Storage of chain coded data: a guide for best practices
While the popularity of Blockchain technology continues to grow, the demand for secure and scalable solutions has increased. When it comes to storing coded data on the chain, there are several best practices that can help ensure data integrity, security and flexibility. In this article, we will discuss the advantages and disadvantages of the encoding and decoding of chain data, and will provide advice on how to securely store the data coded by JSON.
Why code data on the chain?
Encode chain data offers several advantages:
* decoupling : By storing coded data out of chain, you can decouple it from the blockchain status machine, reducing the risk of data inconsistencies.
* Evolution : Outside chain storage allows more efficient and evolving data processing, because there is no concern about transaction costs or network congestion.
* Flexibility : Coded data can be easily converted to other formats (for example, JSON) for easier integration with external applications.
Data decoding on the chain
Regarding the decoding of data coded on the chain, the following best practices must be followed:
1.
Use a secure coding protocol
Choose a encoding protocol that offers robust safety features, such as:
* Base64 : A widely used and secure method for data coding.
* JSON Web Tokens (JWT) : A standardized format to secure sensitive data.
2.
implement secure decoding mechanisms
To ensure data integrity, implement secure decoding mechanisms:
* hash functions : Use a strong hatching function (for example, SHA-256 or KECCAK-256) to check the decoded data.
* Digital signatures : Use 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 a blockchain storage service (for example, Infura or Ropsten) which provides secure and scalable storage.
* Storage based on files : store the coded data locally on the disk, using a secure encryption algorithm.
4.
Monitor Integrity of the data
Regularly monitor the integrity of coded data:
* versioning
: Use version control to follow the modifications of the coded data.
* The sums of control : Monitor the sums of control for any inconsistency or alteration.
Example of implementation
Here is an example of implementation using JSON web tokens (JWT) and a secure storage solution:
`Javascript
Const Express = require ('Express');
Const JWT = require ("JSONWEBTOKEN");
Const app = Express ();
// Secure coding function using the base64
Encodedata function (data) {
Const Cocodeddata = BTOA (JSON.STRINGIFY (Data));
Return encodeddata;
}
// Decoding function using JWT verification
Decodedata function (encodeddata) {
Const Decodeddata = Atob (Codeddata);
to try {
JWT.VERIFY (Decodeddata, "Your Secret-Key");
Return JSON.PARSE (Decodeddata);
} Catch (error) {
Launch a new error ("non -valid token");
}
}
app.post ('/ encode', async (req, res) => {
Const Data = req.body.data;
Const Cocodeddata = Cocodedata (data);
res.json (encodeddata);
});
App.get ('/ Decode', async (req, res) => {
Const Cocodeddata = req.Query-Coded-Data;
to try {
Const Decodeddata = Decodedata (Codeddata);
Console.log (Decodeddata);
res.send (Decodeddata);
} Catch (error) {
Console.error (error);
res.status (401) .send ("invalid token");
}
});
` ‘
By following these best practices and examples, you can safely store data coded on the chain and recover original data by decoding. Do not forget to always prioritize security and scalability when implementing blockchain -based solutions.
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