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llHMAC

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Signed-off-by: UbitUmarov <ajlduarte@sapo.pt>
This commit is contained in:
Vincent Sylvester
2025-03-31 07:10:32 +02:00
committed by UbitUmarov
parent ac4ae13ceb
commit d9180d3a59
1 changed files with 77 additions and 0 deletions
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77
OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
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@@ -8407,6 +8407,42 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
return Util.SHA1Hash(src, Encoding.UTF8).ToLower();
}
public LSL_String llHMAC(LSL_String private_key, LSL_String message, LSL_String algo)
{
if (private_key.Length < 1 || message.Length < 1)
return new LSL_String();
HMAC hasher;
switch (algo)
{
case "md5":
hasher = new HMACMD5(Encoding.UTF8.GetBytes(private_key));
break;
case "sha1":
hasher = new HMACSHA1(Encoding.UTF8.GetBytes(private_key));
break;
case "sha224":
hasher = new HMACSHA224(Encoding.UTF8.GetBytes(private_key));
break;
case "sha256":
hasher = new HMACSHA256(Encoding.UTF8.GetBytes(private_key));
break;
case "sha384":
hasher = new HMACSHA384(Encoding.UTF8.GetBytes(private_key));
break;
case "sha512":
hasher = new HMACSHA512(Encoding.UTF8.GetBytes(private_key));
break;
default:
return new LSL_String();
}
using (HMAC hmac = hasher)
{
byte[] hashBytes = hmac.ComputeHash(Encoding.UTF8.GetBytes(message));
return new LSL_String(BitConverter.ToString(hashBytes).Replace("-", "").ToLower());
}
}
public LSL_String llSHA256String(LSL_String input)
{
byte[] bytes;
@@ -19358,4 +19394,45 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
}
}
public class HMACSHA224 : HMAC
{
public HMACSHA224(byte[] key)
{
HashName = "SHA-224";
HashSizeValue = 224;
base.Key = key;
HashAlgorithm = new SHA224Managed();
}
public SHA224Managed HashAlgorithm { get; }
}
public class SHA224Managed : SHA256
{
public byte[] ComputeHashe(byte[] buffer)
{
using (SHA256 sha256 = SHA256.Create())
{
byte[] fullHash = sha256.ComputeHash(buffer);
Array.Resize(ref fullHash, 28); // Truncate to 224 bits
return fullHash;
}
}
public override void Initialize()
{
throw new NotImplementedException();
}
protected override void HashCore(byte[] array, int ibStart, int cbSize)
{
throw new NotImplementedException();
}
protected override byte[] HashFinal()
{
throw new NotImplementedException();
}
}
}