Class: Rex::Proto::Kerberos::Model::PreAuthData

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

Overview

This class provides a representation for Kerberos pre authenticated data

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

#typeInteger

Returns The padata type.

Returns:

  • (Integer)

    The padata type


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# File 'lib/rex/proto/kerberos/model/pre_auth_data.rb', line 13

def type
  @type
end

#valueString

Returns The padata value.

Returns:

  • (String)

    The padata value


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# File 'lib/rex/proto/kerberos/model/pre_auth_data.rb', line 16

def value
  @value
end

Instance Method Details

#decode(input) ⇒ self

Decodes a Rex::Proto::Kerberos::Model::PreAuthData

Parameters:

  • input (String, OpenSSL::ASN1::Sequence)

    the input to decode from

Returns:

  • (self)

    if decoding succeeds

Raises:


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# File 'lib/rex/proto/kerberos/model/pre_auth_data.rb', line 23

def decode(input)
  case input
  when String
    decode_string(input)
  when OpenSSL::ASN1::Sequence
    decode_asn1(input)
  else
    raise ::RuntimeError, 'Failed to decode PreAuthData, invalid input'
  end

  self
end

#encodeString

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

Returns:

  • (String)

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# File 'lib/rex/proto/kerberos/model/pre_auth_data.rb', line 39

def encode
  type_asn1 = OpenSSL::ASN1::ASN1Data.new([encode_type], 1, :CONTEXT_SPECIFIC)
  value_asn1 = OpenSSL::ASN1::ASN1Data.new([encode_value], 2, :CONTEXT_SPECIFIC)
  seq = OpenSSL::ASN1::Sequence.new([type_asn1, value_asn1])

  seq.to_der
end