We are porting M2Crypto which is a python swig wrapper around OpenSSL. It
currently supports OpenSSL 0.9.8 and we are porting it to 1.1.0. The 1.1.0
branch is really cool (clean, elegant code), but there were a few
refactoring's that affected M2Crypto. Most were trivial getter/setter type
changes, but a few were in the are of getting rid of some ASN1 processing
(which happens to be our weakest point of understanding).
We're left with porting the final bit -- which is related to X509 cert
handling. Here's a sample use. The caller builds up the call with a the
following 'psuedo-sequence'. get_der() is the function we are working on
finishing.
X508* load_cert_bio(char* filename) {
BIO* bio = BIO_new_file(filename, "r");
return PEM_read_bio_X509(bio, NULL, NULL, NULL);
}
unsigned char* get_der(int* len_out) {
X509* cert = load_cert_bio("x509.pem");
X509* ca = load_cert_bio("ca.pem");
STACK_OF(X509)* stack = sk_x509_new_null();
sk_x509_push(stack, cert);
sk_x509_push(stack, ca);
return ASN1_seq_pack_X509(stack, i2d_X509, NULL, len_out);
}
The ASN1_seq_pack_X509 was a macro -- and has been removed.
> -----Original Message-----
> From: openssl-users [mailto:openssl-users-bounces at openssl.org] On
> Behalf Of Salz, Rich
> Sent: Thursday, July 21, 2016 4:35 AM
> To: openssl-users at openssl.org
> Subject: Re: [openssl-users] Help finding replacement for
> ASN1_seq_unpack_X509
>
> > Would it be acceptable to just iterate the stack elements, passing
> each X509
> > through i2d_X509 and appending the results -- would that generate
> valid
> > DER?
>
> Maybe. It depends on what the receiver is expecting. If it's willing
> to read a set of certs until it hits EOF (or equivalent) that's fine.
> But if you're sending a SEQUENCE OF certificates then you need to wrap
> it in an ASN1/DER container. For example, Netscape Cert Sequence
>
> Can you post a code snippet?
>
>
> --
> openssl-users mailing list
> To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users
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