/// <summary>
/// Test the StreamDigest class implementation
/// <para>Throws an Exception on failure</</para>
/// </summary>
public static void StreamDigestTest()
{
byte[] data;
MemoryStream instrm;
MemoryStream outstrm = new MemoryStream();
using (KeyGenerator kg = new KeyGenerator())
data = kg.GetBytes(512);
// data to digest
instrm = new MemoryStream(data);
byte[] code1;
byte[] code2;
using (StreamDigest sd = new StreamDigest(Digests.Keccak512))
{
sd.Initialize(instrm);
code1 = sd.ComputeHash();
}
using (Keccak512 kc = new Keccak512())
code2 = kc.ComputeHash(data);
// compare the hash codes
if (!Compare.AreEqual(code1, code2))
throw new Exception();
}
private byte[] HashTest2(string FileName)
{
using (FileStream inStream = new FileStream(FileName, FileMode.Open))
{
using (StreamDigest dgst = new StreamDigest(new SHA512()))
{
dgst.Initialize(inStream);
// linear processing
dgst.IsConcurrent = false;
return dgst.ComputeHash();
}
}
}
private bool HashTest3()
{
byte[] data = new CSPRng().GetBytes(33033);
byte[] hash1;
byte[] hash2;
using (StreamDigest dgt1 = new StreamDigest(new SHA512()))
{
dgt1.Initialize(new MemoryStream(data));
// run concurrent mode
dgt1.IsConcurrent = true;
hash1 = dgt1.ComputeHash();
}
using (SHA512 dgt2 = new SHA512())
hash2 = dgt2.ComputeHash(data);
return Compare.AreEqual(hash1, hash2);
}
private byte[] HashTest1(string FileName)
{
using (FileStream inStream = new FileStream(FileName, FileMode.Open))
{
using (StreamDigest dgst = new StreamDigest(new SHA512()))
{
dgst.Initialize(inStream);
// run concurrent mode
dgst.IsConcurrent = true;
return dgst.ComputeHash();
}
}
}