SHA256 Class Reference

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();

Definition at line 41 of file sha256.h.

Member Enumeration Documentation

anonymous enum

anonymous enum

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

Definition at line 45 of file sha256.h.

Constructor & Destructor Documentation

SHA256()

SHA256::SHA256

(

)

same as reset()

Definition at line 20 of file sha256.cpp.

Member Function Documentation

add()

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

add arbitrary number of bytes

Definition at line 260 of file sha256.cpp.

getHash()

std::string SHA256::getHash

(

)

return latest hash as 64 hex characters

Definition at line 370 of file sha256.cpp.

operator()() [1/2]

std::string SHA256::operator()

(

const std::string &

text

)

compute SHA256 of a string, excluding final zero

Definition at line 425 of file sha256.cpp.

operator()() [2/2]

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

compute SHA256 of a memory block

Definition at line 416 of file sha256.cpp.

reset()

void SHA256::reset

(

)

restart

Definition at line 27 of file sha256.cpp.

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

• hash/include/sha256.h
• hash/src/sha256.cpp