Secure File with Encrypt and Decrypt

 


SecureFile

Encrypt any file with a password — the output hides the original file type completely.
Share it safely. The receiver decrypts with the same password to get the original file back.

🔒 Encrypt File
Upload any file, set a password. Download a locked .sfenc file — no hint of the original type inside.
🔓 Decrypt File
Upload the received .sfenc file, enter the password. Get back the original file exactly as it was.

Drop any file to encrypt

PDF, image, video, document, ZIP — any file type
The original file type will be completely hidden

🔒 AES-256-GCM · No server · 100% private
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Encryption Password —
Encrypting…0%
File encrypted
Ready to share safely
AES-256-GCM
How It Works
1
Upload
Sender uploads any file — PDF, photo, video, ZIP, anything at all
2
Encrypt
Set a password. File is AES-256-GCM encrypted. Output is an opaque .sfenc blob
3
Share
Send .sfenc via email, WhatsApp, Drive — safe, completely unreadable without the password
4
Decrypt
Receiver opens Decrypt tab, uploads .sfenc, enters password — original file restored instantly
AES-256-GCM
Authenticated encryption — ciphertext is completely unreadable; built-in tamper detection via GCM auth tag
PBKDF2 · 310k
310,000 rounds of PBKDF2-SHA256 key derivation — makes brute-force attacks extremely slow
Random Salt + IV
16-byte salt + 12-byte IV generated fresh every time — same file + same password = different output each time
.sfenc blob
File type hidden — the output extension, MIME type and internal bytes reveal nothing about the original file
No upload · No server · AES-256-GCM via Web Crypto API · Blogger compatible

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