CIPHERBIN
Zero-Knowledge Paste
// Step 01 / Compose

Paste it. Lock it.
Disappear it.

Content is encrypted in your browser with AES-256-GCM before it ever leaves the device. The server adds a second Fernet layer, and the decryption key lives only in the URL you share.

Plaintext Buffer · local only
0 chars1 lines0.00 KB
/dev/null ← what the server sees of your plaintext
Zero-knowledge

Encryption key never touches our servers. It lives in the URL fragment, which browsers don't transmit.

Dual-layer

Browser-side AES-256-GCM is wrapped again by Fernet (AES-128-CBC + HMAC) on the server.

Ephemeral by design

Burn-after-read, view limits, and TTL expiry guarantee secrets do not linger.

CIPHERBIN

A zero-knowledge pastebin. Your content is encrypted in the browser using AES-256-GCM, then re-encrypted server-side with Fernet. We never see your plaintext. Ever.

Protections
  • Client-side AES-256
  • Server-side Fernet
  • Burn after reading
Lifecycle
  • Auto-expiry
  • View limits
// no logs · no accounts · no trackingv0.1.0

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