I'm pretty sure I can find it on my own. Not saying that I won't thankfully receive links to interesting information, mind you! That being said, there is currently no support (no deserializer) for PKIpath in OpenSSL. (BTW, since it's a SEQUENCE OF, the outermost object in such a DER file amounts to only one, even though it then contains a series of certificates, so that's not really part of the discussion here) Cheers, Richard On Fri, 22 May 2020 09:41:53 +0200, Kyle Hamilton wrote: > > There is a format that puts all DER certificates into a single DER-formatted structure. It is > called PKIpath, and it's defined as `SEQUENCE OF Certificate`. The problem with it is that its > order was standardized by X.509 2001 TC1 to begin with the root and continue to the leaf, which is > backwards from how TLS present the certificate chain. (Java's JCA/JCE were specified before that > corrigendum issued, and its PKIpath validation goes by the convention in use at the time to put > the leaf certificate first, like pem-certificate-chain.) > > I don't have my computer open to get you the PKIX-WG RFCs which define it and specify the same > order as the TC1, but if you're curious you can chase them down by looking up IANA's list of media > types and searching for "application/pkix-pkipath". > > -Kyle H > > On Fri, May 22, 2020, 00:55 Richard Levitte <levitte@xxxxxxxxxxx> wrote: > > Generally speaking, OpenSSL hasn't exactly encouraged multiple objects > in one DER file. While it's theoretically possible to have several > objects in such a file file, there is code in OpenSSL where that's > simply not considered. For example, this snippet in the man-page > 'X509_LOOKUP_file' is quite clear: > > Functions X509_load_cert_file and X509_load_crl_file can load both PEM > and DER formats depending of type value. Because DER format cannot > contain more than one certificate or CRL object (while PEM can contain > several concatenated PEM objects) X509_load_cert_crl_file with > FILETYPE_ASN1 is equivalent to X509_load_cert_file. > > The functions described there are also used by functions like > X509_LOOKUP_load_file(). > > Note that this may change going forward, as OSSL_STORE is gradually > entering the scene, and does provide a bit better flexibility in this > regard. > (We have recently added an X509_LOOKUP variant that uses OSSL_STORE > for its object retrieval, see the section 'OSSL_STORE Method' in > doc/man3/X509_LOOKUP_hash_dir.pod in recent OpenSSL source, such as > the alpha releases) > > Cheers, > Richard > > On Fri, 22 May 2020 00:53:39 +0200, > paul h. roubekas wrote: > > I am a complete newbie to this list. > > > > I wanted to search the archive but found no such page. > > > > I have a requirement to convert all certs in a *.p12 file to a *.der file for use in the > curl > > command. > > > > The first hop to a *.pem file has all the certs. > > > > But the second hop only has one cert. The I read the docs but found nothing that looked > even > > close. > > > > Hop 1 > > > > openssl pkcs12 -chain -in trust.p12 -out ww_temp.pem -password {redacted} > > > > Hop 2 > > > > openssl x509 -outform der -in ww_temp.pem -out ww_temp.der > > > > The Question) How do I get all the certs in the .der file? > > > > > -- > Richard Levitte levitte@xxxxxxxxxxx > OpenSSL Project http://www.openssl.org/~levitte/ > > -- Richard Levitte levitte@xxxxxxxxxxx OpenSSL Project http://www.openssl.org/~levitte/