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Simple One-Time Pad in Rust
The 2019 Stack Overflow Developer Survey Results Are InSimple cat in RustSimple TCP client in RustSimple graph in RustSimple virtual machine in RustSimple ASCII art in RustSimple Rust WebserverA simple maze generator written in RustSimple Sudoku solver in RustSimple interpreter written in RustSimple Brainfuck Interpreter in Rust
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ margin-bottom:0;
}
$begingroup$
I am new to rust and to start learning the language I decided to implement a simple one-time pad encryption program.
The part I am least sure about is the reading and writing from the files. Ideally this would run efficiently on large files.
use clap::{Arg, App};
use std::{
error::Error,
fs::File,
io::{
self,
Read,
Write,
},
};
const CAPACITY: usize = 1024;
fn main() -> Result<(), Box<dyn Error>> {
let matches = App::new("onetime")
.version("0.1")
.author("Carlo Abelli <carlo@abelli.xyz>")
.about("Encrypts/decrypts a file using a one-time pad.")
.arg(Arg::with_name("FILE")
.required(true)
.help("The file to encrypt/decrypt"))
.arg(Arg::with_name("PAD")
.short("p")
.long("pad")
.takes_value(true)
.value_name("PAD")
.required(true)
.help("The pad to use for encryption/decryption"))
.arg(Arg::with_name("OUTPUT")
.short("o")
.long("output")
.value_name("OUT")
.help("The output file (default: stdout)"))
.get_matches();
let mut file = File::open(matches.value_of("FILE").unwrap())?;
let mut pad = File::open(matches.value_of("PAD").unwrap())?;
if file.metadata()?.len() > pad.metadata()?.len() {
panic!("file is larger than pad!");
}
let mut out: Box<dyn Write> = match matches.value_of("OUTPUT") {
Some(name) => Box::new(File::create(name)?),
None => Box::new(io::stdout()),
};
let mut file_buffer = vec![0u8; CAPACITY];
let mut pad_buffer = vec![0u8; CAPACITY];
loop {
let size = file.read(&mut file_buffer)?;
if size == 0 {
break;
}
pad.read_exact(&mut pad_buffer[..size])?;
let out_buffer: Vec<u8> = pad_buffer.iter()
.zip(file_buffer.iter())
.map(|(pad_byte, file_byte)| pad_byte ^ file_byte)
.collect();
out.write_all(&out_buffer)?;
}
Ok(())
}
rust
asked 6 mins ago
carloabellicarloabelli
1212
$endgroup$
add a comment |
$begingroup$
I am new to rust and to start learning the language I decided to implement a simple one-time pad encryption program.
The part I am least sure about is the reading and writing from the files. Ideally this would run efficiently on large files.
use clap::{Arg, App};
use std::{
error::Error,
fs::File,
io::{
self,
Read,
Write,
},
};
const CAPACITY: usize = 1024;
fn main() -> Result<(), Box<dyn Error>> {
let matches = App::new("onetime")
.version("0.1")
.author("Carlo Abelli <carlo@abelli.xyz>")
.about("Encrypts/decrypts a file using a one-time pad.")
.arg(Arg::with_name("FILE")
.required(true)
.help("The file to encrypt/decrypt"))
.arg(Arg::with_name("PAD")
.short("p")
.long("pad")
.takes_value(true)
.value_name("PAD")
.required(true)
.help("The pad to use for encryption/decryption"))
.arg(Arg::with_name("OUTPUT")
.short("o")
.long("output")
.value_name("OUT")
.help("The output file (default: stdout)"))
.get_matches();
let mut file = File::open(matches.value_of("FILE").unwrap())?;
let mut pad = File::open(matches.value_of("PAD").unwrap())?;
if file.metadata()?.len() > pad.metadata()?.len() {
panic!("file is larger than pad!");
}
let mut out: Box<dyn Write> = match matches.value_of("OUTPUT") {
Some(name) => Box::new(File::create(name)?),
None => Box::new(io::stdout()),
};
let mut file_buffer = vec![0u8; CAPACITY];
let mut pad_buffer = vec![0u8; CAPACITY];
loop {
let size = file.read(&mut file_buffer)?;
if size == 0 {
break;
}
pad.read_exact(&mut pad_buffer[..size])?;
let out_buffer: Vec<u8> = pad_buffer.iter()
.zip(file_buffer.iter())
.map(|(pad_byte, file_byte)| pad_byte ^ file_byte)
.collect();
out.write_all(&out_buffer)?;
}
Ok(())
}
rust
asked 6 mins ago
carloabellicarloabelli
1212
$endgroup$
add a comment |
$begingroup$
I am new to rust and to start learning the language I decided to implement a simple one-time pad encryption program.
The part I am least sure about is the reading and writing from the files. Ideally this would run efficiently on large files.
use clap::{Arg, App};
use std::{
error::Error,
fs::File,
io::{
self,
Read,
Write,
},
};
const CAPACITY: usize = 1024;
fn main() -> Result<(), Box<dyn Error>> {
let matches = App::new("onetime")
.version("0.1")
.author("Carlo Abelli <carlo@abelli.xyz>")
.about("Encrypts/decrypts a file using a one-time pad.")
.arg(Arg::with_name("FILE")
.required(true)
.help("The file to encrypt/decrypt"))
.arg(Arg::with_name("PAD")
.short("p")
.long("pad")
.takes_value(true)
.value_name("PAD")
.required(true)
.help("The pad to use for encryption/decryption"))
.arg(Arg::with_name("OUTPUT")
.short("o")
.long("output")
.value_name("OUT")
.help("The output file (default: stdout)"))
.get_matches();
let mut file = File::open(matches.value_of("FILE").unwrap())?;
let mut pad = File::open(matches.value_of("PAD").unwrap())?;
if file.metadata()?.len() > pad.metadata()?.len() {
panic!("file is larger than pad!");
}
let mut out: Box<dyn Write> = match matches.value_of("OUTPUT") {
Some(name) => Box::new(File::create(name)?),
None => Box::new(io::stdout()),
};
let mut file_buffer = vec![0u8; CAPACITY];
let mut pad_buffer = vec![0u8; CAPACITY];
loop {
let size = file.read(&mut file_buffer)?;
if size == 0 {
break;
}
pad.read_exact(&mut pad_buffer[..size])?;
let out_buffer: Vec<u8> = pad_buffer.iter()
.zip(file_buffer.iter())
.map(|(pad_byte, file_byte)| pad_byte ^ file_byte)
.collect();
out.write_all(&out_buffer)?;
}
Ok(())
}
rust
asked 6 mins ago
carloabellicarloabelli
1212
$endgroup$
I am new to rust and to start learning the language I decided to implement a simple one-time pad encryption program.
The part I am least sure about is the reading and writing from the files. Ideally this would run efficiently on large files.
use clap::{Arg, App};
use std::{
error::Error,
fs::File,
io::{
self,
Read,
Write,
},
};
const CAPACITY: usize = 1024;
fn main() -> Result<(), Box<dyn Error>> {
let matches = App::new("onetime")
.version("0.1")
.author("Carlo Abelli <carlo@abelli.xyz>")
.about("Encrypts/decrypts a file using a one-time pad.")
.arg(Arg::with_name("FILE")
.required(true)
.help("The file to encrypt/decrypt"))
.arg(Arg::with_name("PAD")
.short("p")
.long("pad")
.takes_value(true)
.value_name("PAD")
.required(true)
.help("The pad to use for encryption/decryption"))
.arg(Arg::with_name("OUTPUT")
.short("o")
.long("output")
.value_name("OUT")
.help("The output file (default: stdout)"))
.get_matches();
let mut file = File::open(matches.value_of("FILE").unwrap())?;
let mut pad = File::open(matches.value_of("PAD").unwrap())?;
if file.metadata()?.len() > pad.metadata()?.len() {
panic!("file is larger than pad!");
}
let mut out: Box<dyn Write> = match matches.value_of("OUTPUT") {
Some(name) => Box::new(File::create(name)?),
None => Box::new(io::stdout()),
};
let mut file_buffer = vec![0u8; CAPACITY];
let mut pad_buffer = vec![0u8; CAPACITY];
loop {
let size = file.read(&mut file_buffer)?;
if size == 0 {
break;
}
pad.read_exact(&mut pad_buffer[..size])?;
let out_buffer: Vec<u8> = pad_buffer.iter()
.zip(file_buffer.iter())
.map(|(pad_byte, file_byte)| pad_byte ^ file_byte)
.collect();
out.write_all(&out_buffer)?;
}
Ok(())
}
rust
rust
asked 6 mins ago
carloabellicarloabelli
1212
asked 6 mins ago
carloabellicarloabelli
1212
asked 6 mins ago
carloabellicarloabelli
1212
asked 6 mins ago
carloabellicarloabelli
1212
asked 6 mins ago
carloabellicarloabelli
1212
1212
add a comment |
add a comment |
0
active
oldest
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