seedtool-cli 0.4.0

A command-line tool for generating and transforming cryptographic seeds.
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use anyhow::Result;

use super::{Format, InputFormat, OutputFormat};
use crate::{
    cli::Cli,
    random::sha256_deterministic_random_string,
    seed::Seed,
    util::{data_to_ints, digits_to_data},
};

pub struct DiceFormat;

impl Format for DiceFormat {
    fn name(&self) -> &str { "dice" }

    fn round_trippable(&self) -> bool { false }
}

impl InputFormat for DiceFormat {
    fn process_input(&self, mut state: Cli) -> Result<Cli> {
        // Compatibility with https://iancoleman.io/bip39/
        let string = state.expect_input()?;
        digits_to_data(&string, 1, 6)?; // syntax check only
        state.seed = Some(Seed::new(sha256_deterministic_random_string(
            &string,
            state.count,
        )?));
        Ok(state)
    }
}

impl OutputFormat for DiceFormat {
    fn process_output(&self, state: Cli) -> Result<String> {
        data_to_ints(state.expect_seed().data(), 1, 6, "")
    }
}