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2022-10-24 03:17:43 +00:00
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PHP-JWT
=======
A simple library to encode and decode JSON Web Tokens (JWT) in PHP, conforming to [RFC 7519](https://tools.ietf.org/html/rfc7519).
Installation
------------
Use composer to manage your dependencies and download PHP-JWT:
```bash
composer require firebase/php-jwt
```
Optionally, install the `paragonie/sodium_compat` package from composer if your
php is < 7.2 or does not have libsodium installed:
```bash
composer require paragonie/sodium_compat
```
Example
-------
```php
use Firebase\JWT\JWT;
use Firebase\JWT\Key;
$key = "example_key";
$payload = array(
"iss" => "http://example.org",
"aud" => "http://example.com",
"iat" => 1356999524,
"nbf" => 1357000000
);
/**
* IMPORTANT:
* You must specify supported algorithms for your application. See
* https://tools.ietf.org/html/draft-ietf-jose-json-web-algorithms-40
* for a list of spec-compliant algorithms.
*/
$jwt = JWT::encode($payload, $key, 'HS256');
$decoded = JWT::decode($jwt, new Key($key, 'HS256'));
print_r($decoded);
/*
NOTE: This will now be an object instead of an associative array. To get
an associative array, you will need to cast it as such:
*/
$decoded_array = (array) $decoded;
/**
* You can add a leeway to account for when there is a clock skew times between
* the signing and verifying servers. It is recommended that this leeway should
* not be bigger than a few minutes.
*
* Source: http://self-issued.info/docs/draft-ietf-oauth-json-web-token.html#nbfDef
*/
JWT::$leeway = 60; // $leeway in seconds
$decoded = JWT::decode($jwt, new Key($key, 'HS256'));
```
Example with RS256 (openssl)
----------------------------
```php
use Firebase\JWT\JWT;
use Firebase\JWT\Key;
$privateKey = <<<EOD
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
EOD;
$publicKey = <<<EOD
-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC8kGa1pSjbSYZVebtTRBLxBz5H
4i2p/llLCrEeQhta5kaQu/RnvuER4W8oDH3+3iuIYW4VQAzyqFpwuzjkDI+17t5t
0tyazyZ8JXw+KgXTxldMPEL95+qVhgXvwtihXC1c5oGbRlEDvDF6Sa53rcFVsYJ4
ehde/zUxo6UvS7UrBQIDAQAB
-----END PUBLIC KEY-----
EOD;
$payload = array(
"iss" => "example.org",
"aud" => "example.com",
"iat" => 1356999524,
"nbf" => 1357000000
);
$jwt = JWT::encode($payload, $privateKey, 'RS256');
echo "Encode:\n" . print_r($jwt, true) . "\n";
$decoded = JWT::decode($jwt, new Key($publicKey, 'RS256'));
/*
NOTE: This will now be an object instead of an associative array. To get
an associative array, you will need to cast it as such:
*/
$decoded_array = (array) $decoded;
echo "Decode:\n" . print_r($decoded_array, true) . "\n";
```
Example with a passphrase
-------------------------
```php
use Firebase\JWT\JWT;
use Firebase\JWT\Key;
// Your passphrase
$passphrase = '[YOUR_PASSPHRASE]';
// Your private key file with passphrase
// Can be generated with "ssh-keygen -t rsa -m pem"
$privateKeyFile = '/path/to/key-with-passphrase.pem';
// Create a private key of type "resource"
$privateKey = openssl_pkey_get_private(
file_get_contents($privateKeyFile),
$passphrase
);
$payload = array(
"iss" => "example.org",
"aud" => "example.com",
"iat" => 1356999524,
"nbf" => 1357000000
);
$jwt = JWT::encode($payload, $privateKey, 'RS256');
echo "Encode:\n" . print_r($jwt, true) . "\n";
// Get public key from the private key, or pull from from a file.
$publicKey = openssl_pkey_get_details($privateKey)['key'];
$decoded = JWT::decode($jwt, new Key($publicKey, 'RS256'));
echo "Decode:\n" . print_r((array) $decoded, true) . "\n";
```
Example with EdDSA (libsodium and Ed25519 signature)
----------------------------
```php
use Firebase\JWT\JWT;
use Firebase\JWT\Key;
// Public and private keys are expected to be Base64 encoded. The last
// non-empty line is used so that keys can be generated with
// sodium_crypto_sign_keypair(). The secret keys generated by other tools may
// need to be adjusted to match the input expected by libsodium.
$keyPair = sodium_crypto_sign_keypair();
$privateKey = base64_encode(sodium_crypto_sign_secretkey($keyPair));
$publicKey = base64_encode(sodium_crypto_sign_publickey($keyPair));
$payload = array(
"iss" => "example.org",
"aud" => "example.com",
"iat" => 1356999524,
"nbf" => 1357000000
);
$jwt = JWT::encode($payload, $privateKey, 'EdDSA');
echo "Encode:\n" . print_r($jwt, true) . "\n";
$decoded = JWT::decode($jwt, new Key($publicKey, 'EdDSA'));
echo "Decode:\n" . print_r((array) $decoded, true) . "\n";
````
Using JWKs
----------
```php
use Firebase\JWT\JWK;
use Firebase\JWT\JWT;
// Set of keys. The "keys" key is required. For example, the JSON response to
// this endpoint: https://www.gstatic.com/iap/verify/public_key-jwk
$jwks = ['keys' => []];
// JWK::parseKeySet($jwks) returns an associative array of **kid** to Firebase\JWT\Key
// objects. Pass this as the second parameter to JWT::decode.
JWT::decode($payload, JWK::parseKeySet($jwks));
```
Miscellaneous
-------------
#### Casting to array
The return value of `JWT::decode` is the generic PHP object `stdClass`. If you'd like to handle with arrays
instead, you can do the following:
```php
// return type is stdClass
$decoded = JWT::decode($payload, $keys);
// cast to array
$decoded = json_decode(json_encode($decoded), true);
```
Changelog
---------
#### 6.0.0 / 2022-01-24
- **Backwards-Compatibility Breaking Changes**: See the [Release Notes](https://github.com/firebase/php-jwt/releases/tag/v6.0.0) for more information.
- New Key object to prevent key/algorithm type confusion (#365)
- Add JWK support (#273)
- Add ES256 support (#256)
- Add ES384 support (#324)
- Add Ed25519 support (#343)
#### 5.0.0 / 2017-06-26
- Support RS384 and RS512.
See [#117](https://github.com/firebase/php-jwt/pull/117). Thanks [@joostfaassen](https://github.com/joostfaassen)!
- Add an example for RS256 openssl.
See [#125](https://github.com/firebase/php-jwt/pull/125). Thanks [@akeeman](https://github.com/akeeman)!
- Detect invalid Base64 encoding in signature.
See [#162](https://github.com/firebase/php-jwt/pull/162). Thanks [@psignoret](https://github.com/psignoret)!
- Update `JWT::verify` to handle OpenSSL errors.
See [#159](https://github.com/firebase/php-jwt/pull/159). Thanks [@bshaffer](https://github.com/bshaffer)!
- Add `array` type hinting to `decode` method
See [#101](https://github.com/firebase/php-jwt/pull/101). Thanks [@hywak](https://github.com/hywak)!
- Add all JSON error types.
See [#110](https://github.com/firebase/php-jwt/pull/110). Thanks [@gbalduzzi](https://github.com/gbalduzzi)!
- Bugfix 'kid' not in given key list.
See [#129](https://github.com/firebase/php-jwt/pull/129). Thanks [@stampycode](https://github.com/stampycode)!
- Miscellaneous cleanup, documentation and test fixes.
See [#107](https://github.com/firebase/php-jwt/pull/107), [#115](https://github.com/firebase/php-jwt/pull/115),
[#160](https://github.com/firebase/php-jwt/pull/160), [#161](https://github.com/firebase/php-jwt/pull/161), and
[#165](https://github.com/firebase/php-jwt/pull/165). Thanks [@akeeman](https://github.com/akeeman),
[@chinedufn](https://github.com/chinedufn), and [@bshaffer](https://github.com/bshaffer)!
#### 4.0.0 / 2016-07-17
- Add support for late static binding. See [#88](https://github.com/firebase/php-jwt/pull/88) for details. Thanks to [@chappy84](https://github.com/chappy84)!
- Use static `$timestamp` instead of `time()` to improve unit testing. See [#93](https://github.com/firebase/php-jwt/pull/93) for details. Thanks to [@josephmcdermott](https://github.com/josephmcdermott)!
- Fixes to exceptions classes. See [#81](https://github.com/firebase/php-jwt/pull/81) for details. Thanks to [@Maks3w](https://github.com/Maks3w)!
- Fixes to PHPDoc. See [#76](https://github.com/firebase/php-jwt/pull/76) for details. Thanks to [@akeeman](https://github.com/akeeman)!
#### 3.0.0 / 2015-07-22
- Minimum PHP version updated from `5.2.0` to `5.3.0`.
- Add `\Firebase\JWT` namespace. See
[#59](https://github.com/firebase/php-jwt/pull/59) for details. Thanks to
[@Dashron](https://github.com/Dashron)!
- Require a non-empty key to decode and verify a JWT. See
[#60](https://github.com/firebase/php-jwt/pull/60) for details. Thanks to
[@sjones608](https://github.com/sjones608)!
- Cleaner documentation blocks in the code. See
[#62](https://github.com/firebase/php-jwt/pull/62) for details. Thanks to
[@johanderuijter](https://github.com/johanderuijter)!
#### 2.2.0 / 2015-06-22
- Add support for adding custom, optional JWT headers to `JWT::encode()`. See
[#53](https://github.com/firebase/php-jwt/pull/53/files) for details. Thanks to
[@mcocaro](https://github.com/mcocaro)!
#### 2.1.0 / 2015-05-20
- Add support for adding a leeway to `JWT:decode()` that accounts for clock skew
between signing and verifying entities. Thanks to [@lcabral](https://github.com/lcabral)!
- Add support for passing an object implementing the `ArrayAccess` interface for
`$keys` argument in `JWT::decode()`. Thanks to [@aztech-dev](https://github.com/aztech-dev)!
#### 2.0.0 / 2015-04-01
- **Note**: It is strongly recommended that you update to > v2.0.0 to address
known security vulnerabilities in prior versions when both symmetric and
asymmetric keys are used together.
- Update signature for `JWT::decode(...)` to require an array of supported
algorithms to use when verifying token signatures.
Tests
-----
Run the tests using phpunit:
```bash
$ pear install PHPUnit
$ phpunit --configuration phpunit.xml.dist
PHPUnit 3.7.10 by Sebastian Bergmann.
.....
Time: 0 seconds, Memory: 2.50Mb
OK (5 tests, 5 assertions)
```
New Lines in private keys
-----
If your private key contains `\n` characters, be sure to wrap it in double quotes `""`
and not single quotes `''` in order to properly interpret the escaped characters.
License
-------
[3-Clause BSD](http://opensource.org/licenses/BSD-3-Clause).