Class: EMV::APDU::CPS::C_MAC_APDU

Inherits:

CPS_APDU

Object
ISO7816::APDU::APDU
EMV_APDU
CPS_APDU
EMV::APDU::CPS::C_MAC_APDU

show all

Defined in:: lib/emv/cps_apdu.rb

Direct Known Subclasses

EXTERNAL_AUTHENTICATE, STORE_DATA

Instance Attribute Summary collapse

#c_mac ⇒ Object

calculate the c-mac according to 5.4.2.2.

Attributes inherited from CPS_APDU

#secure_context

Instance Method Summary collapse

#initialize(card, secure_context) ⇒ C_MAC_APDU constructor

A new instance of C_MAC_APDU.

Constructor Details

#initialize(card, secure_context) ⇒ `C_MAC_APDU`

Returns a new instance of C_MAC_APDU.



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# File 'lib/emv/cps_apdu.rb', line 177

def initialize card, secure_context
  super
end

Instance Attribute Details

#c_mac ⇒ `Object`

calculate the c-mac according to 5.4.2.2

# File 'lib/emv/cps_apdu.rb', line 182

def c_mac
  @c_mac ||=  secure_context.calculate_c_mac(self) 
  @c_mac  
end