Class: Rex::Proto::Kerberos::Model::Checksum

Inherits:
Element
  • Object
show all
Defined in:
lib/rex/proto/kerberos/model/checksum.rb

Overview

This class provides a representation of a Kerberos Checksum definition.

Constant Summary

Constants included from Rex::Proto::Kerberos::Model

AP_REP, AP_REQ, AS_REP, AS_REQ, AUTHENTICATOR, ENC_AP_REP_PART, ENC_KRB_CRED_PART, KRB_CRED, KRB_ERROR, TGS_REP, TGS_REQ, TICKET, VERSION

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Element

attr_accessor, attributes, #attributes, decode, #initialize

Constructor Details

This class inherits a constructor from Rex::Proto::Kerberos::Model::Element

Instance Attribute Details

#checksum ⇒ String

Returns The checksum itself.

Returns:

  • (String) —

    The checksum itself



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# File 'lib/rex/proto/kerberos/model/checksum.rb', line 15

def checksum
  @checksum
end

#type ⇒ Integer

Returns The algorithm used to generate the checksum.

Returns:

  • (Integer) —

    The algorithm used to generate the checksum



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# File 'lib/rex/proto/kerberos/model/checksum.rb', line 12

def type
  @type
end

Instance Method Details

#decode(input) ⇒ self

Decodes the Rex::Proto::Kerberos::Model::Checksum from an input

Parameters:

  • input (String, OpenSSL::ASN1::ASN1Data) —

    the input to decode from

Returns:

  • (self) —

    if decoding succeeds

Raises:



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# File 'lib/rex/proto/kerberos/model/checksum.rb', line 22

def decode(input)
  case input
  when String
    decode_string(input)
  when OpenSSL::ASN1::ASN1Data
    decode_asn1(input)
  else
    raise ::Rex::Proto::Kerberos::Model::Error::KerberosDecodingError, 'Failed to decode Checksum, invalid input'
  end

  self
end

#encode ⇒ String

Encodes a Rex::Proto::Kerberos::Model::Checksum into an ASN.1 String

Returns:

  • (String) 


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# File 'lib/rex/proto/kerberos/model/checksum.rb', line 38

def encode
  elems = []
  elems << OpenSSL::ASN1::ASN1Data.new([encode_type], 0, :CONTEXT_SPECIFIC)
  elems << OpenSSL::ASN1::ASN1Data.new([encode_checksum], 1, :CONTEXT_SPECIFIC)

  seq = OpenSSL::ASN1::Sequence.new(elems)

  seq.to_der
end