pin_guard.h File Reference

PIN storage (salted SHA-256) with constant-time check and escalating lockout (pure C++20, no heap). More...

#include "prov_types.h"

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Classes
struct	prov::PinResult
class	prov::PinGuard
	Guards the PIN. The 5th consecutive wrong PIN starts a lockout of min(60 s * 2^k, 3600 s), k = lockouts since the last success; the failure count then resets. Lockout state lives in RAM only. More...

Enumerations
enum class	PinCheck { Ok , Wrong , LockedOut , NotSet }

Detailed Description

PIN storage (salted SHA-256) with constant-time check and escalating lockout (pure C++20, no heap).