Closed
Description
#to_der doesn't seem to be inconsistent encoding context-specific ASN1 data. This is a gist which hopefully demonstrate the issue:
require "openssl"
int = OpenSSL::ASN1::Integer.new(1)
data = OpenSSL::ASN1::ASN1Data.new([int], 1, :CONTEXT_SPECIFIC)
puts "original asn:"
puts data.inspect
der = data.to_der
puts "der is: #{der.unpack("H*")}"
asn = OpenSSL::ASN1.decode der
puts "asn:"
puts asn.inspect Here is the output against jruby 9.1.6.0 (latest stable as of now):
original asn:
#<OpenSSL::ASN1::ASN1Data:0x7cc55834 @tag=1, @tag_class=:CONTEXT_SPECIFIC, @value=[#OpenSSL::ASN1::Integer:0x37a54f5e @tag=2, @tag_class=:UNIVERSAL, @tagging=nil, @value=1, infinite_length=false>]>
der is: ["810101"]
asn:
#<OpenSSL::ASN1::ASN1Data:0x434a314e @tag=1, @tag_class=:CONTEXT_SPECIFIC, @value=[#OpenSSL::ASN1::OctetString:0x4811fb9e @tag=4, @tag_class=:UNIVERSAL, @tagging=nil, value="\x01", @infinite_length=false>]>
which shows that the original asn can't be encoded and decoded into the same structure.
Here's the output with MRI 2.1:
original asn:
#<OpenSSL::ASN1::ASN1Data:0x007fb5b8e8dcb0 @tag=1, @value=[#OpenSSL::ASN1::Integer:0x007fb5b8e8dd00 @tag=2, @value=1, @tagging=nil, @tag_class=:UNIVERSAL, @infinite_length=false>], @tag_class=:CONTEXT_SPECIFIC, infinite_length=false>
der is: ["a103020101"]
asn:
#<OpenSSL::ASN1::ASN1Data:0x007fb5b8e8d288 @tag=1, @value=[#OpenSSL::ASN1::Integer:0x007fb5b8e8d2b0 @tag=2, @value=#<OpenSSL::BN:0x007fb5b8e8d2d8>, @tagging=nil, @tag_class=:UNIVERSAL, @infinite_length=false>], tag_class=:CONTEXT_SPECIFIC, @infinite_length=false>
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