First commit

Generates one random password. 5 digit number, random word w/ random case, and random characters

1 files changed, 89 insertions, 0 deletions

diff --git a/password.c b/password.c
new file mode 100644
index 0000000..e028b61
--- /dev/null
+++ b/password.c
@@ -0,0 +1,89 @@
+// https://github.com/dwyl/english-words
+
+#include <sodium/randombytes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sodium.h>
+#include <ctype.h> //To Upper
+
+
+long count_lines(FILE *File) { // Accepts file as input
+    char c;
+    long line_counter = 0;
+    while ((c = getc(File)) != EOF) {
+        if (c == '\n') {
+            line_counter++; // Increment when each line number is passed
+        }
+    }
+    return(line_counter); // Return the found value
+}
+
+void randomize_case(char *a) { // Accepts a string as input
+    for (int i = 0; i < strlen(a); i++) { // Loop through the length of the string
+        int coin = randombytes_uniform(2); // Decide if the current character will be capitalized or lowercase
+        if (coin == 1) {
+            a[i] = toupper(a[i]); // Change current character into a capital
+        }
+    }
+}
+
+void generate_integers(void) { // Generates a string of random integers
+    int length = 5; // TO-DO: Make random eventually
+    for (int i=0; i<length; i++) {
+        int random = randombytes_uniform(length); // Generate random number
+        printf("%d", random);
+    }
+}
+
+void generate_characters(char *set) {
+    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 c;
+    FILE *words;
+    long line_counter;
+    long line_total, r;
+    char str[20];
+
+    char character_set[28] = "!@#$%^&*()_-+={}[]|~`<,>.?:;"; // Character set used to generate random characters
+    if (sodium_init() < 0) return 1; // Returns an error if sodium isn't working correctly
+    words = fopen("word_list.txt", "r"); // Open text file
+
+
+    line_total = count_lines(words); // Count the total number of lines in the file
+    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
+    temp[1] = '\0'; // Makes the array a string
+
+    while ((c = getc(words)) != EOF) {
+        int i;
+        temp[0] = c; // Temporally move the current character into temp
+        if ((r == i) && (c != '\n')) { // If the current line is the designated word & it isn't the break character
+            strcat(str, temp); // Copy the character to the string
+        }
+        if (c == '\n') {
+            i++; // Increment the line counter
+        }
+    }
+
+    //** Passwords are generated by just printing outputs of different functions. **/
+    randomize_case(str);
+    generate_integers();
+    printf("%s", str);
+    generate_characters(character_set);
+
+    printf("\n");
+    fseek(words, 0, SEEK_SET); // Reset pointer to beginning of file 
+    fclose(words);
+    /** printf("LINE TOTAL: %li\n", line_total); **/
+}
+