Share sensitive information
without leaving it behind.
AshNote is a zero-knowledge platform for sharing passwords, notes, and files through encrypted links that expire after use. Content is encrypted in your browser before upload, and the server stores ciphertext rather than readable plaintext.
Why AshNote exists
Most sensitive information is still shared the wrong way.
Passwords get pasted into chat. API keys sit in email threads. Internal documents get attached to systems that were never designed for transient disclosure. Once shared, that information often lingers in inboxes, chat history, backups, and searchable archives long after it was needed.
AshNote was built for a simpler model:
Encrypt it, share it, expire it.
Instead of assuming sensitive information should live forever in ordinary communication systems, AshNote is designed to make access temporary and exposure narrow.
How it works
Burn-after-reading secrets
AshNote's core sharing model is simple: create a secret, send the link, and let it be deleted after viewing or expiry, whichever comes first.
Once a secret is viewed or reaches its expiration time, its encrypted data is permanently removed from our service. After that, access is no longer possible.
Zero-knowledge architecture
Secrets are encrypted client-side before they leave the browser. The server receives and stores encrypted payloads and required metadata, not readable plaintext.
Passwords used to protect secrets are handled locally and used to derive cryptographic key material in the browser. The service is designed so secret content remains unintelligible to the server.
Secure file sharing
AshNote supports both notes and files. Files are encrypted in the browser before upload and can be shared using the same expiring-link model as text secrets.
That makes AshNote useful for more than passwords alone. It works for PDF files, internal notes, credentials, screenshots, certificates, and other sensitive materials that should not live indefinitely in standard messaging systems.
Minimal retention by design
AshNote is built around reducing retained exposure.
Small secrets can be handled with minimal persistence, while larger secrets and files can be stored as encrypted objects until they are redeemed or expire. In either case, the system is designed so the service stores ciphertext, not usable content.
Encrypted pools for teams
For teams that need more than one-to-one sharing, AshNote can extend into encrypted file pools.
Pools provide a controlled way for authorized members to upload, access, and manage encrypted content within a bounded sharing environment. Access rules, expiry behavior, and optional additional protections can be layered on top without changing the zero-knowledge architecture.
Why this is different
Sensitive information does not belong in ordinary communication history.
| Chat / Email | Password Manager | AshNote | |
|---|---|---|---|
| Designed for temporary disclosure | No | Limited | Yes |
| Content encrypted before upload | No | Varies | Yes |
| Single-use sharing flow | No | Limited | Yes |
| Hard expiry support | No | Limited | Yes |
| Encrypted file sharing | Limited | Limited | Yes |
AshNote is not trying to replace chat, email, or general file storage. It is built for the narrower and more important case where information should be shared securely and retained as little as possible.
Built for sensitive workflows
If the information should not sit in someone's inbox forever, AshNote is the right kind of tool.
Legal and intellectual property
Share privileged drafts, confidential attachments, or sensitive deal material through expiring encrypted links instead of ordinary email threads.
Healthcare and patient coordination
Reduce plaintext exposure when exchanging records, results, or other sensitive information between intended parties.
Finance and banking
Send wire details, tax documents, or account-related information through a channel designed for temporary access.
Engineering and operations
Share API keys, SSH material, credentials, certificates, and internal notes without leaving them in chat history.
Real estate and closing workflows
Move routing numbers, identification records, and closing documents through expiring encrypted delivery rather than static attachments.
Personal and family use
Share Wi-Fi passwords, insurance cards, logins, and other everyday sensitive information with less long-term exposure.
Security principles
AshNote is built around a small set of architectural rules.
The server should not need to read the secret
Encryption happens before upload, and decryption happens in the recipient's browser.
Sharing should be bounded
Secrets are not meant to remain available indefinitely by default. Access windows should be explicit and limited.
Expiration should be automatic
Unread secrets should not become forgotten liabilities.
Sensitive data should not live in ordinary communication systems
AshNote is designed for the moments when email, chat, and generic storage are the wrong tools.
A better default for sensitive information
Most systems assume retention. AshNote assumes limitation. Instead of creating another permanent copy of something sensitive, AshNote gives you a way to share it through encrypted, expiring access designed to narrow exposure from the start.