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Geslar

Secure Send

Share passwords securely — encrypted, PIN-protected, self-destructing.

Share passwords securely

Secure Send lets you share passwords or sensitive text with anyone — even if they don't use Geslar. The data is encrypted client-side before leaving your device.

How it works
Client-side encryption
The text is encrypted in your browser with AES-256-GCM before being sent. The server receives only the encrypted blob.
PIN protection
You set a 4-8 digit PIN that the recipient needs to enter. Send the PIN through a different channel (e.g. phone call).
Auto-expiry
The link expires automatically after a set time: 1 hour, 24 hours or 7 days.
One-time read
Optionally, the message self-destructs after the first read. Once opened, it's gone forever.
Sending
  1. Open geslar.app and go to the "Secure Send" section, or click "Send" on any record in Škrinjar.
  2. Enter the text or password you want to share.
  3. Set a PIN (4-8 digits).
  4. Choose expiry time and whether it's one-time read.
  5. Click "Encrypt & Send".
  6. Copy the generated link and send it to the recipient.
  7. Send the PIN separately (phone, in person, different app).
Receiving
  1. Open the link the sender shared with you.
  2. Enter the PIN.
  3. The message is decrypted in your browser — the server never sees the plain text.