diff options
Diffstat (limited to 'src/tools/encoding.c')
| -rw-r--r-- | src/tools/encoding.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/tools/encoding.c b/src/tools/encoding.c index 3d5e94b..c407b57 100644 --- a/src/tools/encoding.c +++ b/src/tools/encoding.c @@ -102,10 +102,10 @@ bool key_from_hex(uint8_t key[static WG_KEY_LEN], const char *hex) bool key_is_zero(const uint8_t key[static WG_KEY_LEN]) { - uint8_t acc = 0; + volatile uint8_t acc = 0; for (unsigned int i = 0; i < WG_KEY_LEN; ++i) { acc |= key[i]; __asm__ ("" : "=r" (acc) : "0" (acc)); } - return acc == 0; + return 1 & ((acc - 1) >> 8); } |