SMSおよび音声Authenticatorの登録とチャレンジ

Auth0は、ユニバーサルログインを使用した組み込みのMFA登録と認証フローを提供します。ただし、独自のインターフェイスを作成したい場合は、MFA APIを使用することもできます。

前提条件

MFA APIを使用するには、事前にアプリケーションに対してMFAの付与タイプを有効にする必要があります。［Auth0 Dashboard］>［Applications（アプリケーション）］>［Advanced Settings（詳細設定）］>［Grant Types（付与タイプ）］に移動し、［MFA］を選択します。

DashboardまたはManagement APIを使って電話を要素として構成します。

SMSまたは音声で登録する

MFAトークンを取得する

登録をトリガーするタイミングによっては、以下のような方法で、MFA APIを使用するためのアクセストークンを取得できます。

認証中に登録する場合は、「リソース所有者のパスワード付与とMFAで認証する」を参照してください。
ユーザーがいつでも要素を登録できるようにする場合は、「MFA要素の登録を管理する」を参照してください。

Authenticatorを登録する

ユーザーの鑑別工具を登録するには、MFA Associateエンドポイントに POST要求を送信します。このエンドポイントに必要なベアラートークンは、前の手順で取得したMFAトークンです。

SMSや音声で登録するには、SMSまたは音声でチャレンジできる電話番号を使って登録します。以下のパラメーターを指定してエンドポイントを呼び出します。oob_channelsパラメーターは、ユーザーにコードを送信する方法（SMSまたは音声）を指定します。

cURL
C#
Go
Java
Node.JS
Obj-C
...

curl --request POST \
  --url 'https://{yourDomain}/mfa/associate' \
  --header 'authorization: Bearer {mfaToken}' \
  --header 'content-type: application/json' \
  --data '{ "authenticator_types": ["oob"], "oob_channels": ["sms"], "phone_number": "+11...9" }'

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var client = new RestClient("https://{yourDomain}/mfa/associate");
var request = new RestRequest(Method.POST);
request.AddHeader("authorization", "Bearer {mfaToken}");
request.AddHeader("content-type", "application/json");
request.AddParameter("application/json", "{ \"authenticator_types\": [\"oob\"], \"oob_channels\": [\"sms\"], \"phone_number\": \"+11...9\" }", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);

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package main

import (
	"fmt"
	"strings"
	"net/http"
	"io/ioutil"
)

func main() {

	url := "https://{yourDomain}/mfa/associate"

	payload := strings.NewReader("{ \"authenticator_types\": [\"oob\"], \"oob_channels\": [\"sms\"], \"phone_number\": \"+11...9\" }")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("authorization", "Bearer {mfaToken}")
	req.Header.Add("content-type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := ioutil.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}

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HttpResponse<String> response = Unirest.post("https://{yourDomain}/mfa/associate")
  .header("authorization", "Bearer {mfaToken}")
  .header("content-type", "application/json")
  .body("{ \"authenticator_types\": [\"oob\"], \"oob_channels\": [\"sms\"], \"phone_number\": \"+11...9\" }")
  .asString();

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var axios = require("axios").default;

var options = {
  method: 'POST',
  url: 'https://{yourDomain}/mfa/associate',
  headers: {authorization: 'Bearer {mfaToken}', 'content-type': 'application/json'},
  data: {authenticator_types: ['oob'], oob_channels: ['sms'], phone_number: '+11...9'}
};

axios.request(options).then(function (response) {
  console.log(response.data);
}).catch(function (error) {
  console.error(error);
});

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#import <Foundation/Foundation.h>

NSDictionary *headers = @{ @"authorization": @"Bearer {mfaToken}",
                           @"content-type": @"application/json" };
NSDictionary *parameters = @{ @"authenticator_types": @[ @"oob" ],
                              @"oob_channels": @[ @"sms" ],
                              @"phone_number": @"+11...9" };

NSData *postData = [NSJSONSerialization dataWithJSONObject:parameters options:0 error:nil];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"https://{yourDomain}/mfa/associate"]
                                                       cachePolicy:NSURLRequestUseProtocolCachePolicy
                                                   timeoutInterval:10.0];
[request setHTTPMethod:@"POST"];
[request setAllHTTPHeaderFields:headers];
[request setHTTPBody:postData];

NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionDataTask *dataTask = [session dataTaskWithRequest:request
                                            completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
                                                if (error) {
                                                    NSLog(@"%@", error);
                                                } else {
                                                    NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *) response;
                                                    NSLog(@"%@", httpResponse);
                                                }
                                            }];
[dataTask resume];

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$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://{yourDomain}/mfa/associate",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => "{ \"authenticator_types\": [\"oob\"], \"oob_channels\": [\"sms\"], \"phone_number\": \"+11...9\" }",
  CURLOPT_HTTPHEADER => [
    "authorization: Bearer {mfaToken}",
    "content-type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

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import http.client

conn = http.client.HTTPSConnection("")

payload = "{ \"authenticator_types\": [\"oob\"], \"oob_channels\": [\"sms\"], \"phone_number\": \"+11...9\" }"

headers = {
    'authorization': "Bearer {mfaToken}",
    'content-type': "application/json"
    }

conn.request("POST", "/{yourDomain}/mfa/associate", payload, headers)

res = conn.getresponse()
data = res.read()

print(data.decode("utf-8"))

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require 'uri'
require 'net/http'
require 'openssl'

url = URI("https://{yourDomain}/mfa/associate")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
http.verify_mode = OpenSSL::SSL::VERIFY_NONE

request = Net::HTTP::Post.new(url)
request["authorization"] = 'Bearer {mfaToken}'
request["content-type"] = 'application/json'
request.body = "{ \"authenticator_types\": [\"oob\"], \"oob_channels\": [\"sms\"], \"phone_number\": \"+11...9\" }"

response = http.request(request)
puts response.read_body

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import Foundation

let headers = [
  "authorization": "Bearer {mfaToken}",
  "content-type": "application/json"
]
let parameters = [
  "authenticator_types": ["oob"],
  "oob_channels": ["sms"],
  "phone_number": "+11...9"
] as [String : Any]

let postData = JSONSerialization.data(withJSONObject: parameters, options: [])

let request = NSMutableURLRequest(url: NSURL(string: "https://{yourDomain}/mfa/associate")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()

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パラメーター	値
`authentication_types`	`[oob]`
`oob_channels`	`[sms]`または`[voice]`
`phone_number`	`+11...9`、E.164形式の電話番号

成功すると、次のような応答を受け取ります：

{
  "authenticator_type": "oob",
  "binding_method": "prompt",
  "recovery_codes": [ "N3BGPZZWJ85JLCNPZBDW6QXC" ],
  "oob_channel": "sms",
  "oob_code": "ata6daXAiOi..."
}
`

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「User is already enrolled（ユーザーは登録済みです）」というエラーメッセージを受け取った場合、そのユーザーはすでにMFA要素を登録済みです。このユーザーに対して別の要素を関連付ける前に、既存の要素を使ってユーザーにチャレンジする必要があります。

ユーザーが鑑別工具を初めて関連付けている場合は、応答にrecovery_codesが含まれます。復旧コードは、ユーザーが第二の認証要素であるアカウントやデバイスにアクセスできなくなったときに、ユーザーのアカウントにアクセスするために使用されます。このコードは1回しか使用できず、必要に応じて新しいコードが生成されます。

SMSまたは音声の登録を確定する

ユーザーは、アプリケーションに提供しなければならない6桁のコードが記載されたメッセージを受信します。

登録を完了するには、OAuthトークンエンドポイントにPOST要求を行います。メッセージで受け取った値とともに、前の応答で返されたoob_codeとbinding_codeを含める必要があります。

cURL
C#
Go
Java
Node.JS
Obj-C
...

curl --request POST \
  --url 'https://{yourDomain}/oauth/token' \
  --header 'authorization: Bearer {mfaToken}' \
  --header 'content-type: application/x-www-form-urlencoded' \
  --data grant_type=http://auth0.com/oauth/grant-type/mfa-oob \
  --data 'client_id={yourClientId}' \
  --data 'client_secret={yourClientSecret}' \
  --data 'mfa_token={mfaToken}' \
  --data 'oob_code={oobCode}' \
  --data 'binding_code={userOtpCode}'

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var client = new RestClient("https://{yourDomain}/oauth/token");
var request = new RestRequest(Method.POST);
request.AddHeader("authorization", "Bearer {mfaToken}");
request.AddHeader("content-type", "application/x-www-form-urlencoded");
request.AddParameter("application/x-www-form-urlencoded", "grant_type=http%3A%2F%2Fauth0.com%2Foauth%2Fgrant-type%2Fmfa-oob&client_id={yourClientId}&client_secret=%7ByourClientSecret%7D&mfa_token=%7BmfaToken%7D&oob_code=%7BoobCode%7D&binding_code=%7BuserOtpCode%7D", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);

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package main

import (
	"fmt"
	"strings"
	"net/http"
	"io/ioutil"
)

func main() {

	url := "https://{yourDomain}/oauth/token"

	payload := strings.NewReader("grant_type=http%3A%2F%2Fauth0.com%2Foauth%2Fgrant-type%2Fmfa-oob&client_id={yourClientId}&client_secret=%7ByourClientSecret%7D&mfa_token=%7BmfaToken%7D&oob_code=%7BoobCode%7D&binding_code=%7BuserOtpCode%7D")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("authorization", "Bearer {mfaToken}")
	req.Header.Add("content-type", "application/x-www-form-urlencoded")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := ioutil.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}

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HttpResponse<String> response = Unirest.post("https://{yourDomain}/oauth/token")
  .header("authorization", "Bearer {mfaToken}")
  .header("content-type", "application/x-www-form-urlencoded")
  .body("grant_type=http%3A%2F%2Fauth0.com%2Foauth%2Fgrant-type%2Fmfa-oob&client_id={yourClientId}&client_secret=%7ByourClientSecret%7D&mfa_token=%7BmfaToken%7D&oob_code=%7BoobCode%7D&binding_code=%7BuserOtpCode%7D")
  .asString();

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var axios = require("axios").default;

var options = {
  method: 'POST',
  url: 'https://{yourDomain}/oauth/token',
  headers: {
    authorization: 'Bearer {mfaToken}',
    'content-type': 'application/x-www-form-urlencoded'
  },
  data: new URLSearchParams({
    grant_type: 'http://auth0.com/oauth/grant-type/mfa-oob',
    client_id: '{yourClientId}',
    client_secret: '{yourClientSecret}',
    mfa_token: '{mfaToken}',
    oob_code: '{oobCode}',
    binding_code: '{userOtpCode}'
  })
};

axios.request(options).then(function (response) {
  console.log(response.data);
}).catch(function (error) {
  console.error(error);
});

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#import <Foundation/Foundation.h>

NSDictionary *headers = @{ @"authorization": @"Bearer {mfaToken}",
                           @"content-type": @"application/x-www-form-urlencoded" };

NSMutableData *postData = [[NSMutableData alloc] initWithData:[@"grant_type=http://auth0.com/oauth/grant-type/mfa-oob" dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[@"&client_id={yourClientId}" dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[@"&client_secret={yourClientSecret}" dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[@"&mfa_token={mfaToken}" dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[@"&oob_code={oobCode}" dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[@"&binding_code={userOtpCode}" dataUsingEncoding:NSUTF8StringEncoding]];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"https://{yourDomain}/oauth/token"]
                                                       cachePolicy:NSURLRequestUseProtocolCachePolicy
                                                   timeoutInterval:10.0];
[request setHTTPMethod:@"POST"];
[request setAllHTTPHeaderFields:headers];
[request setHTTPBody:postData];

NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionDataTask *dataTask = [session dataTaskWithRequest:request
                                            completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
                                                if (error) {
                                                    NSLog(@"%@", error);
                                                } else {
                                                    NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *) response;
                                                    NSLog(@"%@", httpResponse);
                                                }
                                            }];
[dataTask resume];

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$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://{yourDomain}/oauth/token",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => "grant_type=http%3A%2F%2Fauth0.com%2Foauth%2Fgrant-type%2Fmfa-oob&client_id={yourClientId}&client_secret=%7ByourClientSecret%7D&mfa_token=%7BmfaToken%7D&oob_code=%7BoobCode%7D&binding_code=%7BuserOtpCode%7D",
  CURLOPT_HTTPHEADER => [
    "authorization: Bearer {mfaToken}",
    "content-type: application/x-www-form-urlencoded"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

Was this helpful?

import http.client

conn = http.client.HTTPSConnection("")

payload = "grant_type=http%3A%2F%2Fauth0.com%2Foauth%2Fgrant-type%2Fmfa-oob&client_id={yourClientId}&client_secret=%7ByourClientSecret%7D&mfa_token=%7BmfaToken%7D&oob_code=%7BoobCode%7D&binding_code=%7BuserOtpCode%7D"

headers = {
    'authorization': "Bearer {mfaToken}",
    'content-type': "application/x-www-form-urlencoded"
    }

conn.request("POST", "/{yourDomain}/oauth/token", payload, headers)

res = conn.getresponse()
data = res.read()

print(data.decode("utf-8"))

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require 'uri'
require 'net/http'
require 'openssl'

url = URI("https://{yourDomain}/oauth/token")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
http.verify_mode = OpenSSL::SSL::VERIFY_NONE

request = Net::HTTP::Post.new(url)
request["authorization"] = 'Bearer {mfaToken}'
request["content-type"] = 'application/x-www-form-urlencoded'
request.body = "grant_type=http%3A%2F%2Fauth0.com%2Foauth%2Fgrant-type%2Fmfa-oob&client_id={yourClientId}&client_secret=%7ByourClientSecret%7D&mfa_token=%7BmfaToken%7D&oob_code=%7BoobCode%7D&binding_code=%7BuserOtpCode%7D"

response = http.request(request)
puts response.read_body

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import Foundation

let headers = [
  "authorization": "Bearer {mfaToken}",
  "content-type": "application/x-www-form-urlencoded"
]

let postData = NSMutableData(data: "grant_type=http://auth0.com/oauth/grant-type/mfa-oob".data(using: String.Encoding.utf8)!)
postData.append("&client_id={yourClientId}".data(using: String.Encoding.utf8)!)
postData.append("&client_secret={yourClientSecret}".data(using: String.Encoding.utf8)!)
postData.append("&mfa_token={mfaToken}".data(using: String.Encoding.utf8)!)
postData.append("&oob_code={oobCode}".data(using: String.Encoding.utf8)!)
postData.append("&binding_code={userOtpCode}".data(using: String.Encoding.utf8)!)

let request = NSMutableURLRequest(url: NSURL(string: "https://{yourDomain}/oauth/token")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()

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呼び出しが成功すると、アクセストークンを含む応答が以下の形式で返されます。

{
  "id_token": "eyJ...i",
  "access_token": "eyJ...i",
  "expires_in": 600,
  "scope": "openid profile",
  "token_type": "Bearer"
}

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SMSまたは音声でチャレンジする

MFAトークンを取得する

「リソース所有者のパスワード付与とMFAで認証する」で説明されている手順に従ってMFAトークンを取得します。

登録されているAuthenticatorを取得する

ユーザーにチャレンジするには、チャレンジしたい要素のauthenticator_idが必要です。登録された全Authenticatorの一覧は、MFA Authenticatorエンドポイントを使って表示できます：

cURL
C#
Go
Java
Node.JS
Obj-C
...

curl --request GET \
  --url 'https://{yourDomain}/mfa/authenticators' \
  --header 'authorization: Bearer MFA_TOKEN' \
  --header 'content-type: application/json'

Was this helpful?

var client = new RestClient("https://{yourDomain}/mfa/authenticators");
var request = new RestRequest(Method.GET);
request.AddHeader("authorization", "Bearer MFA_TOKEN");
request.AddHeader("content-type", "application/json");
IRestResponse response = client.Execute(request);

Was this helpful?

package main

import (
	"fmt"
	"net/http"
	"io/ioutil"
)

func main() {

	url := "https://{yourDomain}/mfa/authenticators"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("authorization", "Bearer MFA_TOKEN")
	req.Header.Add("content-type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := ioutil.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}

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HttpResponse<String> response = Unirest.get("https://{yourDomain}/mfa/authenticators")
  .header("authorization", "Bearer MFA_TOKEN")
  .header("content-type", "application/json")
  .asString();

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var axios = require("axios").default;

var options = {
  method: 'GET',
  url: 'https://{yourDomain}/mfa/authenticators',
  headers: {authorization: 'Bearer MFA_TOKEN', 'content-type': 'application/json'}
};

axios.request(options).then(function (response) {
  console.log(response.data);
}).catch(function (error) {
  console.error(error);
});

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#import <Foundation/Foundation.h>

NSDictionary *headers = @{ @"authorization": @"Bearer MFA_TOKEN",
                           @"content-type": @"application/json" };

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"https://{yourDomain}/mfa/authenticators"]
                                                       cachePolicy:NSURLRequestUseProtocolCachePolicy
                                                   timeoutInterval:10.0];
[request setHTTPMethod:@"GET"];
[request setAllHTTPHeaderFields:headers];

NSURLSession *session = [NSURLSession sharedSession];
NSURLSessionDataTask *dataTask = [session dataTaskWithRequest:request
                                            completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
                                                if (error) {
                                                    NSLog(@"%@", error);
                                                } else {
                                                    NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *) response;
                                                    NSLog(@"%@", httpResponse);
                                                }
                                            }];
[dataTask resume];

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$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://{yourDomain}/mfa/authenticators",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "authorization: Bearer MFA_TOKEN",
    "content-type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

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import http.client

conn = http.client.HTTPSConnection("")

headers = {
    'authorization': "Bearer MFA_TOKEN",
    'content-type': "application/json"
    }

conn.request("GET", "/{yourDomain}/mfa/authenticators", headers=headers)

res = conn.getresponse()
data = res.read()

print(data.decode("utf-8"))

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require 'uri'
require 'net/http'
require 'openssl'

url = URI("https://{yourDomain}/mfa/authenticators")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
http.verify_mode = OpenSSL::SSL::VERIFY_NONE

request = Net::HTTP::Get.new(url)
request["authorization"] = 'Bearer MFA_TOKEN'
request["content-type"] = 'application/json'

response = http.request(request)
puts response.read_body

Was this helpful?

import Foundation

let headers = [
  "authorization": "Bearer MFA_TOKEN",
  "content-type": "application/json"
]

let request = NSMutableURLRequest(url: NSURL(string: "https://{yourDomain}/mfa/authenticators")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"
request.allHTTPHeaderFields = headers

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()

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Authenticatorのリストが以下の形式で返されます。

[
    {
        "id": "recovery-code|dev_O4KYL4FtcLAVRsCl",
        "authenticator_type": "recovery-code",
        "active": true
    },
    {
        "id": "sms|dev_NU1Ofuw3Cw0XCt5x",
        "authenticator_type": "oob",
        "active": true,
        "oob_channel": "sms",
        "name": "XXXXXXXX8730"
    },
        {
        "id": "voice|dev_NU1Ofuw3Cw0XCt5x",
        "authenticator_type": "oob",
        "active": true,
        "oob_channel": "voice",
        "name": "XXXXXXXX8730"
    }
]

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