Obtain token in JWT format from a custom Sts - wif

Question

I have implemented a custom STS and it works good with Saml token.
Now I need to obtain the token in JWT format, because I need to pass it later to WCF Rest based service.
I've installed the Jwt Token Handler from:
https://nuget.org/packages/System.IdentityModel.Tokens.Jwt/
This is a part of the Web.config in the Sts project:
<securityTokenHandlers name="ActAs">
<clear/>
<add type="System.IdentityModel.Tokens.JwtSecurityTokenHandler, System.IdentityModel.Tokens.Jwt"/>
<!--<add type="System.IdentityModel.Tokens.SamlSecurityTokenHandler, System.IdentityModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
<add type="System.IdentityModel.Tokens.Saml2SecurityTokenHandler, System.IdentityModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />-->
<securityTokenHandlerConfiguration>
<audienceUris>
<add value="URL_RP_STS"/>
<add value="URL_CLIENT"/>
</audienceUris>
<issuerNameRegistry type="System.IdentityModel.Tokens.ConfigurationBasedIssuerNameRegistry, System.IdentityModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089">
<trustedIssuers>
<add thumbprint="..." name="StsCustom" />
</trustedIssuers>
</issuerNameRegistry>
</securityTokenHandlerConfiguration>
</securityTokenHandlers>
<audienceUris>
<add value="URL_RP_STS" />
</audienceUris>
<!--certificationValidationMode set to "None" by the the Identity and Access Tool for Visual Studio. For development purposes.-->
<certificateValidation certificateValidationMode="None" />
<issuerNameRegistry type="System.IdentityModel.Tokens.ValidatingIssuerNameRegistry, System.IdentityModel.Tokens.ValidatingIssuerNameRegistry">
<authority name="StsCustom">
<keys>
<add thumbprint="..." />
</keys>
<validIssuers>
<add name="StsCustom" />
</validIssuers>
</authority>
</issuerNameRegistry>
</identityConfiguration>
But the Sts continue to generate a SamlSecurityToken.
Is necessary some other configuration to set a specific token type? Is not suffice adding the Jwt token handler in the securityTokenHandlers section?
Thanks

Answer 1

How do you request the token? In WS-Trust you can pass in the token type in the RST. For WS-Federation you need to write code in the STS for that.