Support for encrypting numbers

[harunsmrkovic]

Hey folks,

I recently started using this for a hobby project and noticed that it is possible to encrypt Strings only.

Error: encryption enabled for field amount of unsupported type Float: only String fields can be encrypted.

Is there some inherent plugin/cryptography limitation to encrypting numbers, or was this just never a priority to implement?

If someone could give me a couple of hints around this I'd love to take a stab at implementing support for it.

[franky47]

There is no technical limitation AFAIK, AES-GCM-256 would work fine on the IEEE-754 float64 data format used by JavaScript to store numbers (I did this a while back for another project, source), with proper padding (float64 is 64 bits, so we'd need a constant 64 bits of padding for a 128 bit AES block size).

The main challenge in implementing this (and/or other data types) is how to define the data format that is being encrypted: how to go from a JavaScript variable to an array of bytes to encrypt, and on decryption how to go back from the decrypted array of bytes back into a JavaScript data type.

For SQL-based schemas, I suppose we could use the schema metadata to know what kind of processing to do, but I'm not sure how that would translate in MongoDB / NoSQL schemas.