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Module: OpenSSL::ASN1::TaggedASN1Data

Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Included In:
BitString, Boolean, Constructive, Enumerated, Integer, ObjectId, Primitive
Defined in: ext/openssl/lib/openssl/asn1.rb

Instance Attribute Summary

  • #tagging rw

    May be used as a hint for encoding a value either implicitly or explicitly by setting it either to :IMPLICIT or to :EXPLICIT.

Instance Method Summary

Instance Attribute Details

#tagging (rw)

May be used as a hint for encoding a value either implicitly or explicitly by setting it either to :IMPLICIT or to :EXPLICIT. tagging is not set when a ASN.1 structure is parsed using OpenSSL::ASN1.decode.

[ GitHub ] 

  


# File 'ext/openssl/lib/openssl/asn1.rb', line 83



attr_accessor :tagging


  







Instance Method Details



  

    OpenSSL::ASN1::Primitive.new(value [, tag, tagging, tag_class ])  ⇒ Primitive   



  

    

value: is mandatory.



tag: optional, may be specified for tagged values. If no tag is specified, the UNIVERSAL tag corresponding to the Primitive sub-class is used by default.



tagging: may be used as an encoding hint to encode a value either explicitly or implicitly, see ::OpenSSL::ASN1 for possible values.



tag_class: if tag and tagging are nil then this is set to :UNIVERSAL by default. If either tag or tagging are set then :CONTEXT_SPECIFIC is used as the default. For possible values please cf. ::OpenSSL::ASN1.



Example



int = OpenSSL::ASN1::Integer.new(42)
zero_tagged_int = OpenSSL::ASN1::Integer.new(42, 0, :IMPLICIT)
private_explicit_zero_tagged_int = OpenSSL::ASN1::Integer.new(42, 0, :EXPLICIT, :PRIVATE)


  





  
Raises:





  [ GitHub ]


  

  


# File 'ext/openssl/lib/openssl/asn1.rb', line 107



def initialize(value, tag = nil, tagging = nil, tag_class = nil)
  tag ||= ASN1.take_default_tag(self.class)

  raise ASN1Error, "must specify tag number" unless tag

  if tagging
    raise ASN1Error, "invalid tagging method" unless tagging.is_a?(Symbol)
  end

  tag_class ||= tagging ? :CONTEXT_SPECIFIC : :UNIVERSAL

  raise ASN1Error, "invalid tag class" unless tag_class.is_a?(Symbol)

  @tagging = tagging
  super(value ,tag, tag_class)
end