thanks for all help.
i write :
cert = BIO_new(BIO_s_mem ( ) );
BIO_write(cert , data , len ) ;
but core dumped at the same location ,
and the two have the same errors.
my platform is sun sparc , gcc 2.8.1 .
Dr Stephen Henson wrote:
> gang cao wrote:
> >
> > hi all,
> > in x509.c , load_cert(char * file , int format)
> > read certificate from a file .
> > i need read a certificate from a buf ( unsigned char * ),
> > a function like
> > static X509 *load_cert(unsigned char *data , int len , int format )
> > len is the length of data.
> > so i change the following :
> >
> > if ((cert=BIO_new(BIO_s_file())) == NULL)
> > {
> > ERR_print_errors(bio_err);
> > goto end;
> > }
> >
> > if (file == NULL)
> > BIO_set_fp(cert,stdin,BIO_NOCLOSE);
> > else
> > {
> > if (BIO_read_filename(cert,file) <= 0)
> > {
> > perror(file);
> > goto end;
> > }
> > }
> >
> > to :
> >
> > if ((cert=BIO_new(BIO_f_buffer)) == NULL)
> > {
> > ERR_print_errors(bio_err);
> > goto end;
> > }
> > if( BIO_set_buffer_read_data ( cert ,data , len ) <=0 )
> > {
> > ERR_print_errors(bio_err);
> > goto end;
> > }
> > compile is ok ,but core dumped .
> > error is :
> > any one can help me?
> >
>
> Yes. A buffer bio buffers a read from another bio next in the chain
> which doesn't exist in this case. You could I suppose stuff a null bio
> on the end but a buffer bio isn't really what you want.
>
> If you are going to use a BIO for this then a memory bio is more suited.
> Just make the BIO with:
>
> mem = BIO_new(BIO_s_mem());
>
> and write the data with
> BIO_write(mem, data, datalen);
>
> then you can pass this memory BIO to the PEM_read stuff. If its a DER
> encoded certificate in the buffer then see my other message about using
> i2d_X509() directly.
>
> Steve.
> --
> Dr Stephen N. Henson. http://www.drh-consultancy.demon.co.uk/
> Personal Email: [EMAIL PROTECTED]
> Senior crypto engineer, Celo Communications: http://www.celocom.com/
> Core developer of the OpenSSL project: http://www.openssl.org/
> Business Email: [EMAIL PROTECTED] PGP key: via homepage.
>
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