PGP Encrypted File Transfer

Securely upload and share files with end-to-end PGP encryption

Secure Transfer: Files are encrypted client-side in your browser using OpenPGP.js before upload. Only the recipient with the corresponding private key can decrypt the file.
File will be encrypted client-side before upload
Recipient will receive a link to download the encrypted file
File will be encrypted with this public key
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Privacy Guarantee: Private keys you enter or generate are never stored on our servers. All tools are served over HTTPS.

PGP Encrypted File Transfer Explained

How PGP Encrypted File Transfer Works

This service provides end-to-end encrypted file transfer using OpenPGP public key cryptography. Your files are encrypted in your browser before transmission, ensuring maximum security.

Security Features
  • Client-Side Encryption: Files are encrypted in your browser using OpenPGP.js before upload
  • Public Key Cryptography: Files are encrypted with recipient's public key - only their private key can decrypt
  • End-to-End Security: Server never sees unencrypted file content
  • No Long-Term Storage: Files are transferred and removed after download
  • OpenPGP Standard: Uses RFC 4880 compliant OpenPGP encryption
Transfer Process
  1. Select File: Choose the file you want to send securely
  2. Provide Details: Enter recipient's email and PGP public key
  3. Client-Side Encryption: File is encrypted in your browser using OpenPGP.js
  4. Upload: Encrypted file is uploaded to temporary storage
  5. Notification: Recipient receives email with secure download link
  6. Decryption: Recipient uses their private key to decrypt the file
Important: The recipient must have the PGP private key corresponding to the public key used for encryption. Without the correct private key, the file cannot be decrypted.

Author Credentials & Expertise

Created by Anish Nath - Security Engineer specializing in cryptography and secure systems.

  • Experience: 15+ years in cybersecurity, cryptographic implementations, and secure file transfer systems
  • Expertise: OpenPGP/GPG implementations, public key infrastructure, secure file sharing
  • Standards Knowledge: RFC 4880 (OpenPGP), secure communication protocols, encryption best practices
  • Contact: @anish2good on X (Twitter)
Implementation Note: This tool uses OpenPGP.js library for client-side encryption, ensuring your files are encrypted before leaving your device. The encryption happens entirely in your browser.

Best Practices for Secure File Transfer

Key Management

  • Verify Public Keys: Always verify recipient's public key fingerprint through a trusted channel
  • Key Authenticity: Ensure the public key belongs to the intended recipient
  • Key Size: Use at least 2048-bit RSA keys (4096-bit recommended for high security)
  • Key Rotation: Regularly update PGP keys and revoke compromised keys

File Transfer Security

  • HTTPS Connection: Always use HTTPS to prevent man-in-the-middle attacks
  • File Size Limits: Be aware of practical limits for encrypted file transfers
  • Temporary Storage: Files are automatically deleted after a set period
  • Metadata Privacy: File names and metadata are also protected

Authoritative Sources

How It Works

1Upload file: Choose a file to send. Processing is client‑side in your browser.
2Encrypt with public key: Paste the recipient’s PGP public key. The file is encrypted locally (no server storage).
3Share securely: Send the download link to the recipient. Only their private key can decrypt.

FAQs

Do you store any files or keys?
No. Encryption happens in your browser (client‑side) and files are not stored on the server.
Which keys are supported?
OpenPGP public keys. The recipient decrypts using their private key.
How big can files be?
Use reasonable sizes for browser‑based encryption. For very large files, consider chunking before encrypting.
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