internal EncryptedSafeByteCollection(
IFastEncryptor encryptor,
IMemoryProtectedBytes encryptionKey,
ICryptoRandom fastRandom,
ISafeByteFactory safeByteFactory,
IByteIdListSerializer <int> serializer)
{
if (fastRandom == null)
{
throw new ArgumentNullException(nameof(fastRandom));
}
_encryptionKey = new AsyncLazy <IMemoryProtectedBytes>(async() =>
{
await encryptionKey.InitializeAsync(fastRandom.GetBytes(encryptionKey.BlockSizeInBytes))
.ConfigureAwait(false);
return(encryptionKey);
});
_encryptor = encryptor ?? throw new ArgumentNullException(nameof(encryptor));
_safeByteFactory = safeByteFactory ?? throw new ArgumentNullException(nameof(safeByteFactory));
_serializer = serializer;
_salt = fastRandom.GetBytes(encryptor.BlockSizeInBits / 8);
}
/// <summary>Create a new ECDH key pair for key exchange.</summary>
/// <param name="random">Random number generator to use for generating keys.</param>
/// <param name="allocator">Allocator to use for allocating keys.</param>
public CryptoECDH(ICryptoRandom random, Allocator allocator)
{
// Validate
if (allocator == null)
{
throw new ArgumentNullException(nameof(allocator), "No allocator");
}
// Initialize
Allocator = allocator;
Disposed = false;
// Generate private key
PrivateKey = Allocator.CreateKey(32);
random.GetBytes(PrivateKey, 0, 32);
Curve25519.ClampPrivateKeyInline(PrivateKey);
// Generate public key
PublicKey = Allocator.CreateKey(32);
Curve25519.GetPublicKeyInline(PrivateKey, PublicKey);
}
internal MemoryProtector(IFastEncryptor encryptor, ICryptoRandom random)
{
_encryptor = encryptor;
_key = random.GetBytes(Encryptor.MinKeySize);
}
/// <exception cref="ArgumentNullException"><paramref name="encryptor" /> is <see langword="null" />.</exception>
/// <exception cref="ArgumentNullException"><paramref name="random" /> is <see langword="null" />.</exception>
internal MemoryProtector(IFastEncryptor encryptor, ICryptoRandom random)
{
_encryptor = encryptor ?? throw new ArgumentNullException(nameof(encryptor));
_key = random.GetBytes(Encryptor.MinKeySizeInBits);
_encryptor.Padding = PaddingMode.None;
}
protected byte[] GetIv() => _random.GetBytes(IvSize);
