Hello, We have implemented an AWS lambda function in C# (.NET8). This lambda is an authorizer in our API Gateway. Its role is to decided if the received request can be sent to the api behind the gateway. As we use the Authorization Code Flow, the request will contain a json web token signed by our…

Hello Vlad, Your first link gave me the information I was missing: the key id (kid) of the public key can be found in the token header. So, I can read the Json web key set and store it as a dictionary (kid, public key). When I need to validate a token, I just need to read the kid in the header and…

Validate JWT in a C# AWS lambda function

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Validate JWT in a C# AWS lambda function

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