iota-sdk 0.3.0

The IOTA SDK provides developers with a seamless experience to develop on IOTA by providing account abstractions and clients to interact with node APIs.
Documentation 
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// Copyright 2022 IOTA Stiftung
// SPDX-License-Identifier: Apache-2.0

//! Implementation of [`PlaceholderSecretManager`].

use std::ops::Range;

use async_trait::async_trait;
use crypto::keys::slip10::Chain;

use super::{GenerateAddressOptions, SecretManage, SecretManageExt};
use crate::{
    client::{secret::PreparedTransactionData, Error},
    types::block::{address::Address, signature::Ed25519Signature, unlock::Unlocks},
};

/// Secret manager that is only useful to prevent accidental address generation in a wallet
/// that has an offline counterpart for address generation and signing.
pub struct PlaceholderSecretManager;

#[async_trait]
impl SecretManage for PlaceholderSecretManager {
    type Error = Error;

    async fn generate_addresses(
        &self,
        _coin_type: u32,
        _account_index: u32,
        _address_indexes: Range<u32>,
        _options: Option<GenerateAddressOptions>,
    ) -> Result<Vec<Address>, Self::Error> {
        Err(Error::PlaceholderSecretManager)
    }

    async fn sign_ed25519(&self, _msg: &[u8], _chain: &Chain) -> Result<Ed25519Signature, Self::Error> {
        Err(Error::PlaceholderSecretManager)
    }
}

#[async_trait]
impl SecretManageExt for PlaceholderSecretManager {
    async fn sign_transaction_essence(
        &self,
        _prepared_transaction_data: &PreparedTransactionData,
        _time: Option<u32>,
    ) -> Result<Unlocks, <Self as SecretManage>::Error> {
        Err(Error::PlaceholderSecretManager)
    }
}