work on feistel

This commit is contained in:
Christoph J. Scherr 2023-05-10 14:41:06 +02:00
parent f3be0f4661
commit 29939433dc
Signed by: PlexSheep
GPG Key ID: 25B4ACF7D88186CC
8 changed files with 84 additions and 585 deletions

1
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@ -15,6 +15,7 @@ path = "src/main.rs"
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src/algo/feistel0.rs Normal file
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@ -0,0 +1,23 @@
/// # basic implementation of a feistel network
///
/// This module implements a feistel network according to an exercise at DHBW Mannheim.
/// For demonstration purposes only, do not use this in a secure environment.
///
/// ___
/// Author: Christoph J. Scherr <software@cscherr.de>
/// License: MIT
/// Source: <https://git.cscherr.de/PlexSheep/plexcryptool/>
pub fn inner(input: u16, key: u16) -> u16 {
let blocks = [
input & 0xf000,
input & 0x0f00,
input & 0x00f0,
input & 0x000f,
];
dbg!(blocks);
panic!("Not implemented");
}

11
src/algo/mod.rs Normal file
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@ -0,0 +1,11 @@
/// # algorithm module
///
/// Implements some custom algorithms that we covered in exercises and lectures at DHBW Mannheim.
///
/// Do not use these, any cryptologic algorithm here can most probably be attacked in some way.
///
/// ___
/// Author: Christoph J. Scherr <software@cscherr.de>
/// License: MIT
/// Source: <https://git.cscherr.de/PlexSheep/plexcryptool/>
pub mod feistel0;

0
src/common/common.rs Normal file
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9
src/common/mod.rs Normal file
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@ -0,0 +1,9 @@
/// # common module
///
/// This module implements functionality used by multiple other ones.
///
/// ___
/// Author: Christoph J. Scherr <software@cscherr.de>
/// License: MIT
/// Source: <https://git.cscherr.de/PlexSheep/plexcryptool/>
pub mod common;

View File

@ -20,10 +20,13 @@
//! Source: <https://git.cscherr.de/PlexSheep/plexcryptool/>
mod binary;
mod math;
mod algo;
mod common;
use std::{str::FromStr, fmt::Debug};
use clap::{Args, Parser, Subcommand};
use clap_num::maybe_hex;
use num_bigint;
/*************************************************************************************************/
// This is just structures for parsing Cli args
@ -48,7 +51,9 @@ enum Commands {
/// Use math functions
Math(MathCommand),
/// Use binary functions
Binary(BinaryCommand)
Binary(BinaryCommand),
/// Use custom algorithms
Algo(AlgoCommand),
}
#[derive(Args, Clone, Debug, PartialEq, Eq)]
@ -63,6 +68,12 @@ struct BinaryCommand {
action: BinaryActions
}
#[derive(Args, Clone, Debug, PartialEq, Eq)]
struct AlgoCommand {
#[command(subcommand)]
action: AlgoActions
}
#[derive(Subcommand, Clone, Debug, PartialEq, Eq)]
enum MathActions {
#[command(name="modexp")]
@ -98,6 +109,20 @@ struct XorArgs {
b: u128,
}
#[derive(Subcommand, Clone, Debug, PartialEq, Eq)]
enum AlgoActions {
#[command(name="feistel-i")]
Feistel0Inner(Feistel0InnerArgs)
}
#[derive(Args, Clone, Debug, PartialEq, Eq)]
struct Feistel0InnerArgs {
#[clap(value_parser=maybe_hex::<u16>)]
input: u16,
#[clap(value_parser=maybe_hex::<u16>)]
key: u16,
}
/*************************************************************************************************/
/// main function of plexcryptool.
///
@ -149,7 +174,19 @@ pub fn main() {
}
}
}
}
Commands::Algo(action) => {
match action.action {
AlgoActions::Feistel0Inner(alg_fei_args) => {
let result: u16 = algo::feistel0::inner(alg_fei_args.input, alg_fei_args.key);
if args.machine {
println!("{}", result)
}
else {
println!("result is {}", result)
}
}
}
}
}
}