An example of how to securely encrypt data in Node.js using AES-128-GCM mode encryption with a static key. This repo provides an interactive CLI example for how to use the crypto API, with notes about specific details.
Simply run encrypt.js and then run decrypt.js with the values.
> node encrypt.js
Data to Encrypt: {"foo":"bar"}
Encryption Key: b77c4dc922a9b4a7743c88cf72ebf6f5
IV: b6d7ba5a3ba528763552e38bfdea4699
Auth Tag: ba433f009d586da61e71a2d1f5f9b1b7
Encrypted Data: de55a96f044c58826e50ed2699
> node decrypt.js
Key to decrypt data with? b77c4dc922a9b4a7743c88cf72ebf6f5
IV to decrypt data with? b6d7ba5a3ba528763552e38bfdea4699
Auth tag to authenticate data with? ba433f009d586da61e71a2d1f5f9b1b7
Encrypted data? de55a96f044c58826e50ed2699
Decrypted Data: {"foo":"bar"}