/* * NIAP FPT_TST_EXT.1 cryptographic self-tests. * * Copyright (c) 2019 Google LLC. */ #include #include #include #include #include #include static const u8 niap_message[] __initconst = { 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; static const u8 niap_hmac_sha512_key[] __initconst = { 0x84, 0xe1, 0xb6, 0x59, 0x69, 0x4f, 0x5e, 0xa5, 0x07, 0xcc, 0x74, 0x06, 0xb8, 0xec, 0x53, 0x4a }; static const u8 niap_hmac_sha512_output[] __initconst = { 0x72, 0x74, 0x73, 0x5e, 0xa5, 0x1d, 0x1c, 0xba, 0x62, 0xa7, 0x93, 0xbb, 0xa9, 0xc3, 0x97, 0x86, 0x9d, 0x46, 0x26, 0xe7, 0x1b, 0x8c, 0x73, 0xf7, 0x1a, 0xcb, 0xae, 0xda, 0x32, 0x77, 0x2d, 0x9b, 0x73, 0xa1, 0xb1, 0x21, 0x16, 0x00, 0x38, 0xc8, 0x61, 0x9c, 0xb9, 0x7f, 0x3c, 0x3b, 0x16, 0xe1, 0xb8, 0x1d, 0x34, 0x8c, 0x82, 0xdc, 0xe6, 0xe3, 0xc6, 0xaa, 0x4c, 0x10, 0x54, 0x3c, 0x09, 0xf4 }; static const u8 niap_sha256_output[] __initconst = { 0xa0, 0x90, 0x1c, 0xb8, 0xb4, 0x22, 0xa3, 0xef, 0x7d, 0x34, 0x45, 0x2d, 0x73, 0x32, 0x6c, 0x1e, 0x09, 0x2d, 0x9e, 0x82, 0xee, 0x3f, 0x32, 0xd3, 0xe8, 0x64, 0x30, 0x50, 0xb0, 0x2e, 0x7d, 0xf4 }; static const u8 niap_cbc_aes128_encrypt_key[] __initconst = { 0x6f, 0x1e, 0x97, 0x12, 0xcf, 0x82, 0x40, 0x79, 0x2c, 0x4f, 0x8a, 0x82, 0x78, 0x2a, 0x8c, 0xdd }; static const u8 niap_cbc_aes128_decrypt_key[] __initconst = { 0x02, 0x52, 0x38, 0x55, 0xa6, 0x88, 0x51, 0xe2, 0xd0, 0x16, 0xaa, 0x56, 0x95, 0x64, 0x33, 0x2d }; static const u8 niap_cbc_aes128_iv[] __initconst = { 0x0c, 0xa7, 0x8b, 0xd2, 0x55, 0x73, 0x85, 0xef, 0xe2, 0x1b, 0x96, 0xb1, 0x0f, 0x14, 0xec, 0xf0 }; static const u8 niap_cbc_aes128_encrypt_output[] __initconst = { 0xd1, 0x4f, 0xe0, 0x79, 0xa1, 0x68, 0xe4, 0xa4, 0x51, 0x96, 0xf6, 0x10, 0x5d, 0x6a, 0x63, 0xa0 }; static const u8 niap_cbc_aes128_decrypt_output[] __initconst = { 0x59, 0x39, 0x9b, 0xb7, 0x7d, 0xef, 0x86, 0x7b, 0x0d, 0xe0, 0x77, 0x90, 0x17, 0x7c, 0x2a, 0xdb }; struct niap_test { const char *alg; const u8 *key; unsigned int key_length; const u8 *iv; unsigned int iv_length; const u8 *input; unsigned int in_length; const u8 *output; unsigned int out_length; bool encrypt; int (*func)(const struct niap_test *); }; static inline void dump(const u8 *buf, unsigned int length) { print_hex_dump(KERN_ERR, "", DUMP_PREFIX_NONE, 16, 1, buf, length, false); } static int __init niap_test_cipher(const struct niap_test *test) { int err = 0; DECLARE_CRYPTO_WAIT(wait); struct crypto_skcipher *tfm = NULL; struct skcipher_request *req = NULL; struct scatterlist src; struct scatterlist dst; u8 *input = NULL; u8 *iv = NULL; u8 *output = NULL; input = kmemdup(test->input, test->in_length, GFP_KERNEL); iv = kmemdup(test->iv, test->iv_length, GFP_KERNEL); output = kzalloc(test->out_length, GFP_KERNEL); if (!input || !iv || !output) { err = -ENOMEM; goto out; } tfm = crypto_alloc_skcipher(test->alg, 0, 0); if (IS_ERR(tfm)) { err = PTR_ERR(tfm); tfm = NULL; goto out; } err = crypto_skcipher_setkey(tfm, test->key, test->key_length); if (err) goto out; req = skcipher_request_alloc(tfm, GFP_KERNEL); if (!req) { err = -ENOMEM; goto out; } sg_init_one(&src, input, test->in_length); sg_init_one(&dst, output, test->out_length); skcipher_request_set_tfm(req, tfm); skcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_SLEEP | CRYPTO_TFM_REQ_MAY_BACKLOG, crypto_req_done, &wait); skcipher_request_set_crypt(req, &src, &dst, test->in_length, iv); if (test->encrypt) err = crypto_wait_req(crypto_skcipher_encrypt(req), &wait); else err = crypto_wait_req(crypto_skcipher_decrypt(req), &wait); if (err) goto out; if (memcmp(output, test->output, test->out_length)) { pr_err("niap_test_cipher: invalid result:\n"); dump(output, test->out_length); err = -EBADMSG; } out: if (err) pr_err("niap_test_cipher: %s %s failed: %d\n", test->alg, test->encrypt ? "encryption" : "decryption", err); else pr_info("niap_test_cipher: %s %s passed\n", test->alg, test->encrypt ? "encryption" : "decryption"); skcipher_request_free(req); crypto_free_skcipher(tfm); kfree(input); kfree(iv); kfree(output); return err; } static int __init niap_test_hash(const struct niap_test *test) { int err = 0; struct crypto_shash *tfm = NULL; struct shash_desc *desc = NULL; u8 *output = NULL; output = kzalloc(test->out_length, GFP_KERNEL); if (!output) { err = -ENOMEM; goto out; } tfm = crypto_alloc_shash(test->alg, 0, 0); if (IS_ERR(tfm)) { err = PTR_ERR(tfm); tfm = NULL; goto out; } if (test->key) { err = crypto_shash_setkey(tfm, test->key, test->key_length); if (err) goto out; } desc = kzalloc(sizeof(*desc) + crypto_shash_descsize(tfm), GFP_KERNEL); if (!desc) { err = -ENOMEM; goto out; } desc->tfm = tfm; desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP; err = crypto_shash_digest(desc, test->input, test->in_length, output); if (err) goto out; if (memcmp(output, test->output, test->out_length)) { pr_err("niap_test_hash: invalid result:\n"); dump(output, test->out_length); err = -EBADMSG; } out: if (err) pr_err("niap_test_hash: %s failed: %d\n", test->alg, err); else pr_info("niap_test_hash: %s passed\n", test->alg); crypto_free_shash(tfm); kfree(desc); kfree(output); return err; } static const struct niap_test niap_tests[] __initconst = { { .alg = "hmac(sha512)", .key = niap_hmac_sha512_key, .key_length = sizeof(niap_hmac_sha512_key), .input = niap_message, .in_length = sizeof(niap_message), .output = niap_hmac_sha512_output, .out_length = sizeof(niap_hmac_sha512_output), .func = niap_test_hash, }, { .alg = "sha256", .key = NULL, .input = niap_message, .in_length = sizeof(niap_message), .output = niap_sha256_output, .out_length = sizeof(niap_sha256_output), .func = niap_test_hash, }, { .alg = "cbc(aes)", .key = niap_cbc_aes128_encrypt_key, .key_length = sizeof(niap_cbc_aes128_encrypt_key), .input = niap_message, .in_length = sizeof(niap_message), .iv = niap_cbc_aes128_iv, .iv_length = sizeof(niap_cbc_aes128_iv), .output = niap_cbc_aes128_encrypt_output, .out_length = sizeof(niap_cbc_aes128_encrypt_output), .encrypt = true, .func = niap_test_cipher, }, { .alg = "cbc(aes)", .key = niap_cbc_aes128_decrypt_key, .key_length = sizeof(niap_cbc_aes128_decrypt_key), .input = niap_message, .in_length = sizeof(niap_message), .iv = niap_cbc_aes128_iv, .iv_length = sizeof(niap_cbc_aes128_iv), .output = niap_cbc_aes128_decrypt_output, .out_length = sizeof(niap_cbc_aes128_decrypt_output), .encrypt = false, .func = niap_test_cipher, } }; static int __init niap_init(void) { int i; for (i = 0; i < ARRAY_SIZE(niap_tests); i++) { const struct niap_test *test = &niap_tests[i]; if (test->func(test)) { pr_crit("niap: self-test failed; rebooting\n"); kernel_restart("bootloader"); } } return 0; } late_initcall(niap_init); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("NIAP FPT_TST_EXT.1 cryptographic self-tests");