crypto_sign_keypair(public_key, secret_key, 0);

	*out_key_length = secret_key_length;
	return(secret_key);
}

static int nano_tcl_generate_keypair(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
	unsigned char secret_key[crypto_sign_SECRETKEYBYTES], public_key[crypto_sign_PUBLICKEYBYTES];
	unsigned char *seed, *buffer, buffer_s[NANO_SECRET_KEY_LENGTH + 4];
	long seed_index;
	int seed_length, buffer_length;
	int csk_ret, tglfo_ret;

	if (objc != 1 && objc != 3) {
		Tcl_WrongNumArgs(interp, 1, objv, "?seed index?");

		return(TCL_ERROR);
	}

	if (objc == 1) {
		csk_ret = crypto_sign_keypair(public_key, secret_key, 1);
		if (csk_ret != 0) {
			Tcl_SetResult(interp, "Internal error", NULL);

			return(TCL_ERROR);
		}
	} else {
		seed = Tcl_GetByteArrayFromObj(objv[1], &seed_length);
		if (seed_length != NANO_SECRET_KEY_LENGTH) {
			Tcl_SetResult(interp, "Seed is not the right size", NULL);

			return(TCL_ERROR);
		}

		tglfo_ret = Tcl_GetLongFromObj(interp, objv[2], &seed_index);
		if (tglfo_ret != TCL_OK) {
			return(tglfo_ret);
		}

		if (seed_index > 0xffffffffL) {
			Tcl_SetResult(interp, "Seed exceed maximum value", NULL);

			return(TCL_ERROR);
		}

		buffer_length = sizeof(buffer_s);
		buffer = buffer_s;

		memcpy(buffer, seed, seed_length);
		buffer += seed_length;
		buffer[0] = (seed_index >> 24) & 0xff;
		buffer[1] = (seed_index >> 16) & 0xff;
		buffer[2] = (seed_index >> 8) & 0xff;
		buffer[3] = seed_index & 0xff;
		buffer -= seed_length;

		blake2b(secret_key, NANO_SECRET_KEY_LENGTH, buffer, buffer_length, NULL, 0);
	}

	Tcl_SetObjResult(interp, Tcl_NewByteArrayObj(secret_key, NANO_SECRET_KEY_LENGTH));

	return(TCL_OK);

	/* NOTREACH */
	clientData = clientData;
}

static int nano_tcl_generate_seed(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
	unsigned char seed[NANO_SECRET_KEY_LENGTH];
	int seed_length;

	if (objc != 1) {
		Tcl_WrongNumArgs(interp, 1, objv, "");

		return(TCL_ERROR);
	}

	seed_length = sizeof(seed);


	randombytes(seed, seed_length);



	Tcl_SetObjResult(interp, Tcl_NewByteArrayObj(seed, seed_length));

	return(TCL_OK);

	/* NOTREACH */
	clientData = clientData;
}

	if (!tclInitStubs_ret) {
		return(TCL_ERROR);
	}
#endif

	Tcl_CreateObjCommand(interp, "::nano::internal::selfTest", nano_tcl_self_test, NULL, NULL);
	Tcl_CreateObjCommand(interp, "::nano::internal::generateKey", nano_tcl_generate_keypair, NULL, NULL);
	Tcl_CreateObjCommand(interp, "::nano::internal::generateSeed", nano_tcl_generate_seed, NULL, NULL);
	Tcl_CreateObjCommand(interp, "::nano::internal::publicKey", nano_tcl_secret_key_to_public_key, NULL, NULL);
	Tcl_CreateObjCommand(interp, "::nano::internal::signDetached", nano_tcl_sign_detached, NULL, NULL);
	Tcl_CreateObjCommand(interp, "::nano::internal::verifyDetached", nano_tcl_verify_detached, NULL, NULL);
	Tcl_CreateObjCommand(interp, "::nano::internal::hashData", nano_tcl_hash_data, NULL, NULL);

	if (interp) {
		te_ret = Tcl_Eval(interp, nanoInitScript);
		if (te_ret != TCL_OK) {
			return(te_ret);
		}
	}

	return(TCL_OK);
}