JMeter - JsenEncrypt using Groovy so not to overload js load during each thread call for encryption

Question

JMeter using jsr223 preprocessor wanted to use groovy as language. How to convert present code to groovy so that below code don't cause any performance bottlenecks when executed as part of each thread

The script looks like this:

Answer 1

1. StackOverflow is not a code writing service, if you want someone to do your job for you consider posting it on one of freelance agencies
2. Going forward avoid posting code as image, I doubt anyone will be willing to use OCR tools or re-typing your code to reproduce your issue
3. I strongly doubt that your code works given it relies on this JSEncrypt library

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With regards to your question itself, you can use JDK Securit API in order to encrypt whatever string you want using whatever algorithm you like.

Example Groovy code:

def cipher = javax.crypto.Cipher.getInstance('RSA')
def factory = java.security.KeyFactory.getInstance("RSA")
def publicKeyString='your_public_key_here'
def  encodedKeySpec = new java.security.spec.X509EncodedKeySpec(publicKeyString.decodeBase64())
def publicKey = factory.generatePublic(encodedKeySpec)
cipher.init(javax.crypto.Cipher.ENCRYPT_MODE, publicKey)
cipherText = cipher.doFinal('the string you want to encode'.getBytes())
log.info('Encrypted: ' + cipherText.encodeBase64())

Demo:

More information: Apache Groovy - Why and How You Should Use It