public extern static bool EVP_DigestFinal_ex(SafeDigestContextHandle ctx, IntPtr md, out uint s);
public extern static bool EVP_DigestUpdate(SafeDigestContextHandle ctx, IntPtr d, uint cnt);
public extern static bool EVP_DigestInit_ex(SafeDigestContextHandle ctx, SafeDigestHandle type, IntPtr impl);
public static extern bool EVP_DigestUpdate(SafeDigestContextHandle ctx, IntPtr d, uint cnt);
public static extern bool EVP_DigestInit_ex(SafeDigestContextHandle ctx, SafeDigestHandle type, IntPtr impl);
public static extern bool EVP_DigestFinal_ex(SafeDigestContextHandle ctx, IntPtr md, out uint s);