MD5

[System.Runtime.InteropServices.ComVisible(true)]
public abstract class MD5 : HashAlgorithm
{
    protected MD5()
    {
        HashSizeValue = 128;
    }

    new static public MD5 Create()
    {
        return Create("System.Security.Cryptography.MD5");
    }

    new static public MD5 Create(String algName)
    {
        return (MD5)CryptoConfig.CreateFromName(algName);
    }
}



[System.Security.Permissions.HostProtection(MayLeakOnAbort = true)]
public sealed class MD5Cng : MD5
{
    private BCryptHashAlgorithm m_hashAlgorithm;

    public MD5Cng()
    {
        Contract.Ensures(m_hashAlgorithm != null);

        if (CryptoConfig.AllowOnlyFipsAlgorithms)
        {
            throw new InvalidOperationException(SR.GetString(SR.Cryptography_NonCompliantFIPSAlgorithm));
        }

        m_hashAlgorithm = new BCryptHashAlgorithm(CngAlgorithm.MD5, BCryptNative.ProviderName.MicrosoftPrimitiveProvider);
    }

    protected override void Dispose(bool disposing)
    {
        try
        {
            if (disposing)
            {
                m_hashAlgorithm.Dispose();
            }
        }
        finally
        {
            base.Dispose(disposing);
        }
    }
}