Class: PacketGen::Header::IKE::CertReq

Inherits:
Cert show all
Defined in:
lib/packetgen/header/ike/certreq.rb

Overview

This class handles Certificate Request payloads.

A CertReq payload consists of the IKE generic payload header (see Payload) and some specific fields:

                     1                   2                   3
 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Next Payload  |C|  RESERVED   |         Payload Length        |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Cert Encoding |                                               |
+-+-+-+-+-+-+-+-+                                               +
|                                                               |
~                      Certification Authority                  ~
|                                                               |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

These specific fields are:

Create a CertReq payload

# Create a IKE packet with a CertReq payload
pkt = PacketGen.gen('IP').add('UDP').add('IKE').add('IKE::CertReq', encoding: 'X509_CERT_SIG')
pkt.ike_certreq.content.read OpenSSL::Digest::SHA1.digest(ca_cert.to_der)
pkt.calc_length

Author:

  • Sylvain Daubert

Since:

  • 2.0.0

Constant Summary collapse

PAYLOAD_TYPE =

Payload type number

Since:

  • 2.0.0

38

Constants inherited from Cert

PacketGen::Header::IKE::Cert::ENCODINGS

Instance Attribute Summary

Attributes inherited from Cert

#encoding

Attributes inherited from Payload

#content, #critical, #flags, #hreserved, #length, #next

Attributes inherited from Base

#packet

Instance Method Summary collapse

Methods inherited from Cert

#human_encoding, #initialize

Methods inherited from Payload

#base_read, #calc_length, #initialize, #read

Methods inherited from Base

#added_to_packet, bind, bind_header, calculate_and_set_length, #header_id, inherited, #initialize, #ip_header, known_headers, #ll_header, #method_name, #parse?, #protocol_name, protocol_name

Methods inherited from Types::Fields

#[], #[]=, #bits_on, #body=, define_bit_fields_on, define_field, define_field_after, define_field_before, delete_field, #fields, fields, #force_binary, inherited, #initialize, #is_optional?, #is_present?, #offset_of, #optional?, #optional_fields, #present?, #read, remove_bit_fields_on, remove_field, #sz, #to_h, #to_s, update_field

Constructor Details

This class inherits a constructor from PacketGen::Header::IKE::Cert

Instance Method Details

#human_content ⇒ String

Get list of 20-byte string (SHA-1 hashes)

Returns:

  • (String)

Since:

  • 2.0.0



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# File 'lib/packetgen/header/ike/certreq.rb', line 43

def human_content
  strs = []
  idx = 0
  while idx < content.size
    strs << content[idx, 20]
    idx += 20
  end
  strs.map(&:inspect).join(',')
end

#inspect ⇒ String

Returns:

  • (String)

Since:

  • 2.0.0



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# File 'lib/packetgen/header/ike/certreq.rb', line 54

def inspect
  super do |attr|
    next unless attr == :content
    str = Inspect.shift_level
    str << Inspect::FMT_ATTR % ['hashes', :content, human_content]
  end
end