Viewing file:  Ecdsa.php (1.8 KB) -rw-r--r--
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<?php
declare(strict_types=1);
namespace Lcobucci\JWT\Signer;
use Lcobucci\JWT\Signer\Ecdsa\MultibyteStringConverter;
use Lcobucci\JWT\Signer\Ecdsa\SignatureConverter;
use const OPENSSL_KEYTYPE_EC;
abstract class Ecdsa extends OpenSSL
{
public function __construct(
private readonly SignatureConverter $converter = new MultibyteStringConverter(),
) {
}
final public function sign(string $payload, Key $key): string
{
return $this->converter->fromAsn1(
$this->createSignature($key->contents(), $key->passphrase(), $payload),
$this->pointLength(),
);
}
final public function verify(string $expected, string $payload, Key $key): bool
{
return $this->verifySignature(
$this->converter->toAsn1($expected, $this->pointLength()),
$payload,
$key->contents(),
);
}
/** {@inheritDoc} */
final protected function guardAgainstIncompatibleKey(int $type, int $lengthInBits): void
{
if ($type !== OPENSSL_KEYTYPE_EC) {
throw InvalidKeyProvided::incompatibleKeyType(
self::KEY_TYPE_MAP[OPENSSL_KEYTYPE_EC],
self::KEY_TYPE_MAP[$type],
);
}
$expectedKeyLength = $this->expectedKeyLength();
if ($lengthInBits !== $expectedKeyLength) {
throw InvalidKeyProvided::incompatibleKeyLength($expectedKeyLength, $lengthInBits);
}
}
/**
* @internal
*
* @return positive-int
*/
abstract public function expectedKeyLength(): int;
/**
* Returns the length of each point in the signature, so that we can calculate and verify R and S points properly
*
* @internal
*
* @return positive-int
*/
abstract public function pointLength(): int;
}
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