| /* |
| * NIAP FPT_TST_EXT.1 cryptographic self-tests. |
| * |
| * Copyright (c) 2019 Google LLC. |
| */ |
| |
| #include <crypto/hash.h> |
| #include <crypto/skcipher.h> |
| #include <linux/crypto.h> |
| #include <linux/module.h> |
| #include <linux/reboot.h> |
| #include <linux/scatterlist.h> |
| |
| 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"); |