# Trait ethcore_rpc::v1::traits::eth_signing::EthSigning [−]

    pub trait EthSigning: Sized + Send + Sync + 'static {
        type Metadata: Metadata;
        fn sign(&self, H160, Bytes) -> BoxFuture<H520, Error>;
        fn send_transaction(&self,
                        Self::Metadata,
                        TransactionRequest)
                        -> BoxFuture<H256, Error>;
        fn sign_transaction(&self,
                        Self::Metadata,
                        TransactionRequest)
                        -> BoxFuture<RichRawTransaction, Error>;

        fn to_delegate(self) -> IoDelegate<Self, Self::Metadata> { ... }
    }

Signing methods implementation relying on unlocked accounts.

## Associated Types

### `type Metadata: Metadata`

Requests metadata

## Required Methods

### `fn sign(&self, H160, Bytes) -> BoxFuture<H520, Error>`

Signs the hash of data with given address signature.

### `fn send_transaction(&self,
Self::Metadata,
TransactionRequest)
-> BoxFuture<H256, Error>`

Sends transaction; will block waiting for signer to return the transaction hash. If Signer is disable it will require the account to be unlocked.

### `fn sign_transaction(&self,
Self::Metadata,
TransactionRequest)
-> BoxFuture<RichRawTransaction, Error>`

Signs transactions without dispatching it to the network. Returns signed transaction RLP representation and the transaction itself. It can be later submitted using `eth_sendRawTransaction/eth_submitTransaction`.

## Provided Methods

### `fn to_delegate(self) -> IoDelegate<Self, Self::Metadata>`

Transform this into an `IoDelegate`, automatically wrapping the parameters.

## Implementors

- `impl<C: 'static, M: 'static> EthSigning for SigningQueueClient<C, M> where C: MiningBlockChainClient, M: MinerService`
- `impl<C: 'static, M: 'static> EthSigning for SigningUnsafeClient<C, M> where C: MiningBlockChainClient, M: MinerService`

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