Computer scienceBackendKtorKtor PluginsAuthentication

JWT Authentication

Theory

JWT token signature

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We want to create a JWT token and sign it using the HS256 algorithm. We encoded the header and payload using Base64URL and got:

Header: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9

Payload: eyJpZCI6IjIzOTE3NiIsIm5hbWUiOiJCb2IgU2FsZXZhbiJ9

Calculate the resulting signature of this token using the key: "abrasecret123".

You can use hmac hash online or JWT.IO service for JWT tokens.

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