Encryption itself is not illegal, but it might make harder to comply other legal requirements. I have just heard this many times, and now I read the whole law (curse me). It says on 2258Af part especially that there is no requirement to find evidence of CSAM material all the time. However, if NCMEC especially shares some information about visual depictions and asks to stop redistribution, then provider is required to comply in some cases. For example if they share hashes and these should be stopped. To be able to stop this data, then search is required and complying this with E2E encryption is not possible.
