googleanalytics
/
lib
/
analytics-admin
/
vendor
/
google
/
auth
/
src
/
ServiceAccountSignerTrait.php
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ServiceAccountSignerTrait.php
58 lines
| 1 | <?php |
| 2 | /* |
| 3 | * Copyright 2019 Google LLC |
| 4 | * |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | * you may not use this file except in compliance with the License. |
| 7 | * You may obtain a copy of the License at |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | * See the License for the specific language governing permissions and |
| 15 | * limitations under the License. |
| 16 | */ |
| 17 | |
| 18 | namespace Google\Auth; |
| 19 | |
| 20 | use phpseclib\Crypt\RSA; |
| 21 | |
| 22 | /** |
| 23 | * Sign a string using a Service Account private key. |
| 24 | */ |
| 25 | trait ServiceAccountSignerTrait |
| 26 | { |
| 27 | /** |
| 28 | * Sign a string using the service account private key. |
| 29 | * |
| 30 | * @param string $stringToSign |
| 31 | * @param bool $forceOpenssl Whether to use OpenSSL regardless of |
| 32 | * whether phpseclib is installed. **Defaults to** `false`. |
| 33 | * @return string |
| 34 | */ |
| 35 | public function signBlob($stringToSign, $forceOpenssl = false) |
| 36 | { |
| 37 | $privateKey = $this->auth->getSigningKey(); |
| 38 | |
| 39 | $signedString = ''; |
| 40 | if (class_exists('\\phpseclib\\Crypt\\RSA') && !$forceOpenssl) { |
| 41 | $rsa = new RSA(); |
| 42 | $rsa->loadKey($privateKey); |
| 43 | $rsa->setSignatureMode(RSA::SIGNATURE_PKCS1); |
| 44 | $rsa->setHash('sha256'); |
| 45 | |
| 46 | $signedString = $rsa->sign($stringToSign); |
| 47 | } elseif (extension_loaded('openssl')) { |
| 48 | openssl_sign($stringToSign, $signedString, $privateKey, 'sha256WithRSAEncryption'); |
| 49 | } else { |
| 50 | // @codeCoverageIgnoreStart |
| 51 | throw new \RuntimeException('OpenSSL is not installed.'); |
| 52 | } |
| 53 | // @codeCoverageIgnoreEnd |
| 54 | |
| 55 | return base64_encode($signedString); |
| 56 | } |
| 57 | } |
| 58 |