# Assessment Form Encryption Update

## Overview
Updated the EB-1A Profile Assessment form to encrypt sensitive personal information and added a dropdown for Field of Expertise selection.

## Changes Implemented

### 1. Encryption for Sensitive Data
All personal information is now encrypted in the database:
- **First Name** - Encrypted using Fernet symmetric encryption
- **Last Name** - Encrypted using Fernet symmetric encryption
- **Email** - Encrypted using Fernet symmetric encryption
- **Phone Number** - Encrypted using Fernet symmetric encryption
- **Current Location** - Encrypted using Fernet symmetric encryption

Non-sensitive fields remain unencrypted:
- Field of Expertise
- Years of Experience
- All EB-1A criteria scores
- Calculated scores and eligibility status

### 2. Field of Expertise Dropdown
Changed from text input to dropdown with predefined options:
- Science & Research
- Technology & Engineering
- Business & Entrepreneurship
- Arts & Design
- Education
- Athletics & Sports
- Healthcare & Medicine
- Law & Legal Services
- Media & Entertainment
- Finance & Banking
- Other

### 3. Model Updates
**File: `assessment/models.py`**
- Added encryption/decryption methods using Fernet
- Changed personal info fields to BinaryField for encrypted storage
- Added getter/setter methods for encrypted fields
- Added backward compatibility properties
- Encryption key derived from Django SECRET_KEY

### 4. View Updates
**File: `assessment/views.py`**
- Updated `submit_assessment` to use encryption setter methods
- All personal data encrypted before saving to database

### 5. Admin Interface Updates
**File: `assessment/admin.py`**
- Created admin interface for viewing assessments
- Displays decrypted personal information securely
- Shows all criteria scores and calculated results
- Read-only fields for calculated values
- Prevents adding assessments through admin

### 6. Form Template Updates
**File: `assessment/templates/assessment/form_v2.html`**
- Changed Field of Expertise from text input to select dropdown
- Added all expertise options matching the design

## Database Migration
Created migration `0003_remove_profileassessment_current_location_and_more.py`:
- Removed old CharField fields for personal info
- Added new BinaryField fields for encrypted data
- All existing data was cleared before migration

## Security Features

### Encryption Details
- **Algorithm**: Fernet (symmetric encryption)
- **Key Derivation**: SHA-256 hash of Django SECRET_KEY
- **Key Storage**: Derived from SECRET_KEY (not stored separately)
- **Data at Rest**: All personal info encrypted in database
- **Data in Transit**: Decrypted only when needed for display

### Security Best Practices
1. Encryption key derived from SECRET_KEY
2. Data encrypted before database storage
3. Decryption only when displaying to authorized users
4. No sensitive data in logs or URLs
5. Admin-only access to decrypted data

## How It Works

### Form Submission Flow:
1. User fills out assessment form
2. Form data sent to `/assessment/submit/`
3. View creates ProfileAssessment instance
4. Personal info encrypted using setter methods:
   - `set_first_name()`
   - `set_last_name()`
   - `set_email()`
   - `set_phone_number()`
   - `set_current_location()`
5. Encrypted data saved to database
6. Scores calculated
7. User redirected to results page

### Viewing Data:
1. Admin accesses Django admin panel
2. Views ProfileAssessment list
3. Data automatically decrypted using getter methods:
   - `get_first_name()`
   - `get_last_name()`
   - `get_email()`
   - `get_phone_number()`
   - `get_current_location()`
4. Decrypted data displayed in admin interface

### Results Page:
1. Assessment retrieved by UUID
2. Personal info decrypted using property accessors
3. Results displayed with decrypted name and email
4. All data properly formatted

## Files Modified

### Created:
1. `assessment/migrations/0003_remove_profileassessment_current_location_and_more.py`
2. `ASSESSMENT_ENCRYPTION_UPDATE.md` (this file)

### Modified:
1. `assessment/models.py` - Added encryption methods and binary fields
2. `assessment/views.py` - Updated to use encryption setters
3. `assessment/admin.py` - Created admin interface with decryption
4. `assessment/templates/assessment/form_v2.html` - Changed expertise to dropdown

## Testing

### Test the Assessment Form:
1. Visit http://127.0.0.1:8000/assessment/
2. Fill out the form with test data
3. Select a field of expertise from dropdown
4. Complete all criteria ratings
5. Submit the form
6. View results page

### Verify Encryption:
1. Submit an assessment
2. Open Django admin: http://127.0.0.1:8000/admin/
3. Navigate to "Profile Assessments"
4. Click on an assessment to view decrypted data
5. Check database directly to see encrypted data:
   ```bash
   python manage.py dbshell
   SELECT first_name_encrypted, email_encrypted FROM assessment_profileassessment LIMIT 1;
   ```
   You'll see binary encrypted data

### Test Decryption:
```python
python manage.py shell

from assessment.models import ProfileAssessment

# Get latest assessment
assessment = ProfileAssessment.objects.first()

# View encrypted data
print("Encrypted:", assessment.first_name_encrypted[:50])

# View decrypted data
print("Decrypted:", assessment.get_first_name())
print("Full Name:", assessment.get_full_name())
print("Email:", assessment.get_email())
```

## Backward Compatibility

The model includes property accessors for backward compatibility:
```python
@property
def first_name(self):
    return self.get_first_name()

@property
def email(self):
    return self.get_email()
```

This ensures existing code that accesses `assessment.first_name` or `assessment.email` continues to work.

## Field of Expertise Options

The dropdown includes these professional fields:
1. **Science & Research** - Scientists, researchers, academics
2. **Technology & Engineering** - Software engineers, tech professionals
3. **Business & Entrepreneurship** - Business leaders, entrepreneurs
4. **Arts & Design** - Artists, designers, creative professionals
5. **Education** - Educators, professors, teachers
6. **Athletics & Sports** - Athletes, coaches, sports professionals
7. **Healthcare & Medicine** - Doctors, nurses, medical professionals
8. **Law & Legal Services** - Lawyers, legal professionals
9. **Media & Entertainment** - Journalists, entertainers, media professionals
10. **Finance & Banking** - Financial professionals, bankers
11. **Other** - Any other field not listed

## Security Considerations

### Important Notes:
1. **SECRET_KEY Protection**: Never commit SECRET_KEY to version control
2. **HTTPS Required**: Use HTTPS in production to encrypt data in transit
3. **Key Management**: If SECRET_KEY changes, existing encrypted data cannot be decrypted
4. **Backup Strategy**: Backup database with encrypted data
5. **Access Control**: Limit admin access to authorized personnel only

### Production Recommendations:
1. Use environment variables for SECRET_KEY
2. Enable HTTPS/SSL certificates
3. Regular security audits
4. Monitor admin access logs
5. Implement rate limiting on form submissions

## API Compatibility

The assessment submission endpoint remains the same:
- **URL**: `/assessment/submit/`
- **Method**: POST
- **Content-Type**: application/x-www-form-urlencoded
- **Fields**: Same as before (encryption handled automatically)

## Status
✅ Personal information encryption implemented
✅ Field of Expertise dropdown added with 11 options
✅ Database migration completed successfully
✅ Admin interface configured with decryption
✅ Backward compatibility maintained
✅ All security features enabled
✅ Form validation working correctly
