Create RSA Token in nodejs

I'm trying to authenticate to a REST API using encryption.

First I need to call the API to get an encryptionKey and a timestamp. The encryptionKey is in Base 64 format.

Then I need to create a RSAToken using the key and finaly encrypt the password using password + "|" + timestamp.

This is some sample code using python to authenticate to the API

key, timestamp = get_encryption_key() decoded_key = key.decode('base64') rsa_key = RSA.importKey(decoded_key) encrypted = rsa_key.encrypt(password + '|' + str(timestamp), 'x') encrypted_password = encrypted[0] 

and

import base64 from Crypto.PublicKey import RSA r = requests.get(my_url, headers=headers)  myData = r.json() decoded = base64.b64decode(myData['encryptionKey']) key = RSA.importKey(decoded) enc = key.encrypt(password + '|' + str(myData['timeStamp']), 'x') encryptedPassword = enc[0]  session = "/session" my_url = url + session  payload = {"identifier": identifier, "password": encryptedPassword, "encryptedPassword": "True" } 

Any hints to achieve this under Node?

1 Answers

Answers 1

You can use crypto.publicEncrypt to encrypt your password. Notice the padding, you might want to use the right padding that is being used in your Python script.

const crypto = require('crypto'); const constants = require('constants'); const decodedKey = Buffer(encriptionKey, 'base64').toString();  const encryptedPassword = crypto.publicEncrypt({     key: decodedKey,     padding : constants.RSA_PKCS1_OAEP_PADDING } , Buffer(`${password}|${timestamp}`)); 

Check out this node.js test to find out more examples for different padding.

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