Token-based authentication is implemented by generating a token when the user authenticates and then setting that token in the Authorization header of each subsequent request to your API. Traditional, server-side web applications have traditionally used cookie-based authentication. Typically, single-page apps (such as React, Vue, and AngularJS + Node), native mobile apps (such as iOS and Android), and web APIs (written in Node, Ruby, ASP.NET, or a mix of those) benefit most from token-based authentication.
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For an example of server-side storage and token reuse, see Token Storage. How you store tokens will depend on the characteristics of your application: typical solutions include databases (for apps that need to perform API calls regardless of the presence of a session) and HTTP sessions (for apps that have an activity window limited to an interactive session). Rather than requesting a new token, use the stored token during future calls until it expires. Store and reuse: Reduce unnecessary roundtrips that extend your application's attack surface, and optimize plan token limits (where applicable) by storing access tokens obtained from the authorization server.
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This could pose potential issues so have a strategy for expiring and/or revoking tokens.Įmbrace HTTPS: Do not send tokens over non-HTTPS connections as those requests can be intercepted and tokens compromised.Ĭonsider all of your authorization use cases: Adding a secondary token verification system that ensures tokens were generated from your server may be necessary to meet your requirements. Give tokens an expiration: Technically, once a token is signed, it is valid forever-unless the signing key is changed or expiration explicitly set. Add the bare minimum number of claims to the payload for best performance and security.
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Keep it safe: The signing key should be treated like any other credential and revealed only to services that need it.ĭo not add sensitive data to the payload: Tokens are signed to protect against manipulation and are easily decoded. Here are some basic considerations to keep in mind when using tokens: