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<?php declare(strict_types=1); namespace Lcobucci\JWT\Signer\Ecdsa; /** * Manipulates the result of a ECDSA signature (points R and S) according to the * JWA specs. * * OpenSSL creates a signature using the ASN.1 format and, according the JWA specs, * the signature for JWTs must be the concatenated values of points R and S (in * big-endian octet order). * * @internal * * @see https://tools.ietf.org/html/rfc7518#page-9 * @see https://en.wikipedia.org/wiki/Abstract_Syntax_Notation_One */ interface SignatureConverter { /** * Converts the signature generated by OpenSSL into what JWA defines * * @return non-empty-string * * @throws ConversionFailed When there was an issue during the format conversion. */ public function fromAsn1(string $signature, int $length): string; /** * Converts the JWA signature into something OpenSSL understands * * @param non-empty-string $points * * @return non-empty-string * * @throws ConversionFailed When there was an issue during the format conversion. */ public function toAsn1(string $points, int $length): string; }
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