>On Wed 25/07/12 2:16 PM , Jakob Bohm jb-open...@wisemo.com sent: >On 7/25/2012 3:01 PM, Florian Rüchel wrote: >> Hi, >> >> I have a tool which calls RAND_bytes() for a length of 16 bytes while >> using the CAPI engine and having set it to be used for all purposes. >> If I run it in my Visual Studio Debugger in executes perfectly, but if >> run from within a command shell, it hangs on this statement (I >> localized it with printf statements). >> Now I am wondering what might be causing this problem.
>> I cannot reproduce this problem, i.e. creating a small sample program >> works perfectly. And since I cannot even debug it, I can't limit or >> search for the problem. >> >> Any ideas why this might be caused and how I can track it down? >> > >Try putting printf() statements inside RAND_bytes() to narrow it >further (I assume you compile OpenSSL yourself). Further to Jakob's response - I believe that one of the things RAND_bytes may do is traverse heaps to gather additional entropy. I would ensure that you have no heap corruption too - use gflags and/or other tools to validate your process too. That could possibly explain why the sample program will not reproduce the issue. Carl ______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager majord...@openssl.org
