I'm currently working on a distributed consensus-based system, I currently give the system a private key through a threshold encryption model, and I want to be able to take some data encrypted with the network's public key and re-encrypt it with an arbitrary public key without any member of the network knowing what the data was. I know proxy re-encryption is a good solution if the person who originally encrypted the data creates a re-encryption key, but this needs to be a specific key rather than an arbitrary one making it not suitable for such a use-case.

In the following question that was asked, a comment concerning the ability to simply re-encrypt the data with one's own public key and decrypt it themselves would be of concern. In this model, I believe I have solved that aspect by requiring the network to come to a consensus to re-encrypt anything.

Re-encryption without knowing the secret

I would love to know if something along these lines is even possible or if I'm just out to lunch. Thanks.

I'm currently working on a distributed consensus-based system. I currently give the system a private key through a threshold encryption model, and I want to be able to take some data encrypted with the network's public key and re-encrypt it with an arbitrary public key without any member of the network knowing what the data was. 

I know proxy re-encryption is a good solution if the person who originally encrypted the data creates a re-encryption key, but this needs to be a specific key rather than an arbitrary one making it not suitable for such a use-case.

In the following question that was asked, a comment concerning the ability to simply re-encrypt the data with one's own public key and decrypt it themselves would be of concern. In this model, I believe I have solved that aspect by requiring the network to come to a consensus to re-encrypt anything.

Re-encryption without knowing the secret

I would love to know if something along these lines is even possible or if I'm just out to lunch.