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<?php |
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namespace rhertogh\Yii2SecurityTxt\helpers\GPG\traits; |
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use Crypt_GPG; |
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use Crypt_GPG_Exception; |
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use Crypt_GPG_KeyNotFoundException; |
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use Crypt_GPG_Signature; |
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use PEAR_Exception; |
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use Yii; |
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use yii\helpers\FileHelper; |
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trait CryptGPGTrait |
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{ |
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/** |
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* @throws Crypt_GPG_Exception |
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* @throws PEAR_Exception |
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*/ |
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protected static function signViaCryptGPG(string $message, string $privateKey): string |
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{ |
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Yii::beginProfile('Generate PGP signature', __METHOD__); |
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$gpg = static::getCryptGpg($gnupgHome); |
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try { |
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$keyInfo = $gpg->importKey($privateKey); |
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$gpg->addSignKey($keyInfo['fingerprint']); |
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$output = $gpg->sign($message, Crypt_GPG::SIGN_MODE_CLEAR); |
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} finally { |
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FileHelper::removeDirectory($gnupgHome); |
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} |
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Yii::endProfile('Generate PGP signature', __METHOD__); |
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return $output; |
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} |
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/** |
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* @throws Crypt_GPG_Exception |
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* @throws PEAR_Exception |
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*/ |
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protected static function verifyViaCryptGPG(string $message, string $publicKey): string|false |
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{ |
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Yii::beginProfile('Verify PGP signature', __METHOD__); |
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$gpg = static::getCryptGpg($gnupgHome); |
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try { |
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$keyInfo = $gpg->importKey($publicKey); |
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$gpg->addEncryptKey($keyInfo['fingerprint']); |
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/** @var array{ |
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* data: string, |
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* signatures: Crypt_GPG_Signature[], |
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* } $info |
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*/ |
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$info = $gpg->decryptAndVerify($message); |
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} catch (Crypt_GPG_KeyNotFoundException) { |
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return false; |
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} finally { |
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FileHelper::removeDirectory($gnupgHome); |
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} |
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if (!$info['signatures'][0]->isValid()) { |
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return false; |
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} |
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Yii::endProfile('Verify PGP signature', __METHOD__); |
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return $info['data']; |
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} |
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protected static function getCryptGpg(&$gnupgHome = null): Crypt_GPG |
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{ |
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if (empty($gnupgHome)) { |
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$gnupgHome = Yii::getAlias('@runtime') . '/gnupg/' . uniqid(more_entropy: true); |
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FileHelper::createDirectory($gnupgHome); |
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} |
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return new Crypt_GPG(['homedir' => $gnupgHome]); |
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} |
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} |
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rhertogh /
yii2-security.txt
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