Assignment 01 – Solution in Golang

This project is a simple authentication flow implemented in Golang, demonstrating user signup, login, and OTP-based verification using in-memory storage.

How to Run

go run .

The server starts on http://localhost:8080 and maintains user data in memory for the duration of its execution.

Request–Response Handling

1. Signup User

POST /signup

Request

{
  "name": "cheems",
  "password": "cheems@123"
}

Response

{
  "name": "cheems",
  "password": "JDJhJDEwJHQ3OGFsNUdLODhLTzVHQ0g0djFWOC43bFF3cm9PRTlvUnZXalZieXRyVWtOUFlSVEhuME5p"
}

2. Login User

POST /login

Request

{
  "name": "cheems",
  "password": "cheems@123"
}

Response

{
  "message": "User Logged in Successfully!"
}

During login, a One-Time Password (OTP) is generated and logged to the server console. This OTP is required for the next step.

3. OTP Verification

POST /otp

Request

{
  "otp": "467448"
}

Response

{
  "message": "Welcome to Nirvana"
}

Notes

• User data is stored in memory while the server is running.
• Passwords are securely hashed before storage.
• Accurate HTTP status codes are returned for all responses.
• Responses are properly encapsulated and structured.