MD5哈希加密和解密 [英] MD5 hash encrypt and decryption

问题描述

i这个编码解码stufs是新的，我有一些问题。

我在VS 2012 ASP.NET c＃上工作。

我的问题是我需要从某个输入字符串创建CheckSum值。 CheckSum的长度需要为16字节（32个字符）长，如下所示：8A303F3E0CB4F8A9CDA5AC120F9B90A4。

加密需要使用密钥完成，例如TEST_PASS，将使用此密钥后者要解密这个哈希值....

希望你理解我的要求和我需要的东西请帮助我

解决方案

否！ MD5是加密的东西，但它不用于加密或解密。这是加密哈希函数：

http：//en.wikipedia。 org / wiki / Cryptographic_hash_function [ ^ ]。



因此，它并不好;强烈建议不要将它用于任何加密目的：它已被破坏。请参阅： http://en.wikipedia.org/wiki/Md5 [ ^ ]。



那就是它。但是校验和可以用于非加密目的，但仅作为检查。这是你可能需要的。因此，您需要的一切都在.NET FCL中提供：

http://msdn.microsoft.com/en-us/library/system.security.cryptography.hashalgorithm.aspx [ ^ ]。

-SA

Hi,
i am new in this encoding decoding stufs and i have some problem.
I work on VS 2012 ASP.NET c#.
My problem is that i need to create CheckSum value from some input string. The length of the CheckSum need to be 16 bytes (32 characters) long like this one: "8A303F3E0CB4F8A9CDA5AC120F9B90A4".
The encryption need to be done using a pass key for example TEST_PASS and this key will be used latter to be decrypted this hash value....
hope you understand what i ask and what i need pls help me

解决方案

No! MD5 is cryptography thing, but its not for encryption or decryption. This is a cryptographic hash function:
http://en.wikipedia.org/wiki/Cryptographic_hash_function[^].

And as such, it is not good; it''s strongly recommended not to use it for any cryptographic purposes: it''s broken. Please see: http://en.wikipedia.org/wiki/Md5[^].

That''s it. But check sum can be used for non-cryptographic purposes, but just as a check. This is what you probably need. So, everything you need is provided in .NET FCL:
http://msdn.microsoft.com/en-us/library/system.security.cryptography.hashalgorithm.aspx[^].

—SA

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