fuzz: translate fuzz-hsm_encryption to fuzz-hsm_secret.
Copy corpora, since it's the same code paths. Thanks Claude! Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
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56
tests/fuzz/fuzz-hsm_secret.c
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56
tests/fuzz/fuzz-hsm_secret.c
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#include "config.h"
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#include <assert.h>
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#include <ccan/mem/mem.h>
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#include <common/hsm_secret.h>
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#include <common/setup.h>
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#include <stdlib.h>
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#include <tests/fuzz/libfuzz.h>
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void init(int *argc, char ***argv)
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{
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/* Don't run as a unit test under valgrind: too slow! */
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#ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
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if (getenv("VALGRIND") && strcmp(getenv("VALGRIND"), "1") == 0) {
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common_shutdown();
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exit(0);
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}
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#endif
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}
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void run(const uint8_t *data, size_t size)
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{
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/* 4294967295 is crypto_pwhash_argon2id_PASSWD_MAX. libfuzzer won't
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* generate inputs that large in practice, but hey. */
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if (size > 32 && size < 4294967295) {
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struct secret *hsm_secret, *encryption_key;
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char *passphrase;
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u8 encrypted_data[ENCRYPTED_HSM_SECRET_LEN];
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struct hsm_secret *decrypted_hsm;
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enum hsm_secret_error err;
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/* Take the first 32 bytes as the plaintext hsm_secret seed,
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* and the remaining ones as the passphrase. */
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hsm_secret = (struct secret *)tal_dup_arr(NULL, u8, data, 32, 0);
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passphrase = to_string(NULL, data + 32, size - 32);
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/* A valid seed, a valid passphrase. This should not fail. */
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encryption_key = get_encryption_key(NULL, passphrase);
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assert(encryption_key);
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/* Roundtrip: encrypt then decrypt */
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assert(encrypt_legacy_hsm_secret(encryption_key, hsm_secret, encrypted_data));
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decrypted_hsm = extract_hsm_secret(NULL, encrypted_data, ENCRYPTED_HSM_SECRET_LEN,
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passphrase, &err);
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assert(decrypted_hsm);
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assert(err == HSM_SECRET_OK);
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assert(decrypted_hsm->type == HSM_SECRET_ENCRYPTED);
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assert(memeq(hsm_secret->data, sizeof(hsm_secret->data),
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decrypted_hsm->secret_data, sizeof(hsm_secret->data)));
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tal_free(hsm_secret);
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tal_free(passphrase);
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tal_free(encryption_key);
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tal_free(decrypted_hsm);
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}
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}
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