AcceptSecurityContext AcquireCredentialsHandleA AcquireCredentialsHandleW ApplyControlToken DeleteSecurityContext EnumerateSecurityPackagesA EnumerateSecurityPackagesW FreeContextBuffer FreeCredentialsHandle ImpersonateSecurityContext InitSecurityInterfaceA InitSecurityInterfaceW InitializeSecurityContextA InitializeSecurityContextW MakeSignature QueryContextAttributesA QueryContextAttributesW QuerySecurityPackageInfoA QuerySecurityPackageInfoW RevertSecurityContext SealMessage UnsealMessage VerifySignature