PuTTY bug puttygen-zero-div

This is a mirror. The primary PuTTY web site can be found here.

summary: Occasional PuTTYgen division-by-zero errors
class: bug: This is clearly an actual problem we want fixed.
difficulty: taxing: Needs external things we don't have (standards, users etc)
priority: medium: This should be fixed one day.
present-in: 0.53 0.53b
fixed-in: 2003-06-29 (0.54) (0.55) (0.56) (0.57) (0.58) (0.59) (0.60)

We are getting very occasional reports of integer division by zero errors in PuTTYgen.

15345.43775.42454.321823@chiark.greenend.org.uk
2001-11-13? (maybe already resolved)
3CA268CA.7258.2CA7836@localhost
SSH-1 1024, Win95, version 0.52 (assuming that, as we were told, `Teilungsfehler' is a division error)
000001c2bb51$77afcbf0$6401a8c0@lynn
SSH-2 RSA 2048, version ???

1645070571.20030227150247@inbox.ru
SSH-2 RSA 1024, version 0.53b
At last, we have a stack trace:

PUTTYGEN! 00408160()  sshbn.obj:_internal_mod
PUTTYGEN! 004086fa()  sshbn.obj:_bigdivmod
PUTTYGEN! 00408ecd()  sshbn.obj:_modinv
PUTTYGEN! 0041040f()  sshrsag.obj:_rsa_generate
PUTTYGEN! 004051c2()  puttygen.obj:_generate_rsa_key_thread@4
KERNEL32! 77e887dd()

SGT, 2003-06-28: Believed fixed. Thankfully, the bug was not in the bignum implementation (although I found a small bug in there too in the course of fixing it!) but in the much simpler prime-generation code that called it.

Audit trail for this bug.

If you want to comment on this web site, see the Feedback page.
(last revision of this bug record was at 2004-11-16 15:27:00 +0000)

mirror powered by triplemind.com - Web directory, Ferienwohnung Berlin, Last Minute Reisen, Language schools in Spain, Pension Dresden Hotel, Markisen Sonnenschutz Plissees, Kreuzfahrten, Routenplaner, Sofort online, Fliegen, Ferienwohnung Harz, Newsletter Software, Ferienhäuser, weltweit Sprachreisen, Webdesign Homepage erstellen, Wellness Bayern Bewerbung Geld verdienen