only keys of sizes 16, 24 or 32 supported

这意味着您需要用 \ 0 （这是以前的版本为你做的）

That means you need to pad your key with \0 (that's what previous versions were doing for you)

$key=$key."\0";

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