<h1 id="auth-tokens">Auth Tokens<a aria-hidden="true" class="anchor-heading icon-link" href="#auth-tokens"></a></h1>
<h3 id="opaque-token-vs-structured-token">Opaque token vs Structured token<a aria-hidden="true" class="anchor-heading icon-link" href="#opaque-token-vs-structured-token"></a></h3>
<p>an unencrypted structured token (like a <a href="/notes/6s5Oh0DUcMsShcFrmDaBK">JWT</a>) can be interpreted by anybody that holds the token, whereas opaque tokens cannot.</p>
<p>The opaque token is a random unique string of characters issued by the authorization server.</p>
<ul>
<li>it is issued in a format that is known only to the auth server (unlike JWTs, which use a highly predictable format)</li>
<li>it contains an identifier to information stored on the authorization server.
<ul>
<li>therefore, if the resource server wants to get identity information from the token, it needs to send a request to the introspection endpoint of the auth server.</li>
<li>on the other hand, a structured token (like a JWT) contains enough information for the resource server to make its authorization decision.</li>
</ul>
</li>
<li>To validate the token and retrieve the information on the token and the user, the resource server calls the authorization server and requests the token introspection.</li>
</ul>
<p>Opaque tokens should be the default choice <em>unless</em> we want our client to be able to parse the token (which turns out is a common requirement with webapps)</p>
<ul>
<li>ex. a service framework in which you only pass the token to the service as a blind claim; you have no idea what it says, but you know it works and identifies you. It is only up to the service to confirm it's you via the secret key or cipher.</li>
</ul>
<hr>
<strong>Children</strong>
<ol>
<li><a href="/notes/RXSECsORRrl4fC8oCEtsk">Access Token</a></li>
<li><a href="/notes/6s5Oh0DUcMsShcFrmDaBK">JWT</a></li>
<li><a href="/notes/Pp08kttb1g4TIC3R5Lt06">Refresh Token</a></li>
</ol>
<hr>
<strong>Backlinks</strong>
<ul>
<li><a href="/notes/0NyqVKRyLLG6J1NDvFX5k">Session</a></li>
<li><a href="/notes/yBNgydTx5k1BfiGgW3BbD">Federated Identity</a></li>
</ul>

Auth Tokens

tech

This Dendron vault of tech knowledge is organized according to domains and their sub-domains, along with specific implementation of those domains.

For instance, Git itself is a domain. Sub-domains of Git would include topics like `commit`,
`tags`, `reflog` etc., while implementations of each of those could be `cli`, `strat`
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The goal of the wiki is to present data in a manner that is from the perspective
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and hasn't done them in a while, they should be able to query
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that have been employed in the past.

This wiki has been written with myself in mind. While learning each of these
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As a result, I have allowed myself to use potentially arcane concepts to help
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I have made reference to the [[microservices|general.arch.microservice]] note.
The ability to analogize between different concepts captured in different notes
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you'd have to understand microservices to be able to draw that same parallel
that I've already drawn, these links won't work for everyone. Since these notes
are written for myself, I have been fine with taking these liberties and leaning
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What I hope to gain from this wiki is the ability to step away from any
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To achieve this, the system should be steadfast to:
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This Dendron notebook is the sister vault to the general [Second Brain](https://tech.kyletycholiz.com).

## Tags
Throughout the garden, I have made use of tags, which give semantic meaning to the pieces of information.

- `ex.` - Denotes an *example* of the preceding piece of information
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## Resources
### UE (Unexamined) Resources
Often, I come across sources of information that I believe to be high-quality. They may be recommendations or found in some other way. No matter their origin, I may be in a position where I don't have the time to fully examine them (and properly extract notes), or I may not require the information at that moment in time. In cases like these, I will add reference to a section of the note called **UE Resources**. The idea is that in the future when I am ready to examine them, I have a list of resources that I can start with. This is an alternative strategy to compiling browser bookmarks, which I've found can quickly become untenable.

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### Resources
This heading is for inexhaustible resources. 
- A prime example would be a quality website that continually posts articles.  - Another example would be a tool, such as software that measures frequencies in a room to help acoustically treat it.
