public void Sha1AndAes128Works()
{
var crng = new CypherBasedPrngGenerator(_ZeroKey16Bytes, CryptoPrimitive.Aes128Managed(), SHA1.Create(), new CypherCounter(16));
var buffer = new byte[crng.BlockSizeBytes * 2];
crng.FillWithRandomBytes(buffer);
Assert.IsFalse(buffer.All(b => b == 0));
}
public void Aes128And256CyphersProduceDifferentRandomBlocks()
{
var crngAes128 = new CypherBasedPrngGenerator(_ZeroKey16Bytes, CryptoPrimitive.Aes128Managed(), SHA256.Create(), new CypherCounter(16));
var crngAes256 = new CypherBasedPrngGenerator(_ZeroKey32Bytes, CryptoPrimitive.Aes256Managed(), SHA256.Create(), new CypherCounter(16));
var buffer128 = new byte[crngAes128.BlockSizeBytes * 4];
var buffer256 = new byte[crngAes256.BlockSizeBytes * 2];
crngAes128.FillWithRandomBytes(buffer128);
crngAes256.FillWithRandomBytes(buffer256);
CollectionAssert.AreNotEqual(buffer128, buffer256);
}
private static ICryptoPrimitive GetAes128CryptoPrimitive() => managedOrNativeCrypto == ManagedOrNative.Managed ? CryptoPrimitive.Aes128Managed()
: managedOrNativeCrypto == ManagedOrNative.Native ? new BlockCypherCryptoPrimitive(new AesCryptoServiceProvider()
{
KeySize = 128
})
: CryptoPrimitive.Aes128();