How Verify Access Token Signature

Help
1

Hi guys,
I’d like to understand how does jwt.io website verify the signature?

i need to implement jwt signature verification on my system but i don’t understand which provider to use.

I don’t have providerUrl

This is my code:

	JwkProvider provider = new UrlJwkProvider(providerUrl);		
	DecodedJWT jwt = JWT.decode(accessToken);
	Jwk jwk = provider.get(jwt.getKeyId());
	Algorithm algorithm = Algorithm.RSA256((RSAPublicKey) jwk.getPublicKey(), null);
	algorithm.verify(jwt);

Please help me to understand

Thanks

2

Hello @luk3tt0,

Were you able to find a library in the language you are using? JSON Web Tokens - jwt.io

I’d recommend checking out the respective docs for one of those.

3

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