Initial Code

.gitattributes

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+.gitattributes export-ignore
+.gitignore export-ignore
+.gitreview export-ignore
+.travis.yml export-ignore
+phpunit.xml export-ignore
+tests/ export-ignore

.gitignore

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+composer.lock
+vendor/
+build/
+.phpunit.result.cache
+.phpunit.cache

LICENSE

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+MIT License
+
+Copyright (c) 2022 Eko Junaidi Salam
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# ejsotp
+TOTP dan HOTP Library with backup codes, compatible with google authenticator

composer.json

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+{
+    "name": "ekojs/otp",
+    "description": "TOTP dan HOTP Library with backup codes, compatible with google authenticator",
+    "type": "library",
+    "license": "MIT",
+    "autoload": {
+        "psr-4": {
+            "Ekojs\\Otp\\": "src/"
+        }
+    },
+    "authors": [
+        {
+            "name": "Eko Junaidi Salam",
+            "email": "[email protected]"
+        }
+    ],
+    "minimum-stability": "stable",
+    "require": {
+        "spomky-labs/otphp": "^10.0",
+        "endroid/qr-code": "^4.4",
+        "furqansiddiqui/bip39-mnemonic-php": "^0.1.4"
+    }
+}

src/HOTP.php

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+<?php declare(strict_types=1);
+
+/**
+ * TOTP dan HOTP Library with backup codes, compatible with google authenticator
+ * 
+ * @author Eko Junaidi Salam <[email protected]>
+ */
+
+namespace Ekojs\Otp;
+
+use OTPHP\HOTP as LabHOTP;
+use \FurqanSiddiqui\BIP39\BIP39;
+use \FurqanSiddiqui\BIP39\Wordlist;
+use Endroid\QrCode\QrCode;
+use Endroid\QrCode\Writer\PngWriter;
+use Endroid\QrCode\Logo\Logo;
+use Endroid\QrCode\Label\Label;
+use Endroid\QrCode\Color\Color;
+
+class HOTP {
+    public static $instance;
+    public $otp;
+    protected $writer;
+    protected $bip39;
+    public $parameters = [];
+
+    public function __construct(?array $params=null) {
+        $this->parameters = $params;
+        $this->otp = LabHOTP::create($params["secret"] ?? null, $params["counter"] ?? 0, $params["digest"] ?? 'sha1', $params["digits"] ?? 6);
+        $this->writer = new PngWriter();
+        $this->bip39 = new BIP39();
+        self::$instance = $this;
+    }
+
+    public static function getInstance(?array $params=null) {
+        if (self::$instance === null) {
+            self::$instance = new self($params);
+        }
+        return self::$instance;
+    }
+
+    public function getParams(): array {
+        return $this->parameters;
+    }
+
+    public function generateQr(?string $logo=null, bool $setLabel=false, int $size=200) {
+        $label = null;
+        $qrCode = QrCode::create($this->otp->getProvisioningUri());
+        $qrCode->setSize($size);
+
+        if(!empty($logo)) $logo = Logo::create($logo)->setResizeToWidth(50);
+        if(!empty($this->otp->getLabel()) && $setLabel) $label = Label::create($this->otp->getLabel())->setTextColor(new Color(0, 0, 255));
+
+        return $this->writer->write($qrCode, $logo, $label);
+    }
+
+    public function generateBackupCodes(string $entropy, ?WordList $wordList=null) {
+        $wordList = $wordList ?? WordList::English();
+        return $this->bip39->wordlist($wordList)->useEntropy(hash("md5",$entropy))->mnemonic();
+    }
+
+    public function reverseMnemonic($words) {
+        return $this->bip39::Words($words);
+    }
+}
+

src/TOTP.php

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+<?php declare(strict_types=1);
+
+/**
+ * TOTP dan HOTP Library with backup codes, compatible with google authenticator
+ * 
+ * @author Eko Junaidi Salam <[email protected]>
+ */
+
+namespace Ekojs\Otp;
+
+use OTPHP\TOTP as LabTOTP;
+use \FurqanSiddiqui\BIP39\BIP39;
+use \FurqanSiddiqui\BIP39\Wordlist;
+use Endroid\QrCode\QrCode;
+use Endroid\QrCode\Writer\PngWriter;
+use Endroid\QrCode\Logo\Logo;
+use Endroid\QrCode\Label\Label;
+use Endroid\QrCode\Color\Color;
+
+class TOTP {
+    public static $instance;
+    private $mode;
+    public $otp;
+    protected $writer;
+    protected $bip39;
+    public $parameters = [];
+
+    public function __construct(?array $params=null) {
+        $this->parameters = $params;
+        $this->otp = LabTOTP::create($params["secret"] ?? null, $params["period"] ?? 30, $params["digest"] ?? 'sha1', $params["digits"] ?? 6, $params["epoch"] ?? 0);
+        $this->writer = new PngWriter();
+        $this->bip39 = new BIP39();
+        self::$instance = $this;
+    }
+
+    public static function getInstance(?array $params=null) {
+        if (self::$instance === null) {
+            self::$instance = new self($params);
+        }
+        return self::$instance;
+    }
+
+    public function getParams(): array {
+        return $this->parameters;
+    }
+
+    public function generateQr(?string $logo=null, bool $setLabel=false, int $size=200) {
+        $label = null;
+        $qrCode = QrCode::create($this->otp->getProvisioningUri());
+        $qrCode->setSize($size);
+
+        if(!empty($logo)) $logo = Logo::create($logo)->setResizeToWidth(50);
+        if(!empty($this->otp->getLabel()) && $setLabel) $label = Label::create($this->otp->getLabel())->setTextColor(new Color(0, 0, 255));
+
+        return $this->writer->write($qrCode, $logo, $label);
+    }
+
+    public function generateBackupCodes(string $entropy, ?WordList $wordList=null) {
+        $wordList = $wordList ?? WordList::English();
+        return $this->bip39->wordlist($wordList)->useEntropy(hash("md5",$entropy))->mnemonic();
+    }
+
+    public function reverseMnemonic($words) {
+        return $this->bip39::Words($words);
+    }
+}
+