c语言加密文件

发布网友发布时间：2022-05-14 07:34

共3个回答

热心网友时间：2023-10-09 23:24

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

int main (int argc, char* argv[]) {
  int ch;

  if (argc != 4)
    return 1;

  FILE *fr = fopen (argv[1], "rb");
  if (fr == NULL)
    return 1;

  FILE *fw = fopen (argv[2],  "wb");
  if (fw == NULL)
    return 1;

  int i=0;

  while ((ch = fgetc(fr)) != EOF) {
    ch ^= argv[3][(i++)%strlen(argv[3])];
    fputc(ch, fw);
  }
  fclose(fr);
  fclose(fw);

  return 1;
}

$ gcc xx.c -o xx

$ ./xx x.bin encrypted.bin 1234567

$ ./xx encrypted.bin decrypted.bin 1234567

$ diff x.bin decrypted.bin

热心网友时间：2023-10-09 23:25

异或加密
http://hi.baidu.com/rankabc/item/b630c02bc6db833b087508ee

热心网友时间：2023-10-09 23:25

请加钱，要么去贴吧逛逛
http://tieba.baidu.com/f?kw=c%D3%EF%D1%D4&t=1