jwt

Decoding and verifying JWT token using System.IdentityModel.Tokens.Jwt

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Within the package there is a class called JwtSecurityTokenHandler which derives from System.IdentityModel.Tokens.SecurityTokenHandler. In WIF this is the core class for deserialising and serialising security tokens. The class has a ReadToken(String) method that will take your base64 encoded JWT string and returns a SecurityToken which represents the JWT. The SecurityTokenHandler also has a ValidateToken(SecurityToken) method … Read more

Do I have to store tokens in cookies or localstorage or session?

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This answer is based on the stateless approach and therefore it doesn’t talk about the traditional session management You have asked two altogether different questions: Shopping cart – which is more related to business functionality OAuth 2 & JWT – which is related to security and authentication As an user of an ecommerce website, I’d … Read more

Service Applications and Google Analytics API V3: Server-to-server OAuth2 authentication?

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UPDATE July 21st, 2012 Google Analytics API V3 now supports OAuth2 tokens returned by a .p12-signed JWT request. That is, we can now use the Analytics API w/ service accounts. Currently pulling 4 years of day-by-day metrics, just for the hell of it. Here’s a quick ‘n’ dirty step-by-step: Go to the Google API Console … Read more

Invalidating client side JWT session

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There are several reason to invalidate a JWT token before its expiration time: account deleted/blocked/suspended, password changed, permissions changed, user logged out by admin. So your question is on topic There are several techniques to apply or combine depending on your use case 1) Remove the client token from local storage 2) Token blacklist: Store … Read more

Authenticating socket io connections using JWT

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It doesn’t matter if the token was created on another server. You can still verify it if you have the right secret key and algorithm. Implementation with jsonwebtoken module client const {token} = sessionStorage; const socket = io.connect(‘http://localhost:3000’, { query: {token} }); Server const io = require(‘socket.io’)(); const jwt = require(‘jsonwebtoken’); io.use(function(socket, next){ if (socket.handshake.query … Read more

How Spring Security Filter Chain works

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The Spring security filter chain is a very complex and flexible engine. Key filters in the chain are (in the order) SecurityContextPersistenceFilter (restores Authentication from JSESSIONID) UsernamePasswordAuthenticationFilter (performs authentication) ExceptionTranslationFilter (catch security exceptions from FilterSecurityInterceptor) FilterSecurityInterceptor (may throw authentication and authorization exceptions) Looking at the current stable release 4.2.1 documentation, section 13.3 Filter Ordering you … Read more

Verifying JWT signed with the RS256 algorithm using public key in C#

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Thanks to jwilleke, I have got a solution. To verify the RS256 signature of a JWT, it is needed to use the RSAPKCS1SignatureDeformatter class and its VerifySignature method. Here is the exact code for my sample data: string tokenStr = “eyJraWQiOiIxZTlnZGs3IiwiYWxnIjoiUlMyNTYifQ.ewogImlzcyI6ICJodHRwOi8vc2VydmVyLmV4YW1wbGUuY29tIiwKICJzdWIiOiAiMjQ4Mjg5NzYxMDAxIiwKICJhdWQiOiAiczZCaGRSa3F0MyIsCiAibm9uY2UiOiAibi0wUzZfV3pBMk1qIiwKICJleHAiOiAxMzExMjgxOTcwLAogImlhdCI6IDEzMTEyODA5NzAsCiAiY19oYXNoIjogIkxEa3RLZG9RYWszUGswY25YeENsdEEiCn0.XW6uhdrkBgcGx6zVIrCiROpWURs-4goO1sKA4m9jhJIImiGg5muPUcNegx6sSv43c5DSn37sxCRrDZZm4ZPBKKgtYASMcE20SDgvYJdJS0cyuFw7Ijp_7WnIjcrl6B5cmoM6ylCvsLMwkoQAxVublMwH10oAxjzD6NEFsu9nipkszWhsPePf_rM4eMpkmCbTzume-fzZIi5VjdWGGEmzTg32h3jiex-r5WTHbj-u5HL7u_KP3rmbdYNzlzd1xWRYTUs4E8nOTgzAUwvwXkIQhOh5TPcSMBYy6X3E7-_gr9Ue6n4ND7hTFhtjYs3cjNKIA08qm5cpVYFMFMG6PkhzLQ”; string[] tokenParts = tokenStr.Split(‘.’); RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(); rsa.ImportParameters( new RSAParameters() { Modulus … Read more