public void ConstructAesCspCrng()
{
var crng = new CypherBasedPrngGenerator(_ZeroKey32Bytes, NativeCryptoPrimitives.GetAes256Csp(), SHA256.Create(), new CypherCounter(16));
// Creating a generator should not actually generate any bytes.
Assert.AreEqual(crng.BytesGenerated, 0L);
Assert.AreEqual(crng.BytesRequested, 0L);
}
public void GenerateSingleBlockAesCsp()
{
var crng = new CypherBasedPrngGenerator(_ZeroKey32Bytes, NativeCryptoPrimitives.GetAes256Csp(), SHA256.Create(), new CypherCounter(16), 0);
var buffer = new byte[crng.BlockSizeBytes];
crng.FillWithRandomBytes(buffer);
Assert.IsFalse(buffer.All(b => b == 0));
Assert.AreEqual(crng.BytesGenerated, buffer.Length + (crng.BlockSizeBytes * 2));
Assert.AreEqual(crng.BytesRequested, buffer.Length);
}
public void AesCyphersProduceSameRandomBlocks()
{
var crngManaged = new CypherBasedPrngGenerator(_ZeroKey32Bytes, CryptoPrimitive.Aes256Managed(), SHA256.Create(), new CypherCounter(16));
var crngCsp = new CypherBasedPrngGenerator(_ZeroKey32Bytes, NativeCryptoPrimitives.GetAes256Csp(), SHA256.Create(), new CypherCounter(16));
var bufferManaged = new byte[crngManaged.BlockSizeBytes * 2];
var bufferCsp = new byte[crngManaged.BlockSizeBytes * 2];
crngManaged.FillWithRandomBytes(bufferManaged);
crngCsp.FillWithRandomBytes(bufferCsp);
CollectionAssert.AreEqual(bufferManaged, bufferCsp);
}
