FixIt/packages/post-encrypt

@hugo-fixit/post-encrypt

Post-build AES-256-GCM encryption tool for the FixIt Hugo theme.

It is designed for HTML generated by FixIt content encryption templates and should be run after your site has already been built.

Usage

After building your Hugo site, run the encryption tool from your site root:

npx @hugo-fixit/post-encrypt

You can also install it globally and run the CLI directly:

npm install -g @hugo-fixit/post-encrypt
post-encrypt

Typical build flow:

hugo build
npx @hugo-fixit/post-encrypt
npx @hugo-fixit/post-encrypt --verify

Options

Option	Description	Default
--input <dir>	Input directory containing HTML files	public
--dry-run	Show which files would be modified without writing	false
--verify	Verify all encryption templates are encrypted	false
-h, --help	Show CLI usage help

Examples

# Show CLI help
npx @hugo-fixit/post-encrypt --help

# Encrypt content in the default public/ directory
npx @hugo-fixit/post-encrypt

# Encrypt content in a custom directory
npx @hugo-fixit/post-encrypt --input dist

# Verify encryption without modifying files
npx @hugo-fixit/post-encrypt --verify

# Dry run to see which files would be changed
npx @hugo-fixit/post-encrypt --dry-run

How It Works

1. Scans all .html files in the input directory
2. Finds <template data-password="..."> elements (encryption placeholders)
3. Encrypts the plaintext content using AES-256-GCM with PBKDF2 key derivation
4. Replaces the data-password hash with a PBKDF2-protected version
5. Writes the encrypted payload back to the template element

Security

• Algorithm: AES-256-GCM (authenticated encryption)
• Key derivation: PBKDF2 with 100,000 iterations and random 16-byte salt
• Password verification: PBKDF2-protected hash (not raw SHA-256)
• Payload format: base64(salt).base64(iv).base64(ciphertext+tag)

License

MIT