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C# code php equivalent md5 hash

I have this C# code:
public static string Encript(string strData)
{
string hashValue = HashData(strData);
string hexHashData = ConvertStringToHex(hashValue);
return hexHashData;
}
public static string HashData(string textToBeEncripted)
{
//Convert the string to a byte array
Byte[] byteDataToHash = System.Text.Encoding.Unicode.GetBytes(textToBeEncripted);
//Compute the MD5 hash algorithm
Byte[] byteHashValue = new System.Security.Cryptography.MD5CryptoServiceProvider().ComputeHash(byteDataToHash);
return System.Text.Encoding.Unicode.GetString(byteHashValue);
}
public static string ConvertStringToHex(string asciiString)
{
string hex = "";
foreach (char c in asciiString)
{
int tmp = c;
hex += String.Format("{0:x2}", (uint) System.Convert.ToUInt32(tmp.ToString()));
}
return hex;
}
Here you can see an online version.As you can see for the string "test" I get the output "5c82e9e41c7599f790ef1d774b7e6bf"
And this is what I tried on php side
$a = "test";
$a = mb_convert_encoding($a, "UTF-16LE");
$a = md5($a);
echo $a;
But the value of the php code is "c8059e2ec7419f590e79d7f1b774bfe6".Why is not working?
Edit:Looks like the C# code is incorrect and needs to be replaced

The correct MD5 hash for 'test' is '098f6bcd4621d373cade4e832627b4f6' in PHP.
I tested it with this code in C#
public static string CreateMD5(string input)
{
// Use input string to calculate MD5 hash
using (System.Security.Cryptography.MD5 md5 = System.Security.Cryptography.MD5.Create())
{
byte[] inputBytes = System.Text.Encoding.ASCII.GetBytes(input);
byte[] hashBytes = md5.ComputeHash(inputBytes);
// Convert the byte array to hexadecimal string
StringBuilder sb = new StringBuilder();
for (int i = 0; i < hashBytes.Length; i++)
{
sb.Append(hashBytes[i].ToString("X2"));
}
return sb.ToString();
}
}
It will generate the same hash as PHP will, without the 'convert encoding' method you are using.

I believe converting the encoding is what is giving you a different answer, try it without
$a = mb_convert_encoding($a, "UTF-16LE");

The problem is that you are converting the result incorrectly in your C# code. If you put a breakpoint in the code after you call ComputeHash, and examine the value of byteHashValue, you'll see that it's c8059e2e....
Or, just add this code to your ComputeHash method:
Console.WriteLine(BitConverter.ToString(byteHashValue));
I would suggest rewriting your code to be:
public static string Encript(string strData)
{
string hashValue = HashData(strData);
return hashValue;
}
public static string HashData(string textToBeEncripted)
{
//Convert the string to a byte array
Byte[] byteDataToHash = System.Text.Encoding.Unicode.GetBytes(textToBeEncripted);
//Compute the MD5 hash algorithm
Byte[] byteHashValue = new System.Security.Cryptography.MD5CryptoServiceProvider().ComputeHash(byteDataToHash);
return BitConverter.ToString(byteHashValue).Replace("-", "");
}
Oh, and a side note: the word is "Encrypt," not "Encript."

The problem in your case is not the encoding, but your conversion to string on the C# side. As long as you use the same encoding everywhere, it should work as expected. But note, that most of the online hashers use ASCII encoding, whereas you use System.Text.Encoding.Unicode which is UTF-16, thus the results will differ from the online encoders.
The code below will give the same result as your PHP snippet (ie c8059e2ec7419f590e79d7f1b774bfe6)
public static void Main(string[] args)
{
string a = "test";
string en = HashData(a);
Console.WriteLine(en);
}
public static string HashData(string textToBeEncripted)
{
Byte[] byteDataToHash = System.Text.Encoding.Unicode.GetBytes(textToBeEncripted);
Byte[] byteHashValue = new System.Security.Cryptography.MD5CryptoServiceProvider().ComputeHash(byteDataToHash);
System.Text.StringBuilder s = new System.Text.StringBuilder();
foreach (var b in byteHashValue)
s.Append(b.ToString("x2"));
return s.ToString();
}
If you use System.Text.Encoding.ASCII instead, you will get 098f6bcd4621d373cade4e832627b4f6 as suggested in other answers. But then you'll have to use ASCII encoding in your PHP code as well.
This is because with UTF16 every character is represented by two bytes, and not only by one. Thus the byteDataToHash will have twice the size ([116, 0, 101, 0, 115, 0, 116, 0] vs [116, 101, 115, 116] in your case). And a different bytevector of course leads to a different hashvalue. But as said above, as long as all included components use the same encoding, it does not really matter which one you use.

Reverse Convert.ToBase64String(byte[] array)

In example
string newString = Convert.ToBase64String(byte[] array)
How would I go about converting newString to get a byte[] (byte array)?

Convert.FromBase64String(newString)

byte[] data = Convert.FromBase64String(newString);
string decodedString = Encoding.UTF8.GetString(data);

byte[] array= Convert.FromBase64String(newString);

Convert a string to byte[] for socket

I am writing a simple ftp client with c#.
I am not pro in c#. Is there any way to convert string to byte[] and write it to the socket?
for example for introducing username this is the socket content:
5553455220736f726f7573680d0a
and ASCII equivalent is:
USER soroush
I want a method to convert string. Something like this:
public byte[] getByte(string str)
{
byte[] ret;
//some code here
return ret;
}

Try
byte[] array = Encoding.ASCII.GetBytes(input);

// C# to convert a string to a byte array.
public static byte[] StrToByteArray(string str)
{
Encoding encoding = Encoding.UTF8; //or below line
//System.Text.UTF8Encoding encoding=new System.Text.UTF8Encoding();
return encoding.GetBytes(str);
}
and
// C# to convert a byte array to a string.
byte [] dBytes = ...
string str;
Encoding enc = Encoding.UTF8; //or below line
//System.Text.UTF8Encoding enc = new System.Text.UTF8Encoding();
str = enc.GetString(dBytes);

Conversion between Base64String and Hexadecimal

I use in my C++/CLI project ToBase64String to give a string like /MnwRx7kRZEQBxLZEkXndA== I want to convert this string to Hexadecimal representation, How I can do that in C++/CLI or C#?

FromBase64String will take the string to bytes
byte[] bytes = Convert.FromBase64String(string s);
Then, BitConverter.ToString() will convert a byte array to a hex string ( byte[] to hex string )
string hex = BitConverter.ToString(bytes);

Convert the string to a byte array and then do a byte to hex conversion
string stringToConvert = "/MnwRx7kRZEQBxLZEkXndA==";
byte[] convertedByte = Encoding.Unicode.GetBytes(stringToConvert);
string hex = BitConverter.ToString(convertedByte);
Console.WriteLine(hex);

public string Base64ToHex(string strInput)
{
try
{
var bytes = Convert.FromBase64String(strInput);
var hex = BitConverter.ToString(bytes);
return hex.Replace("-", "").ToLower();
}
catch (Exception)
{
return "-1";
}
}
On the contrary: https://stackoverflow.com/a/61224761/3988122

Convert a String to binary sequence in C# [duplicate]

This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
How do you convert a string to ascii to binary in C#?
How to convert string such as "Hello" to Binary sequence as 1011010 ?

Try this:
string str = "Hello";
byte []arr = System.Text.Encoding.ASCII.GetBytes(str);

string result = string.Empty;
foreach(char ch in yourString)
{
result += Convert.ToString((int)ch,2);
}
this will translate "Hello" to 10010001100101110110011011001101111

string testString = "Hello";
UTF8Encoding encoding = new UTF8Encoding();
byte[] buf = encoding.GetBytes(testString);
StringBuilder binaryStringBuilder = new StringBuilder();
foreach (byte b in buf)
{
binaryStringBuilder.Append(Convert.ToString(b, 2));
}
Console.WriteLine(binaryStringBuilder.ToString());

Use the BitConverter to get the bytes of the string and then format these bytes to their binary representation:
byte[] bytes = System.Text.Encoding.Default.GetBytes( "Hello" );
StringBuilder sb = new StringBuilder();
foreach ( byte b in bytes )
{
sb.AppendFormat( "{0:B}", b );
}
string binary = sb.ToString();