How to create a public key from a pre-created private key
Please tell me how to generate a public key from a private key file and output the public key information.
My idea is to register the KeyStore private key file and get the information registered in the KeyStore private key file by some rule.
I checked various information on the internet, but I didn't understand it well, so please tell me concretely how it can be realized.
<What you want to do in the end>
(1) Receive a request at Service Rest, generate a public key from the private key, and output the public key information as a Response value.
(2) Receive the information encrypted using the public key in the service rest process different from (1) as a Request and decrypt it using the private key in Pega.
Pegasystems Inc.
NL
@TamakiH8private and public keys come in pairs. In your Keystore rule you would typically store this set of keys. Meaning you would not generate a public key based on a private key, but instead you could simply return the existing pulic key that belongs to that private key.
What you are describing sounds like some manual configuration of message level encryption attempt. You could publish your public key and ask others to use that to encrypt message that they sent to you. You could then decrypt it with the associate private key.
I suggest to discuss your approach with a Pega consultant specialised in security. Also you've marked your post with Pega Platform 8.2.2, so if your client feels strongly about security, I can also recommend an update.