Newbie question - gcry_sexp_build Seg. Fault

António Pinto pinto.antonio at
Tue Nov 9 12:46:26 CET 2004

Hello again,

Problem solved, I recoded the app from scratch and I don't have the
problem anymore.
The problem was probably related to the fact that I was using (badly)
some symmetic encryption gcrypt routines in another part of the

Thanks for the help.

On Fri, 05 Nov 2004 15:45:05 +0100, Werner Koch <wk at> wrote:
> Hi,
> if you want us to help you you should give us more detailed
> information.  Printing the values used in the function before the SEGV
> as well as full backtrace is essential (in gdb enter "bt full").
> On Fri, 5 Nov 2004 11:59:14 +0000, António Pinto said:
> >> data=msgid+leaderid;
> >> gcry_sexp_build (&plain, NULL, "(data (flags raw) (value %d))", data);
> >> gcry_pk_sign(&sign, plain, sKey);
> Signing a plain integer in raw mode is in most cases not a good idea.
> Depending on the circumstances it is vulnerable to several real world
> attacks.
>   Werner

António Pinto

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