1 文本数据加密
2
3 #define _CRT_SECURE_NO_WARNINGS
4 #include <stdio.h>
5 #include <stdlib.h>
6
7 void run(char *str)
8 {
9 char *p = str;
10 while (*p != '\0')
11 {
12 if (*p == '\r' || *p == '\n')
13 {
14 *p = '\0';
15 }
16 p++;
17 }
18 int length = strlen(str);
19 for (int i = 0; i < length; i++)
20 {
21 str[i] ^= 3;
22 }
23
24
25 }
26
27 void main()
28 {
29 FILE *pfr = fopen("E:\\XXXX.txt", "r");
30 FILE *pfw = fopen("E:\\XX.txt", "w");
31 while (!feof(pfr))
32 {
33 char str[1024] = { 0 };
34 fgets(str, 1023, pfr);
35 run(str);
36 fputs(str, pfw);
37 fputs("\n", pfw);
38 }
39
40
41
42 fclose(pfr);
43 fclose(pfw);
44
45 system("pause");
46 }
1 查询 加密后的数据
2
3 #define _CRT_SECURE_NO_WARNINGS
4 #include <stdio.h>
5 #include <stdlib.h>
6 #include <string.h>
7
8 void run(char *str)
9 { // 处理文本文件"\r\n"
10 char *p = str;
11 while (*p != '\0')
12 {
13 if (*p == '\r' || *p == '\n')
14 {
15 *p = '\0';
16 }
17 p++;
18 }
19 int length = strlen(str);
20 for (int i = 0; i < length; i++)
21 {
22 str[i] ^= 3;
23 }
24
25
26 }
27
28 void main()
29 {
30 FILE *pfr = fopen("E:\\XX.txt", "r"); //加密后的文本
31
32 while (!feof(pfr))
33 {
34 char str[1024] = { 0 };
35 fgets(str, 1023, pfr);
36 run(str);
37 char *p = strstr(str, "XXX，");
38 char *p1 = strstr(str, "XXX");
39
40 if (p != NULL && p1 != NULL)
41 {
42 printf("%s\n", p);
43 }
44 }
45
46
47
48 fclose(pfr);
49
50
51 system("pause");
52 }
