/// <summary>
/// Complete the hash, returning its value
/// </summary>
public byte[] HashFinal()
{
Contract.Ensures(Contract.Result <byte[]>() != null);
Contract.Assert(m_hashHandle != null);
return(CapiNative.GetHashParameter(m_hashHandle, CapiNative.HashParameter.HashValue));
}
/*
* SafeCritical - we're not exposing out anything that we want to prevent untrusted code from getting at
*/
public CapiHashAlgorithm(
string provider,
CapiNative.ProviderType providerType,
CapiNative.AlgorithmId algorithm)
{
Contract.Requires(!string.IsNullOrEmpty(provider));
Contract.Requires((CapiNative.AlgorithmClass)((uint)algorithm & (uint)CapiNative.AlgorithmClass.Hash) == CapiNative.AlgorithmClass.Hash);
m_algorithmId = algorithm;
m_cspHandle = CapiNative.AcquireCsp(null,
provider,
providerType,
CapiNative.CryptAcquireContextFlags.VerifyContext,
true);
m_hashHandle = Initialize();
}
