ios – .net vs Objective c SHA-512不匹配

我正在尝试编写用于从.net函数创建sha512字符串的函数

public static string GetSHA512(string strPlain)
{
    UnicodeEncoding UE = new UnicodeEncoding();
    byte[] HashValue = null;
    byte[] MessageBytes = UE.GetBytes(strPlain);
    System.Security.Cryptography.SHA512Managed SHhash = new System.Security.Cryptography.SHA512Managed();
    string strHex = string.Empty;

    HashValue = SHhash.ComputeHash(MessageBytes);
    foreach (byte b in HashValue)
    {
        strHex += String.Format("{0:x2}",b);
    }
    return strHex;
}

这给出了结果

input : pass123
output: 2a6353744cc2914c602265f50d2e413d0561368775756392517abb340ef75d52ee0c5d3623ddd1826fd768a13dca8961f5957c75df0d793b9d7537aabe050705

我试过的是如下

-(Nsstring *)createSHA512:(Nsstring *)string
{
    const char *cstr = [string cStringUsingEncoding:NSUTF8StringEncoding];
    NSData *data = [NSData dataWithBytes:cstr length:string.length];
    uint8_t digest[CC_SHA512_DIGEST_LENGTH];
    CC_SHA512(data.bytes,data.length,digest);
    NSMutableString* output = [NSMutableString  stringWithCapacity:CC_SHA512_DIGEST_LENGTH];

    for(int i = 0; i < CC_SHA512_DIGEST_LENGTH; i++)
        [output appendFormat:@"%02x",digest[i]];
    return output;
}

给出结果如下

input : pass123
output: fd37ca5ca8763ae077a5e9740212319591603c42a08a60dcc91d12e7e457b024f6bdfdc10cdc1383e1602ff2092b4bc1bb8cac9306a9965eb352435f5dfe8bb0

任何人都可以建议我做错了什么？

为什么这两个值不同？

请纠正我的错误.

编辑

意思是虽然我尝试将编码改为NSUTF16StringEncoding和NSUnicodeStringEncoding,结果仍然不同,如下所示

input : pass123
output: 514331e3f7ca0a295539347ebccc4e4f095fe5f3c1df10d43b4d550144c7b30ba9507831893ea63ea22e62e993be529b0d14be7800a90aa0de199d6be62a5f1b

解决方法

在Objective C版本中,您使用UTF-8将文本转换为二进制文件.在.NET版本中,您使用的是UTF-16.这可能不是唯一的区别,但它肯定是一个相关的.

我将你的.NET方法重写为：

public static string GetSHA512(string text)
{
    byte[] messageBytes = Encoding.UTF8.GetBytes(text);

    byte[] hash;
    using (SHA512 hashAlgorithm = SHA512.Create())
    {
        hash = hashAlgorithm.ComputeHash(messageBytes);
    }

    StringBuilder builder = new StringBuilder();
    foreach (byte b in hash)
    {
        builder.AppendFormat("{0:x2}",b);
    }        
    return builder.ToString();
}