99designs / http-signatures
Sign and verify HTTP messages
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Requires
- php: >=5.5
- paragonie/random_compat: ^1.0|^2.0
- psr/http-message: ^1.0
Requires (Dev)
- friendsofphp/php-cs-fixer: ^1.11
- guzzlehttp/psr7: ^1.2
- phpunit/phpunit: ~4.8
- symfony/http-foundation: ~2.8|~3.0
- symfony/psr-http-message-bridge: ^1.0
- zendframework/zend-diactoros: ^1.1
README
PHP implementation of HTTP Signatures draft specification; allowing cryptographic signing and verifying of PSR7 messages.
See also:
- https://github.com/99designs/http-signatures-guzzlehttp
- https://github.com/99designs/http-signatures-ruby
Usage
Add 99designs/http-signatures to your composer.json.
Configure a context with your algorithm, keys, headers to sign. This is best placed in an application startup file.
use HttpSignatures\Context; $context = new Context([ 'keys' => ['examplekey' => 'secret-key-here'], 'algorithm' => 'hmac-sha256', 'headers' => ['(request-target)', 'Date', 'Accept'], ]);
If there's only one key in the keys
hash, that will be used for signing.
Otherwise, specify one via 'signingKeyId' => 'examplekey'
.
Messages
A message is assumed to be a PSR-7 compatible request or response object.
Signing a message
$context->signer()->sign($message);
Now $message
contains the signature headers:
$message->headers->get('Signature'); // keyId="examplekey",algorithm="hmac-sha256",headers="...",signature="..." $message->headers->get('Authorization'); // Signature keyId="examplekey",algorithm="hmac-sha256",headers="...",signature="..."
Verifying a signed message
$context->verifier()->isValid($message); // true or false
Symfony compatibility
Symfony requests normalize query strings which means the resulting request target can be incorrect. See symfony/psr-http-message-bridge#30
When creating PSR-7 requests you use withRequestTarget
to ensure the request target is correct. For example
use Symfony\Bridge\PsrHttpMessage\Factory\DiactorosFactory; use Symfony\Component\HttpFoundation\Request; $symfonyRequest = Request::create('/foo?b=1&a=2'); $psrRequest = (new DiactorosFactory()) ->createRequest($symfonyRequest) ->withRequestTarget($symfonyRequest->getRequestUri());
Contributing
Pull Requests are welcome.
License
HTTP Signatures is licensed under The MIT License (MIT).