ohh sorry...
in the last example:
but, if i use:
{
const EVP_CIPHER *c;
c = EVP_get_cipherbyname("aes-128-cbc");
EVP_EncryptInit(&ctx, c, key, NULL);
}
doesn't work
(segmentation fault)
mark
> hi!
>
> if i use:
> {
> EVP_EncryptInit(&ctx, EVP_aes_128_cbc(), key, NULL);
> }
> is work
>
> if i use:
> {
> const EVP_CIPHER *c;
> c = EVP_aes_128_cbc();
> EVP_EncryptInit(&ctx, c, key, NULL);
> }
> is work
>
> but, if i use:
> {
> const EVP_CIPHER *c;
> c = EVP_get_cipherbyname("aes-128-cbc");
> EVP_EncryptInit(&ctx, EVP_aes_128_cbc(), key, NULL);
> }
> doesn't work
> (segmentation fault)
>
> mark
>
>
> On 3/29/06, Dr. Stephen Henson <[EMAIL PROTECTED]> wrote:
> > On Wed, Mar 29, 2006, Nagy Zoltn Mrk wrote:
> >
> > > Dear all
> > >
> > > I would like to create a data structure in C.
> > > Below you can see what I have created, but it doesn't work correctly.
> > > My question is: why doesn't initialised EVP_aes_128_cbc() into cipher?
> > >
> > > #define ORANGE 0xffa500
> > >
> > > struct ciphers_name
> > > {
> > > unsigned char *name;
> > > unsigned char *description;
> > > const EVP_CIPHER *cipher;
> > > unsigned int color;
> > > };
> > >
> > >
> > > struct ciphers_name ciphers[] =
> > > {
> > > { "aes128cbc","AES 128bit CBC",EVP_aes_128_cbc(),ORANGE}
> > > };
> > >
> >
> > That wont work in many cases because you are trying to initialize the
> > structure with the return value from a function.
> >
> > The initialization is done at compile time but that return value is only
> > available at runtime.
> >
> > You have a couple of options. One is to change that definition to a function
> > pointer which you set to EVP_aes_128_cbc note *NOT* EVP_aes_128_cbc(). Then
> > at
> > runtime you call that function pointer to get the EVP_CIPHER.
> >
> > The alternative is to include something which you can lookup to get that
> > cipher. An example would be NID_aes_128_cbc which you can then lookup using
> > EVP_getcipherbynid().
> >
> > Steve.
> > --
> > Dr Stephen N. Henson. Email, S/MIME and PGP keys: see homepage
> > OpenSSL project core developer and freelance consultant.
> > Funding needed! Details on homepage.
> > Homepage: http://www.drh-consultancy.demon.co.uk
> > ______________________________________________________________________
> > OpenSSL Project http://www.openssl.org
> > User Support Mailing List openssl-users@openssl.org
> > Automated List Manager [EMAIL PROTECTED]
> >
>
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