public (byte[] Message, byte[] Nonce) Encrypt(byte[] message, string destinationPublicKey)
{
var nonce = PseudoRandom.RandomBytes(Hash.NonceLength);
var sharedKey = this.GetSharedSecret(destinationPublicKey);
var encrypted = Hash.EncryptSymmetric(message, nonce, sharedKey);
return(encrypted, nonce);
}
public CryptoKey(byte[] seed)
{
if (seed != null)
{
try
{
this.SeedHex = seed.ToHexString();
}
catch (Exception)
{
throw new InvalidArgumentException("seed is not a valid hex string");
}
}
else
{
this.SeedHex = PseudoRandom.RandomBytesAsHexString(Hash.SeedLength);
}
this.sharedKeyCache = new ConcurrentDictionary <string, byte[]>();
this.keyInfo = CryptoKeyInfo.FromSeed(seed);
}
public static string RandomBytesAsHexString(int length) => PseudoRandom.RandomBytes(length).ToHexString();
public CryptoKey() : this(PseudoRandom.RandomBytes(Hash.SeedLength))
{
}