added key image to README.md

1 files changed, 105 insertions, 0 deletions

diff --git a/main.c b/main.c
new file mode 100644
index 0000000..66bb64e
--- /dev/null
+++ b/main.c
@@ -0,0 +1,105 @@
+#include <sodium/randombytes.h>
+#include <stdio.h>
+#include <string.h>
+#include <sodium.h>
+#include <unistd.h>
+#include <ctype.h> //To Upper
+
+
+long count_lines(FILE *File) { 
+    char c;
+    long line_counter = 0;
+    while ((c = getc(File)) != EOF) {
+        if (c == '\n') {
+            line_counter++;
+        }
+    }
+    return(line_counter);
+}
+
+void randomize_case(char *a) { // Accepts a string as input
+    for (int i = 0; i < strlen(a); i++) {
+        int coin = randombytes_uniform(2); // Decide if the current character will be capitalized or lowercase
+        if (coin == 1) {
+            a[i] = toupper(a[i]);
+        }
+    }
+}
+
+void generate_integers(void) {
+    int length = 5; // TO-DO: Make random eventually
+    for (int i=0; i<length; i++) {
+        int random = randombytes_uniform(length);
+        printf("%d", random);
+    }
+}
+
+void generate_characters(char *set) {
+    int random_length;
+    // while (random_length <= 3) random_length 
+    for (int i = 0; i < 5; i++) {
+        int random_character = randombytes_uniform(strlen(set));
+        printf("%c", set[random_character]);
+    }
+}
+
+int main (int argc, char **argv) {
+    char a, arg, str[20];
+    long line_counter, line_total, r;
+    FILE *words;
+
+    int index;
+    int f_flag = 0; 
+    int c;
+    opterr = 0;
+
+    char character_set[28] = "!@#$%^&*()_-+={}[]|~`<,>.?:;";
+    char letter_set[26] = "abcdefghijklmnopqrstuvwxyz";
+
+    while ((c = getopt (argc, argv, "n")) != -1)
+        switch(c) {
+            case 'n':
+            case '?':
+                if (optopt == 'c')
+                    fprintf (stderr, "Option -%c requires an argument.\n", optopt);
+                else if (isprint (optopt))
+                    fprintf (stderr, "Unknown option '-%c',\n", optopt);
+                else
+                    fprintf (stderr, "Unknown option character '\\x%x.\n", optopt);
+                return 1;
+            default:
+                abort();
+        }
+
+    if (sodium_init() < 0) return 1;    
+    words = fopen("word_list.txt", "r");
+
+    line_total = count_lines(words);
+    fseek(words, 0, SEEK_SET); // Reset pointer to beginning of file
+
+    char temp[2]; // Cannot copy c directly to str. needs a buffer
+    temp[1] = '\0'; // Makes the array a string
+
+    r = randombytes_uniform(line_total + 1); // Generates random line number to use for string
+                                             
+    while ((a = getc(words)) != EOF) {
+        int i;
+        temp[0] = a;
+        if ((r == i) && (a != '\n')) { 
+            strcat(str, temp); 
+        }
+        if (a == '\n') {
+            i++;        }
+    }
+
+    randomize_case(str);
+    generate_integers();
+    generate_characters(letter_set);
+    // printf("%s", str);
+    generate_characters(character_set);
+
+    printf("\n");
+    fseek(words, 0, SEEK_SET); // Reset pointer to beginning of file //
+    fclose(words);
+}
+