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A Software Engineer with more than 7 years of experience.

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https://www.linkedin.com/in/harsha-jayamanna-26996827/
https://github.com/h-hub
https://stackoverflow.com/users/2184946/harshakj89
https://twitter.com/HarshaJayamanna

Email: harsha.kj89[at]gmail[dot]com

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Difference between AWS IAM Users,Policies, Roles & Groups

AWS Identity and Access Management (IAM) is a web service that helps you securely control access to AWS resources. It controls who can sign in to your AWS infrastructure and who is authorized to use the resources (EC2, VPS, IoT, Cognito, and etc) When I started earning AWS for the first, I had difficulties identifying the difference between Cognito and IAM. Cognito is a user management solution for your enterprise applications that also use IAM (Spring, JakartaEE, Angular, or any other application that you develop.) Check this example: https://www.harshajayamanna.com/2019/10/aws-cognito-spring-complete-example.html On the other hand, IAM is for the management of users in your AWS infrastructure. Root User When you sign up with AWS services for the first time, a Root user is created that has complete access to all AWS services and resources in the account. AWS recommends that we should not use this account to continue day-to-day tasks, instead, the first step is to create the first

Upload files to AWS S3 using Java, Spring Boot, and Angular

In this post, I have explained how to securely upload files(Images) to AWS S3 using Spring boot and Angular. This application is secured using AWS Cognito. Even though I'm going to explain how to secure the application using AWS Cognito, Below blog posts contain more details. Please check those too. Use Spring Resource Server with AWS Cognito Secure APIs and Access AWS Resources with Angular and Cognito Securing the Application In order to secure your Spring boot application, we can use the Spring boot oauth2 resource server. To use the resource server with AWS Cognito, you have to configure the application by putting spring.security.oauth2.resourceserver.jwt.issuer-uri and spring.security.oauth2.resourceserver.jwt.jwk-set-uri in the application.properties file. To integrate the secured Spring boot application with the Angular application, we need to configure the Angular application by including a configuration file which contains the Cognito user pool and identity pool values

AWS ACM PCA for AWS IoT and SSL Pinning

Photo by Micah Williams on Unsplash AWS ACM PCA ACM Private CA enables the creation of private certificate authority (CA) hierarchies, including root and subordinate CAs[2]. What is a certificate authority (CA)? A certificate authority (CA), also sometimes referred to as a certification authority, is a company or organization that acts to validate the identities of entities[1]. There are many companies in the world that are CAs. You can buy services from them and use them to enable HTTPS in your websites among other things. In your Browser's address bar, there is a padlock icon and by clicking on it you can see the CA for the certificate that is being used by the website you are in. Figure 1: CA The above diagram shows the root CA(Google Trust Services - GlobalSign Root CA-R2) for the blogger.com platform. These certificates were provided by a company called GlobalSign . You will also see that there are three certificates in the image in a hierarchical structure. More about th

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