Private Keys storage in a mysql database: a guide to build a bitcoin gateway
When embarking on creating your own Bitcoin -based Web application without Corporate Corporate Gateways such as CoinPayments or Bitpay, one of the most critical steps is to store private key ensuar. In this article, we will explore how to store private key in a myql database, ensuring that your confidential information remains protected.
Why Store Private Keys In A Database?
Private Keys are used to encrypt and decrypt bitcoins as well as other cryptocurrencies. Storage of these keys in a safe database can help prevent unauthorized access or sensitive financial data theft.
Requirements
Before Proceeding, Make Sure You Have:
- A MySQL Server Set to your Local Machine or a Cloud Provider.
- The necessary facilities installed:
Mysql,Opensssl(for encryption) and any other libraries required by the Chosen Programming Language.
- Familiarity with Database Design and MySQL query languages.
Step 1: Create a New MySQL Database
Create a New Database to Store Private Keys, for Example, Bitcoin_keys. You can do this using the following sql command:
`Sql
Create Bitcoin_keys database;
`
Step 2: Generate A Safe Private Key (Optional)
For maximum security, generate a unique and complex private key. You can use Tools Like Openssl to Create a New Pair of Keys:
`Bash
Openssl Genrsa -out Private_Key.Pem 2048
`
This will produce a file called private_key.pem.
Step 3: Create A MySQL Table for Private Keys
Create A Table to Store Private Keys:
`Sql
Create the Bitcoin_keys Table (
id you are the auto_inchrement primary key,
User_id you,
Key_Data Text (255),
Created_at Timestamp standard current_timestamp,
Updated_at Timestamp Standard Current_Timstamp at Update Current_Timtestamp
);
`
Here, id is an unique identifier for each private key input,User_id is the user who has the key (for example, the username of your web application) and key_data 'stores the encrypted private key.
Step 4: ENTER PRIVATE KEY DATE
Enter the Private Key Generated in the Table:
Sql
Insert in Bitcoin_keys (user_id, key_data)
Values (1, base64_encode (‘your_private_key_here’));
`
Replace Base64_encode () in a safe way to encode your private key (for example, using opensssl or other encryption library).
Step 5: Create Stored Procedures for Safe Key Access
Create Stored Procedures That Validate User Identity and Encrypt/Decrypt The Private Keys:
`Sql
Delimiter //
Create Procedure check_user_privkey (
In user_id you,
In the text key_data
)
To start
IF Hash (Key_Data) = Hash (Opensl_encrypt (User_ID, ‘AES-256-CBC’, ‘Your_Password’, 32))))
Select * bitcoin_keys where id = user_id;
Other
Sight Sighttate ‘45000’ Set Message_text = ‘Invalid or Absent Data;
End if;
End //
Delimiting;
`
`Sql
Create encrypt_privkey function (
In the text key_data,
In the VARCHAR Password (255)
) Returns the text {
To start
– Encrypt the private key using the chosen encryption algorithm.
Encrypted_key: = opensssl_encrypt (key_data, ‘AES-256-CBC’, password);
Return criprypted_key;
End;
}
`
Step 6: Call The Stored Procedures of Your Web Application
Create a Function or Endpoint in your Web Application to Interact With Stored Procedures:
“ JavaScript
CSTRA MYSQL = Requires (‘MySQL’);
Const dbconfig = {{
Host: ‘Localhost’,
User: ‘Your_username’,
Password: ‘Your_Password’,
Database: ‘Bitcoin_keys’
};
Check_privkey function (user_id, key_data) {
Const Conn = MySql.Createconnection (DBCONFIG);
Conn.connect ();
Return New Promise ((Resole, Reject) => {
Conn.query (call check_user_privkey (1,?