Spring Cloud Config RSA configuration properties appear to be not working

Describe the bug

The encrypt.rsa properties appear to be not working. After creating a cipher with the /encrypt endpoint, change the rsa properties and restart. The decrypt endpoint still decrypts the generated cipher with the changed properties

Sample

application.yml

encrypt:
  rsa:
    strong: true
    salt: deadbeef
    algorithm: DEFAULT
  key: 12345678901234567890

spring:
  cloud:
    config:
      server: 
        git:
          uri: https://github.com/fennekit/configuration

application.yml

encrypt:
  rsa:
    strong: true
    salt: aaaaaa
    algorithm: DEFAULT
  key: 12345678901234567890

spring:
  cloud:
    config:
      server: 
        git:
          uri: https://github.com/fennekit/configuration

It appear the rsa properties always use the default settings. When I change the key the decryption fails. When I change any of the RSA settings it still decodes. Changing the algorithm to something else then DEFAULT or OAEP config-server does not start. Changing salt, strong or algorithm still result in a decryption instead of an error

Comment From: fennekit

I discovered this while I was working on the .Net decoding of the cipher https://github.com/fennekit/spring-cloud-config-decode

Comment From: kvmw

@fennekit Where did you find the above RSA properties ?

Checking the docs here, i can see the following properties needed for asymmetric keys. Property | Description -- | -- encrypt.keyStore.location | Contains a Resource location encrypt.keyStore.password | Holds the password that unlocks the keystore encrypt.keyStore.alias | Identifies which key in the store to use encrypt.keyStore.type | The type of KeyStore to create. Defaults to jks.

Comment From: fennekit

Ah. That makes sense. So for symetric encryption the only parameter is the key.