Ethereum: What’s the best practice to storing encoded data on-chain?

storage of coded data on the chain: a guide to the best practices

As the popularity of blockchain technology increases, the demand for safe and scalable solutions increased. When it comes to storing coded data in the chain, there are some of the best practices that can help ensure data integrity, security and flexibility. In this article, we will discuss the advantages and disadvantages of coding and decoding data in the chain and provide secure storage of data coded by JSON.

Why cod the data in the chain?

Data coding on the chain offers several advantages:

* Delivery : By storing coded data outside the chain, you can separate it from the blockchain state machine, reducing the risk of data inconsistency.

* scalability : storage without a chain allows for more efficient and scalable data processing because there is no concern about transaction fees or network overload.

* Flexibility : Code data can be easily converted to other formats (e.g. JSON) to facilitate integration with external applications.

Data decoding on the chain

When it comes to decoding coded data on the chain, follow the following best practices:

1.
Use a safe coding protocol

Select a coding protocol that provides solid security functions, such as:

* Base64

: widely used and safe data coding method.

* JSON Internet tokens (JWT) : Standardized format for securing confidential data.

2.
Implementation of safe decoding mechanisms

To ensure data integrity, implement secure decoding mechanisms:

* shortcut functions : Use a strong shortcut function (e.g. SHA-256 or KECCAK-256) to verify decoded data.

* Digital signatures : Apply digital signatures to ensure the authenticity of decoded data.

3.
Use a reliable storage solution

Store coded data in a reputable and secure storage solution:

* blockchain storage

: Use blockchain storage service (e.g. infura or ropsten), which provides safe and scalable memory.

* Storage based on files : Store coded data locally on disk, using a secure encryption algorithm.

4.
Data integrity

Regularly monitor the integrity of coded data:

* Version : Use version control to track changes in coded data.

* Control sum : monitor the checksums for any inconsistency or manipulation.

Sample implementation

Here is an example of implementation using JSON (JWT) online tokens and a safe storage solution:

`Javascript

Const Express = requires ("Express");

Const jwt = requires ("jsonwebtken");

const app = express ();

// Safe coding function using Base64

ENCODEDATA function (Data) {

Const enkodeddata = btoa (json.strringyphy (data));

Return Codedata;

}

// decoding function using JWT verification

DECODEDATA function (encodeddata) {

Const DECODDDATA = ATOB (Encodeddata);

to try {

jwt.verify (Decodeeddata, "Your-Secret-Key");

Return Json.parse (Decodeddata);

} catch (error) {

Throw a new mistake ("incorrect token");

}

}

app .st ('/Encode', async (req, res) => {

Const Data = req.body.data;

Const Enkodeddata = Encodedata (data);

res.json (codedata);

});

App.Get ('/Decode', async (req, res) => {

Const enkodeddata = req.query-coded-Data;

to try {

Const DECODDDATA = DECODEDATA (ENCODEDDATA);

console.log (Decodeeddata);

Res.Send (Decodeddata);

} catch (error) {

console.error (error);

res.status (401). Send ("incorrect token");

}

});

By following the best practices and examples, you can safely store coded data in the chain and download original data by decoding. Remember to always prioritize the safety and scalability when implementing blockchain based solutions.