请求签名方法

$apiSecret = '0CDE6743F18F3DA********49FD47C1576671FD5';
$srcStr = 'GETcvm.tencentcloudapi.com/?Action=DescribeInstances&InstanceIds.0=ins-09dx96dg&Limit=20&Nonce=11886&Offset=0&Region=ap-guangzhou&SecretId=AKIDz8krbsJ5yKBZQpn74WFkmLPx3*******&Timestamp=1465185768&Version=2017-03-121681973331';
$macHex = hash_hmac('sha1', $srcStr, $apiSecret, false);
$signStr = base64_encode($macHex);
echo $signStr;

import hmac
import hashlib
import base64

api_secret = '0CDE6743F18F3DA********49FD47C1576671FD5'
src_str = 'GETapi.satogate.io/getAddress?Action=DescribeInstances&...'
mac_hex = hmac.new(
    api_secret.encode('utf-8'),
    src_str.encode('utf-8'),
    hashlib.sha1
).hexdigest()
sign_str = base64.b64encode(mac_hex.encode('utf-8')).decode('utf-8')
print(sign_str)

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import java.util.Base64;

String apiSecret = "0CDE6743F18F3DA********49FD47C1576671FD5";
String srcStr = "GETapi.satogate.io/getAddress?Action=DescribeInstances&...";
Mac mac = Mac.getInstance("HmacSHA1");
mac.init(new SecretKeySpec(apiSecret.getBytes("UTF-8"), "HmacSHA1"));
byte[] rawHmac = mac.doFinal(srcStr.getBytes("UTF-8"));
StringBuilder hexStr = new StringBuilder();
for (byte b : rawHmac) {
    hexStr.append(String.format("%02x", b));
}
String signStr = Base64.getEncoder().encodeToString(hexStr.toString().getBytes("UTF-8"));