public BCryptHashAlgorithm(CngAlgorithm algorithm, string implementation)
{
if (!BCryptNative.BCryptSupported)
{
throw new PlatformNotSupportedException(System.SR.GetString("Cryptography_PlatformNotSupported"));
}
this.m_algorithmHandle = BCryptNative.OpenAlgorithm(algorithm.Algorithm, implementation);
this.Initialize();
}
public SafeBCryptAlgorithmHandle GetCachedAlgorithmHandle(string algorithm, string implementation)
{
string handleKey = algorithm + implementation;
SafeBCryptAlgorithmHandle algorithmHandle = null;
if (m_algorithmHandles.ContainsKey(handleKey))
{
algorithmHandle = m_algorithmHandles[handleKey].Target as SafeBCryptAlgorithmHandle;
if (algorithmHandle != null)
{
return(algorithmHandle);
}
}
algorithmHandle = BCryptNative.OpenAlgorithm(algorithm, implementation);
m_algorithmHandles[handleKey] = new WeakReference(algorithmHandle);
return(algorithmHandle);
}
