It will at minimum be a fight. It won’t just sail through. Also whole governments being against means one of them might challenge the law in to European Court of Justice. Since as nation-states also often have, EU itself has charter of rights part in the fundamental EU treaties. It also has normal limit and share of powers. EU Council and Parliament aren’t all powerfull. ECJ can rule a directive or regulation to be against the core treaties like Charter of Fundamental Rights of the European Union.
Said charter does include in it right to privacy (which explicitly mentions right to privacy in ones communications) and protection of personal data. Obviously none of these are absolute, but it means such wide tampering as making encryption illegal might very well be deemed to wide a breach of right to private communications.
Oh and those who might worry they wouldn’t dare at ECJ… ECJ has twice struck down the data protection agreement negotiated by EU with USA over “USA privacy laws are simply incompatible, no good enough assurances can be given by USA as long as USA has as powerful spying power laws as it has”. Each time against great consternation and frankly humiliating black eye to the Commission at the time.
ECJ doesn’t mess around and doesn’t really care their ruling being mighty politically inconvenient and/or expensive to EU or it’s memberstates. They are also known for their stance that privacy is a corner stone civil right (as stated in the charter and human rights conventions also, their legal basis) and take it very seriously as key part of democracy and protection of democracy. Without free and private communications and expression there can be no free political discussion, without free political discussion there can be no democracy.
More like estimates on this are completely unreliable. As in that 100 years could have as well been 1000 years. It was pretty much “until an unpredictable technological paradigm shift happens”. “100 years in future” is “when we have warp drives and star gates” of estimates. Pretty “when we have advanced to next level of advancement and technology, whenever it happens. 100 years should be good minimum of this not being taken as an actual year number estimate”.
30 years is “we see maybe a potential path to this via hypothetical developments of technology in horizon”. It’s the classical “Fusion is always 30 years away”. Until one time it isn’t, but that 30 year loop can go on indefinitely, if the hypothetical don’t turn to reality. Since you know we thought “maybe that will work, once we put out mind in to it”. Oh it didn’t, on to chasing next path.
I only know of one project, that has 100 year estimate, that is real. That is the Onkalo deep repository of spent fuel in Finland. It has estimate of spending 100 years being filled and is to be sealed in 2120’s and that is an actual date. Since all the tech is known, the sealing process is known, it just happens to take a century to fill the repository bit by bit. Finland is kinda stable country and radiation hazard such long term, that whatever government is to be there in 2120’s, they will most likely seal the repository.
Unless “we invent warp drives” happens before that and some new process of actually efficiently and very safely getting rid of the waste is found in some process. (and no that doesn’t include current recycling methods. Since those aren’t that good to get rid of this large amount and with small enough risk of side harms. Surprise, this was studied by Finland as alternative and it was simply decided “recycling is not good enough, simple enough, efficient enough and safe enough yet. Bury it in bedrock tomb”).