1.接口说明
人脸活体检测接口用于判断上传的人脸是否为真实活体,能够识别常见攻击方式(翻拍、视频、面具等),并返回活体分数与风险信息,可与人脸比对组合完成实名核身与风控。
1.1 主要功能
- 精准活体:
- 支持复杂光照、姿态,识别多种攻击载体。
- 快速响应:
- 云端计算,接口延迟低,适合实时业务。
- 简单接入:
- 提供多语言示例与双认证方式,快速上线。
1.2 典型场景
实名认证、线上开户、刷脸登录、防舞弊、远程监考、线上贷前风控等。
2.请求信息
2.1 请求地址(URL)
POST http(s)://face-api.shiliuai.com/api/face_liveness/v1
2.2 请求方式
POST
2.3 请求头(header)
| 参数 | 类型 | 说明 |
|---|---|---|
| Content-Type | string | application/json |
| Authorization | string | 'APPCODE ' + 您的AppCode (注意英文空格)获取 |
| 参数 | 类型 | 说明 |
|---|---|---|
| Content-Type | string | application/json |
| x-ca-key | string | 您的AppKey获取 |
| x-ca-timestamp | string | 时间戳(毫秒) |
| x-ca-signature | string | 签名sign,md5(app_key×tamp&app_secret) |
2.4 请求体(body)
| 参数 | 是否必填 | 类型 | 说明 |
|---|---|---|---|
| image_base64 | 必填其中之一 | string | 人脸图片Base64,像素[15,8192],小于20M |
| image_url | string | 人脸图片的url,像素[15,8192],小于20M | |
| thresh | 否 | float | 活体阈值,默认0.8,分数大于阈值判为活体 |
3.返回信息
3.1 返回类型
JSON
3.2 返回码
| 参数名 | 类型 | 说明 |
|---|---|---|
| code | int | 200表示成功 |
| message | string | 返回信息 |
3.3 返回字段
| 参数 | 类型 | 说明 |
|---|---|---|
| code | int | 错误码 |
| msg | string | 错误信息(英文) |
| msg_cn | string | 错误信息(中文) |
| success | bool | 请求是否成功 |
| request_id | string | 唯一请求ID |
| data | object | 活体检测结果 |
3.3.1 data 信息
| 参数 | 类型 | 说明 | 示例 |
|---|---|---|---|
| liveness_score | float | 活体分数[0,1] | 0.93 |
| is_live | bool | 是否判定为活体(分数>阈值) | true |
| risk_reason | string | 风险原因或为空 | "" |
3.4 返回示例
{
"code": 200,
"msg": "ok",
"msg_cn": "成功",
"success": true,
"request_id": "c3f2b18e77",
"data": {
"liveness_score": 0.937,
"is_live": true,
"risk_reason": ""
}
}
3.5 错误码
| 错误码 | 含义 |
|---|---|
| 4001 | 图片为空或格式错误 |
| 4002 | 未检测到人脸 |
| 4004 | 疑似翻拍或攻击,未通过活体 |
| 5000 | 服务内部错误,请稍后重试 |
4.示例代码
4.1 Python
import base64, json, requests
def get_b64(path):
with open(path, "rb") as f:
return base64.b64encode(f.read()).decode()
url = "https://face-api.shiliuai.com/api/face_liveness/v1"
headers = {
"Authorization": "APPCODE 你的APPCODE",
"Content-Type": "application/json"
}
body = {"image_base64": get_b64("face_live.jpg")}
print(requests.post(url, headers=headers, data=json.dumps(body), timeout=10).text)
import base64, json, requests, hashlib, time
def get_b64(path):
with open(path, "rb") as f:
return base64.b64encode(f.read()).decode()
def md5(s): return hashlib.md5(s.encode()).hexdigest()
url = "https://face-api.shiliuai.com/api/face_liveness/v1"
app_key = "你的APPKEY"
app_secret = "你的APPSECRET"
ts = str(int(time.time()*1000))
sign = md5(f"{app_key}&{ts}&{app_secret}")
headers = {
"x-ca-key": app_key,
"x-ca-timestamp": ts,
"x-ca-signature": sign,
"Content-Type": "application/json"
}
body = {"image_base64": get_b64("face_live.jpg")}
print(requests.post(url, headers=headers, data=json.dumps(body), timeout=10).text)
4.2 PHP
get_base64("face_live.jpg")];
$ch = curl_init();
curl_setopt_array($ch, [
CURLOPT_URL => $url,
CURLOPT_POST => true,
CURLOPT_HTTPHEADER => $headers,
CURLOPT_POSTFIELDS => json_encode($data),
CURLOPT_RETURNTRANSFER => true,
CURLOPT_SSL_VERIFYPEER => false
]);
echo curl_exec($ch);
?>
get_base64("face_live.jpg")];
$ch = curl_init();
curl_setopt_array($ch, [
CURLOPT_URL => $url,
CURLOPT_POST => true,
CURLOPT_HTTPHEADER => $headers,
CURLOPT_POSTFIELDS => json_encode($data),
CURLOPT_RETURNTRANSFER => true,
CURLOPT_SSL_VERIFYPEER => false
]);
echo curl_exec($ch);
?>
4.3 Java
import com.alibaba.fastjson2.JSONObject;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.HttpResponse;
import org.apache.http.util.EntityUtils;
import org.apache.commons.io.FileUtils;
import java.io.File;
import java.util.Base64;
import java.util.HashMap;
import java.util.Map;
public class FaceLiveEasy {
static String getBase64(String path) throws Exception {
return Base64.getEncoder().encodeToString(FileUtils.readFileToByteArray(new File(path)));
}
public static void main(String[] args) throws Exception {
String url = "https://face-api.shiliuai.com/api/face_liveness/v1";
Map headers = new HashMap<>();
headers.put("Authorization","APPCODE 你的APPCODE");
headers.put("Content-Type","application/json");
JSONObject req = new JSONObject();
req.put("image_base64", getBase64("face_live.jpg"));
try(CloseableHttpClient client = HttpClients.createDefault()) {
HttpPost post = new HttpPost(url);
headers.forEach(post::addHeader);
post.setEntity(new StringEntity(req.toJSONString(),"UTF-8"));
HttpResponse resp = client.execute(post);
System.out.println(EntityUtils.toString(resp.getEntity(),"UTF-8"));
}
}
}
import com.alibaba.fastjson2.JSONObject;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.HttpResponse;
import org.apache.http.util.EntityUtils;
import org.apache.commons.io.FileUtils;
import java.io.File;
import java.util.Base64;
import java.util.HashMap;
import java.util.Map;
import java.security.MessageDigest;
public class FaceLiveSign {
static String getBase64(String path) throws Exception {
return Base64.getEncoder().encodeToString(FileUtils.readFileToByteArray(new File(path)));
}
static String md5(String s) throws Exception {
MessageDigest md = MessageDigest.getInstance("MD5");
byte[] d = md.digest(s.getBytes("UTF-8"));
StringBuilder sb = new StringBuilder();
for(byte b:d) sb.append(String.format("%02x", b));
return sb.toString();
}
public static void main(String[] args) throws Exception {
String url = "https://face-api.shiliuai.com/api/face_liveness/v1";
String appKey = "你的APPKEY";
String appSecret = "你的APPSECRET";
String ts = String.valueOf(System.currentTimeMillis());
String sign = md5(appKey + "&" + ts + "&" + appSecret);
Map headers = new HashMap<>();
headers.put("x-ca-key", appKey);
headers.put("x-ca-timestamp", ts);
headers.put("x-ca-signature", sign);
headers.put("Content-Type","application/json");
JSONObject req = new JSONObject();
req.put("image_base64", getBase64("face_live.jpg"));
try(CloseableHttpClient client = HttpClients.createDefault()) {
HttpPost post = new HttpPost(url);
headers.forEach(post::addHeader);
post.setEntity(new StringEntity(req.toJSONString(),"UTF-8"));
HttpResponse resp = client.execute(post);
System.out.println(EntityUtils.toString(resp.getEntity(),"UTF-8"));
}
}
}
4.4 JavaScript
// 需 Node.js 18+(内置 fetch)
const fs = require('fs');
const apiUrl = 'https://face-api.shiliuai.com/api/face_liveness/v1';
const appcode = '你的APPCODE';
const filePath = 'face_live.jpg';
async function main() {
const imageBase64 = fs.readFileSync(filePath).toString('base64');
const res = await fetch(apiUrl, {
method: 'POST',
headers: {
Authorization: 'APPCODE ' + appcode,
'Content-Type': 'application/json'
},
body: JSON.stringify({ image_base64: imageBase64 })
});
const text = await res.text();
console.log(text);
}
main().catch(console.error);
// 需 Node.js 18+(内置 fetch)
const fs = require('fs');
const crypto = require('crypto');
const apiUrl = 'https://face-api.shiliuai.com/api/face_liveness/v1';
const filePath = 'face_live.jpg';
const appKey = '你的APPKEY';
const appSecret = '你的APPSECRET';
const timestamp = Date.now().toString();
const signHex = crypto.createHash('md5').update(appKey + '&' + timestamp + '&' + appSecret).digest('hex');
async function main() {
const imageBase64 = fs.readFileSync(filePath).toString('base64');
const res = await fetch(apiUrl, {
method: 'POST',
headers: {
'Content-Type': 'application/json',
'x-ca-key': appKey,
'x-ca-timestamp': timestamp,
'x-ca-signature': signHex
},
body: JSON.stringify({ image_base64: imageBase64 })
});
const text = await res.text();
console.log(text);
}
main().catch(console.error);
4.5 C#
using System;
using System.Net.Http;
using System.Text;
using Newtonsoft.Json.Linq;
using System.IO;
class FaceLiveEasy {
static string GetBase64(string path) => Convert.ToBase64String(File.ReadAllBytes(path));
static async System.Threading.Tasks.Task Main() {
var url = "https://face-api.shiliuai.com/api/face_liveness/v1";
var client = new HttpClient();
client.DefaultRequestHeaders.Add("Authorization","APPCODE 你的APPCODE");
var body = new JObject { ["image_base64"] = GetBase64("face_live.jpg") }.ToString();
var resp = await client.PostAsync(url, new StringContent(body, Encoding.UTF8, "application/json"));
Console.WriteLine(await resp.Content.ReadAsStringAsync());
}
}
using System;
using System.Net.Http;
using System.Text;
using Newtonsoft.Json.Linq;
using System.IO;
using System.Security.Cryptography;
class FaceLiveSign {
static string GetBase64(string path) => Convert.ToBase64String(File.ReadAllBytes(path));
static string Md5(string s){
using var md5 = MD5.Create();
var bytes = md5.ComputeHash(Encoding.UTF8.GetBytes(s));
var sb = new StringBuilder();
foreach(var b in bytes) sb.Append(b.ToString("x2"));
return sb.ToString();
}
static async System.Threading.Tasks.Task Main() {
var url = "https://face-api.shiliuai.com/api/face_liveness/v1";
var appKey = "你的APPKEY";
var appSecret = "你的APPSECRET";
var ts = DateTimeOffset.Now.ToUnixTimeMilliseconds().ToString();
var sign = Md5($"{appKey}&{ts}&{appSecret}");
var client = new HttpClient();
client.DefaultRequestHeaders.Add("x-ca-key", appKey);
client.DefaultRequestHeaders.Add("x-ca-timestamp", ts);
client.DefaultRequestHeaders.Add("x-ca-signature", sign);
var body = new JObject { ["image_base64"] = GetBase64("face_live.jpg") }.ToString();
var resp = await client.PostAsync(url, new StringContent(body, Encoding.UTF8, "application/json"));
Console.WriteLine(await resp.Content.ReadAsStringAsync());
}
}
4.6 易语言
版本 2
.支持库 spec
.支持库 dp1
.子程序 OCR_简单认证
.局部变量 局_网址, 文本型
.局部变量 局_提交数据, 文本型
.局部变量 局_提交协议头, 文本型
.局部变量 局_结果, 字节集
.局部变量 局_返回, 文本型
.局部变量 图片数据, 字节集
.局部变量 base64图片, 文本型
图片数据 = 读入文件 ("你的文件路径")
base64图片 = 编码_BASE64编码 (图片数据)
局_提交数据 = "{" + #引号 + "image_base64" + #引号 + ":" + #引号 + base64图片 + #引号 + "}"
局_网址 = "https://face-api.shiliuai.com/api/face_liveness/v1"
局_提交协议头 = "Authorization: APPCODE 你的AppCode" + #换行符 + "Content-Type: application/json"
局_结果 = 网页_访问_对象 (局_网址, 1, 局_提交数据, , , 局_提交协议头, , , , , , , , , , , , , )
局_返回 = 到文本 (编码_编码转换对象 (局_结果, , , ))
返回 (局_返回)
版本 2
.支持库 spec
.支持库 dp1
.子程序 OCR_签名认证
.参数 app_key, 文本型
.参数 app_secret, 文本型
.参数 文件路径, 文本型
.局部变量 局_网址, 文本型
.局部变量 局_提交数据, 文本型
.局部变量 局_提交协议头, 文本型
.局部变量 局_结果, 字节集
.局部变量 局_返回, 文本型
.局部变量 文件数据, 字节集
.局部变量 base64文件, 文本型
.局部变量 时间戳, 文本型
.局部变量 签名字符串, 文本型
.局部变量 签名, 文本型
文件数据 = 读入文件 (文件路径)
base64文件 = 编码_BASE64编码 (文件数据)
时间戳 = 到文本 (时间_取时间戳 () * 1000)
签名字符串 = app_key + "&" + 时间戳 + "&" + app_secret
签名 = 到十六进制文本 (编码_MD5摘要 (到字节集 (签名字符串)))
局_提交数据 = "{" + #引号 + "image_base64" + #引号 + ":" + #引号 + base64文件 + #引号 + "}"
局_网址 = "https://face-api.shiliuai.com/api/face_liveness/v1"
局_提交协议头 = "x-ca-key: " + app_key + #换行符 + "x-ca-timestamp: " + 时间戳 + #换行符 + "x-ca-signature: " + 签名 + #换行符 + "Content-Type: application/json"
局_结果 = 网页_访问_对象 (局_网址, 1, 局_提交数据, , , 局_提交协议头, , , , , , , , , , , , , )
局_返回 = 到文本 (编码_编码转换对象 (局_结果, , , ))
返回 (局_返回)
4.7 天诺
public static string OCR_Easy(Image image, string appcode)
{
string url = "https://face-api.shiliuai.com/api/face_liveness/v1";
var headers = new Dictionary<string, string>
{
{"Authorization", "APPCODE " + appcode},
{"Content-Type", "application/json"}
};
string body = "{\"image_base64\":\"" + CustomHelp.ImageTobase64(image) + "\"}";
return CustomHelp.HttpPost(url, body, headers);
}
public static string app_key = "你的APPKEY";
public static string app_secret = "你的APPSECRET";
public static string GetTimestampMs()
{
return DateTimeOffset.Now.ToUnixTimeMilliseconds().ToString();
}
public static string MD5(string input)
{
using (var md5 = System.Security.Cryptography.MD5.Create())
{
var bytes = System.Text.Encoding.UTF8.GetBytes(input);
var hash = md5.ComputeHash(bytes);
var sb = new System.Text.StringBuilder();
foreach (var b in hash) sb.Append(b.ToString("x2"));
return sb.ToString();
}
}
public static string OCR_Sign(Image image)
{
string url = "https://face-api.shiliuai.com/api/face_liveness/v1";
string timestamp = GetTimestampMs();
string sign = MD5(app_key + "&" + timestamp + "&" + app_secret);
var headers = new Dictionary<string, string>
{
{"x-ca-key", app_key},
{"x-ca-timestamp", timestamp},
{"x-ca-signature", sign},
{"Content-Type", "application/json"}
};
string body = "{\"image_base64\":\"" + CustomHelp.ImageTobase64(image) + "\"}";
return CustomHelp.HttpPost(url, body, headers);
}
4.8 按键精灵-电脑版
Import "Encrypt.dll"
VBSBegin
Function Base64Encode(filePath)
Set inStream = CreateObject("ADODB.Stream")
inStream.Type = 1
inStream.Open
inStream.LoadFromFile filePath
inStream.Position = 0
Set dom = CreateObject("MSXML2.DOMDocument")
Set elem = dom.createElement("tmp")
elem.dataType = "bin.base64"
elem.nodeTypedValue = inStream.Read
Base64Encode = elem.Text
inStream.Close
End Function
Function ocr_easy(appcode, imgPath)
url = "https://face-api.shiliuai.com/api/face_liveness/v1"
jsonBody = "{\"image_base64\":\"" & Base64Encode(imgPath) & "\"}"
Set http = CreateObject("MSXML2.XMLHTTP")
http.Open "POST", url, False
http.setRequestHeader "Authorization", "APPCODE " & appcode
http.setRequestHeader "Content-Type", "application/json"
http.send jsonBody
ocr_easy = http.responseText
End Function
VBSEnd
appcode = "你的APPCODE"
res = ocr_easy(appcode, "你的文件路径")
TracePrint res
Import "Encrypt.dll"
VBSBegin
Function MD5(str)
MD5 = LCase(Encrypt.Md5String(str))
End Function
Function Base64Encode(filePath)
Set inStream = CreateObject("ADODB.Stream")
inStream.Type = 1
inStream.Open
inStream.LoadFromFile filePath
inStream.Position = 0
Set dom = CreateObject("MSXML2.DOMDocument")
Set elem = dom.createElement("tmp")
elem.dataType = "bin.base64"
elem.nodeTypedValue = inStream.Read
Base64Encode = elem.Text
inStream.Close
End Function
Function ocr_sign(appKey, appSecret, imgPath)
url = "https://face-api.shiliuai.com/api/face_liveness/v1"
timestamp = CStr(DateDiff("s", "01/01/1970 00:00:00", Now()) * 1000)
signature = MD5(appKey & "&" & timestamp & "&" & appSecret)
jsonBody = "{\"image_base64\":\"" & Base64Encode(imgPath) & "\"}"
Set http = CreateObject("MSXML2.XMLHTTP")
http.Open "POST", url, False
http.setRequestHeader "x-ca-key", appKey
http.setRequestHeader "x-ca-timestamp", timestamp
http.setRequestHeader "x-ca-signature", signature
http.setRequestHeader "Content-Type", "application/json"
http.send jsonBody
ocr_sign = http.responseText
End Function
VBSEnd
appKey = "你的APPKEY"
appSecret = "你的APPSECRET"
res = ocr_sign(appKey, appSecret, "你的文件路径")
TracePrint res
4.9 按键精灵-手机版
Import "yd.luae"
Import "zm.luae"
Dim imagePath = "/sdcard/Pictures/test.png"
SnapShotEx imagePath
Function ocr_easy(appcode, imagePath)
Dim url = "https://face-api.shiliuai.com/api/face_liveness/v1"
Dim body = "{\"image_base64\":\"" & yd.Base64EncodeFile(imagePath) & "\"}"
Dim headers = {null}
headers["Authorization"] = "APPCODE " & appcode
headers["Content-Type"] = "application/json"
Dim res = yd.HttpPost(url, body, headers)
ocr_easy = yd.JsonDecode(res)
End Function
Dim appcode = "你的 APPCODE"
Dim t1 = TickCount()
Dim res = ocr_easy(appcode, imagePath)
Dim t2 = TickCount()
TracePrint res["code"]
Import "yd.luae"
Import "zm.luae"
Dim imagePath = "/sdcard/Pictures/test.png"
SnapShotEx imagePath
Dim appKey = "你的 APPKEY"
Dim appSecret = "你的 APPSECRET"
Function ocr_sign(appKey, appSecret, imagePath)
Dim url = "https://face-api.shiliuai.com/api/face_liveness/v1"
Dim timestamp = CStr(os.time()*1000)
Dim signature = Encode.Md5(appKey & "&" & timestamp & "&" & appSecret)
Dim body = "{\"image_base64\":\"" & yd.Base64EncodeFile(imagePath) & "\"}"
Dim headers = {null}
headers["x-ca-key"] = appKey
headers["x-ca-timestamp"] = timestamp
headers["x-ca-signature"] = signature
headers["Content-Type"] = "application/json"
Dim res = yd.HttpPost(url, body, headers)
ocr_sign = yd.JsonDecode(res)
End Function
Dim t1 = TickCount()
Dim res = ocr_sign(appKey, appSecret, imagePath)
Dim t2 = TickCount()
TracePrint res["code"]
4.10 触动精灵
require("tsnet")
require "TSLib"
local ts = require("ts")
local json = ts.json
function readFileBase64(path)
local f = io.open(path,"rb")
if not f then return nil end
local bytes = f:read("*all")
f:close()
return bytes:base64_encode()
end
function ocr_easy(appcode, imagePath)
local url = "https://face-api.shiliuai.com/api/face_liveness/v1"
local body = json.encode({ image_base64 = readFileBase64(imagePath) })
local headers = {}
headers["Authorization"] = "APPCODE " .. appcode
headers["Content-Type"] = "application/json"
local resp = httpPost(url, body, { headers = headers })
return json.decode(resp)
end
require("tsnet")
require "TSLib"
local ts = require("ts")
local json = ts.json
function readFileBase64(path)
local f = io.open(path,"rb")
if not f then return nil end
local bytes = f:read("*all")
f:close()
return bytes:base64_encode()
end
function ocr_sign(appKey, appSecret, imagePath)
local url = "https://face-api.shiliuai.com/api/face_liveness/v1"
local timestamp = tostring(os.time()*1000)
local signature = (appKey.."&"..timestamp.."&"..appSecret):md5()
local body = json.encode({ image_base64 = readFileBase64(imagePath) })
local headers = {}
headers["x-ca-key"] = appKey
headers["x-ca-timestamp"] = timestamp
headers["x-ca-signature"] = signature
headers["Content-Type"] = "application/json"
local resp = httpPost(url, body, { headers = headers })
return json.decode(resp)
end
4.11 懒人精灵
function ocr_easy(appcode, imagePath)
local url = "https://face-api.shiliuai.com/api/face_liveness/v1"
local body = jsonLib.encode({ image_base64 = getFileBase64(imagePath) })
local headers = {}
headers["Authorization"] = "APPCODE " .. appcode
headers["Content-Type"] = "application/json"
local resp = httpPost(url, body, { headers = headers })
return jsonLib.decode(resp)
end
function ocr_sign(appKey, appSecret, imagePath)
local url = "https://face-api.shiliuai.com/api/face_liveness/v1"
local timestamp = tostring(os.time()*1000)
local signature = MD5(appKey.."&"..timestamp.."&"..appSecret)
local body = jsonLib.encode({ image_base64 = getFileBase64(imagePath) })
local headers = {}
headers["x-ca-key"] = appKey
headers["x-ca-timestamp"] = timestamp
headers["x-ca-signature"] = signature
headers["Content-Type"] = "application/json"
local resp = httpPost(url, body, { headers = headers })
return jsonLib.decode(resp)
end
4.12 EasyClick
function main()
local request = image.requestScreenCapture(10000, 0)
if not request then
request = image.requestScreenCapture(10000, 0)
end
local appCode = "你的 APPCODE"
local img = image.captureFullScreenEx()
local res = ocr_easy(appCode, img)
logd(res.code)
end
function ocr_easy(appCode, img)
local url = "https://face-api.shiliuai.com/api/face_liveness/v1"
local imgBase64 = image.toBase64Format(img, "jpg", 100)
image.recycle(img)
local body = JSON.stringify({ image_base64 = imgBase64 })
local params = {
url = url,
method = "POST",
headers = {
["Authorization"] = "APPCODE " .. appCode,
["Content-Type"] = "application/json"
},
requestBody = body
}
local res = http.request(params)
return JSON.parse(res.body)
end
function main()
local request = image.requestScreenCapture(10000, 0)
if not request then
request = image.requestScreenCapture(10000, 0)
end
local appKey = "你的 APPKEY"
local appSecret = "你的 APPSECRET"
local img = image.captureFullScreenEx()
local res = ocr_sign(appKey, appSecret, img)
logd(res.code)
end
function ocr_sign(appKey, appSecret, img)
local url = "https://face-api.shiliuai.com/api/face_liveness/v1"
local imgBase64 = image.toBase64Format(img, "jpg", 100)
local timestamp = tostring(os.time() * 1000)
local signature = utils.dataMd5(appKey .. "&" .. timestamp .. "&" .. appSecret)
image.recycle(img)
local body = JSON.stringify({ image_base64 = imgBase64 })
local params = {
url = url,
method = "POST",
headers = {
["x-ca-key"] = appKey,
["x-ca-timestamp"] = timestamp,
["x-ca-signature"] = signature,
["Content-Type"] = "application/json"
},
requestBody = body
}
local res = http.request(params)
return JSON.parse(res.body)
end