qa.c

加解密包

/*  
    Time-stamp: <QA.c - Sun 8/17/2003 13:40:24 by tony>
    
    Contact: Tony Song

    revision : 1.3.0 

    This sample code works on Solaris 2.6 and above, Linux, Win32
    Dependency: stringencrypt.h, lib_cstr_xxx.a
    
    purpose:  Stress test the usage of the following functions:
    int DJStrEncrypt(char *ClearText,char *EncryptedData);
    int DJStrDecrypt(char *EncryptedData,char *ClearText);
    int strEncrypt(char *passwd, char *ClearText,char *EncryptedData);
    int strDecrypt(char *passwd, char *EncryptedData,char *ClearText); 
*/

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include "stringencrypt.h"

void usage(void);

/*******************  Perform encrypt operation *******************/
int do_crypto (char *passwd, char *clearText) {
  char EncryptedData[1024];
  int ret;

  /* User program should calcuate the length
     of input clear text to avoid buffer overflow;
     for demo purpose only, we use fixed length*/

  ret = strEncrypt(passwd,clearText,EncryptedData);
  if ( ret != 0 ) {/* failed */
    printf("The string encrypt failed; Error #:[%d]!\n",ret);
    return -1;
  }
  
  printf("** ->>> [ %s %s %s ] <<<- **\n",clearText, passwd, EncryptedData);

/*******************  Perform decrypt operation *******************/
  ret = strDecrypt(passwd,EncryptedData,clearText);

  if ( ret != 0 ) {/* failed */
    printf("The string decrypt failed! #%d\n",ret);
    return -1;
  }
  printf("Decrypt result: %d -> %s\n\n",strlen(clearText),clearText);

  return 0;
}

main(int argc, char *argv[])
{
  char ClearText[1024];
  char passwd[]="this is a passphrse";
  int i,ret;
  
  if ( argc < 2 ) {
    usage();
    exit(0);
  }
  i=0;
  for (;;) {
    sprintf(ClearText,"%s_%d", argv[1],i++);
    ret=do_crypto(passwd, ClearText);
    if (ret != 0)
      return ret;

//    sleep(1);
  }
}

void usage(void)
{
  printf(" Usage:\n\n");
  printf(" example string         ;encrypt/decrypt the clear string.\n");
  return;
}