Picocrypt ((new)) Jun 2026

Double click. No installation wizard. No "Allow admin access" popup. It just opens.

Small enough to audit line-by-line. Simple enough that you cannot accidentally create an insecure archive. picocrypt

is a lightweight, open-source file encryption tool designed for high security and extreme simplicity Double click

: If you have a massive file, you can choose to split the output into smaller pieces (KiB, MiB, GiB, or TiB) for easier uploading to cloud storage. It just opens

, a high-speed stream cipher that provides a 192-bit nonce, making it extremely resistant to nonce-reuse attacks compared to standard AES-GCM. Key Derivation

The combination of XChaCha20-Poly1305 and Argon2id is considered highly secure by modern standards. It represents a shift away from AES-CBC or AES-CTR modes found in older tools, which are prone to padding oracle attacks if implemented incorrectly. The authenticated encryption provided by Poly1305 ensures that any modification to the ciphertext is detected before decryption occurs.