mirror of
https://github.com/wolfSSL/wolfssl.git
synced 2026-07-09 07:10:54 +02:00
Anthony Hu
00d0b09401
wc_lms_treehash_init() writes leaf node hashes into the leaf cache
using an absolute index (i * hash_len), but the cache is only
max_cb entries starting from leaf->idx. When leaf->idx > 0 (which
occurs when wc_LmsKey_Reload is called after signing more than
max_cb times), the write goes past the end of the cache buffer.
Fix by using the relative offset (i - leaf->idx) * hash_len instead.
Added unit tests (test_lms.c):
- test_wc_LmsKey_sign_verify: basic sign/verify sanity check
- test_wc_LmsKey_reload_cache: (TDD) reproduces the overflow by
signing 33 times then reloading the key
Before creating any new configure files (.conf) read the CONF_FILES_README.md