腾讯云signaturedoesnotmatch

import hashlib
import hmac
import urllib.parse

def generate_signature(secret_key, params):
    sorted_params = sorted(params.items(), key=lambda x: x[0])
    query_string = urllib.parse.urlencode(sorted_params)
    string_to_sign = f"GET&%2F&{urllib.parse.quote(query_string, safe='')}"
    signature = hmac.new(f"{secret_key}&".encode('utf-8'), string_to_sign.encode('utf-8'), hashlib.sha1).digest()
    return urllib.parse.quote_plus(signature)

# 示例参数
params = {
    'Action': 'DescribeInstances',
    'Version': '2017-10-16',
    'Timestamp': '2023-04-30T12:00:00Z',
    'AccessKeyId': 'your_access_key_id',
    'SignatureMethod': 'HMAC-SHA1',
    'SignatureVersion': '1.0'
}

# 生成签名
secret_key = 'your_secret_access_key'
signature = generate_signature(secret_key, params)
params['Signature'] = signature

print(params)