![]() ![]() ![]() Pass this as the second parameter to JWT::decode. JWK::parseKeySet($jwks) returns an associative array of **kid** to Firebase\JWT\Key // objects. For example, the JSON response to // this endpoint: $jwks = ] $jwt2 = JWT:: encode( $payload, $privateKey2, 'EdDSA', 'kid2') Įcho " Encode 1:\n". Example RSA keys from previous example // $privateKey1 = '.' // $publicKey1 = '.' // Example EdDSA keys from previous example // $privateKey2 = '.' // $publicKey2 = '.' $payload = [ "\n" Example with multiple keys use Firebase\ JWT\ JWT $decoded = JWT:: decode( $jwt, new Key( $publicKey, 'EdDSA')) Įcho " Decode:\n". $jwt = JWT:: encode( $payload, $privateKey, 'EdDSA') $publicKey = base64_encode(sodium_crypto_sign_publickey( $keyPair)) $privateKey = base64_encode(sodium_crypto_sign_secretkey( $keyPair)) The secret keys generated by other tools may // need to be adjusted to match the input expected by libsodium. The last // non-empty line is used so that keys can be generated with // sodium_crypto_sign_keypair(). Public and private keys are expected to be Base64 encoded. "\n" Example with EdDSA (libsodium and Ed25519 signature) use Firebase\ JWT\ JWT $publicKey = openssl_pkey_get_details( $privateKey) Įcho " Decode:\n". Get public key from the private key, or pull from from a file. Create a private key of type "resource" $privateKey = openssl_pkey_get_private( Your private key file with passphrase // Can be generated with "ssh-keygen -t rsa -m pem" $privateKeyFile = '/path/to/key-with-passphrase.pem' "\n" Example with a passphrase use Firebase\ JWT\ JWT ![]() $decoded = JWT:: decode( $jwt, new Key( $publicKey, 'RS256')) Įcho " Decode:\n". $jwt = JWT:: encode( $payload, $privateKey, 'RS256') Įcho " Encode:\n". Print_r( $decoded) Example with RS256 (openssl) use Firebase\ JWT\ JWT $decoded = json_decode(base64_decode( $headersB64), true) list( $headersB64, $payloadB64, $sig) = explode( '.', $jwt) These headers could be any value sent by an attacker. Decode headers from the JWT string WITHOUT validation // **IMPORTANT**: This operation is vulnerable to attacks, as the JWT has not yet been verified. Encode headers in the JWT string $jwt = JWT:: encode( $payload, $key, 'HS256', null, $headers) If this is something you still want to do in your application for whatever reason, it's possible toĭecode the header values manually simply by calling json_decode and base64_decode on the JWT This is because without verifying the JWT, the header values could have been tampered with.Īny value pulled from an unverified header should be treated as if it could be any string sent in from anĪttacker. * * Source: */ JWT:: $leeway = 60 // $leeway in seconds $decoded = JWT:: decode( $jwt, new Key( $key, 'HS256')) Example encode/decode headersĭecoding the JWT headers without verifying the JWT first is NOT recommended, and is not supported by It is recommended that this leeway should * not be bigger than a few minutes. ![]() ** * You can add a leeway to account for when there is a clock skew times between * the signing and verifying servers. To get an associative array, you will need to cast it as such: */ $decoded_array = ( array) $decoded * NOTE: This will now be an object instead of an associative array. Pass a stdClass in as the third parameter to get the decoded header values $decoded = JWT:: decode( $jwt, new Key( $key, 'HS256'), $headers = new stdClass()) $decoded = JWT:: decode( $jwt, new Key( $key, 'HS256')) See * * for a list of spec-compliant algorithms. ** * IMPORTANT: * You must specify supported algorithms for your application. Optionally, install the paragonie/sodium_compat package from composer if your Use composer to manage your dependencies and download PHP-JWT: composer require firebase/php-jwt A simple library to encode and decode JSON Web Tokens (JWT) in PHP, conforming to RFC 7519. ![]()
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