Picocrypt [OFFICIAL]

Picocrypt is a highly secure, lightweight, and open-source file encryption tool designed to be the go-to utility for simple "encrypt-and-go" needs

Deep Feature: Adaptive Hidden Volume & Plausible Deniability Engine

Here's an overview:

Introduction

This is Picocrypt’s killer feature. Most encryption tools (like 7-Zip or classic GPG) will decrypt a file even if the data has been slightly corrupted, producing garbled nonsense. You won't know your file is broken until you open it. picocrypt