OpenSSL::PKey::RSA missing #public_to_der

[segiddins]

#!/usr/bin/env ruby

require 'rubygems'
require 'openssl'

b64 = "MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE2G2Y+2tabdTV5BcGiBIx0a9fAFwrkBbmLSGtks4L3qX6yYY0zufBnhC8Ur/iy55GhWP/9A/bY2LhC30M9+RYtw=="

key = OpenSSL::PKey.read(b64.unpack1("m"))

pp OpenSSL::Digest::SHA256.hexdigest(key.public_to_der)

passes on MRI, fails on jruby (JRuby-OpenSSL 0.14.5):

NoMethodError: undefined method `public_to_der' for #<OpenSSL::PKey::RSA:0x5a1c7619>
  <main> at Untitled 2.rb:10

[segiddins]

So is OpenSSL::PKey::EC

[headius]

High priority here. @kares If you can get to this soon it would be great, but otherwise I will try to do it during my holiday hacking this month.

[kares]

High priority, in terms of what?
The report seem quite old and there's not much new context since.

[headius]

@kares This is needed by the new secure gem publisher that @segiddins is working on, and has already led to one JRuby gem not getting published correctly. @segiddins is trying to work around it in sigstore/sigstore-ruby#192.

[kares]

Thanks, I somehow missed the issues linked to this bug.
I will try adding the to_der variants, should be fairly easy...

[kares]

pushed 7dbac3c and d692376 what's left is PKey::EC

[kares]

final part (PKey::EC) at 6a6ce2e