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dgoulet pushed a commit to branch main in repository tor.

The following commit(s) were added to refs/heads/main by this push: new cf93d35209 crypto: Clarifying comment for the random hostname calculation cf93d35209 is described below

commit cf93d352095d252baf4cba07e51cb9a84ef8d9de Author: David Goulet dgoulet@torproject.org AuthorDate: Tue Mar 15 14:00:00 2022 -0400

crypto: Clarifying comment for the random hostname calculation

Closes #40520

Signed-off-by: David Goulet dgoulet@torproject.org --- src/lib/crypt_ops/crypto_rand.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/src/lib/crypt_ops/crypto_rand.c b/src/lib/crypt_ops/crypto_rand.c index 5bf3a65b3b..f39ee6c24f 100644 --- a/src/lib/crypt_ops/crypto_rand.c +++ b/src/lib/crypt_ops/crypto_rand.c @@ -568,6 +568,8 @@ crypto_random_hostname(int min_rand_len, int max_rand_len, const char *prefix, prefixlen = strlen(prefix); resultlen = prefixlen + strlen(suffix) + randlen + 16;

+ /* (x+(n-1))/n is an idiom for dividing x by n, rounding up to the nearest + * integer and thus why this construction. */ rand_bytes_len = ((randlen*5)+7)/8; if (rand_bytes_len % 5) rand_bytes_len += 5 - (rand_bytes_len%5);