UUID与互操作的C＃代码 [英] UUID interop with c# code

问题描述

CAN C＃DONet中生成Java代码相同的UUID？如果又如何？ ！我想GUID，但没有奏效。

Can c# donet generate same UUID for following java code? if so how? i tried GUID but didn't work!

正文：

String cleartext = "CN=CompanyName;mac=some mac;@host=somehost;email=[e-mail];issued=01/01/20013;expire=12/12/2013";

Java代码：

Java code:

UUID uuid = UUID.nameUUIDFromBytes(cleartext.getBytes("UTF-8"));

C＃代码：

C# code:

byte[] b = System.Text.Encoding.UTF8.GetBytes(cleartext);
        Guid uid = new Guid(b);
        Console.Write(uid.ToString());

REF
的早些时候讨论

推荐答案

如果你需要的是相同的UUID字符串（而不是实际的UUID /的Guid对象），这个C＃方法将返回相同的值作为Java的 UUID.nameUUIDFromBytes（字节[]）方法

If all you need is the same UUID string (and not actual UUID/Guid objects), this C# method will return the same value as Java's UUID.nameUUIDFromBytes(byte[]) method.

public static string NameUUIDFromBytes(byte[] input)
{
    MD5 md5 = MD5.Create();
    byte[] hash = md5.ComputeHash(input);
    hash[6] &= 0x0f;
    hash[6] |= 0x30;
    hash[8] &= 0x3f;
    hash[8] |= 0x80;
    string hex = BitConverter.ToString(hash).Replace("-", string.Empty).ToLower();
    return hex.Insert(8, "-").Insert(13, "-").Insert(18, "-").Insert(23, "-");
}

C＃示例

C# Example

string test = "test";
Console.Out.WriteLine(NameUUIDFromBytes(Encoding.UTF8.GetBytes(test)));

Output:
098f6bcd-4621-3373-8ade-4e832627b4f6

Java示例

UUID test = UUID.nameUUIDFromBytes("test".getBytes("UTF-8"));
System.out.println(test);

Output:
098f6bcd-4621-3373-8ade-4e832627b4f6

修改：我知道这事后，但是这将产生相同的值实际的Guid 对象。只是柜面任何人想要它。

Edit: I know it's after the fact, but this will produce an actual Guid object with the same value. Just incase anyone wants it.

public static Guid NameGuidFromBytes(byte[] input)
{
    MD5 md5 = MD5.Create();
    byte[] hash = md5.ComputeHash(input);
    hash[6] &= 0x0f;
    hash[6] |= 0x30;
    hash[8] &= 0x3f;
    hash[8] |= 0x80;

    byte temp = hash[6];
    hash[6] = hash[7];
    hash[7] = temp;

    temp = hash[4];
    hash[4] = hash[5];
    hash[5] = temp;

    temp = hash[0];
    hash[0] = hash[3];
    hash[3] = temp;

    temp = hash[1];
    hash[1] = hash[2];
    hash[2] = temp;
    return new Guid(hash);
}

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