Function shachain_get_secret

common/derive_basepoints.c:253–266

}

bool shachain_get_secret(const struct shachain *shachain,
			 u64 commit_num,
			 struct secret *preimage)
{
	struct sha256 sha;

	if (commit_num >= (1ULL << SHACHAIN_BITS))
		return false;

	if (!shachain_get_hash(shachain, shachain_index(commit_num), &sha))
		return false;
	CROSS_TYPE_ASSIGNMENT(preimage, &sha);
	return true;
}