Spring Security JWT Authentication + PostgreSQL - RestAPIs SpringBoot + Spring MVC

Spring Security JWT Authentication + PostgreSQL - RestAPIs SpringBoot + Spring MVC

JSON Web Token defines a compact and self-contained way for securely transmitting information as a JSON object. In the tutorial, we show how to build a SpringBoot Security RestAPIs with JSON Web Token (JWT). Related posts: – Spring Security – JDBC Authentication – SpringBoot + PostgreSQL + Bootstrap – SQL Tutorial – MySQL Many-to-Many Relationship … Continue reading "Spring Security JWT Authentication + PostgreSQL – RestAPIs SpringBoot + Spring MVC + Spring JPA"

https://grokonez.com/spring-framework/spring-boot/spring-security-jwt-authentication-postgresql-restapis-springboot-spring-mvc-spring-jpa

Spring Security JWT Authentication + PostgreSQL – RestAPIs SpringBoot + Spring MVC + Spring JPA

JSON Web Token defines a compact and self-contained way for securely transmitting information as a JSON object. In the tutorial, we show how to build a SpringBoot Security RestAPIs with JSON Web Token (JWT).

Related posts:

Technologies

- Spring Boot - jjwt - 0.9.0 - Spring Security - Spring JPA - PostgreSQL

JSON Web Token

JSON Web Token (JWT) defines a compact and self-contained way for securely transmitting information between parties as a JSON object.

Scenarios where JSON Web Tokens are useful:

  • Authorization: the most common scenario for using JWT. Single Sign On is a feature that widely uses JWT
  • Information Exchange: Because JWTs can be signed, JSON Web Tokens are a good way of securely transmitting information between parties.

JSON Web Tokens consist of 3 parts:

  • Header
  • Payload
  • Signature

-> JWT looks like Header-Base64-String.Payload-Base64-String.Signature-Base64-String

Header consists of two parts:

  • token type.
  • hashing algorithm.

-> Example:

{
  "alg": "HS256",
  "typ": "JWT"
}

Payload contains the claims. Claims are statements about an entity and additional information. There are 3 types of claims ->

  • Registered claims -> These are a set of predefined claims: iss (issuer), exp (expiration time), sub (subject)
  • Public claims
  • Private claims

Example ->

{
  "sub": "thomasgkz",
  "iat": 1537603195,
  "exp": 1537689595
}

Signature -> To create the signature part you have to take the encoded header, the encoded payload, a secret, the algorithm specified in the header, and sign that.

Example ->


HMACSHA512(
  base64UrlEncode(header) + "." +
  base64UrlEncode(payload),
  your-256-bit-secret
)

Combine all together, we get 3 Base64-URL strings separated by dots,

-> Example:

https://grokonez.com/spring-framework/spring-boot/spring-security-jwt-authentication-postgresql-restapis-springboot-spring-mvc-spring-jpa

Spring Security JWT Authentication + PostgreSQL – RestAPIs SpringBoot + Spring MVC + Spring JPA

springsecurity springboot authentication jwt postgresql restapi

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JSON Web Token defines a compact and self-contained way for securely transmitting information as a JSON object. In the tutorial, we show how to build a SpringBoot Security RestAPIs with JSON Web Token (JWT). Related posts: – Spring Security – JDBC Authentication – SpringBoot + MySQL + Bootstrap – SQL Tutorial – MySQL Many-to-Many Relationship … Continue reading "Spring Security JWT Authentication example – RestAPIs SpringBoot + Spring MVC + Spring JPA + MySQL"

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