REACT NATIVE DECODE JWT HOW TO

JWT Structure Before Decoding How to use Online JWT Encoder/Decoder? Reference: Importance of using strong keys with JWT Otherwise, your signing key may be cracked with brute force. If you are using HSxxx (symmetric) algorithms, for security reasons, it is advised to have 256 bit (32 characters), 384 bit (48 characters), 512 bit (64 characters) and longer signing keys for HS256, HS384 & HS512 respectively. Even if the signature is invalid, you will still see the payload and header of the JSON web token. Meta data of the token is stored in the header section like what is the algorithm etc.įor JWT decoding, you can either verify the signing key or not. Even if they are not mandatory, it is advised to use them for defining the data and data validity better. There are some predefined claims such as 'iss' (issuer), 'exp' (expiration time), 'sub' (subject), 'aud' (audience) that is stored in the payload of a JWT. When you send data from server to client and get it back, you verify your data with this signature. Signature is very important for securely transferring this data. Header and payload of the JWT can be seen by everyone after decoding.

Therefore, all JWT have a structure of ''. There are 3 parts of a JWT which are separated with dots. If there is one key that is used both for encoding and decoding JWT, it is called symmetric algorithm, if there is a public/private key pair, then it is called asymmetric algorithm. Private key is using in encoding while public key is used for decoding JWT. HSxxx algorithms works with a single signing key as a string while RSxxx and ESxxx algorithms works with a public & private key pair. You can use this tool as an online JWT debugger, so you can sign a JWT with a signing key or private key, verify a JWT with a signing key or public key, or just decode a JWT without verifying the signature. JWT is a standard for transferring JSON data securely by signing it with a key. JWT Encoder/Decoder is a free online tool for encoding and decoding JWT (JSON Web Token).

React native decode jwt