
Security Issues in SoC Communication 363
age area increment by 4.5, the maximum speed is also reduced by 0.58, and
the power consumption is increased by 4 to 6.
Security Concerns about Masked Logic Styles
As previously seen when discussing WDDL, there are two main factors that
can be exploited by DPA attacks [123, 116]:
1. Leakage caused by the difference of loading capacitance between two
complemetary logic gates in a MDPL gate.
2. Leakage caused by the difference of delay time between the input signals
of MDPL gates (early propagation effect, [60]).
As MDPL uses the same operator for both parts of the compound gate,
it can improve in principle the leak ...