CHIEFSOFT\ameye
69 lines
1.4 KiB
PHP
69 lines
1.4 KiB
PHP
<?php
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namespace Packback\Lti1p3;
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/**
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* Used for migrations from LTI 1.1 to LTI 1.3
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*
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* @see IMigrationDatabase
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*/
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class Lti1p1Key
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{
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private ?string $key;
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private ?string $secret;
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public function __construct(?array $key = null)
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{
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$this->key = $key['key'] ?? null;
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$this->secret = $key['secret'] ?? null;
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}
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public function getKey(): ?string
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{
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return $this->key;
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}
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public function setKey(string $key): self
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{
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$this->key = $key;
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return $this;
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}
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public function getSecret(): ?string
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{
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return $this->secret;
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}
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public function setSecret(string $secret): self
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{
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$this->secret = $secret;
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return $this;
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}
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/**
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* Create a signature using the key and secret
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*
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* @see https://www.imsglobal.org/spec/lti/v1p3/migr#oauth_consumer_key_sign
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*/
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public function sign(string $deploymentId, string $iss, string $clientId, string $exp, string $nonce): string
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{
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$signatureComponents = [
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$this->getKey(),
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$deploymentId,
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$iss,
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$clientId,
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$exp,
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$nonce,
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];
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$baseString = implode('&', $signatureComponents);
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$utf8String = mb_convert_encoding($baseString, 'utf8', mb_detect_encoding($baseString));
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$hash = hash_hmac('sha256', $utf8String, $this->getSecret(), true);
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return base64_encode($hash);
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}
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}
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