The ROT47 Cipher can be implemented in the following C/C++ Function. The ROT47 Cipher helps to encode/decode plain-text.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | #include <stdio.h> #include <string.h> void rot47(char *buf, int l) { for (int i = 0; i < l; ++ i) { if (buf[i] >= 33 && buf[i] <= 126) { buf[i] = 33 + ((buf[i] + 14) % 94); } } } int main(int argc, char* argv[]) { if (argc == 0) { return 0; } for (int i = 1; i < argc; ++ i) { rot47(argv[i], strlen(argv[i])); printf("%s\n", argv[i]); } return 0; } |
#include <stdio.h>
#include <string.h>
void rot47(char *buf, int l) {
for (int i = 0; i < l; ++ i) {
if (buf[i] >= 33 && buf[i] <= 126) {
buf[i] = 33 + ((buf[i] + 14) % 94);
}
}
}
int main(int argc, char* argv[]) {
if (argc == 0) {
return 0;
}
for (int i = 1; i < argc; ++ i) {
rot47(argv[i], strlen(argv[i]));
printf("%s\n", argv[i]);
}
return 0;
}We can compile using gcc compiler:
1 | $ ./gcc rot47.c -o rot47 |
$ ./gcc rot47.c -o rot47
Then, we can perform the ROT47 Cipher on the command line parameters:
1 2 3 | $ ./rot47 "Hello, World" "How Are You!" w6==@[ (@C=5 w@H pC6 *@FP |
$ ./rot47 "Hello, World" "How Are You!" w6==@[ (@C=5 w@H pC6 *@FP
The same text ROT47-ed twice will revert to original text.
1 2 3 | $ ./rot47 "w6==@[ (@C=5" "w@H pC6 *@FP" Hello, World How Are You! |
$ ./rot47 "w6==@[ (@C=5" "w@H pC6 *@FP" Hello, World How Are You!
–EOF (The Ultimate Computing & Technology Blog) —
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