Eclipse MicroProfile Interoperable JWT RBAC

{
     "typ": "JWT",
    "alg": "RS256",
    "kid": "abc-1234567890"
}
{
       "iss": "https://server.example.com",
       "jti": "a-123",
       "exp": 1311281970,
       "iat": 1311280970,
       "sub": "24400320",
       "upn": "jdoe@server.example.com",
       "groups": ["red-group", "green-group", "admin-group", "admin"],
}

package org.eclipse.microprofile.jwt;
public interface JsonWebToken extends Principal {

    /**
     * Returns the unique name of this principal. This either comes from the upn
     * claim, or if that is missing, the preferred_username claim. Note that for
     * guaranteed interoperability a upn claim should be used.
     *
     * @return the unique name of this principal.
     */
    @Override
    String getName();

    /**
     * Get the raw bearer token string originally passed in the authentication
     * header
     * @return raw bear token string
     */
    default String getRawToken() {
        return getClaim(Claims.raw_token.name());
    }

    /**
     * The iss(Issuer) claim identifies the principal that issued the JWT
     * @return the iss claim.
     */
    default String getIssuer() {
        return getClaim(Claims.iss.name());
    }

    /**
     * The aud(Audience) claim identifies the recipients that the JWT is
     * intended for.
     * @return the aud claim.
     */
    default Set<String> getAudience() {
        return getClaim(Claims.aud.name());
    }

    /**
     * The sub(Subject) claim identifies the principal that is the subject of
     * the JWT. This is the token issuing
     * IDP subject, not the
     *
     * @return the sub claim.
     */
    default String getSubject() {
        return getClaim(Claims.sub.name());
    }

    /**
     * The jti(JWT ID) claim provides a unique identifier for the JWT.
     The identifier value MUST be assigned in a manner that ensures that
     there is a negligible probability that the same value will be
     accidentally assigned to a different data object; if the application
     uses multiple issuers, collisions MUST be prevented among values
     produced by different issuers as well.  The "jti" claim can be used
     to prevent the JWT from being replayed.
     * @return the jti claim.
     */
    default String getTokenID() {
        return getClaim(Claims.jti.name());
    }

    /**
     * The exp (Expiration time) claim identifies the expiration time on or
     * after which the JWT MUST NOT be accepted
     * for processing in seconds since 1970-01-01T00:00:00Z UTC
     * @return the exp claim.
     */
    default long getExpirationTime() {
        return getClaim(Claims.exp.name());
    }

    /**
     * The iat(Issued at time) claim identifies the time at which the JWT was
     * issued in seconds since 1970-01-01T00:00:00Z UTC
     * @return the iat claim
     */
    default long getIssuedAtTime() {
        return getClaim(Claims.iat.name());
    }

    /**
     * The groups claim provides the group names the JWT principal has been
     * granted.
     *
     * This is a MicroProfile specific claim.
     * @return a possibly empty set of group names.
     */
    default Set<String> getGroups() {
        return getClaim(Claims.groups.name());
    }

    /**
     * Access the names of all claims are associated with this token.
     * @return non-standard claim names in the token
     */
    Set<String> getClaimNames();

    /**
     * Verify is a given claim exists
     * @param claimName - the name of the claim
     * @return true if the JsonWebToken contains the claim, false otherwise
     */
    default boolean containsClaim(String claimName) {
        return claim(claimName).isPresent();
    }

    /**
     * Access the value of the indicated claim.
     * @param claimName - the name of the claim
     * @return the value of the indicated claim if it exists, null otherwise.
     */
    <T> T getClaim(String claimName);

    /**
     * A utility method to access a claim value in an {@linkplain Optional}
     * wrapper
     * @param claimName - the name of the claim
     * @param <T> - the type of the claim value to return
     * @return an Optional wrapper of the claim value
     */
    default <T> Optional<T> claim(String claimName) {
        return Optional.ofNullable(getClaim(claimName));
    }
}

{
     "typ": "JWT",
    "alg": "RS256",
    "kid": "abc-1234567890"
}
{
   "iss": "https://server.example.com",
   "aud": ["s6BhdRkqt3"],
   "exp": 1311281970,
   "iat": 1311280970,
   "sub": "24400320",
   "upn": "jdoe@server.example.com",
   "groups: ["red-group", "green-group", "admin-group"],
   "roles": ["auditor", "administrator"],
   "jti": "a-123",
   "auth_time": 1311280969,
   "preferred_username": "jdoe",
   "acr": "phr",
   "nbf":  1311288970
}

public enum Claims {
    // The base set of required claims that MUST have non-null values in the JsonWebToken
    iss("Issuer", String.class),
    sub("Subject", String.class),
    exp("Expiration Time", Long.class),
    iat("Issued At Time", Long.class),
    jti("JWT ID", String.class),
    upn("MP-JWT specific unique principal name", String.class),
    groups("MP-JWT specific groups permission grant", Set.class),
    raw_token("MP-JWT specific original bearer token", String.class),

    // The IANA registered, but MP-JWT optional claims
    aud("Audience", Set.class),
    nbf("Not Before", Long.class),
    auth_time("Time when the authentication occurred", Long.class),
    updated_at("Time the information was last updated", Long.class),
    azp("Authorized party - the party to which the ID Token was issued", String.class),
    nonce("Value used to associate a Client session with an ID Token", String.class),
    at_hash("Access Token hash value", Long.class),
    c_hash("Code hash value", Long.class),

    full_name("Full name", String.class),
    family_name("Surname(s) or last name(s)", String.class),
    middle_name("Middle name(s)", String.class),
    nickname("Casual name", String.class),
    given_name("Given name(s) or first name(s)", String.class),
    preferred_username("Shorthand name by which the End-User wishes to be referred to", String.class),
    email("Preferred e-mail address", String.class),
    email_verified("True if the e-mail address has been verified; otherwise false", Boolean.class),

    gender("Gender", String.class),
    birthdate("Birthday", String.class),
    zoneinfo("Time zone", String.class),
    locale("Locale", String.class),
    phone_number("Preferred telephone number", String.class),
    phone_number_verified("True if the phone number has been verified; otherwise false", Boolean.class),
    address("Preferred postal address", JsonObject.class),
    acr("Authentication Context Class Reference", String.class),
    amr("Authentication Methods References", String.class),
    sub_jwk("Public key used to check the signature of an ID Token", JsonObject.class),
    cnf("Confirmation", String.class),
    sip_from_tag("SIP From tag header field parameter value", String.class),
    sip_date("SIP Date header field value", String.class),
    sip_callid("SIP Call-Id header field value", String.class),
    sip_cseq_num("SIP CSeq numeric header field parameter value", String.class),
    sip_via_branch("SIP Via branch header field parameter value", String.class),
    orig("Originating Identity String", String.class),
    dest("Destination Identity String", String.class),
    mky("Media Key Fingerprint String", String.class),

    jwk("JSON Web Key Representing Public Key", JsonObject.class),
    jwe("Encrypted JSON Web Key", String.class),
    kid("Key identifier", String.class),
    jku("JWK Set URL", String.class),

    UNKNOWN("A catch all for any unknown claim", Object.class)
    ;
...
    /**
     * @return A desccription for the claim
     */
    public String getDescription() {
        return description;
    }

    /**
     * The required type of the claim
     * @return type of the claim
     */
    public Class<?> getType() {
        return type;
    }
}