compute SHA256 hash More...

#include <sha256.h>

Public Types
enum	{ BlockSize = 512 / 8 , HashBytes = 32 }
	split into 64 byte blocks (=> 512 bits), hash is 32 bytes long More...

Public Member Functions
	SHA256 ()
	same as reset()

std::string	operator() (const void *data, size_t numBytes)
	compute SHA256 of a memory block

std::string	operator() (const std::string &text)
	compute SHA256 of a string, excluding final zero

void	add (const void *data, size_t numBytes)
	add arbitrary number of bytes

std::string	getHash ()
	return latest hash as 64 hex characters

void	getHash (unsigned char buffer[HashBytes])
	return latest hash as bytes

void	reset ()
	restart

Detailed Description

compute SHA256 hash

Usage: SHA256 sha256; std::string myHash = sha256("Hello World"); // std::string std::string myHash2 = sha256("How are you", 11); // arbitrary data, 11 bytes

or in a streaming fashion:

SHA256 sha256;
while (more data available)
  sha256.add(pointer to fresh data, number of new bytes);
std::string myHash3 = sha256.getHash();

Member Enumeration Documentation

◆ anonymous enum

anonymous enum

split into 64 byte blocks (=> 512 bits), hash is 32 bytes long

Enumerator
BlockSize
HashBytes

Constructor & Destructor Documentation

◆ SHA256()

SHA256::SHA256 ( )

same as reset()

Member Function Documentation

◆ add()

void SHA256::add	(	const void *	data,
		size_t	numBytes
	)

add arbitrary number of bytes

◆ getHash() [1/2]

std::string SHA256::getHash ( )

return latest hash as 64 hex characters

◆ getHash() [2/2]

void SHA256::getHash ( unsigned char buffer[HashBytes] )

return latest hash as bytes

◆ operator()() [1/2]

std::string SHA256::operator() ( const std::string & text )

compute SHA256 of a string, excluding final zero

◆ operator()() [2/2]

std::string SHA256::operator()	(	const void *	data,
		size_t	numBytes
	)

compute SHA256 of a memory block

◆ reset()

void SHA256::reset ( )

restart

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

Public Types

Public Member Functions