Why Reversible Encryption?
Sometimes you need to protect data temporarily, not destroy it forever
Temporary Protection
Share documents with external parties during a project, then restore original data when the project ends.
Audit Compliance
Anonymize production data for testing but maintain ability to trace back to originals for audit purposes.
Legal Discovery
Protect sensitive information during legal proceedings while preserving the ability to restore if required by court order.
Safe AI Workflows
Send anonymized prompts to AI assistants, then restore context when reviewing outputs internally.
How It Works
1. Encrypt
During anonymization, select the Encrypt method. Each detected PII value is encrypted using AES-256-GCM with your personal encryption key.
2. Share Safely
The anonymized text contains encrypted tokens like <encrypted:xyz123>. Share this text freely — without the key, the original data is unrecoverable.
3. Restore Anytime
Open the Deanonymizer tab, paste the encrypted text, enter your key, and click Decrypt. Original values are instantly restored.
המפתחות שלך, השליטה שלך
אתה יוצר ומגן על מפתחות ההצפנה שלך. אנחנו לעולם לא מאחסנים אותם.
אתה יוצר את המפתח
בחר סיסמה חזקה של 16, 24 או 32 תווים. זה הופך למפתח ההצפנה AES שלך. אנחנו לא מייצרים מפתחות עבורך.
המפתח לעולם לא מאוחסן
המפתח שלך מועבר בצורה מאובטחת דרך HTTPS להצפנה, ואז נמחק מיד. אנחנו לעולם לא מאחסנים את המפתח שלך בשרתים שלנו.
אותו מפתח נדרש לפענוח
הפענוח דורש את המפתח המדויק שנעשה בו שימוש במהלך ההצפנה. אפילו תו אחד שגוי אומר שהפענוח נכשל.
אין שחזור אם אבד
אנחנו לא יכולים לשחזר את הנתונים שלך אם אתה מאבד את המפתח שלך. אחסן אותו בצורה מאובטחת במנהל סיסמאות. זה בכוונה.
Encrypt vs Other Methods
Only Encrypt allows you to recover original data
| Method | Reversible | Readable | Linkable | Best For |
|---|---|---|---|---|
| encrypt | Temporary workflows, audits, legal | |||
| replace | Testing, demos, training data | |||
| redact | Legal documents, public records | |||
| hash | Research, analytics, pseudonymization | |||
| mask | Support, UI display |
Note: Replace, Redact, Hash, and Mask are permanent transformations. Once applied, the original data cannot be recovered.
Real-World Use Cases
AI Assistant Workflows
Anonymize sensitive customer data before sending to ChatGPT, Claude, or other AI assistants. Use the Chrome Extension or MCP Server to encrypt on-the-fly, then restore context when reviewing AI outputs internally.
"Customer John Smith (john@company.com) reported..." → "Customer <encrypted:xyz> (<encrypted:abc>) reported..." → Original restored after AI processing
Vendor Data Sharing
Share project documents with external consultants or vendors without exposing real names, emails, or other PII. When the engagement ends, restore originals for internal records.
Share anonymized contracts during due diligence, restore originals for final signing
Production-to-Test Data
Copy production databases to test environments with encrypted PII. Developers work with realistic data structures while actual values remain protected. Restore for debugging specific issues.
Test with encrypted user data, decrypt specific records when investigating bugs
Legal Hold & Discovery
During litigation, anonymize documents shared with opposing counsel. If court orders restoration, you retain the ability to decrypt without having destroyed evidence.
Protect witness identities during discovery, restore if subpoenaed
Technical Specifications
Military-grade encryption for enterprise trust
AES-256-GCM
Advanced Encryption Standard with 256-bit keys and Galois/Counter Mode for authenticated encryption. Used by banks, governments, and military worldwide.
Key Requirements
16, 24, or 32 character keys (128, 192, or 256 bits). Longer keys provide stronger security.
Token Format
Encrypted values are stored as <encrypted:base64data> tokens, allowing easy identification and decryption.
Zero Key Storage
Your encryption key is never stored on our servers. If you lose your key, encrypted data cannot be recovered — by design.
Available Everywhere
Use reversible encryption across all cloak.business platforms
Web Application
Full encrypt/decrypt workflow in the Anonymizer and Deanonymizer tabs
REST API
POST /api/presidio/anonymize with encrypt operator, POST /api/presidio/deanonymize to restore
MCP Server
text_anonymize and text_detokenize tools for Claude Desktop and compatible AI assistants
Desktop App
Document processing with encrypt method, key management synced with your vault
Chrome Extension
One-click encryption for ChatGPT, Claude.ai, and Gemini conversations
Security Guarantees
- מפתח ההצפנה שלך מועבר בצורה מאובטחת דרך HTTPS ולעולם לא מאוחסן בשרתים שלנו
- Encrypted tokens are computationally infeasible to decrypt without the correct key
- We never store your encryption key — if you lose it, we cannot help you recover data
- All processing happens on ISO 27001-certified servers in Nuremberg, Germany
- AES-256-GCM provides both confidentiality and integrity verification
Frequently Asked Questions
What happens if I lose my encryption key?
Encrypted data becomes permanently unrecoverable. We do not store your key and have no way to decrypt your data. Always store your encryption key in a secure password manager.
Can I use different keys for different documents?
Yes. Each anonymization operation uses the key you provide. You can use different keys for different projects, but you must track which key was used for which document.
What are the key requirements?
Keys must be exactly 16, 24, or 32 characters (128, 192, or 256 bits). Longer keys provide stronger encryption. We recommend 32-character keys for maximum security.
Can I decrypt only some values?
Currently, decryption processes all encrypted tokens in the text. You cannot selectively decrypt individual values while leaving others encrypted.
Can I decrypt via API?
Yes. Use POST /api/presidio/deanonymize with the encrypted text and your key. The API returns the fully restored original text.
תכונות קשורות
גלה יכולות נוספות שעובדות בצורה חלקה עם הצפנה הפיכה
כל שיטות האנונימיזציה
השווה את כל 5 שיטות האנונימיזציה: החלפה, מחיקה, גיבוב, הצפנה ומיסוך. בחר את המתאימה לשימוש שלך.
אבטחת Zero-Knowledge
הסיסמה שלך לעולם לא עוזבת את המכשיר שלך. אותם עקרונות אבטחה שמגנים על מפתחות ההצפנה שלך.
אינטגרציית שרת MCP
השתמש בהצפנה הפיכה ישירות ב-Claude Desktop, Cursor ו-VS Code עם שרת ה-MCP שלנו.