anch::crypto::SHA2< O, B, W, R, I > Class Template Reference

SHA2 abstract class. More...

#include <sha2.hpp>

Inheritance diagram for anch::crypto::SHA2< O, B, W, R, I >:

Collaboration diagram for anch::crypto::SHA2< O, B, W, R, I >:

Classes
union	Chunk
struct	Context

Public Member Functions
	SHA2 ()
virtual	~SHA2 ()
virtual const std::array< uint8_t, O > &	digest () const override
Public Member Functions inherited from anch::crypto::Hash< O, B >
const std::array< uint8_t, O > &	digest (const std::string &data)
template<std::size_t N>
const std::array< uint8_t, O > &	digest (const std::array< uint8_t, N > &data)
const std::array< uint8_t, O > &	digest (const uint8_t *data, std::size_t len)
const std::array< uint8_t, O > &	digest (std::istream &stream)

Static Protected Member Functions
static constexpr W	shiftRight (uint8_t bits, W word)
static constexpr W	rotateLeft (uint8_t bits, W word)
static constexpr W	rotateRight (uint8_t bits, W word)

Protected Attributes
Context< I >	_context
Protected Attributes inherited from anch::crypto::Hash< O, B >
std::array< uint8_t, O > *	_digest

Additional Inherited Members
Static Public Member Functions inherited from anch::crypto::Hash< O, B >
static constexpr std::size_t	getOutputSize ()
static constexpr std::size_t	getBlockSize ()

Detailed Description

template<std::size_t O, std::size_t B, typename W, uint32_t R, const std::array< W, 8 > & I>
class anch::crypto::SHA2< O, B, W, R, I >

SHA2 abstract class.

SHA2 contains algorithms for SHA224/256/384/512.
The children have to define the translation array and the sigma transformation functions.
The template parameters are:

• O: the output size in byte
• B: the treatment block size in byte
• W: the word type (32 bits or 64 bits)
• R: the number of round for each chunk
• I: the initial state

SHA224/256/384/512 are implemented in this library.

Since

0.1

Author

Vincent Lachenal

Constructor & Destructor Documentation

SHA2()

template<std::size_t O, std::size_t B, typename W, uint32_t R, const std::array< W, 8 > & I>

anch::crypto::SHA2< O, B, W, R, I >::SHA2

(

)

SHA2 default constructor

~SHA2()

template<std::size_t O, std::size_t B, typename W, uint32_t R, const std::array< W, 8 > & I>

virtual anch::crypto::SHA2< O, B, W, R, I >::~SHA2 ( )

virtual

SHA2 destructor

Member Function Documentation

digest()

template<std::size_t O, std::size_t B, typename W, uint32_t R, const std::array< W, 8 > & I>

virtual const std::array< uint8_t, O > & anch::crypto::SHA2< O, B, W, R, I >::digest ( ) const

overridevirtual

Get the SHA2 hash result

Returns

the SHA2 hash result

Implements anch::crypto::Hash< O, B >.

rotateLeft()

template<std::size_t O, std::size_t B, typename W, uint32_t R, const std::array< W, 8 > & I>

constexpr W anch::crypto::SHA2< O, B, W, R, I >::rotateLeft ( uint8_t bits, W word )

inlinestaticconstexprprotected

Rotate n bits word from n bits to left

Parameters

bits	the number of bits to rotate
word	the n bits word to rotate

rotateRight()

template<std::size_t O, std::size_t B, typename W, uint32_t R, const std::array< W, 8 > & I>

constexpr W anch::crypto::SHA2< O, B, W, R, I >::rotateRight ( uint8_t bits, W word )

inlinestaticconstexprprotected

Rotate n bits word from n bits to right

Parameters

bits	the number of bits to rotate
word	the n bits word to rotate

shiftRight()

template<std::size_t O, std::size_t B, typename W, uint32_t R, const std::array< W, 8 > & I>

constexpr W anch::crypto::SHA2< O, B, W, R, I >::shiftRight ( uint8_t bits, W word )

inlinestaticconstexprprotected

Shift n bits word from n bits to right

Parameters

bits	the number of bits to shift
word	the n bits word to shift

Member Data Documentation

_context

template<std::size_t O, std::size_t B, typename W, uint32_t R, const std::array< W, 8 > & I>

Context<I> anch::crypto::SHA2< O, B, W, R, I >::_context

protected

SHA2 context

---

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

• anch-crypto/inc/crypto/hash/sha2.hpp