general/misc.cc File Reference

#include "misc.h"
#include "gcrypt.h"
#include <sstream>
#include "log.h"

Defines
#define	DEBUG_ROUTINE   "misc"
Functions
std::string	hash (std::string str)
	Calculate a sha1 hash value from a string. The result is a hexadecimal 40 tokens number.
std::string	subs (std::string s, size_t from, size_t len)
std::string	derived (std::string session, int sessnr)
	Find a derived hash from a session string that protects to real session string from observers.
Variables
const char	hex_tbl [] = "0123456789abcdef"

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Define Documentation

#define DEBUG_ROUTINE   "misc"

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Function Documentation

std::string derived	(	std::string	session,
		int	sessnr
	)

Find a derived hash from a session string that protects to real session string from observers.

Parameters:

session	session string in need of protection
sessnr	number that increases every communication session

std::string hash

(

std::string

str

)

Calculate a sha1 hash value from a string. The result is a hexadecimal 40 tokens number.

Parameters:

str	Base string from where the hash value is calculated

std::string subs	(	std::string	s,
		size_t	from,
		size_t	len
	)

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Variable Documentation

const char hex_tbl[] = "0123456789abcdef"

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