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https://github.com/parksb/darim
A private journal application that supports client-side encryption
https://github.com/parksb/darim
calendar client-side-encryption diary markdown note personal-journal security
Last synced: about 2 months ago
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A private journal application that supports client-side encryption
- Host: GitHub
- URL: https://github.com/parksb/darim
- Owner: parksb
- License: agpl-3.0
- Created: 2020-04-15T01:06:37.000Z (over 4 years ago)
- Default Branch: master
- Last Pushed: 2024-05-07T06:37:18.000Z (4 months ago)
- Last Synced: 2024-06-27T07:10:40.055Z (3 months ago)
- Topics: calendar, client-side-encryption, diary, markdown, note, personal-journal, security
- Language: Rust
- Homepage: https://darim.harooo.com
- Size: 3.39 MB
- Stars: 50
- Watchers: 4
- Forks: 7
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
- awesome-list - darim - side encryption | parksb | 30 | (Rust)
README
# 🏕 Darim
[](https://github.com/ParkSB/darim/actions?query=workflow%3A%22Client+CI%22)
[](https://github.com/parksb/darim/actions?query=workflow%3A%22API+Gateway+CI%22)
[](https://github.com/ParkSB/darim/actions?query=workflow%3A%22Server+CI%22)
* Darim: Diary Improved
* Darim is a personal diary service that supports encryption, calendar view, and markdown syntax.
* You can keep your diary a secret even from the developer through client-side encryption.
## Architecture
* Darim is following the layered architecture.
* Each layer cannot be cross-referenced. All references between layers can flow in a higher direction. In other words, only the upper layer can invoke the lower layer members.
### [Client](client)
* `index.html` - An entry point of the application. It is built by parcel.
* Pages - Pages represented by URL. Each page can use general components, API fetchers, and models.
* Components - Reusable components used on multiple pages.
### [API Gateway](api-gateway) & [Server](server)
* `main.rs` - An entry point of the application. It runs a http server.
* Routes - A presentation layer that makes API public and passes request/response data to other layers.
* Services - A business layer that processes the transaction.
* Models - A data layer that can access the database and define data structures.
## Client-side Encryption
Darim supports client-side encryption to protect the user's secrect from others including server.
### Key generation
```mermaid
%%{init: {'theme': 'neutral'}}%%
sequenceDiagram
Note over client: generates
secret and public
Note over client: encrypts secret
using public
client ->> local storage: set(encrypted_secret)
client ->> server: POST /public_key { public }
server ->> rdb: INSERT public
rdb -->> server: [OK 200]
server -->> client: [OK 200]
```
1. When a user finishes the sign-up process, a secret key and public key are generated on the client-side.
1. The client encrypts the secret key using the public key and saves the encrypted secret key to local storage.
1. The public key is sent to the server, and the server stores it.
### Read & Write
```mermaid
%%{init: {'theme': 'neutral'}}%%
sequenceDiagram
Note over client: creates a new post
client ->> local storage: get(encrypted_secret)
local storage -->> client: encrypted_secret
client ->> server: GET /public_key
server ->> rdb: SELECT public
rdb -->> server: [OK 200] { public }
server -->> client: [OK 200] { public }
Note over client: decrypts
encrypted_secret
using public
Note over client: encrypts the post
using secret
client ->> server: POST /post { encrypted_post }
server ->> rdb: INSERT encrypted_post
rdb -->> server: [OK 200]
server -->> client: [OK 200]
```
1. After a user creates a new plaintext post, the client requests the public key to the server.
1. The client decrypts the encrypted secret key in the local storage using the public key from the server.
1. The plaintext post is encrypted by the secret key decrypted by the public key.
1. The encrypted post is sent to the server, and the server stores it.
> * At this point, the server can only know encrypted post.
> * If the client reads a post, the flow is the same until the client requests to create a post to the server.
## License
This project is distributed under the AGPL-3.0 License - see the [LICENSE](LICENSE) file for details.