问题描述
我的 Delphi 应用程序使用 TurboPower LockBox 3 使用 AES 256 加密明文信息.我现在想使用 PHP 解密此信息.但是 TurboPower LockBox 3 存在一些互操作性问题.
My Delphi application uses TurboPower LockBox 3 to encrypt a plaintext information using AES 256. I now want to decrypt this information using PHP. But TurboPower LockBox 3 has some interoperability issues.
请在此处查看 LockBox 3 作者的帖子以了解详细信息:
Please check the post by LockBox 3 author here for details :
http://lockbox.seanbdurkin.id.au/tiki-view_forum_thread.php?comments_parentId=363&topics_offset=1
还有一篇关于 Stackoverflow 的类似帖子
And a similar post on Stackoverflow
Delphi 中的安全密钥对加密解决方案 &PHP?
在 LockBox 3 中，在加密期间，您设置密码.然后将此密码用作生成密钥和 iv 的种子.那么有没有人能够模仿 PHP 端的密钥生成方法?或者有什么方法可以让我获得 LockBox 3 生成的密钥/IV 并将其放入我的 PHP 代码中，以便可以解密文件?
In LockBox 3, during encryption, you set a password. This password is then used as a seed to generate the key and iv. So has anyone been able to mimic the key generation method on PHP side ? Or is there any way i can get the Key/IV being generated by LockBox 3 and put it in my PHP code so the file can be decrypted ?
推荐答案
IV
如前所述，IV nonce 被添加到密文消息中.所以要在 PHP 端获取它，只需提取前 8 个字节即可.
IV
As stated to you before, the IV nonce is prepended to the ciphertext message. So to obtain it on the PHP side, simply extract the first 8 bytes.
您需要决定共享密钥是密码字符串格式还是二进制密钥格式.symetric Key 类 (TSymetricKey) 有一个 SaveToStream() 方法，它按您的预期工作.TCodec 组件有一个 Key 属性，设置密码、链接模式和密码后即可使用.
You need to decide if the shared secret is in password-string format or binary key format. The symetric Key class (TSymetricKey) has a method SaveToStream(), which works as you would expect it to. The TCodec component has a Key property, which will be available after you set the cipher, chaining mode and password.
所有方法都是自文档化的，并且几乎按照它们的阅读方式执行，但是如果您需要一些演示代码，将密钥保存到流中，请告诉我.
All of the methods are self-documenting and do pretty much what they read like, however if you need some demo code, saving a key to a stream, let me know.
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