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System:

Linux 5.14.0-427.33.1.el9_4.x86_64

PHP Version:

7.4.33

User:

infinio

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/home/infinio/public_html/moodle/lib/lti1p3/src

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✏️ Editing: Lti1p1Key.php

<?php

namespace Packback\Lti1p3;

/**
 * Used for migrations from LTI 1.1 to LTI 1.3
 *
 * @see IMigrationDatabase
 */
class Lti1p1Key
{
    private ?string $key;
    private ?string $secret;

public function __construct(?array $key = null)
    {
        $this->key = $key['key'] ?? null;
        $this->secret = $key['secret'] ?? null;
    }

public function getKey(): ?string
    {
        return $this->key;
    }

public function setKey(string $key): self
    {
        $this->key = $key;

return $this;
    }

public function getSecret(): ?string
    {
        return $this->secret;
    }

public function setSecret(string $secret): self
    {
        $this->secret = $secret;

return $this;
    }

/**
     * Create a signature using the key and secret
     *
     * @see https://www.imsglobal.org/spec/lti/v1p3/migr#oauth_consumer_key_sign
     */
    public function sign(string $deploymentId, string $iss, string $clientId, string $exp, string $nonce): string
    {
        $signatureComponents = [
            $this->getKey(),
            $deploymentId,
            $iss,
            $clientId,
            $exp,
            $nonce,
        ];

$baseString = implode('&', $signatureComponents);
        $utf8String = mb_convert_encoding($baseString, 'utf8', mb_detect_encoding($baseString));
        $hash = hash_hmac('sha256', $utf8String, $this->getSecret(), true);

return base64_encode($hash);
    }

}

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