This also introduces a new macro siphash24_compress_byte() which is useful to add a single byte into the hash stream,
and ports one user over to it.
void siphash24_init(struct siphash *state, const uint8_t k[16]);
void siphash24_compress(const void *in, size_t inlen, struct siphash *state);
+#define siphash24_compress_byte(byte, state) siphash24_compress((const uint8_t[]) { (byte) }, 1, (state))
+
uint64_t siphash24_finalize(struct siphash *state);
uint64_t siphash24(const void *in, size_t inlen, const uint8_t k[16]);
LIST_FOREACH(items, j, rr->txt.items) {
siphash24_compress(j->data, j->length, state);
- /* Add an extra NUL byte, so that "a" followed by "b" doesn't result in the same hash as "ab" followed by "". */
- siphash24_compress((const uint8_t[]) { 0 }, 1, state);
+ /* Add an extra NUL byte, so that "a" followed by "b" doesn't result in the same hash as "ab"
+ * followed by "". */
+ siphash24_compress_byte(0, state);
}
break;
}
ascii_strlower_n(label, r);
siphash24_compress(label, r, state);
+ siphash24_compress_byte(0, state); /* make sure foobar and foo.bar result in different hashes */
}
/* enforce that all names are terminated by the empty label */