node: Feature request: Ability to generate signed transactions offline

[ghost]

It would be useful to be able to generate a signed transaction offline on an 'airgap' computer. This signed transaction can later be transferred to an online computer and broadcast on the blockchain.

The idea of this feature is to prevent exposure of the private key to a computer that is connected to the internet and hence reduce the risk of the private key being intercepted by malicious parties.

A comparable feature is offered for the Ethereum blockchain by MyEtherWallet.com

[ghost]

@erikzhang The back-end functionality to allow offline transactions has been added in neo-cli neo-project/neo-gui-2.x#162.

However this feature request still requires a front-end gui to allow the average end-user to use the functionality.

Please re-open this ticket as the feature has not been fully implemented.

Many thanks

[ghost]

Additionally it seems that neo-project/neo-gui-2.x#162 only supports multi-signature transactions and does not provide the ability to sign a standard single signature transaction offline. (Unless I'm missing something)

[shargon]

Duplicated with neo-project/neo#3017