blocks|key|526644|text|我不明白你为什么要期待128。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|526645|字节中的8位。64字节。8*+64+=+512位哈希。|526646|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

I'm not sure why you are expecting 128. 

8 bits in a byte. 64 bytes. 8 * 64 = 512 bit hash.

blocks|key|309728|text|从MSDN+Documentation|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|309729|SHA512Managed算法的散列大小为512位。|309730|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/System.Security.Cryptography.SHA512Managed.aspx^0|1|I|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

From the <a href="http://msdn.microsoft.com/en-us/library/System.Security.Cryptography.SHA512Managed.aspx" rel="nofollow">MSDN Documentation</a>: 
The hash size for the SHA512Managed algorithm is 512 bits.

blocks|key|526754|text|您的代码是正确的，但是您应该处理SHA512Managed实例：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|526755|using+(SHA512+shaM+=+new+SHA512Managed())
{
+++hash+=+shaM.ComputeHash(data);
}|code-block|syntax|javascript|526756|512位是64字节。|526757|要将字符串转换为字节数组，需要指定编码。如果你想创建一个哈希码，UTF8是可以的：|526758|var+data+=+Encoding.UTF8.GetBytes("text");++++
using+(...|526759|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|S|8|@]|9|@]|A|$E|F]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Your code is correct, but you should dispose of the SHA512Managed instance:

<pre><code>using (SHA512 shaM = new SHA512Managed())
{
 hash = shaM.ComputeHash(data);
}
</code></pre>

512 bits are 64 bytes.

To convert a string to a byte array, you need to specify an encoding. UTF8 is okay if you want to create a hash code:

<pre><code>var data = Encoding.UTF8.GetBytes("text"); 
using (...
</code></pre>

blocks|key|309821|text|您可以使用System.Security.Cryptography.SHA512类|type|unstyled|depth|inlineStyleRanges|entityRanges|data|309822|MSDN+on+SHA512|offset|length|309823|下面是一个直接来自MSDN的示例|309824|byte[]+data+=+new+byte[DATA_SIZE];
byte[]+result;
SHA512+shaM+=+new+SHA512Managed();
result+=+shaM.ComputeHash(data);|code-block|syntax|javascript|309825|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/system.security.cryptography.sha512^0|0|0|E|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@$D|W|E|X|1|Y]]|A|$]]|$1|F|3|G|5|6|7|Z|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|10|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

You could use the System.Security.Cryptography.SHA512 class

<a href="http://msdn.microsoft.com/en-us/library/system.security.cryptography.sha512" rel="nofollow">MSDN on SHA512</a>

Here is an example, straigt from the MSDN

<pre><code>byte[] data = new byte[DATA_SIZE];
byte[] result;
SHA512 shaM = new SHA512Managed();
result = shaM.ComputeHash(data);
</code></pre>

blocks|key|309841|text|UnicodeEncoding+UE+=+new+UnicodeEncoding();++++++++++++
++++++++byte[]+message+=+UE.GetBytes(password);
++++++++SHA512Managed+hashString+=+new+SHA512Managed();
++++++++string+hexNumber+=+"";
++++++++byte[]++hashValue+=+hashString.ComputeHash(message);
++++++++foreach+(byte+x+in+hashValue)
++++++++{
++++++++++++hexNumber+%2B=+String.Format("{0:x2}",+x);
++++++++}
++++++++string+hashData+=+hexNumber;|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|309842|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>UnicodeEncoding UE = new UnicodeEncoding(); 
 byte[] message = UE.GetBytes(password);
 SHA512Managed hashString = new SHA512Managed();
 string hexNumber = "";
 byte[] hashValue = hashString.ComputeHash(message);
 foreach (byte x in hashValue)
 {
 hexNumber += String.Format("{0:x2}", x);
 }
 string hashData = hexNumber;
</code></pre>

blocks|key|526867|text|您也可以使用BouncyCastle来代替使用System.Security.Cryptography的WinCrypt-API：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|526868|public+static+byte[]+SHA512(string+text)
{
++++byte[]+bytes+=+System.Text.Encoding.UTF8.GetBytes(text);

++++Org.BouncyCastle.Crypto.Digests.Sha512Digest+digester+=+new+Org.BouncyCastle.Crypto.Digests.Sha512Digest();
++++byte[]+retValue+=+new+byte[digester.GetDigestSize()];
++++digester.BlockUpdate(bytes,+0,+bytes.Length);
++++digester.DoFinal(retValue,+0);
++++return+retValue;
}|code-block|syntax|javascript|526869|如果需要HMAC-version+(向散列添加身份验证)|526870|public+static+byte[]+HmacSha512(string+text,+string+key)
{
++++byte[]+bytes+=+Encoding.UTF8.GetBytes(text);

++++var+hmac+=+new+Org.BouncyCastle.Crypto.Macs.HMac(new+Org.BouncyCastle.Crypto.Digests.Sha512Digest());
++++hmac.Init(new+Org.BouncyCastle.Crypto.Parameters.KeyParameter(System.Text.Encoding.UTF8.GetBytes(key)));

++++byte[]+result+=+new+byte[hmac.GetMacSize()];
++++hmac.BlockUpdate(bytes,+0,+bytes.Length);
++++hmac.DoFinal(result,+0);

++++return+result;
}|526871|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Instead of WinCrypt-API using System.Security.Cryptography, you can also use BouncyCastle: 

<pre><code>public static byte[] SHA512(string text)
{
 byte[] bytes = System.Text.Encoding.UTF8.GetBytes(text);

 Org.BouncyCastle.Crypto.Digests.Sha512Digest digester = new Org.BouncyCastle.Crypto.Digests.Sha512Digest();
 byte[] retValue = new byte[digester.GetDigestSize()];
 digester.BlockUpdate(bytes, 0, bytes.Length);
 digester.DoFinal(retValue, 0);
 return retValue;
}
</code></pre>

If you need the HMAC-version (to add authentication to the hash)

<pre><code>public static byte[] HmacSha512(string text, string key)
{
 byte[] bytes = Encoding.UTF8.GetBytes(text);

 var hmac = new Org.BouncyCastle.Crypto.Macs.HMac(new Org.BouncyCastle.Crypto.Digests.Sha512Digest());
 hmac.Init(new Org.BouncyCastle.Crypto.Parameters.KeyParameter(System.Text.Encoding.UTF8.GetBytes(key)));

 byte[] result = new byte[hmac.GetMacSize()];
 hmac.BlockUpdate(bytes, 0, bytes.Length);
 hmac.DoFinal(result, 0);

 return result;
}
</code></pre>

blocks|key|309937|text|我使用了以下代码|type|unstyled|depth|inlineStyleRanges|entityRanges|data|309938|public+static+string+ToSha512(this+string+inputString)
{
++++++++if+(string.IsNullOrWhiteSpace(inputString))+return+string.Empty;
++++++++using+(SHA512+shaM+=+new+SHA512Managed())
++++++++{
++++++++++++return+Convert.ToBase64String(shaM.ComputeHash(Encoding.UTF8.GetBytes(inputString)));
++++++++}
}|code-block|syntax|javascript|309939|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I used the following

<pre><code>public static string ToSha512(this string inputString)
{
 if (string.IsNullOrWhiteSpace(inputString)) return string.Empty;
 using (SHA512 shaM = new SHA512Managed())
 {
 return Convert.ToBase64String(shaM.ComputeHash(Encoding.UTF8.GetBytes(inputString)));
 }
}
</code></pre>

blocks|key|526919|text|保持简单：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|526920|using+(SHA512+sha512+=+new+SHA512Managed())
{
++++password+=+Encoding.UTF8.GetString(sha512.ComputeHash(Encoding.UTF8.GetBytes(password)));
}|code-block|syntax|javascript|526921|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Keeping it simple:
<pre><code>using (SHA512 sha512 = new SHA512Managed())
{
 password = Encoding.UTF8.GetString(sha512.ComputeHash(Encoding.UTF8.GetBytes(password)));
}
</code></pre>

I am trying to write a function to take a string and sha512 it like so?

<pre><code>public string SHA512(string input)
{
 string hash;

 ~magic~

 return hash;
}
</code></pre>

What should the magic be?

How can I SHA512 a string in C#?

身份验证

我正在试着写一个函数来接受一个字符串并像这样sha512它？public string SHA512(string input){     string hash;     ~magic~     return hash;}魔术应该是什么呢？

问如何在C#中SHA512字符串？
EN

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