Function dump_commitments_infos

tools/hsmtool.c:301–342

}

static int dump_commitments_infos(struct node_id *node_id, u64 channel_id,
                                  u64 depth, char *hsm_secret_path)
{
	struct sha256 shaseed;
	struct secret hsm_secret, channel_seed, per_commitment_secret;
	struct pubkey per_commitment_point;
	char *passwd, *err;
	int exit_code = 0;

	secp256k1_ctx = secp256k1_context_create(SECP256K1_CONTEXT_VERIFY
	                                         | SECP256K1_CONTEXT_SIGN);

	/* This checks the file existence, too. */
	if (hsm_secret_is_encrypted(hsm_secret_path)) {
		printf("Enter hsm_secret password:\n");
		fflush(stdout);
		passwd = read_stdin_pass_with_exit_code(&err, &exit_code);
		if (!passwd)
			errx(exit_code, "%s", err);
		get_encrypted_hsm_secret(&hsm_secret, hsm_secret_path, passwd);
		free(passwd);
	} else
		get_hsm_secret(&hsm_secret, hsm_secret_path);

	get_channel_seed(&channel_seed, node_id, channel_id, &hsm_secret);

	derive_shaseed(&channel_seed, &shaseed);
	printf("shaseed: %s\n", type_to_string(tmpctx, struct sha256, &shaseed));
	for (u64 i = 0; i < depth; i++) {
		if (!per_commit_secret(&shaseed, &per_commitment_secret, i))
			errx(ERROR_KEYDERIV, "Could not derive secret #%"PRIu64, i);
		printf("commit secret #%"PRIu64": %s\n",
		       i, tal_hexstr(tmpctx, per_commitment_secret.data,
		                     sizeof(per_commitment_secret.data)));
		if (!per_commit_point(&shaseed, &per_commitment_point, i))
			errx(ERROR_KEYDERIV, "Could not derive point #%"PRIu64, i);
		printf("commit point #%"PRIu64": %s\n",
		       i, type_to_string(tmpctx, struct pubkey, &per_commitment_point));
	}

	return 0;
}

/* In case of an unilateral close from the remote side while we suffered a
 * loss of data, this tries to recover the private key from the `to_remote`