https://github.com/luizpicolo/crypto

This code provides a simple way to encrypt and decrypt text using the Advanced Encryption Standard (AES) algorithm in Cipher Block Chaining (CBC) mode with Node.js's crypto module.
https://github.com/luizpicolo/crypto

Last synced: 6 days ago
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This code provides a simple way to encrypt and decrypt text using the Advanced Encryption Standard (AES) algorithm in Cipher Block Chaining (CBC) mode with Node.js's crypto module.

• Host: GitHub
• URL: https://github.com/luizpicolo/crypto
• Owner: luizpicolo
• Created: 2023-09-15T17:16:28.000Z (about 1 year ago)
• Default Branch: main
• Last Pushed: 2023-09-15T17:26:42.000Z (about 1 year ago)
• Last Synced: 2024-10-22T00:52:38.470Z (24 days ago)
• Language: JavaScript
• Size: 2.93 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Encryption and Decryption using Node.js

This code provides a simple way to encrypt and decrypt text using the Advanced Encryption Standard (AES) algorithm in Cipher Block Chaining (CBC) mode with Node.js's `crypto` module.

## Pre requisites

Before using this code, make sure you have Node.js installed on your system.

## Usage

1. **Import the Module**

   First, import the `encrypt` and `decrypt` functions from the module in your Node.js project.

   ```javascript

   const crypto = require('./crypto');

   ```

2. **Set Encryption Parameters**

   Modify the following constants in your code with your own values:

   

   - `CHAVE`: A 32-character encryption key.

   - `IV`: A 16-character initialization vector.

   - `ALGORITMO`: The encryption algorithm, which is set to "aes-256-cbc" by default. You can change it if needed.

   - `METODO_CRIPTOGRAFIA` and `METODO_DESCRIPTOGRAFIA`: The methods used for encoding the output. They are set to 'hex' by default.

3. **Encrypt Text**

   To encrypt a piece of text, call the `encrypt` function and pass the text as a parameter.

   ```javascript

   const textToEncrypt = 'This is a secret message';

   const encryptedText = crypto.encrypt(textToEncrypt);

   ```

4. **Decrypt Text**

   To decrypt the encrypted text, call the `decrypt` function and pass the encrypted text as a parameter.

   ```javascript

   const decryptedText = crypto.decrypt(encryptedText);

   ```

5. **Complete Example**

   Here's a complete example of how to use the code:

   ```javascript

   const crypto = require('./crypto');

   const CHAVE = 'bf3c199c2470cb477d907b1e0917c17e';

   const IV = '5183666c72eec9e4';

   // Encrypt

   const textToEncrypt = 'This is a secret message';

   const encryptedText = crypto.encrypt(textToEncrypt);

   console.log('Encrypted:', encryptedText);

   // Decrypt

   const decryptedText = crypto.decrypt(encryptedText);

   console.log('Decrypted:', decryptedText);

   ```

## Security Note

Make sure to keep your encryption key (`CHAVE`) and initialization vector (`IV`) secret and secure, as they are critical for the security of your encrypted data.

---

Feel free to replace the placeholders with your actual values and use this README as a guide to integrate encryption and decryption into your Node.js project.