[ruby-core:76230] [Ruby trunk Bug#12162][Third Party's Issue] OpenSSL::PKCS7 seems to create broken objects (nested asn.1 error)

Issue #12162 has been updated by Kazuki Yamaguchi.

Status changed from Assigned to Third Party's Issue

The direct reason is that PKCS7#to_s returns a broken PEM. It looks like the behavior was changed in OpenSSL 1.0.1i:

https://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=d70c0be4c1e33985a79d691786db72661fdfd057

But since the PKCS7 object is actually incomplete at that time you call PKCS7#to_s, I'm not sure whether if this is a bug or not.

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Bug #12162: OpenSSL::PKCS7 seems to create broken objects (nested asn.1 error)
https://bugs.ruby-lang.org/issues/12162#change-59462

* Author: JarosナＢw Gテウrny
* Status: Third Party's Issue
* Priority: Normal
* Assignee: openssl
* ruby -v: ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-darwin15]
* Backport: 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN
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When trying to read previously created OpenSSL::PKCS7 object, it fails with 'nested asn.1 error'. Seems like object is broken.


Steps to reproduce:

1. Generate x.509 certificate (either from CLI or in Ruby) and store it in OpenSSL::X509::Certificate object.
2. Create new OpenSSL::PKCS7 object, set the 'type' attribute to ':signed'
3. Add OpenSSL::X509::Certificate object to OpenSSL::PKCS7 object with #add_certificate() method
4. Try to read back the object created in step '3' with: OpenSSL::PKCS7.new(pkcs7_obj.to_s)


Result:

ArgumentError: Could not parse the PKCS7: nested asn1 error
from (pry):8:in `initialize'


Expected result:
OpenSSL::PKCS7.new() should be able to read from previously created PKCS7 object (casted to string with #to_s method)


The session is attached to this ticket. It can be also found online: https://gist.github.com/jnahorny/9ccbb186c9f7c20c9f3e

note 1: I was able to reproduce this problem with ruby 2.2.x and latest head (2.4.0). On Linux too.
note 2: This code used to work when ruby was linked to openssl v 0.9.8.

---Files--------------------------------
gistfile1.txt (4.35 KB)


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