Date: Sat, 8 Sep 2012 20:06:06 +0530 From: Dhiru Kholia <dhiru.kholia@...il.com> To: john-dev@...ts.openwall.com Subject: Re: New formats: KRB5-18 and KRB5-23 On Sat, Sep 8, 2012 at 7:54 PM, magnum <john.magnum@...hmail.com> wrote: > On 09/08/2012 04:16 PM, Dhiru Kholia wrote: >> >> On Sat, Sep 8, 2012 at 6:17 PM, magnum <john.magnum@...hmail.com> wrote: >>> >>> That looks correct to me. Is there something similar in krb5-23? >>> >>> I tried this on OSX and now got this: >>> >>> Benchmarking: KRB5 aes256-cts-hmac-sha1-96 [32/64]... >>> Program received signal EXC_BAD_ACCESS, Could not access memory. >>> Reason: 13 at address: 0x0000000000000000 >>> 0x00000001000408ac in crypt_all (count=98745856) at krb5-18_fmt.c:198 >>> 198 crypt_out[index][i] = (key.contents[4 * i]) | >>> (gdb) bt >>> #0 0x00000001000408ac in crypt_all (count=98745856) at krb5-18_fmt.c:198 >>> #1 0x0000000100099b46 in fmt_self_test (format=0x1002dff20) at >>> formats.c:104 >>> Previous frame inner to this frame (gdb could not unwind past this frame) >>> >>> This is a non-OMP build. Note the count=98745856... I'm puzzled this only >>> happens on OSX. >> >> >> I built john (on OSX) with debugging on and generated a core dump. >> However, when I try to load the core in gdb the whole VM hangs. >> >> count=98745856, why is the count so high? This seems to be a bug! > > > Yeah, that has to be a buffer overrun, it should be 1 in non-OMP. I would > think the bug exist on Linux too but for various reasons it does not show > up. Valgrind under Linux does not complain over anything. And Valgrind does > not yet support OSX 10.8. ret = krb5_c_string_to_key_with_params(NULL, enctype, &string, &salt, NULL, &key); printf("ret %d\n", ret); printf("kl %d\n", key.length) Output: ret 0 kl 105235005 Key Length should be 16 but it is random large value every time I run the program. Something is wrong with the library call! > BTW that 'i' variable declaration must be moved in krb5-18 too. Already done. -- Cheers, Dhiru
Powered by blists - more mailing lists
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.