September 2017 Update

Task/Vigen-re-cipher/C/vigen-re-cipher-1.c

@@ -1,56 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-
-void upper_case(char *src)
-{
-        while (*src != '\0') {
-                if (islower(*src)) *src &= ~0x20;
-                src++;
-        }
-}
-
-char* encipher(const char *src, char *key, int is_encode)
-{
-        int i, klen, slen;
-        char *dest;
-
-        dest = strdup(src);
-        upper_case(dest);
-        upper_case(key);
-
-        /* strip out non-letters */
-        for (i = 0, slen = 0; dest[slen] != '\0'; slen++)
-                if (isupper(dest[slen]))
-                        dest[i++] = dest[slen];
-
-        dest[slen = i] = '\0'; /* null pad it, make it safe to use */
-
-        klen = strlen(key);
-        for (i = 0; i < slen; i++) {
-                if (!isupper(dest[i])) continue;
-                dest[i] = 'A' + (is_encode
-                                ? dest[i] - 'A' + key[i % klen] - 'A'
-                                : dest[i] - key[i % klen] + 26) % 26;
-        }
-
-        return dest;
-}
-
-int main()
-{
-        const char *str = "Beware the Jabberwock, my son! The jaws that bite, "
-                    "the claws that catch!";
-        const char *cod, *dec;
-        char key[] = "VIGENERECIPHER";
-
-        printf("Text: %s\n", str);
-        printf("key:  %s\n", key);
-
-        cod = encipher(str, key, 1); printf("Code: %s\n", cod);
-        dec = encipher(cod, key, 0); printf("Back: %s\n", dec);
-
-        /* free(dec); free(cod); */ /* nah */
-        return 0;
-}

Task/Vigen-re-cipher/C/vigen-re-cipher-2.c

@@ -1,4 +0,0 @@
-Text: Beware the Jabberwock, my son! The jaws that bite, the claws that catch!
-key:  VIGENERECIPHER
-Code: WMCEEIKLGRPIFVMEUGXQPWQVIOIAVEYXUEKFKBTALVXTGAFXYEVKPAGY
-Back: BEWARETHEJABBERWOCKMYSONTHEJAWSTHATBITETHECLAWSTHATCATCH