diff options
Diffstat (limited to 'avahi-core/domain-util.c')
-rw-r--r-- | avahi-core/domain-util.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/avahi-core/domain-util.c b/avahi-core/domain-util.c index 0d6ba14..7f562db 100644 --- a/avahi-core/domain-util.c +++ b/avahi-core/domain-util.c @@ -237,4 +237,18 @@ uint8_t avahi_count_canonical_labels(const char* input){ } return count; -}
\ No newline at end of file +} + +/* reference keytag generator from RFC 4034 */ +/* invoke with avahi_keytag(<rdata>, <rdlength>); */ +uint16_t avahi_keytag(uint8_t key[], uint16_t keysize){ + uint32_t ac; + int i; + + for (ac = 0, i = 0; i < keysize; ++i) + ac += (i & 1) ? key[i] : key[i] << 8; + + ac += (ac >> 16) & 0xFFFF; + + return ac & 0xFFFF; + } |