/// <summary>
/// Signs some bytes.
/// </summary>
/// <returns>The singed byte array.</returns>
/// <param name="toSign">The bytes to sign</param>
/// <param name="signKeyPair">KeyPair to sign the bytes with.</param>
public static byte[] SignByteDetached(byte[] toSign, KeyPair signKeyPair)
{
byte[] signature = new byte[CRYPTO_SIGN_BYTES];
long signatureLength = signature.Length;
long toSingLength = toSign.Length;
NativeLibsodium.crypto_sign_detached(signature, ref signatureLength, toSign, toSingLength, signKeyPair.secretKey);
return(signature);
}
public byte[] GetSignatureBytes(byte[] msg)
{
if (keyPair == null)
{
Debug.LogError("Key pair not initialized");
return(null);
}
if (msg == null)
{
Debug.LogError("Msg cannot be null");
return(null);
}
byte[] sig = new byte[64];
long sigLen = 0;
try
{
if (lastMsgBytes != msg)
{
Debug.LogWarning("Warning msg does not match:");
Debug.LogWarning(Encoding.ASCII.GetString(msg));
}
Debug.Log($"signing message of len {msg.Length} with sk of: {GetSK()}");
if (NativeLibsodium.crypto_sign_detached(sig, ref sigLen, msg, msg.Length, keyPair.skBytes) == 0)
{
lastMsgBytes = msg;
return(sig);
}
}
catch (Exception ex)
{
Debug.LogError("Error generating signature: " + ex.Message);
}
return(null);
}