From 788f951b12e973af4d83d55ff70a8432f102d68e Mon Sep 17 00:00:00 2001
From: "Mike A." <git@mikealmel.ooo>
Date: Thu, 20 Nov 2025 20:06:12 +0100
Subject: [PATCH] fix: save cached keys to correct index

---
 findmy/accessory.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/findmy/accessory.py b/findmy/accessory.py
index 30ef467..4e79da4 100644
--- a/findmy/accessory.py
+++ b/findmy/accessory.py
@@ -396,7 +396,7 @@ class _AccessoryKeyGenerator(KeyGenerator[KeyPair]):
     # cache enough keys for an entire week.
     # every interval'th key is cached.
     _CACHE_SIZE = 4 * 24 * 7  # 4 keys / hour
-    _CACHE_INTERVAL = 10
+    _CACHE_INTERVAL = 1  # cache every key
 
     def __init__(
         self,
@@ -460,7 +460,7 @@ class _AccessoryKeyGenerator(KeyGenerator[KeyPair]):
                 cur_sk = self._sk_cache[cached_ind]
 
         # compute and update cache
-        for cur_ind in range(start_ind, ind):
+        for cur_ind in range(start_ind + 1, ind + 1):
             cur_sk = crypto.x963_kdf(cur_sk, b"update", 32)
 
             # insert intermediate result into cache and evict oldest entry if necessary