class Rex::Proto::Kerberos::Model::Checksum

This class provides a representation of a Kerberos Checksum definition.

Attributes

checksum[RW]

@!attribute checksum

@return [String] The checksum itself
type[RW]

@!attribute type

@return [Fixnum] The algorithm used to generate the checksum

Public Instance Methods

decode(input) click to toggle source

Rex::Proto::Kerberos::Model::Checksum decoding isn't supported

@raise [NotImplementedError]

# File lib/rex/proto/kerberos/model/checksum.rb, line 19
def decode(input)
  raise ::NotImplementedError, 'Checksum decoding not supported'
end
encode() click to toggle source

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

@return [String]

# File lib/rex/proto/kerberos/model/checksum.rb, line 26
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

Private Instance Methods

encode_checksum() click to toggle source

Encodes the checksum field

@return [OpenSSL::ASN1::OctetString]

# File lib/rex/proto/kerberos/model/checksum.rb, line 51
def encode_checksum
  OpenSSL::ASN1::OctetString.new(checksum)
end
encode_type() click to toggle source

Encodes the type field

@return [OpenSSL::ASN1::Integer]

# File lib/rex/proto/kerberos/model/checksum.rb, line 41
def encode_type
  bn = OpenSSL::BN.new(type.to_s)
  int = OpenSSL::ASN1::Integer.new(bn)

  int
end