[英]C# equivalent to hash_hmac in PHP
using .NET and C# i need to provide an integrity string using HMAC SHA512 to a PHP server . 使用.NET和C#我需要使用HMAC SHA512为PHP服务器提供完整性字符串。 Using in C# :
在C#中使用:
Encoding encoding = Encoding.UTF8;
byte[] keyByte = encoding.GetBytes(key);
HMACSHA512 hmacsha512 = new HMACSHA512(keyByte);
byte[] messageBytes = encoding.GetBytes(message);
byte[] hashmessage = hmacsha512.ComputeHash(messageBytes);
return(ByteToString(hashmessage).toUpper());
But it doesn't match with PHP hash_hmac() PHP code : 但它与PHP hash_hmac()PHP代码不匹配:
$hmac = strtoupper(hash_hmac($pbx_hash, $msg, $binKey));
I try to change encoding in C# (utf8, ASCII,Unicode) Without success. 我尝试用C#(utf8,ASCII,Unicode)改变编码而没有成功。
I've tried many solution found on the net but nothing give the same string :( 我已尝试在网上找到很多解决方案,但没有给出相同的字符串:(
I can't change the PHP code, and doesn't see what's wrong in C# 我无法更改PHP代码,也看不出C#中的错误
Edit This is ByteToString
(copied from the comment): 编辑这是
ByteToString
(从评论中复制):
static string ByteToString(byte[] buff)
{
string sbinary = "";
for (int i = 0; i < buff.Length; i++)
{
sbinary += buff[i].ToString("X2"); /* hex format */
}
return (sbinary);
}
After many tets, in found that i get the same results if PHP hash_hmac key is a string, not a byte Array . 经过多次发布后,我发现如果PHP hash_hmac键是一个字符串,而不是一个字节数组,我会得到相同的结果。 Seems that the problem is with the PHP convert function $binKey = pack("H*", $keyTest);
似乎问题出在PHP转换函数$ binKey = pack(“H *”,$ keyTest);
The problem must be the actual representation of the key/message data. 问题必须是密钥/消息数据的实际表示。
See the following tests: 请参阅以下测试:
PHP
#!/usr/bin/php
<?php
print strtoupper(hash_hmac("sha256", "message", "key"));
?>
Output (live via http://writecodeonline.com/php/ ): 输出(通过http://writecodeonline.com/php/直播):
6E9EF29B75FFFC5B7ABAE527D58FDADB2FE42E7219011976917343065F58ED4A
C#
using System;
using System.Text;
using System.Security.Cryptography;
public class Program
{
private const string key = "key";
private const string message = "message";
private static readonly Encoding encoding = Encoding.UTF8;
static void Main(string[] args)
{
var keyByte = encoding.GetBytes(key);
using (var hmacsha256 = new HMACSHA256(keyByte))
{
hmacsha256.ComputeHash(encoding.GetBytes(message));
Console.WriteLine("Result: {0}", ByteToString(hmacsha256.Hash));
}
}
static string ByteToString(byte[] buff)
{
string sbinary = "";
for (int i = 0; i < buff.Length; i++)
sbinary += buff[i].ToString("X2"); /* hex format */
return sbinary;
}
}
Output (live via http://ideone.com/JdpeL ): 输出(通过http://ideone.com/JdpeL直播):
Result: 6E9EF29B75FFFC5B7ABAE527D58FDADB2FE42E7219011976917343065F58ED4A
So, check the character set/encoding of the PHP input data. 因此,检查PHP输入数据的字符集/编码。 Also check the actual algorithm (in
$pbx_hash
). 还要检查实际算法(在
$pbx_hash
)。
private static string HashHmac(string message, string secret)
{
Encoding encoding = Encoding.UTF8;
using (HMACSHA512 hmac = new HMACSHA512(encoding.GetBytes(secret)))
{
var msg = encoding.GetBytes(message);
var hash = hmac.ComputeHash(msg);
return BitConverter.ToString(hash).ToLower().Replace("-", string.Empty);
}
}
As said upper, the problem was with PHP Pack(H* function used to convert key to byte array. C# Getbytes doesn't give the same result (utf8, asci, unicode...). The solution found here : http://www.nuronconsulting.com/c-pack-h.aspx was ok for me. now HMAC from C# match with PHP ! 如上所述,问题在于PHP Pack(用于将密钥转换为字节数组的H *函数.C#Getbytes不会给出相同的结果(utf8,asci,unicode ......)。解决方案在这里找到: http:/ /www.nuronconsulting.com/c-pack-h.aspx对我来说没问题。现在来自C#的HMAC与PHP匹配!
public static byte[] PackH(string hex)
{
if ((hex.Length % 2) == 1) hex += '0';
byte[] bytes = new byte[hex.Length / 2];
for (int i = 0; i < hex.Length; i += 2)
{
bytes[i / 2] = Convert.ToByte(hex.Substring(i, 2), 16);
}
return bytes;
}
Manu thanks to all for your help. Manu感谢所有人的帮助。
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