postman +腾讯电子签

postman.setGlobalVariable("Timestamp", Date.parse(new Date()) / 1000);
postman.setGlobalVariable("Nonce", Date.parse(new Date()) / 1000);
//正式环境
//Service = request.url.replace(/https:\/\//, "").replace(/\.tencentcloudapi\.com\//, "")
//测试环境
Service = request.url.replace(/https:\/\//, "").replace(/\.test\.ess\.tencent\.cn\//, "")
if (request.headers["x-tc-service"]) {
    Service = request.headers["x-tc-service"]
}
console.log("Service:"+Service);

if (request.method == "GET") {
    payload = ""
    CanonicalQueryString = ""
}else if(request.method == "POST"){
    payload = request.data
    CanonicalQueryString = ""
}

var reg = /^http(s)?:\/\/(.*?)\//
HashedRequestPayload = CryptoJS.SHA256(payload).toString(CryptoJS.enc.Hex);
CanonicalURI = "/";
HTTPRequestMethod = request.method
CanonicalHeaders = "content-type:application/json\nhost:" + reg.exec(request.url)[2] + "\n"
SignedHeaders = "content-type;host"

CanonicalRequest = "" + 
    HTTPRequestMethod + '\n' +
    CanonicalURI + '\n' +
    CanonicalQueryString + '\n' +
    CanonicalHeaders + '\n' +
    SignedHeaders + '\n' +
    HashedRequestPayload


Algorithm = "TC3-HMAC-SHA256";
RequestTimestamp = postman.getGlobalVariable("Timestamp")
Date1 = new Date().toISOString().split('T')[0]
CredentialScope = Date1 + "/" + Service + "/" + "tc3_request"
HashedCanonicalRequest =  CryptoJS.SHA256(CanonicalRequest).toString(CryptoJS.enc.Hex)

StringToSign =
    Algorithm + "\n" +
    RequestTimestamp + "\n" +
    CredentialScope + "\n" +
    HashedCanonicalRequest
  
// SecretKey = ""
SecretKey = postman.getGlobalVariable("SecretKey")
console.log("SecretKey:"+SecretKey);
SecretDate = CryptoJS.HmacSHA256(Date1, "TC3" + SecretKey)

SecretService = CryptoJS.HmacSHA256(Service, SecretDate)
SecretSigning = CryptoJS.HmacSHA256("tc3_request", SecretService)

Signature = CryptoJS.HmacSHA256(StringToSign, SecretSigning).toString(CryptoJS.enc.Hex)
postman.setGlobalVariable("Signature", Signature);
SecretId = postman.getGlobalVariable("SecretId")
console.log("SecretId:"+SecretId);

Authorization =
    Algorithm + ' ' +
    'Credential=' + SecretId + '/' + CredentialScope + ', ' +
    'SignedHeaders=' + SignedHeaders + ', ' + 
    'Signature=' + Signature
    
postman.setGlobalVariable("Authorization", Authorization);    

console.log("Authorization:"+Authorization);