public static byte[] Create(byte[] Message, byte[] Nonce, byte[] SecretKey, byte[] PublicKey)
{
if (SecretKey == null || SecretKey.Length != GetSecretKeyBytesLength())
{
throw new ArgumentException("Error: Secret key must be " + GetSecretKeyBytesLength() + " bytes in length");
}
if (PublicKey == null || PublicKey.Length != GetPublicKeyBytesLength())
{
throw new ArgumentException("Error: Public key must be " + GetPublicKeyBytesLength() + " bytes in length");
}
if (Nonce == null || Nonce.Length != GetNonceBytesLength())
{
throw new ArgumentException("Error: Nonce must be " + GetNonceBytesLength() + " bytes in length");
}
byte[] CipherText = new byte[Message.Length + GetMACBytesLength()];
int ret = SodiumPublicKeyBoxLibrary.crypto_box_easy(CipherText, Message, Message.Length, Nonce, PublicKey, SecretKey);
GCHandle MyGeneralGCHandle = new GCHandle();
MyGeneralGCHandle = GCHandle.Alloc(SecretKey, GCHandleType.Pinned);
SodiumSecureMemory.MemZero(MyGeneralGCHandle.AddrOfPinnedObject(), SecretKey.Length);
MyGeneralGCHandle.Free();
MyGeneralGCHandle = GCHandle.Alloc(PublicKey, GCHandleType.Pinned);
SodiumSecureMemory.MemZero(MyGeneralGCHandle.AddrOfPinnedObject(), PublicKey.Length);
MyGeneralGCHandle.Free();
if (ret != 0)
{
throw new CryptographicException("Failed to create PublicKeyBox");
}
return(CipherText);
}
