hash_lib::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

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[SHA256::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();

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

• /home/hafez/Codes/Mine/humanoid_op_ros/src/nimbro/tools/hash_library/include/hash_library/sha256.h
• /home/hafez/Codes/Mine/humanoid_op_ros/src/nimbro/tools/hash_library/src/sha256.cpp