#minecraft-mod #chat #encryption #reports #base64 #gcm #passphrase

ncr

Rust implementation of chat encryption in the Minecraft mod No Chat Reports

3 releases

0.1.2 May 21, 2023
0.1.1 Jan 21, 2023
0.1.0 Jan 13, 2023

#1120 in Cryptography

24 downloads per month

MIT license

43KB
583 lines

No Chat Reports (NCR) Chat Encryption

This crate implements the No Chat Reports's custom chat encryption. More specifically this implements a fork of No Chat Reports.

All functionalities of the custom chat encryption are implemented. You can still use this crate normally if you are using the original No Chat Reports.

  • Caesar, Ecb, Cfb8 and Gcm encryption
  • Base64 (old), Base64r, Sus16 and Mc256 encoding
  • Passphrase

Examples

Encrypting

use ncr::{
    encoding::Base64rEncoding,
    encryption::{Cfb8Encryption, Encryption},
    utils::prepend_header,
    AesKey,
};

let key = AesKey::gen_from_passphrase(b"secret");

let plaintext = prepend_header("I love Minecraft!");
let ciphertext = Cfb8Encryption::<Base64rEncoding>::encrypt(&plaintext, &key).unwrap();

println!("{}", ciphertext);

Decrypting

use ncr::{
    encoding::Base64rEncoding,
    encryption::{Cfb8Encryption, Encryption},
    utils::trim_header,
    AesKey,
};

let key = AesKey::gen_from_passphrase(b"secret");

let ciphertext = r#"%[2_0»³"!7).«?;!.$¥`¶:8~667ª¸[¬)¢+¤^"#;
let plaintext = Cfb8Encryption::<Base64rEncoding>::decrypt(ciphertext, &key).unwrap();

let plaintext = trim_header(&plaintext).unwrap();

assert_eq!(plaintext, "I love Minecraft!");

Dependencies

~0.5–0.9MB
~16K SLoC