Скачать или смотреть How to Implement AES Encryption in Node.js Similar to C# Function

Discover how to perform AES encryption in Node.js that mirrors the functionality of a C# method. Learn about the differences in implementation and get example code for effective encryption.
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Implementing AES Encryption in Node.js Similar to C#

When working with sensitive data, encrypting information is a crucial practice for ensuring data security. This guide addresses a common problem faced by developers needing to implement AES (Advanced Encryption Standard) encryption in Node.js that mirrors a provided C# function.

In the case presented, the user was trying to adapt a C# encryption function that generates a token based on a specific input text and a key. The original C# function utilized AES encryption in ECB mode, but when implementing similar functionality in Node.js using crypto-js and the native crypto module, the results differed. This post will clarify how to effectively achieve the same results in Node.js.

Understanding the Problem

The following C# function uses AES encryption in ECB mode:

[[See Video to Reveal this Text or Code Snippet]]

Problem Encountered

While attempting to replicate the functionality in Node.js, the original attempts provided the following pieces of code:

First Method using crypto-js:

[[See Video to Reveal this Text or Code Snippet]]

Second Method using crypto module:

[[See Video to Reveal this Text or Code Snippet]]

Both methods failed to replicate the original C# function's output. This pointed to a difference in the AES mode and possibly the key size.

Implementing AES Encryption in Node.js

To successfully perform AES encryption in Node.js that aligns with the aforementioned C# function, we will utilize the native crypto module, ensuring proper settings that reflect the C# function's configuration—specifically leveraging AES-128-ECB mode.

Step-by-Step Solution

Load the Crypto Module
Start by loading the Node.js crypto module.

[[See Video to Reveal this Text or Code Snippet]]

Define the Encryption Function
Create an encrypt function that utilizes AES-128-ECB. Note that the key must be 16 bytes.

[[See Video to Reveal this Text or Code Snippet]]

Define the Decryption Function (Optional)
If you also need to decrypt, you can set up a corresponding function.

[[See Video to Reveal this Text or Code Snippet]]

Using the Functions
Define a key and call the encrypt function. Ensure your key has the appropriate length.

[[See Video to Reveal this Text or Code Snippet]]

Example Output

When you run the above code, you will get consistent results between Node.js and C# :

Encrypted string: f7sSBDV0N6MOpRJLpSJL0w== (consistent across both platforms)

Decrypted string: Returns to original: hello world

Conclusion

By closely mirroring the configuration and logic used in the C# AES encryption method, you can achieve consistent results with Node.js. Remember to avoid using insecure keys in production environments and to always implement strong security practices in your applications.



Feel free to reach out if you need further assistance or have questions related to encryption in Node.js or C# !