A C# class that can sign and validate JWT tokens, wrapped in a simple library with a couple of helper functions.
To generate a compatible private key
openssl genrsa -out private.key 4096 To genarate a compatible certificate from the private key
openssl req -new -x509 -key private.key -out cert.pem -days 360 To generate a compatible public key from the private key
openssl rsa -in private.key -outform PEM -pubout -out public.pem using Newtonsoft.Json; JwtManager.RsJwt jwt = new JwtManager.RsJwt { KeySize = JwtManager.Helpers.KeySize.S256, // This can be also S384 or S512 PrivateKey = PrivateKey }; string strToken = JsonConvert.SerializeObject(myToken); string signedToken = jwt.Sign(strToken);In case of an error, an Exception will be thrown.
using Newtonsoft.Json; JwtManager.RsJwt jwt = new JwtManager.RsJwt { KeySize = JwtManager.Helpers.KeySize.S256, // This can be also S384 or S512 PublicKey = PublicKey }; string payload = jwt.Validate(strToken); var myToken = JsonConvert.DeserializeObject<JwtToken>(payload);using Newtonsoft.Json; JwtManager.RsJwt jwt = new JwtManager.RsJwt { KeySize = JwtManager.Helpers.KeySize.S256, // This can be also S384 or S512 Certificate = Certificate }; string payload = jwt.Validate(strToken); var myToken = JsonConvert.DeserializeObject<JwtToken>(payload);In case of an error, an Exception will be thrown.
For this you need a secret in a string variable. Longer secret is better
using Newtonsoft.Json; string secret = "setyourverysecretkeyhere"; JwtManager.HsJwt jwt = new JwtManager.HsJwt { KeySize = JwtManager.Helpers.KeySize.S256, // This can be also S384 or S512 Secret = secret }; string strToken = JsonConvert.SerializeObject(myToken); string signedToken = jwt.Sign(strToken);In case of an error, an Exception will be thrown.
using Newtonsoft.Json; string secret = "setyourverysecretkeyhere"; JwtManager.HsJwt jwt = new JwtManager.HsJwt { KeySize = JwtManager.Helpers.KeySize.S256, // This can be also S384 or S512 Secret = secret }; string payload = jwt.Validate(strToken); var myToken = JsonConvert.DeserializeObject<JwtToken>(payload);In case of an error, an Exception will be thrown.
The code has been tested both as a .NET and .NET Core library.
Check the JwtManagerTests project for more examples on how to use