Author: cem Date: Tue Jun 18 18:50:58 2019 New Revision: 349176 URL: https://svnweb.freebsd.org/changeset/base/349176
Log: random(4): Fix a regression in short AES mode reads In r349154, random device reads of size < 16 bytes (AES block size) were accidentally broken to loop forever. Correct the loop condition for small reads. Reported by: pho Reviewed by: delphij Approved by: secteam(delphij) Differential Revision: https://reviews.freebsd.org/D20686 Modified: head/sys/dev/random/fortuna.c Modified: head/sys/dev/random/fortuna.c ============================================================================== --- head/sys/dev/random/fortuna.c Tue Jun 18 17:51:30 2019 (r349175) +++ head/sys/dev/random/fortuna.c Tue Jun 18 18:50:58 2019 (r349176) @@ -489,7 +489,7 @@ random_fortuna_genbytes(uint8_t *buf, size_t bytecount if (!random_chachamode) chunk_size = rounddown(chunk_size, RANDOM_BLOCKSIZE); - while (bytecount >= chunk_size) { + while (bytecount >= chunk_size && chunk_size > 0) { randomdev_keystream(p_key, p_counter, buf, chunk_size); buf += chunk_size; _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
