public void Options_GlobalEnableSha256Signatures_DoesntBreakJwtSecurityTokenHandler() { // The JWT security token handler that is used by IdentityServer3 // uses the global CryptoConfig. This has been causing issues // when registering the Sha256 algorithm globally, where this // alters the result of the JWT signature handler lookup. Options.GlobalEnableSha256XmlSignatures(); var cert = SignedXmlHelper.TestCert; var token = new JwtSecurityToken( new JwtHeader(new X509SigningCredentials(SignedXmlHelper.TestCert2)), new JwtPayload(Enumerable.Empty <Claim>())); var handler = new JwtSecurityTokenHandler(); handler.Invoking(h => h.WriteToken(token)) .ShouldNotThrow(); }