1#!/usr/bin/env python3 2# SPDX-License-Identifier: GPL-2.0-or-later 3# 4# Script that generates lib/crypto/fips.h 5# 6# Copyright 2025 Google LLC 7 8import hashlib 9import hmac 10 11fips_test_data = b"fips test data\0\0" 12fips_test_key = b"fips test key\0\0\0" 13 14def print_static_u8_array_definition(name, value): 15 print('') 16 print(f'static const u8 {name}[] __initconst __maybe_unused = {{') 17 for i in range(0, len(value), 8): 18 line = '\t' + ''.join(f'0x{b:02x}, ' for b in value[i:i+8]) 19 print(f'{line.rstrip()}') 20 print('};') 21 22print('/* SPDX-License-Identifier: GPL-2.0-or-later */') 23print(f'/* This file was generated by: gen-fips-testvecs.py */') 24print() 25print('#include <linux/fips.h>') 26 27print_static_u8_array_definition("fips_test_data", fips_test_data) 28print_static_u8_array_definition("fips_test_key", fips_test_key) 29 30for alg in 'sha1', 'sha256', 'sha512': 31 ctx = hmac.new(fips_test_key, digestmod=alg) 32 ctx.update(fips_test_data) 33 print_static_u8_array_definition(f'fips_test_hmac_{alg}_value', ctx.digest()) 34 35print_static_u8_array_definition(f'fips_test_sha3_256_value', 36 hashlib.sha3_256(fips_test_data).digest()) 37