The Post Quantum Encrypted Cloud Storage to Withstand All Threats

Your files are encrypted on your device using client-side, quantum-resistant encryption (ML-KEM + AES-256) so even future quantum computers can't break it. Unlike other cloud storage platforms, your data stays private forever and inaccessible to anyone — including us.

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Open source

Quantum resistant encryption

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Features

Everything You Need, Nothing You Don't

Security, storage, and intelligence — built to protect your privacy at every layer.

Dragbin: Architecture and Implementation of an
End-to-End Post-Quantum Encrypted Cloud Storage
Platform

mohit@dragbin.com

August 28, 2025

Contents

I The Imperative for Post-Quantum Security

1 The End of an Era for Classical Cryptography3

2 The “Harvest Now, Decrypt Later” Threat Vector4

II The Mathematical Foundations of Dragbin's Security

3 The NIST Mandate and the Rise of ML-KEM5

4 An In-Depth Analysis of Module-Lattice Cryptography5

4.1 The Hardness of the MLWE Problem5

4.2 Mathematical Preliminaries: Polynomial Ring R_q6

4.3 The Number-Theoretic Transform (NTT)6

5 Algorithmic Deep Dive into ML-KEM (FIPS 203)7

6 The Security Proof of Key Encapsulation9

6.1 Security Reduction: ML-KEM to MLWE Hardness9

6.2 IND-CCA2 Security: Fujisaki-Okamoto Transform10

III The Dragbin Architecture: Security by Design

7 The Zero-Trust, End-to-End Encrypted Framework10

8 A Step-by-Step Workflow Analysis11

9 Multi-Layered Defense Against Modern Threats12

9.1 Fortifying the Client: Argon2id & Non-Extractable Keys12

9.2 Authenticating Identity: Integrated PKI12

Dragbin: Architecture and Implementation of an
End-to-End Post-Quantum Encrypted Cloud Storage
Platform

mohit@dragbin.com

August 28, 2025

Contents

I The Imperative for Post-Quantum Security

1 The End of an Era for Classical Cryptography3

2 The “Harvest Now, Decrypt Later” Threat Vector4

II The Mathematical Foundations of Dragbin's Security

3 The NIST Mandate and the Rise of ML-KEM5

4 An In-Depth Analysis of Module-Lattice Cryptography5

4.1 The Hardness of the MLWE Problem5

4.2 Mathematical Preliminaries: Polynomial Ring R_q6

4.3 The Number-Theoretic Transform (NTT)6

5 Algorithmic Deep Dive into ML-KEM (FIPS 203)7

6 The Security Proof of Key Encapsulation9

6.1 Security Reduction: ML-KEM to MLWE Hardness9

6.2 IND-CCA2 Security: Fujisaki-Okamoto Transform10

III The Dragbin Architecture: Security by Design

7 The Zero-Trust, End-to-End Encrypted Framework10

8 A Step-by-Step Workflow Analysis11

9 Multi-Layered Defense Against Modern Threats12

9.1 Fortifying the Client: Argon2id & Non-Extractable Keys12

9.2 Authenticating Identity: Integrated PKI12

ML-KEM + AES-256→Read Paper

Post-Quantum Encryption

Protect your files against future threats with encryption designed to outlast quantum breakthroughs. Stop relying on classical cryptography before it becomes your weakest link.

Share · Track · Control

Versatile Cloud Storage

Share everything in one place with built-in password protection and expiring links. Track engagement down to each page with link analytics while using datarooms, geo restrictions, watermarks and view or download limits to control exactly who accesses your files.

Private AI Workspace

Dragbin assistant

Embedded data

Connected Apps

4 apps

Ask Dragbin AI about your latest campaign files

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On-device · Zero telemetry

Local & Private AI

Use powerful AI tools that run locally without exploiting your data or feeding it into corporate systems. Get the intelligence you need without trading away your privacy.

Zero-Knowledge Architecture

Cloud Storage Security Built for the Post-Quantum Era

Dragbin is built on a zero-knowledge, post-quantum security architecture designed to protect your data today and even in the future against quantum computers.

Your files are encrypted on your device before they ever reach the cloud. We can’t see your files.
Quantum-resistant encryption (MLKEM + AES-256) to protect your data now and in the future.

Even if future computers became powerful enough to break today's classical encryption, your data would still be private and unreadable. It's yours alone.

Read Technical Whitepaper

Dragbin: Architecture and Implementation of an
End-to-End Post-Quantum Encrypted Cloud Storage
Platform

mohit@dragbin.com

August 28, 2025

Contents

I The Imperative for Post-Quantum Security

1 The End of an Era for Classical Cryptography3

2 The “Harvest Now, Decrypt Later” Threat Vector4

II The Mathematical Foundations of Dragbin's Security

3 The NIST Mandate and the Rise of ML-KEM5

4 An In-Depth Analysis of Module-Lattice Cryptography5

4.1 The Hardness of the MLWE Problem5

4.2 Mathematical Preliminaries: Polynomial Ring R_q6

4.3 The Number-Theoretic Transform (NTT)6

5 Algorithmic Deep Dive into ML-KEM (FIPS 203)7

6 The Security Proof of Key Encapsulation9

6.1 Security Reduction: ML-KEM to MLWE Hardness9

6.2 IND-CCA2 Security: Fujisaki-Okamoto Transform10

III The Dragbin Architecture: Security by Design

7 The Zero-Trust, End-to-End Encrypted Framework10

8 A Step-by-Step Workflow Analysis11

9 Multi-Layered Defense Against Modern Threats12

9.1 Fortifying the Client: Argon2id & Non-Extractable Keys12

9.2 Authenticating Identity: Integrated PKI12

Dragbin: Architecture and Implementation of an
End-to-End Post-Quantum Encrypted Cloud Storage
Platform

mohit@dragbin.com

August 28, 2025

Contents

I The Imperative for Post-Quantum Security

1 The End of an Era for Classical Cryptography3

2 The “Harvest Now, Decrypt Later” Threat Vector4

II The Mathematical Foundations of Dragbin's Security

3 The NIST Mandate and the Rise of ML-KEM5

4 An In-Depth Analysis of Module-Lattice Cryptography5

4.1 The Hardness of the MLWE Problem5

4.2 Mathematical Preliminaries: Polynomial Ring R_q6

4.3 The Number-Theoretic Transform (NTT)6

5 Algorithmic Deep Dive into ML-KEM (FIPS 203)7

6 The Security Proof of Key Encapsulation9

6.1 Security Reduction: ML-KEM to MLWE Hardness9

6.2 IND-CCA2 Security: Fujisaki-Okamoto Transform10

III The Dragbin Architecture: Security by Design

7 The Zero-Trust, End-to-End Encrypted Framework10

8 A Step-by-Step Workflow Analysis11

9 Multi-Layered Defense Against Modern Threats12

9.1 Fortifying the Client: Argon2id & Non-Extractable Keys12

9.2 Authenticating Identity: Integrated PKI12

Read the Whitepaper

Dragbin Whitepaper v1.0

Full technical overview & encryption model

MLKEM + AES (256)

Tap to open

Encrypted

Your keys, your control

Built for creators, teams, and businesses

Drag Everything you need to store, share, and preserve

A faster, cheaper, zero‑knowledge alternative to legacy storage and sharing.

Zero‑knowledge

Stay in control of shared files

Dragbin's end-to-end encryption also works when sharing files and folders. Optional features like password-protected files and expiring file-sharing links enhance security even further. Best of all, there are no file size limits.

Fastest

Lightning-Fast Downloads & Uploads

Experience the fastest file transfers in the industry with our revolutionary multi-edge server architecture. We cache your recently used encrypted data across global edge servers something no other provider does. Don't believe us? Test it yourself and see the difference.

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Cheaper. Smarter.

Transparent pricing that undercuts legacy cloud storage without cutting corners on security.

Cost per 100 GB (USD)

Illustrative comparison of leading providers

Up to 55% less

$0.89

DragBin

$1.99

Google Drive

$2.39

Dropbox

$1.99

Proton Drive

DragBinLower cost. Zero‑knowledge.

Cross‑platform

All Your Files, One Place

Link your Google Drive, Dropbox, OneDrive, and other accounts. Sync and manage all your files from one central hub.

Drive

Dropbox

OneDrive

AWS S3

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Web

Slack

Notion

DragBin

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Security Comparison

See how DragBin's security features compare to other cloud storage providers.

DragBin offers superior security features compared to traditional cloud storage

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trust signals

Why Teams Choose DragBin

Security you can verify, performance you can feel — built on principles, not promises.

0 bytes readable

Zero-Knowledge Architecture

Your files are encrypted client-side before they ever leave your device. DragBin servers never see plaintext data — not even we can read your uploads.

100% auditable