From: "rhenium (Kazuki Yamaguchi)" Date: 2022-09-11T07:13:10+00:00 Subject: [ruby-core:109885] [Ruby master Feature#12354] PKey::EC Can't output public key pem when private key exists Issue #12354 has been updated by rhenium (Kazuki Yamaguchi). Status changed from Assigned to Closed openssl v2.2 added OpenSSL::PKey::PKey#public_to_pem and #public_to_der for this purpose. https://github.com/ruby/openssl/pull/297 Ruby 3.0 includes v2.2 by default. ---------------------------------------- Feature #12354: PKey::EC Can't output public key pem when private key exists https://bugs.ruby-lang.org/issues/12354#change-99126 * Author: armour (Armour Comms) * Status: Closed * Priority: Normal * Assignee: rhenium (Kazuki Yamaguchi) ---------------------------------------- Steps to reproduce: Create EC key: ```ruby key = OpenSSL::PKey::EC.new("prime256v1") key.generate_key ``` Try and output in pem format ```ruby key.to_pem #Outputs private key pem key.public_key.to_pem #Error ``` In order to output a public key pem, a new key object must be created with no private key: ```ruby key_pub = OpenSSL::PKey::EC.new(key.group) key_pub.public_key = key.public_key ``` Output pem ```ruby key_pub.to_pem #Success! ``` From viewing the source, http://rxr.whitequark.org/mri/source/ext/openssl/ossl_pkey_ec.c#466 it seems that if the key is private there is no way to output a public key for that key object -- https://bugs.ruby-lang.org/ Unsubscribe: