keepass::hmac_istreambuf Class Reference

Input streambuf that reads HMAC-verified, block-structured data (KDBX4 format). More...

#include <stream.hh>

Inheritance diagram for keepass::hmac_istreambuf:

Public Member Functions
	hmac_istreambuf (std::istream &src, const uint8_t *hmac_key)
	Constructs an HMAC-verifying input streambuf.
bool	BudgetExceeded () const
	Returns true if a resource budget was exceeded while reading.
	hmac_istreambuf (std::istream &src, const uint8_t *hmac_key, const detail::ResourceLimits &limits)
	Constructs an HMAC-verifying input streambuf with resource limits.
	~hmac_istreambuf ()
	Zeroizes the stored master HMAC key.
int	underflow () override
	Reads and HMAC-verifies the next block when the get area is exhausted.

Detailed Description

Input streambuf that reads HMAC-verified, block-structured data (KDBX4 format).

Each block is preceded by a 32-byte HMAC-SHA256 computed over the block index, block size, and block data. An empty block (size 0) signals end-of-stream.

Constructor & Destructor Documentation

hmac_istreambuf() [1/2]

keepass::hmac_istreambuf::hmac_istreambuf ( std::istream &  src, const uint8_t *  hmac_key  )

inline

Constructs an HMAC-verifying input streambuf.

Parameters

src	The input stream to read HMAC-protected blocks from.
hmac_key	The 512-bit master HMAC key.

hmac_istreambuf() [2/2]

keepass::hmac_istreambuf::hmac_istreambuf ( std::istream &  src, const uint8_t *  hmac_key, const detail::ResourceLimits &  limits  )

inline

Constructs an HMAC-verifying input streambuf with resource limits.

Parameters

src	The input stream to read HMAC-protected blocks from.
hmac_key	The 512-bit master HMAC key.
limits	The resource budgets enforced while reading.

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The documentation for this class was generated from the following file:

• stream.hh