Encrypt or decrypt a file locally with a password. New encrypted downloads use the Classic Converter CCENC2 format with a fresh salt, initialization vector and AES-GCM ciphertext.
How to use this tool
- Select Encrypt or Decrypt and choose the file.
- Enter the password and run the operation.
- Download the result. Before discarding an original, test that you can decrypt a copy with the saved password.
How to interpret the result
This is a custom encrypted-file format, not ZIP or PDF password protection. The browser processes the file in memory. Losing the password can make the encrypted data unrecoverable; the site does not keep a recovery key.
Frequently asked questions
Can it open older Classic Converter files?
The implementation also supports the earlier CCENC1 format for decryption. New encryption uses CCENC2; unrelated encrypted formats require their original software.