Encryption-Decryption Library for Object , Array of Object,Key and String

encryption-decryption is a Node.js library that provides easy-to-use functions for encrypting and decrypting specific keys within objects, arrays, and strings. The library supports both CommonJS and ES6 module formats.

Features

• Encrypt and decrypt specific keys within an object or array.
• Supports string encryption and decryption.
• Simple API with easy integration into existing Node.js projects.

Installation

To install the package, use npm:

npm install encryption-decryption-easy

Usage

You can use this library with both ES6 modules and CommonJS.

ES6 Module Example

import {EncryptionLibrary} from 'encryption-decryption-easy';

// ENV keys = SECRET_KEY, IV, SALT

const instance = new EncryptionLibrary()

// Encrypt object keys
const inputObject = { name: 'John Doe', ssn: '123-45-6789' };
const encryptedObject = instance.encryptObjectKeys(inputObject, ['ssn']);
console.log('Encrypted Object:', encryptedObject);

// Decrypt object keys
const decryptedObject = instance.decryptObjectKeys(encryptedObject, ['ssn']);
console.log('Decrypted Object:', decryptedObject);


// Encrypt Array of object keys
const inputArrayOfObject = [{ name: 'John Doe', ssn: '123-45-6789' }];
const encryptedArrayOfObject = instance.encryptObjectKeys(inputArrayOfObject, ['ssn']);
console.log('Encrypted Object:', encryptedArrayOfObject);

// Decrypt Array of object keys
const decryptedArrayOfObject = instance.decryptObjectKeys(encryptedArrayOfObject, ['ssn']);
console.log('Decrypted Object:', decryptedArrayOfObject);

// Encrypt String

const inputString = "myPassword"
const encryptedPassword = instance.encryptObjectKeys(inputString, ['inputString'])

console.log('Encrypted string:', encryptedPassword);


const decryptedPassword = instance.encryptObjectKeys(encryptedPassword, ['encryptedPassword'])

console.log('Decrypted string:', decryptedPassword);

CommonJS Module Example

import {EncryptionLibrary}  = require('encryption-decryption-easy');

// ENV keys = SECRET_KEY,  IV, SALT

const instance = new EncryptionLibrary()

// Encrypt object keys
const inputObject = { name: 'John Doe', ssn: '123-45-6789' };
const encryptedObject = instance.encryptObjectKeys(inputObject, ['ssn']);
console.log('Encrypted Object:', encryptedObject);

// Decrypt object keys
const decryptedObject = instance.decryptObjectKeys(encryptedObject, ['ssn']);
console.log('Decrypted Object:', decryptedObject);


// Encrypt Array of object keys
const inputArrayOfObject = [{ name: 'John Doe', ssn: '123-45-6789' }];
const encryptedArrayOfObject = instance.encryptObjectKeys(inputArrayOfObject, ['ssn']);
console.log('Encrypted Object:', encryptedArrayOfObject);

// Decrypt Array of object keys
const decryptedArrayOfObject = instance.decryptObjectKeys(encryptedArrayOfObject, ['ssn']);
console.log('Decrypted Object:', decryptedArrayOfObject);

// Encrypt String

const inputString = "myPassword"
const encryptedPassword = instance.encryptObjectKeys(inputString, ['inputString'])

console.log('Encrypted string:', encryptedPassword);


const decryptedPassword = instance.encryptObjectKeys(encryptedPassword, ['encryptedPassword'])

console.log('Decrypted string:', decryptedPassword);

CLASS Method

encryptObjectKeys(input, keys)

Encrypts the specified keys in the given input object, array, or string.

• input: The object, array, or string to be encrypted.
• keys: An array of keys to encrypt within the object or array.

Example:

const encryptedObject = instance.encryptObjectKeys({ ssn: '123-45-6789' }, ['ssn']);

decryptObjectKeys(input, keys)

Decrypts the specified keys in the given input object, array, or string.

• input: The object, array, or string to be decrypted.
• keys: An array of keys to decrypt within the object or array.

Example:

const decryptedObject = instance.decryptObjectKeys(encryptedObject, ['ssn']);

Environment Variables

For enhanced security, you can configure the following environment variables:

| Variable | Description | Default Value | |-----------------|-----------------------------------------------------|--------------------------------------------------| | SECRET_KEY | The secret key used for encryption and decryption. | 'some random string of 32 characters' | |-----------------|------------------------------------------------------|--------------------|
| SALT | A salt string added for additional security during encryption. | 'some random string of 64 characters' |

Example

To set these environment variables in your .env file:

SECRET_KEY=your-32-character-secret-key
SALT=your-64-character-salt-string

### Security Considerations

- Ensure that your **secretKey** and **itetrations** values remain consistent between encryption and decryption.
- Store secret keys and itetrations  securely using environment variables or secure key management systems.
- Strong encryption algorithms (e.g., AES-256-CBC) are recommended for sensitive data.

## License

This library is licensed under the MIT License. See the [LICENSE](LICENSE) file for more details.