35 lines
1.1 KiB
C#
35 lines
1.1 KiB
C#
using System.IO;
|
|
using System.Security.Cryptography;
|
|
using System.Text;
|
|
|
|
namespace SharpChat {
|
|
public static class Extensions {
|
|
public static string GetSignedHash(this string str, string key = null) {
|
|
return Encoding.UTF8.GetBytes(str).GetSignedHash(key);
|
|
}
|
|
|
|
public static string GetSignedHash(this byte[] bytes, string key = null) {
|
|
key ??= File.Exists(@"login_key.txt") ? File.ReadAllText(@"login_key.txt") : @"woomy";
|
|
|
|
StringBuilder sb = new();
|
|
|
|
using(HMACSHA256 algo = new(Encoding.UTF8.GetBytes(key))) {
|
|
byte[] hash = algo.ComputeHash(bytes);
|
|
|
|
foreach(byte b in hash)
|
|
sb.AppendFormat(@"{0:x2}", b);
|
|
}
|
|
|
|
return sb.ToString();
|
|
}
|
|
|
|
public static string GetIdString(this byte[] buffer) {
|
|
const string id_chars = @"abcdefghijklmnopqrstuvwxyz0123456789-_ABCDEFGHIJKLMNOPQRSTUVWXYZ";
|
|
StringBuilder sb = new();
|
|
foreach(byte b in buffer)
|
|
sb.Append(id_chars[b % id_chars.Length]);
|
|
return sb.ToString();
|
|
}
|
|
}
|
|
}
|