Offline password manager

How to Store Passwords Without the Cloud

Published March 19, 2026 · 6 min read

Not everyone is comfortable storing passwords on someone else's server. Cloud breaches, privacy policies that change without notice, and vendor lock-in are all real concerns. The good news: there is a straightforward way to store passwords without the cloud, using a local encrypted vault.

Why avoid cloud password storage?

Cloud password managers are popular because they sync across devices. But that convenience comes at a cost:

Between 2022 and 2025, multiple cloud password managers reported breaches or security incidents. In each case, the fundamental issue was the same: user vaults existed on remote infrastructure. Removing that infrastructure from the equation eliminates the risk entirely.

The alternative: a local encrypted vault

A local vault stores your passwords in an encrypted file on your own device. Here's what that means in practice:

This approach eliminates the entire category of remote breach risks. An attacker would need physical access to your device and your master password to read the vault.

How to set up local password storage with OneCritto

OneCritto is an offline password manager that implements exactly this model. Here's how to get started:

  1. Download the installer — visit onecritto.com/download. No account or email required.
  2. Install and launch — extract the archive and run the application. No configuration needed.
  3. Create your vault — choose a strong master password. OneCritto creates an AES-256 GCM encrypted vault on your local disk.
  4. Add your credentials — store passwords, file attachments, and private notes inside the vault.
  5. Back up the vault file — copy the encrypted file to a USB drive or external disk for extra safety.

That's it. Your passwords are stored locally, encrypted with AES-256 GCM, and accessible only with your master password.

What about backups?

One concern with local storage is data loss — what if your disk fails? The solution is simple: the vault is a single encrypted file you can copy anywhere.

Since the vault is encrypted with AES-256, even if the backup medium is lost or stolen, the contents remain protected without the master password.

How secure is AES-256 for password storage?

AES-256 is the same encryption standard used by governments and military organizations worldwide. The "256" refers to the key length in bits — which means there are 2256 possible keys. For context, brute-forcing AES-256 is considered computationally infeasible with current technology.

OneCritto uses AES-256 in GCM mode (Galois/Counter Mode), which provides both confidentiality and authenticity. The vault file can also be verified using SHA-256 checksums to detect any tampering.

What about browser password managers?

Most browsers offer built-in password storage. While convenient, browser password managers have significant limitations:

A dedicated offline password manager provides stronger encryption, more storage flexibility, and clearer separation between your OS and your secrets.

FAQ

Can I store files and notes too, or just passwords?

OneCritto stores passwords, file attachments, and private notes in the same encrypted vault. You can keep documents, recovery codes, certificates, and any other sensitive data alongside your credentials.

What happens if I forget my master password?

There is no way to recover the master password. No cloud account means no "reset password" email. This is by design — it ensures that only you can access the vault.

Does this work on Linux?

Yes. OneCritto runs natively on Linux and Windows. The same license covers both operating systems.

Is there a free trial?

Yes. OneCritto offers a 15-day free trial with full features. No credit card, no email sign-up, no feature limitations.

Store your passwords locally, securely

Try OneCritto free for 15 days. AES-256 encryption, no cloud, no account.

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No credit card · No sign-up · Linux + Windows