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Build the tool yo.

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pyro57000
2025-08-15 11:00:12 -05:00
parent b9bc14a7da
commit f5dbacbf3c
4 changed files with 278 additions and 0 deletions
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5
.gitignore vendored
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@@ -19,3 +19,8 @@ target
# and can be added to the global gitignore or merged into this file. For a more nuclear # and can be added to the global gitignore or merged into this file. For a more nuclear
# option (not recommended) you can uncomment the following to ignore the entire idea folder. # option (not recommended) you can uncomment the following to ignore the entire idea folder.
#.idea/ #.idea/
# Added by cargo
/target

92
Cargo.lock generated Normal file
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@@ -0,0 +1,92 @@
# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 4
[[package]]
name = "CrackaCesar"
version = "0.1.0"
dependencies = [
"colored",
]
[[package]]
name = "colored"
version = "3.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fde0e0ec90c9dfb3b4b1a0891a7dcd0e2bffde2f7efed5fe7c9bb00e5bfb915e"
dependencies = [
"windows-sys",
]
[[package]]
name = "windows-sys"
version = "0.59.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
dependencies = [
"windows-targets",
]
[[package]]
name = "windows-targets"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
dependencies = [
"windows_aarch64_gnullvm",
"windows_aarch64_msvc",
"windows_i686_gnu",
"windows_i686_gnullvm",
"windows_i686_msvc",
"windows_x86_64_gnu",
"windows_x86_64_gnullvm",
"windows_x86_64_msvc",
]
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7
Cargo.toml Normal file
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@@ -0,0 +1,7 @@
[package]
name = "CrackaCesar"
version = "0.1.0"
edition = "2024"
[dependencies]
colored = "3.0.0"

174
src/main.rs Normal file
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@@ -0,0 +1,174 @@
use std::collections::HashMap;
use std::env::args;
use std::io::stdin;
use std::process::exit;
use colored::Colorize;
fn main() {
let mut alphabet = HashMap::new();
alphabet.insert(0, 'a');
alphabet.insert(1, 'b');
alphabet.insert(2, 'c');
alphabet.insert(3, 'd');
alphabet.insert(4, 'e');
alphabet.insert(5, 'f');
alphabet.insert(6, 'g');
alphabet.insert(7, 'h');
alphabet.insert(8, 'i');
alphabet.insert(9, 'j');
alphabet.insert(10, 'k');
alphabet.insert(11, 'l');
alphabet.insert(12, 'm');
alphabet.insert(13, 'n');
alphabet.insert(14, 'o');
alphabet.insert(15, 'p');
alphabet.insert(16, 'q');
alphabet.insert(17, 'r');
alphabet.insert(18, 's');
alphabet.insert(19, 't');
alphabet.insert(20, 'u');
alphabet.insert(21, 'v');
alphabet.insert(22, 'w');
alphabet.insert(23, 'x');
alphabet.insert(24, 'y');
alphabet.insert(25, 'z');
let mut cracking_key = 0;
let common_short_words = vec![
"i",
"the",
"an",
"full",
"bug",
"of",
"for",
"you",
"not",
"are",
"new",
"was",
"can",
"has",
"out",
"use",
"may",
"our",
"see",
"his",
"him",
"her",
"any",
"but",
"and",
"all",
"one",
"two",
"we",
];
let args: Vec<String> = args().collect();
if args.len() < 2 {
println!("
USAGE:
CrackaCesar cipher text
");
exit(1);
}
let mut cipher_vec = args.clone();
cipher_vec.remove(0);
let cipher_text = args[1..].join(" ");
let mut short_words = Vec::new();
for word in cipher_vec{
if word.len() < 4{
short_words.push(word.clone());
}
}
let mut cracked = false;
let mut failed_decrypt_words = Vec::new();
for key in 0..26{
let mut decrypted_words = Vec::new();
for oword in short_words.clone(){
let word = oword.to_lowercase();
let mut addition_word = String::new();
let chars = word.chars();
for letter in chars{
if letter.is_ascii_alphabetic(){
let mut letter_orig_index = 0;
for (key, value) in alphabet.iter(){
if value == &letter{
letter_orig_index = *key;
}
}
let mut add_letter_index:i32 = letter_orig_index + key;
if add_letter_index > 25{
add_letter_index = add_letter_index - 26;
}
addition_word.push(alphabet[&add_letter_index]);
}
}
decrypted_words.push(addition_word.clone());
failed_decrypt_words.push(format!("{} => {}", key, &addition_word));
}
let success_num = decrypted_words.len();
let mut valid_num: usize = 1;
for word in &decrypted_words{
if common_short_words.contains(&word.as_str()){
valid_num += 1;
}
}
if valid_num >= success_num{
println!("{}\n", "key found!".green());
cracked = true;
cracking_key = key;
}
else if valid_num >= success_num / 2{
println!("{}", "possible key found!".green());
println!("{} => {}", key, decrypted_words.join("\n"));
let mut crack_res = String::new();
println!("try to decypt the whole string with this key?");
stdin().read_line(&mut crack_res).unwrap();
if crack_res.to_lowercase().contains("y"){
cracked = true;
cracking_key = key;
}
}
}
if !cracked{
println!("{}", "couldn't automatically determine a cracking key...".red());
println!("{}", failed_decrypt_words.join("\n\n"));
let mut key_response = String::new();
println!("key that resulted in real words? (enter no if none are)");
stdin().read_line(&mut key_response).unwrap();
if key_response.to_lowercase().contains("n"){
println!("{}", "sorry about that, we can't seem to find the right key...".red());
exit(1);
}
cracking_key = key_response.trim().parse().unwrap();
}
let mut cracked_string = String::new();
for oletter in cipher_text.chars(){
if oletter.is_alphabetic(){
let letter = oletter.to_ascii_lowercase();
let mut orig_index = 0;
for (key, value) in alphabet.iter(){
if value == &letter{
orig_index = *key;
}
}
let mut new_index: i32 = orig_index + cracking_key;
if new_index > 25{
new_index -= 26;
}
let new_letteer = alphabet[&new_index];
cracked_string.push(new_letteer);
}
else{
cracked_string.push(oletter);
}
}
println!("{}\n{}", "Decdrypted cipher:".green() ,cracked_string);
}