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Full Discussion: How to hide from UNIX strings - obfuscate or hide a literal or constant?
Top Forums Programming How to hide from UNIX strings - obfuscate or hide a literal or constant? Post 302892081 by newbie_01 on Monday 10th of March 2014 06:24:42 PM
Old 03-10-2014
Quote:
Originally Posted by Perderabo
How about...
Code:
char array[20];

array[2] = 'l';
array[4] = 'o';
array[5] = (char)0;
array[1] = 'e';
array[3] = 'l';
array[0] = 'h';

Do that just immediately before you use it. Wipe it out immediately after use. Do you mean do a array[]="" after I do the print?
Hi Perderabo,

Thanks as usual to be the first responder.

I am more or less using the one that you suggested. What do you mean by wipe it out immediately?

BTW, looking at one of your reply to Reading password and echo * character | Unix Linux Forums | Shell Programming and Scripting. If you don't mind me asking, if is possible for read to read a defined variable or does it always require a user intervention to provide an input?

Below is what I end up using.

Code:
#include <stdio.h>

// - UPPER CASE starts at 65
// - LOWER CASE starts at 97

int count;
char uc[26];
char lc[26];

char a, b, c, d, e, f;
char g, h, i, j, k, l;
char m, n, o, p, q, r;
char s, t, u, v, w, x;
char y, z;

//char word[100];
//char *word;

main()
{
   /* Print the numbers 1 through 20 */

   for ( count = 1; count <= 26; count++ )
   {
          // printf("%d :: %c :: %c \n", count, count+64, count+96);
          uc[count] = (char)count+64;
          lc[count] = (char)count+96;
   }

   // printf("\n ------------------------------------------ \n");

   // d=lc[4];
   // b=lc[2];
   // g=lc[7];
   // u=lc[21];
   // r=lc[18];
   // char word[]={ d, b, t, e, s, t };

   char word[]={ lc[4] , lc[2] , lc[20] , lc[5] , lc[19] , lc[20]  };

   //printf("%c%c%c%c%c%c",d,b,g,u,r,u);
   //printf("%c \n",u[26]);
   //printf("%c \n",l[26]);

   //#printf("%s",word);
   puts(word);
   return 0;
}

 

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LEARN ABOUT DEBIAN

shishi_key_from_string

shishi_key_from_string(3)					      shishi						 shishi_key_from_string(3)

NAME

       shishi_key_from_string - API function

SYNOPSIS

       #include <shishi.h>

       int  shishi_key_from_string(Shishi  *  handle,  int32_t type, const char * password, size_t passwordlen, const char * salt, size_t saltlen,
       const char * parameter, Shishi_key ** outkey);

ARGUMENTS

       Shishi * handle
		   Shishi library handle create by shishi_init().

       int32_t type
		   type of key.

       const char * password
		   input array containing password.

       size_t passwordlen
		   length of input array containing password.

       const char * salt
		   input array containing salt.

       size_t saltlen
		   length of input array containing salt.

       const char * parameter
		   input array with opaque encryption type specific information.

       Shishi_key ** outkey
		   pointer to structure that will hold newly created key information

DESCRIPTION

       Create a new Key information structure, and set the key type and key value using shishi_string_to_key().  KEY contains  a  newly  allocated
       structure only if this function is successful.

RETURN VALUE

       Returns SHISHI_OK iff successful.

REPORTING BUGS

       Report bugs to <bug-shishi@gnu.org>.

COPYRIGHT

       Copyright (C) 2002-2010 Simon Josefsson.
       Copying	and  distribution  of  this file, with or without modification, are permitted in any medium without royalty provided the copyright
       notice and this notice are preserved.

SEE ALSO

       The full documentation for shishi is maintained as a Texinfo manual.  If the info and shishi programs are properly installed at your  site,
       the command

	      info shishi

       should give you access to the complete manual.

shishi								       1.0.1						 shishi_key_from_string(3)
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