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OpenSSL::ASN1::BitString#to_der fails to respect unused_bits #323

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segiddins opened this issue Dec 3, 2024 · 0 comments

segiddins commented Dec 3, 2024

#!/usr/bin/env ruby

puts RUBY_ENGINE

require "rubygems"
require "openssl"
require "base64"

asn = "\x00\x04".b
asn.prepend "\x03#{asn.bytesize.chr}"
pp asn
bs = OpenSSL::ASN1.decode(asn)
pp bs
pp bs.to_der

raise unless bs.to_der == asn

on mri

"\x03\x02\x00\x04"
#<OpenSSL::ASN1::BitString:0x000000011eac7758
 @indefinite_length=false,
 @tag=3,
 @tag_class=:UNIVERSAL,
 @tagging=nil,
 @unused_bits=0,
 @value="\x04">
"\x03\x02\x00\x04"

on jruby

"\u0003\u0002\u0000\u0004"
#<OpenSSL::ASN1::BitString:0xdbda472
 @indefinite_length=false,
 @tag=3,
 @tag_class=:UNIVERSAL,
 @tagging=nil,
 @unused_bits=0,
 @value="\x04">
"\x03\x02\x02\x04"
RuntimeError: No current exception
  <main> at Untitled 3.rb:16

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