Class yii\authclient\signature\RsaSha

 public function generateSignature($baseString, $key) { $privateCertificateContent = $this->getPrivateCertificate(); // Pull the private key ID from the certificate $privateKeyId = openssl_pkey_get_private($privateCertificateContent, $key); // Sign using the key openssl_sign($baseString, $signature, $privateKeyId, $this->algorithm); if (\PHP_VERSION_ID < 80000) { // Release the key resource. Done automatically in PHP 8 openssl_free_key($privateKeyId); } return base64_encode($signature); }  

 public function getName() { if (is_int($this->algorithm)) { $constants = get_defined_constants(true); if (isset($constants['openssl'])) { foreach ($constants['openssl'] as $name => $value) { if (strpos($name, 'OPENSSL_ALGO_') !== 0) { continue; } if ($value === $this->algorithm) { $algorithmName = substr($name, strlen('OPENSSL_ALGO_')); break; } } } if (!isset($algorithmName)) { throw new InvalidConfigException("Unable to determine name of algorithm '{$this->algorithm}'"); } } else { $algorithmName = strtoupper($this->algorithm); } return 'RSA-' . $algorithmName; }  

 public function getPrivateCertificate() { if ($this->_privateCertificate === null) { $this->_privateCertificate = $this->initPrivateCertificate(); } return $this->_privateCertificate; }  

 public function getPublicCertificate() { if ($this->_publicCertificate === null) { $this->_publicCertificate = $this->initPublicCertificate(); } return $this->_publicCertificate; }  

 public function init() { if (!function_exists('openssl_sign')) { throw new NotSupportedException('PHP "OpenSSL" extension is required.'); } }  

 protected function initPrivateCertificate() { if (!empty($this->privateCertificateFile)) { if (!file_exists($this->privateCertificateFile)) { throw new InvalidConfigException("Private certificate file '{$this->privateCertificateFile}' does not exist!"); } return file_get_contents($this->privateCertificateFile); } return ''; }  

 protected function initPublicCertificate() { if (!empty($this->publicCertificateFile)) { if (!file_exists($this->publicCertificateFile)) { throw new InvalidConfigException("Public certificate file '{$this->publicCertificateFile}' does not exist!"); } return file_get_contents($this->publicCertificateFile); } return ''; }  

 public function setPrivateCertificate($privateCertificate) { $this->_privateCertificate = $privateCertificate; }  

 public function setPublicCertificate($publicCertificate) { $this->_publicCertificate = $publicCertificate; }  

 public function verify($signature, $baseString, $key) { $decodedSignature = base64_decode($signature); // Fetch the public key cert based on the request $publicCertificate = $this->getPublicCertificate(); // Pull the public key ID from the certificate $publicKeyId = openssl_pkey_get_public($publicCertificate); // Check the computed signature against the one passed in the query $verificationResult = openssl_verify($baseString, $decodedSignature, $publicKeyId, $this->algorithm); if (\PHP_VERSION_ID < 80000) { // Release the key resource. Done automatically in PHP 8 openssl_free_key($publicKeyId); } return ($verificationResult == 1); }