Convert the private key to the Bitcoin address using Python and PHP
In this article, we will explore two ways to convert a private key to JSON format to its corresponding Bitcoin address.
using Python
Python is a popular language for command sequences, data analysis and automation. We will use the ‘cryptographylibrary to handle cryptographic operations and' hashlib 'to generate hashes. Here is a fragment of example code that converts a private key of the JSON format to a Bitcoin address using Python:
Python
Import Json
of cryptography.hazmat.Primitivs Import Import
of cryptography.hazmat.Primitives.
of cryptography.hazmat.Primitives Import imports
of cryptography.hazmat.backnds import default_backend
Def load_private_key (json_data):
Private_Key = Json.Loads (Json_data) ['Privatekey']
Key_type = Json.Loads (Json_data) ['Keytype']
if key_type == 'hex':
return bytes.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'). READ ()
private_Key_bytes = serialization.load_der_publickey (private_Key_pem, backend = default_backend ()). Decode ('UTF-8')
return private_Key_bytes
others:
Raise Valueeror ("Type of non -compatible key")
De convert_private_to_bitcoin_address (private_key):
Private_Key_bytes = Load_private_Key (Json.Loads (private_key) ['Privatekey'])
bitcoin_address = bytes.fromhex (private_Key_bytes)
Calculate the Bitcoin address concatenating the first 34 characters of the Hexadecimal chain
Bitcoin_address = bitcoin_address [: 34]
return bitcoin_address
Example use:
Private_Key_json = '{"Privatekey": "5jyjwrrd7sbqezl9kr9dytgrxylqzehptNTCVHC5T8ZVWGS9IC"}'} '
Private_Key_hex = Private_Key_json ['Privatekey']
bitcoin_address = convert_private_to_bitcoin_address (private_Key_hex)
print (bitcoin_address)
output: 18V7U8YNHKWG944TCKZYYJ32HB6FDFVQF
using PHP
PHP is a popular language for web development, command sequences and automation. We will use thehash'function to generate hashes from the private password in JSON format. Here is a fragment of example code that converts a private key of the JSON format to a Bitcoin address using PHP:
PHP
Convert_private_to_bitco_address ($ private_Key) {
$ Privatekey = JSON_DECODE ($ private_Key, True);
// Load the private password from the file (replace with yours)
$ private_Key_pem = fopen (‘route/to/private/key.pem’, ‘rb’);
$ private_Key_bytes = Fred ($ private_Key_pem, filesize (‘path/to/private/key.pem’));
fclose ($ private_Key_pem);
// Convert the bytes of the private key to a hexadecimal chain
$ privateKeyhex = bin2hex ($ privateKey_bytes);
// Calculate the Bitcoin address concatenating the first 34 characters of the Hexadecimal chain
$ bitcoinaddress = substr ($ privatekeyhex, 0, 34);
return $ bitcoinaddress;
}
// Example use:
$ PrivateKejson = ‘{“Privatekey”: “5Jyjwrrd7sbqezl9kr9dytgrxylqzehptncTCVC5T8ZVWGS9IC”}’;
$ bitcoinaddress = convert_private_to_bitcoin_address ($ privateKeyjson);
print ($ bitcoinaddress) // output: 18V7U8YNHKWG944TCKZYYJ32HB6FDFVQF
`
Keep in mind that you must replace‘route/a/private/key.pem’with the real route to its private key file. In addition, be sure to handle any error or exception that may occur during the conversion process.
Example of JSON data
You can use the following example of JSON data as a template:
JSON
{
"Privatekey": "5jyjwrrd7sbqezl9kr9dytgrxylqzehptCtCVHC5T8ZVWGS9IC",
"Keytype": "Hex"
}
Replace thePrivatekeyfield with its real private key in hexadecimal format. TheKeytypefield must be established in '" hex " for this example.
