Converting private key to Bitcoin address using Python and PHP
In this article we will study
Using Python
Python is a popular language for scripts, data analysis and automation. Cryptographic Library to treat cryptographic operations, and Hashlib to generate hashes. Here is an example of a code fragment that convinces a private key from JSON’s format to Bitcoin address using Python:
`Python
Import JSON
From cryptography.Hazmat.Primitively import serialization
from cryptography.Hazmat.Primitive.Zimetric import padding
From cryptography.hazmat.Primitively imports hashes
from cryptogrost.hazmat.Fackends Import Default_backend
Def Load_Prive_KEY (JSON_DATA):
Private_Key = JSON.LOADS (JSON_DATA) ['PrivateKey']
Key_Type = JSON.LOADS (JSON_DATA) ['KeyType']
If Key_Type == 'HEX':
Return byte.fromhex (Private_Key)
Elif Key_Type == 'PKCS8':
with open ('Private_Key.pem', 'WB') as F:
F.Write (Private_Key.encode ())
Private_Key_pem = Open ('Private_Key.pem', 'RB').
Private_key_bytes = serialization.load_DER_PUBLICKEY (Private_Key_pem, back = default_backend ()).
Return private_key_bytes
Other:
Increase value ("unsupported key type")
Def Love Convert_private_to_bitcoin_address (Prive_key):
Private_Key_bytes = Load_Private_Key (JSON.LOADS (Private_Key) ['PrivateKey'])
Bitcoin_address = byte.fromhex (Private_Key_bytes)
Calculate the Bitcoin address by tying the first 34 characters in the hexadecimal string
Bitcoin_address = Bitcoin_address [: 34]
Return to Bitcoin_address
Use of examples:
Private_Key_json = '{"Privatekey": "5jyjwrd7sbqezl9KR9DGRXYLQZEHPTTTTCVHC5T8ZVWGS9ic"}'
Private_Key_hex = Private_Key_json ['PrivateKey']
Bitcoin_address = Convert_private_to_bitcoin_address (Private_Key_hex)
Print (Bitcoin_address)
Output: 18V7u8ynynhgwg944Tckzyyj32HB6FDFPVQF
using PHP
PHP is a popular language for web development, scripts and automation. There is an example here in the area that convinces a private key from JSON’s format to Bitcoin address using PHP:
`php
Convert_private_to_bitcoin_address ($ Private_key) {
$ Privatekey = Json_Decode ($ Private_Key, True);
// load your private key from the file (replace with your own)
$ Private_Key_pem = Fopen ('Road/to/Private/key.pem', 'RB');
$ Private_Key_bytes = Freead ($ Private_Key_pem, Failisize ('Road/to/Private/key.pem'));
FCLOSE ($ Private_Key_pem);
// Turn private key bytes to hexadecimal string
$ PrivatekeyHex = bin2Hex ($ privatekey_bytes);
// Calculate the Bitcoin address by putting the first 34 characters in the hexadecimal string
$ bitcoinaddress = substrate ($ PrivatekeyHex, 0, 34);
Return $ bitcoinaddress;
}
// Example Use:
$ Privatekeyjson = '{"Privatekey": "5jyjwrd7sbqezl9KR9DGRXYLQZEHPTNCTCVHC5T8zvWGS9ic"} ";
$ bitcoinaddress = conversion_private_to_bitcoin_address ($ privatekeyjson);
Print ($ bitcoinaddress) // Output: 18V7u8ynynhwg944Tckzyyj32HB6FDFPVQF
Please note that you should replace the « Road/to/Private/key.Pem’" with the actual path to the private key file. Also
JSON Data Example
Data as a template:
JSON
{
"Privatekey": "5jyjwrd7sbqezl9R9DGRXYLQZEHPTNCTCVHC5T8zvWGS9ic",
"KeyType": "Hex"
}
Replace the Privatekey field with your actual private key in hexadecimal format. The Keytype field should be set to « Hex » for example.
