static EVP_PKEY *hwcrhk_load_privkey(ENGINE *eng, const char *key_id,
	UI_METHOD *ui_method, void *callback_data)
	{
#ifndef OPENSSL_NO_RSA
	RSA *rtmp = NULL;
#endif
	EVP_PKEY *res = NULL;
#ifndef OPENSSL_NO_RSA
	HWCryptoHook_MPI e, n;
	HWCryptoHook_RSAKeyHandle *hptr;
#endif
#if !defined(OPENSSL_NO_RSA)
	char tempbuf[1024];
	HWCryptoHook_ErrMsgBuf rmsg;
#endif
	HWCryptoHook_PassphraseContext ppctx;

#if !defined(OPENSSL_NO_RSA)
	rmsg.buf = tempbuf;
	rmsg.size = sizeof(tempbuf);
#endif

	if(!hwcrhk_context)
		{
		HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PRIVKEY,
			HWCRHK_R_NOT_INITIALISED);
		goto err;
		}
#ifndef OPENSSL_NO_RSA
	hptr = OPENSSL_malloc(sizeof(HWCryptoHook_RSAKeyHandle));
	if (!hptr)
		{
		HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PRIVKEY,
			ERR_R_MALLOC_FAILURE);
		goto err;
		}
        ppctx.ui_method = ui_method;
	ppctx.callback_data = callback_data;
	if (p_hwcrhk_RSALoadKey(hwcrhk_context, key_id, hptr,
		&rmsg, &ppctx))
		{
		HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PRIVKEY,
			HWCRHK_R_CHIL_ERROR);
		ERR_add_error_data(1,rmsg.buf);
		goto err;
		}
	if (!*hptr)
		{
		HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PRIVKEY,
			HWCRHK_R_NO_KEY);
		goto err;
		}
#endif
#ifndef OPENSSL_NO_RSA
	rtmp = RSA_new_method(eng);
	RSA_set_ex_data(rtmp, hndidx_rsa, (char *)hptr);
	rtmp->e = BN_new();
	rtmp->n = BN_new();
	rtmp->flags |= RSA_FLAG_EXT_PKEY;
	MPI2BN(rtmp->e, e);
	MPI2BN(rtmp->n, n);
	if (p_hwcrhk_RSAGetPublicKey(*hptr, &n, &e, &rmsg)
		!= HWCRYPTOHOOK_ERROR_MPISIZE)
		{
		HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PUBKEY,HWCRHK_R_CHIL_ERROR);
		ERR_add_error_data(1,rmsg.buf);
		goto err;
		}

	bn_expand2(rtmp->e, e.size/sizeof(BN_ULONG));
	bn_expand2(rtmp->n, n.size/sizeof(BN_ULONG));
	MPI2BN(rtmp->e, e);
	MPI2BN(rtmp->n, n);

	if (p_hwcrhk_RSAGetPublicKey(*hptr, &n, &e, &rmsg))
		{
		HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PUBKEY,
			HWCRHK_R_CHIL_ERROR);
		ERR_add_error_data(1,rmsg.buf);
		goto err;
		}
	rtmp->e->top = e.size / sizeof(BN_ULONG);
	bn_fix_top(rtmp->e);
	rtmp->n->top = n.size / sizeof(BN_ULONG);
	bn_fix_top(rtmp->n);

	res = EVP_PKEY_new();
	EVP_PKEY_assign_RSA(res, rtmp);
#endif

        if (!res)
                HWCRHKerr(HWCRHK_F_HWCRHK_LOAD_PUBKEY,
                        HWCRHK_R_PRIVATE_KEY_ALGORITHMS_DISABLED);

	return res;
 err:
	if (res)
		EVP_PKEY_free(res);
#ifndef OPENSSL_NO_RSA
	if (rtmp)
		RSA_free(rtmp);
#endif
	return NULL;
	}