enc-x

Encrypt and decrypt any file with a password. Fast, secure, works on files of any size.

The command automatically detects whether to encrypt or decrypt based on the file extension.

Install

npm install -g enc-x

Usage

Encrypt

enc-x <file> -k <password>

enc-x video.mp4 -k "mypassword"
# → video.mp4.enc-x

Decrypt

enc-x <file.enc-x> -k <password>

enc-x video.mp4.enc-x -k "mypassword"
# → video.mp4

Custom output path

enc-x report.pdf -k "pass" -o /secure/report.pdf.enc-x
enc-x report.pdf.enc-x -k "pass" -o ./report.pdf

Options

| Option | Short | Description | | ------------------ | ----- | ------------------- | | --key <password> | -k | Password (required) | | --output <path> | -o | Custom output path | | --help | -h | Show help | | --version | -v | Show version |

Wrong password

If the password is wrong, the output file is deleted and you'll see:

✖ Invalid password or corrupted file

How it works

• Pass any file → encrypts it and adds .enc-x extension
• Pass a .enc-x file → decrypts it and restores the original filename
• Encryption: AES-256-GCM
• Key derivation: PBKDF2-SHA512, 100,000 iterations, random salt per file
• Streaming I/O — no memory issues with large files