Commit cf93d352 authored by David Goulet's avatar David Goulet 🐼
Browse files

crypto: Clarifying comment for the random hostname calculation 



Closes #40520

Signed-off-by: David Goulet's avatarDavid Goulet <dgoulet@torproject.org>
parent 9841e717

src/lib/crypt_ops/crypto_rand.c

+2 −0
Original line number Diff line number Diff line
@@ -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);