make signature for api

make-signature.py

import sys
import base64
import hmac
from hashlib import sha1
from datetime import datetime, timezone


# https://docs.aws.amazon.com/ko_kr/AmazonS3/latest/userguide/RESTAuthentication.html
def make_signature(timestamp, company, endpoint, method, secret_key):
    string_to_signin = '\n'.join([
        str(int(timestamp)),
        str(company),
        str(endpoint),
        str(method),
    ])
    return base64.b64encode(hmac.new(
        secret_key.encode('utf-8'), 
        string_to_signin.encode('utf-8'),
        sha1
    ).digest()).decode('utf-8')


if __name__ == '__main__':
    timestamp = int(datetime.now(timezone.utc).timestamp())
    company, endpoint, method, secret_key = sys.argv[1:]
    print(f'timestamp: {timestamp}')
    print(f'sources: {company}, {endpoint}, {method}, {secret_key}')
    
    signature = make_signature(timestamp, company, endpoint, method, secret_key)
    print(f'signature: {signature}')

output:

sources: 1700013267, a, /api, POST, b
signature: a2HJXhSQGE69/zCx4orMrFkz+94=