Picocrypt

Using Picocrypt is simpler than using an ATM.

Step 1: Download the executable from the official GitHub repository (or the website picocrypt.org). Do not download from third-party stores. Step 2: Run the .exe (Windows), .app (macOS), or .AppImage (Linux). No installation wizard. Step 3: Drag your file (or folder) into the window. Step 4: Enter your password. (Strongly recommended: Enable "Store password in memory" and "Parity" for error correction). Step 5: Click Encrypt.

In ~2 seconds, you will have a new file named myfile.pcv. That is your encrypted volume. To decrypt it, drag the .pcv file back into Picocrypt, enter the password, and click Decrypt.

| Feature | Picocrypt | VeraCrypt | GPG (symm) | Age | |-----------------------------|-------------------|-------------------|-------------------|-------------------| | Authenticated encryption | Yes (XChaCha20-Poly1305) | No (XTS mode, no auth) | Optional (requires AEAD) | Yes (ChaCha20-Poly1305) | | Modern KDF | Argon2id | PBKDF2 (customizable) | s2k (iterated) | scrypt | | Graphical interface | Yes (FLTK) | Yes | No (via GUI wrappers) | No | | Lines of code (core) | ~2,000 | >200,000 | >100,000 | ~5,000 | | Reed‑Solomon error correction| Yes | No | No | No | | Portable executable (~5 MB) | Yes | No (requires install) | No | Yes (binary) | picocrypt

Notably, Picocrypt is one of the few tools that integrates error correction before encryption, allowing recovery from bitrot on unreliable storage (e.g., cheap USB drives, optical media).

It uses SHA3-256 for hashing, which is robust against length extension attacks (unlike SHA2).

Click "Encrypt." It creates a .pcv file (Picocrypt Volume). Using Picocrypt is simpler than using an ATM

Decrypting: Double click the .pcv file. Enter password. Click "Decrypt." Done.

Closed-source encryption is mathematically equivalent to a trap door. You cannot verify that Microsoft or AxCrypt doesn't have a master backdoor for law enforcement. Furthermore, if those companies vanish, your data is locked forever.

Picocrypt solves all three: No install, no dependencies, completely open source (MIT License), and only 2,000 lines of code. Click "Encrypt

| Feature | Picocrypt | VeraCrypt | 7-Zip (ZipCrypto) | Cryptomator | | :--- | :--- | :--- | :--- | :--- | | File Size | ~3 MB | ~15 MB | ~1 MB | ~200 MB (JVM) | | Admin Rights Required | No | Yes | Yes | Yes | | Error Correction (Parity) | Yes | No | No | No | | Cloud-Friendly | Yes (split archives) | No | Yes | Yes | | Post-Quantum Ready? | Yes (XChaCha20) | No (AES) | No | No | | Source Code Lines | ~2,000 | ~500,000 | ~100,000+ | ~80,000+ |

The Verdict: Picocrypt is not "just as good." It is objectively better for single-file, offline, high-security archiving.

| Feature | Picocrypt | VeraCrypt | Cryptomator | 7-Zip (AES-256) | |--------|-----------|-----------|--------------|------------------| | Authenticated encryption | ✅ (GCM/HMAC-SHA3) | ❌ (XTS mode, no auth) | ✅ (AES-GCM) | ❌ (CRC32, no auth) | | Argon2id KDF | ✅ | ❌ (PBKDF2 only) | ✅ (scrypt) | ❌ (PBKDF2) | | Portable exe | ✅ | ❌ (may need drivers) | ❌ (Java/install) | ✅ | | Folder encryption | ❌ (requires zip) | ✅ (volume) | ✅ (virtual FS) | ✅ | | On-the-fly mounting | ❌ | ✅ | ✅ | ❌ | | External audit | ⚠️ Small scale | ✅ Many audits | ✅ Partial | ✅ (but not for KDF/auth) |

Bottom line: Picocrypt is more secure than 7-Zip or classic ZIP crypto, simpler than VeraCrypt for single-file use, and more portable than Cryptomator.