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本帖最后由 ~风介~ 于 2015-5-23 23:46 编辑
C Code:- /* Usage: crypto key input_file output_file */
- #include <stdio.h>
- int main (int argc, char *argv[])
- {
- FILE *fi, *fo;
- char *cp;
- int c;
- if ((cp = argv[1]) && *cp != '\0')
- {
- if ((fi = fopen(argv[2], "rb")) != NULL)
- {
- if ((fo = fopen(argv[3], "wb")) != NULL)
- {
- while ((c = getc(fi)) != EOF)
- {
- if (!*cp)
- cp = argv[1];
- c ^= *(cp++);
- putc(c,fo);
- }
- fclose(fo);
- }
- fclose(fi);
- }
- }
- return 0;
- }
复制代码
C++ Code:- /* Usage: crypto key input_file output_file */
- #include <iostream>
- #include <fstream>
- using namespace std;
- int main(int argc,char *argv[])
- {
-
- ifstream fin;
- ofstream fout;
- char ch;
- char *cp;
-
- fin.open(argv[2],ios_base::binary|ios_base::in);
- fout.open(argv[3],ios_base::binary|ios_base::out);
-
- if ((cp = argv[1]) && *cp != '\0')
- {
- while(!fin.eof())
- {
- if (!*cp)
- cp = argv[1];
- fin.get(ch);
- ch ^= *(cp++);
- fout.put(ch);
- }
- }
- fin.close();
- fout.close();
-
- return 0;
- }
复制代码
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