security in cosmos - encryption & decryption

[golnar-m]

We should secure the way that we send data from chain to dApps and in contrary.

For doing this, we need to encrypt data in chain and encrypt data in smart contracts OR in client side.

What is the best practice for doing this and send data in a secure way to dApps in cosmos?

[facundomedica]

Hey! The SDK doesn't include any way of data encryption out of the box. If you'd like to implement some kind of secure communication, it'll depend on who is/are the sender/s and the receiver/s and the type of data and some other factors. Can you explain a bit more on your use case?

EDIT: clarified that this is indeed possible to do with the SDK but that we don't include any tools to do it by default.

[golnar-m]

Hi @facundomedica
We need to give dApp developers access to some on-chain / of-chain data by smart contracts. Means dApp developers make a query for our data and we need to encrypt data and it should be decrypted somewhere. We are thinking about encrypting data before sending and decrypting data. As you know dApp developers use smart contracts for interacting with the chain, Our need is which mechanism cosmos has for secure interaction in connection with smart contracts.

Thank you

[facundomedica]

So the data is not public? Is the data secret in some way? Who writes that data in the first place?
A common user wouldn't be able to query that data, only dApp developers?

[golnar-m]

@facundomedica

We have :
1- Some data in public
2- Some data not public

But lets discuss about not public data firstly.

Is the data secret in some way? No, do we have solution for this, by cosmos , ...
Who writes that data in the first place? We save some data from our hardware devices
A common user wouldn't be able to query that data, only dApp developers? Yes, the goal is give access to fetch these data by dApp developers but in a safe mode.