CSipHasher Class Reference

General SipHash-2-4 implementation. More...

#include <siphash.h>

Collaboration diagram for CSipHasher:

Public Member Functions
	CSipHasher (uint64_t k0, uint64_t k1)
	Construct a SipHash calculator initialized with 128-bit key (k0, k1). More...
CSipHasher &	Write (uint64_t data)
	Hash a 64-bit integer worth of data. More...
CSipHasher &	Write (std::span< const unsigned char > data)
	Hash arbitrary bytes. More...
uint64_t	Finalize () const
	Compute the 64-bit SipHash-2-4 of the data written so far. More...

Private Attributes
SipHashState	m_state
uint64_t	m_tmp {0}
uint8_t	m_count {0}
	Only the low 8 bits of the input size matter. More...

Detailed Description

General SipHash-2-4 implementation.

Definition at line 26 of file siphash.h.

Constructor & Destructor Documentation

CSipHasher()

CSipHasher::CSipHasher	(	uint64_t	k0,
		uint64_t	k1
	)

Construct a SipHash calculator initialized with 128-bit key (k0, k1).

Definition at line 22 of file siphash.cpp.

Member Function Documentation

Finalize()

uint64_t CSipHasher::Finalize

(

)

const

Compute the 64-bit SipHash-2-4 of the data written so far.

The object remains untouched.

Definition at line 73 of file siphash.cpp.

Here is the caller graph for this function:

Write() [1/2]

CSipHasher & CSipHasher::Write

(

std::span< const unsigned char >

data

)

Hash arbitrary bytes.

Definition at line 44 of file siphash.cpp.

Write() [2/2]

CSipHasher & CSipHasher::Write

(

uint64_t

data

)

Hash a 64-bit integer worth of data.

It is treated as if this was the little-endian interpretation of 8 bytes. This function can only be used when a multiple of 8 bytes have been written so far.

Definition at line 24 of file siphash.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

Member Data Documentation

m_count

uint8_t CSipHasher::m_count {0}

private

Only the low 8 bits of the input size matter.

Definition at line 30 of file siphash.h.

m_state

SipHashState CSipHasher::m_state

private

Definition at line 28 of file siphash.h.

m_tmp

uint64_t CSipHasher::m_tmp {0}

private

Definition at line 29 of file siphash.h.

---

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

• src/crypto/siphash.h
• src/crypto/siphash.cpp