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Field-Level Data Encryptor

Encrypt specific fields in CSV data using various encryption methods to protect sensitive information

Specify which CSV columns to encrypt. If empty, all fields will be encrypted by default.

Only required for AES encryption method. Use a strong, secure key.

Number of positions to shift for Caesar cipher (1-25)

Keep CSV headers and maintain original data structure

Skip detailed analysis and only output the encrypted data

Key Facts

Category
Security
Input Types
textarea, select, text, number, checkbox
Output Type
text
Sample Coverage
4
API Ready
Yes

Overview

The Field-Level Data Encryptor is a secure utility designed to protect sensitive information within CSV files by applying various encryption and obfuscation methods to specific data columns.

When to Use

  • •When you need to mask sensitive personal information like emails or SSNs before sharing CSV files.
  • •When preparing datasets for testing or development that require anonymized or encrypted values.
  • •When you need to comply with data privacy standards by securing specific fields while maintaining the overall file structure.

How It Works

  • •Paste your CSV data into the input area and select your preferred encryption method, such as AES, Base64, or SHA-256.
  • •Specify the exact column names you wish to encrypt, or leave the field blank to encrypt the entire dataset.
  • •Configure additional settings like Caesar shift amounts or AES keys if required by your chosen method.
  • •Choose your desired output format (CSV or JSON) and click to generate the protected data.

Use Cases

Anonymizing customer contact lists for marketing analysis.
Securing employee payroll data before exporting to external reporting tools.
Masking PII (Personally Identifiable Information) in database dumps for developer access.

Examples

1. Anonymizing Customer Emails

Data Analyst
Background
A marketing team needs to analyze customer purchase behavior but cannot view actual email addresses due to privacy policies.
Problem
The email column contains plain-text addresses that must be obfuscated before the file is shared with the analytics team.
How to Use
Upload the CSV, select 'SHA-256 Hash' as the method, and enter 'Email' in the fields to encrypt.
Example Config
encryptionMethod: hash, selectedFields: Email, preserveStructure: true
Outcome
The email column is replaced with unique, irreversible hashes, allowing for trend analysis without exposing customer identities.

2. Securing Sensitive Financial Records

HR Manager
Background
HR needs to send a salary report to an external auditor but must protect SSN and Salary information.
Problem
Sensitive financial data is currently in plain text within a shared CSV file.
How to Use
Select 'AES Encryption', provide a strong secret key, and specify 'SSN,Salary' as the fields to encrypt.
Example Config
encryptionMethod: aes, selectedFields: SSN,Salary, encryptionKey: [YourSecureKey]
Outcome
The SSN and Salary columns are encrypted using AES, ensuring only the auditor with the key can decrypt the values.

Try with Samples

csv, base64
Regex Replace Samples
Collection of common and useful regex replacement patterns for text transformation and data cleaning
preferred input family csv
csv
CSV Samples
Sample CSV files with various data types, sizes, and complexity levels
preferred input family csv
csv
Duplicate Line Samples
Sample files with various types of duplicate lines for testing duplicate removal tools
preferred input family csv
csv
Python Samples
Essential Python code examples and Hello World demonstrations
preferred input family csv
csv

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FAQ

Can I encrypt only specific columns?

Yes, you can specify individual column names in the 'Fields to Encrypt' box to target only the sensitive data.

Is AES encryption reversible?

AES encryption is reversible if you have the correct encryption key, whereas SHA-256 hashing is a one-way process.

What happens if I don't provide an encryption key for AES?

An encryption key is mandatory for the AES method to ensure your data is properly secured.

Can I keep the original CSV headers?

Yes, by enabling the 'Preserve Original Structure' option, the tool maintains your headers and file layout.

Is my data stored on your servers?

No, all encryption processes are performed locally in your browser to ensure your sensitive data remains private.

API Documentation

Request Endpoint

POST /en/api/tools/field-encryptor

Request Parameters

Parameter Name Type Required Description
csvData textarea Yes -
encryptionMethod select Yes -
selectedFields text No Specify which CSV columns to encrypt. If empty, all fields will be encrypted by default.
encryptionKey text No Only required for AES encryption method. Use a strong, secure key.
caesarShift number No Number of positions to shift for Caesar cipher (1-25)
preserveStructure checkbox No Keep CSV headers and maintain original data structure
exportFormat select Yes -
encryptedOnly checkbox No Skip detailed analysis and only output the encrypted data

Response Format

{
  "result": "Processed text content",
  "error": "Error message (optional)",
  "message": "Notification message (optional)",
  "metadata": {
    "key": "value"
  }
}
Text: Text

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-field-encryptor": {
      "name": "field-encryptor",
      "description": "Encrypt specific fields in CSV data using various encryption methods to protect sensitive information",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=field-encryptor",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

If you encounter any issues, please contact us at [email protected]