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pagecrypt

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pagecrypt

Easily add client-side password-protection to your Single Page Applications and HTML files.

  • 3.3.0
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  • npm
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PageCrypt - Password Protected Single Page Applications and HTML files

Easily add client-side password-protection to your Single Page Applications and HTML files.

Inspired by MaxLaumeister/PageCrypt. Thanks for sharing an excellent starting point to create this tool!

Get started

There are 3 different ways to use pagecrypt:

1. CLI

Encrypt a single HTML-file with one command:

npx pagecrypt <src> <dest> [password] [options]

Encrypt using a generate password with given length:

npx pagecrypt <src> <dest> -g <length>
1.1. CLI Help
  Description
    Encrypt the <src> HTML file with [password] and save the result in the <dest> HTML file.

  Usage
    $ pagecrypt <src> <dest> [password] [options]

  Options
    -g, --generate-password    Generate a random password with given length. Must be a number if used.
    -v, --version              Displays current version
    -h, --help                 Displays this message

  Examples
    $ pagecrypt index.html encrypted.html password
    $ pagecrypt index.html encrypted.html --generate-password 64
    $ pagecrypt index.html encrypted.html -g 64

2. Automate pagecrypt in your build process

This allows automated encrypted builds for single page applications

npm i -D pagecrypt

package.json:

{
    "devDependencies": {
        "pagecrypt": "^3.0.0"
    },
    "scripts": {
        "build": "...",
        "postbuild": "pagecrypt index.html encrypted.html password"
    }
}

3. Node.js API

You can also use pagecrypt in your Node.js scripts:

encrypt(inputFile: string, outputFile: string, password: string): Promise<void>
import { encrypt } from 'pagecrypt'

// Encrypt a HTML file and write to the filesystem
await encrypt('index.html', 'encrypted.html', 'password')
encryptHTML(inputHTML: string, password: string): Promise<string>
import { encryptHTML } from 'pagecrypt'

// Encrypt a HTML string and return an encrypted HTML string.
// Write it to a file or send as an HTTPS response.
const encryptedHTML = await encryptHTML(
    `<!DOCTYPE html>
    <html lang="en">
        <head>
            <meta charset="UTF-8">
        </head>
        <body>
            Secret
        </body>
    </html>
`,
    'password',
)
generatePassword(length: number): string
import { generatePassword, encrypt, encryptHTML } from 'pagecrypt'

// Generate a random password without any external dependencies
const pass = generatePassword(64)

// Works with both JS API:s
await encrypt('index.html', 'encrypted.html', pass)
const encryptedHTML = await encryptHTML('html string', pass)

Development

The project consists of four parts:

  • /web - Web frontend for public webpage (decrypt-template.html). Built using Vite & Tailwind CSS.
  • /index.js - pagecrypt main library.
  • /cli.js - pagecrypt CLI.
  • /test - testing setup

Setup a local development environment

  1. Install Node.js >= 15.0.0
  2. Run npm install in project root.
  3. Install and use mkcert to generate local certificates to enable HTTPS for the development server. For example mkcert localhost 192.168.1.32 to generate a two files ending with *.pem.
  4. Update vite.config.js to load the generated *.pem files in the https section.
  5. To use npm run serve, also update to the correct *.pem filenames in the npm script.

Testing

npm test will run basic tests for JS API and CLI. Verify test results by opening the test/out-*.html files in your browser.


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Package last updated on 25 Apr 2021

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