# Czip X encrypted archive (v4.x) — file signature 43 5A 50 58 at offset 0

For Czip X encrypted archive (v4.x), hex signature is 43 5A 50 58; offset is 0; extension is czx, verified against its source on 2026-09-22.

- **Hex signature:** 43 5A 50 58 _(verified: appears in the quote below)_
- **Offset:** 0 _(verified: appears in the quote below)_
- **Extension:** czx _(verified: appears in the quote below)_
- **Format:** Czip X encrypted archive (v4.x) _(verified: appears in the quote below)_

## What the source says

> 43 5A 50 58 | CZPX | 0 | czx | Czip X encrypted archive (v4.x) |

## Source

- https://en.wikipedia.org/wiki/List_of_file_signatures

Last verified: 2026-09-22. Review by: 2027-09-22.
Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).