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

AD_IF_RELEVANT, AP_REQ, AS_REP, AS_REQ, AUTHENTICATOR, ERROR_CODES, KDC_OPTION_ALLOW_POST_DATE, KDC_OPTION_ENC_TKT_IN_SKEY, KDC_OPTION_FORWARDABLE, KDC_OPTION_FORWARDED, KDC_OPTION_POST_DATED, KDC_OPTION_PROXIABLE, KDC_OPTION_PROXY, KDC_OPTION_RENEW, KDC_OPTION_RENEWABLE, KDC_OPTION_RENEWABLE_OK, KDC_OPTION_RESERVED, KDC_OPTION_UNUSED_10, KDC_OPTION_UNUSED_11, KDC_OPTION_UNUSED_7, KDC_OPTION_UNUSED_9, KDC_OPTION_VALIDATE, KRB_ERROR, NT_PRINCIPAL, NT_SRV_HST, NT_SRV_INST, NT_SRV_XHST, NT_UID, NT_UNKNOWN, PA_ENC_TIMESTAMP, PA_PAC_REQUEST, PA_PW_SALT, PA_TGS_REQ, TGS_REP, TGS_REQ, TICKET, VERSION

Constants included from Crypto

Crypto::ENC_AS_RESPONSE, Crypto::ENC_KDC_REQUEST_BODY, Crypto::ENC_TGS_RESPONSE, Crypto::RC4_HMAC, Crypto::RSA_MD5

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Element

attr_accessor, attributes, #attributes, decode, #initialize

Methods included from Crypto::RsaMd5

#checksum_rsa_md5

Methods included from Crypto::Rc4Hmac

#decrypt_rc4_hmac, #encrypt_rc4_hmac

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



15
16
17
 
# File 'lib/rex/proto/kerberos/model/checksum.rb', line 15

def checksum
  @checksum
end

#type ⇒ Fixnum

Returns The algorithm used to generate the checksum.

Returns:

  • (Fixnum) —

    The algorithm used to generate the checksum



12
13
14
 
# File 'lib/rex/proto/kerberos/model/checksum.rb', line 12

def type
  @type
end

Instance Method Details

#decode(input) ⇒ Object

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

Raises:



20
21
22
 
# File 'lib/rex/proto/kerberos/model/checksum.rb', line 20

def decode(input)
  raise ::NotImplementedError, 'Checksum decoding not supported'
end

#encode ⇒ String

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

Returns:

  • (String) 


27
28
29
30
31
32
33
34
35
 
# File 'lib/rex/proto/kerberos/model/checksum.rb', line 27

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