`decrypt(circshift(c, gk))` does not work with Julia 1.5.0-beta1 about toyfhe.jl HOT 4 CLOSED

By the way, kudos to implementing this package in pure Julia, this has been a great help to kick around a few ideas 👍

from toyfhe.jl.

Whoops, there's a typo in the blog post, obviously, you need to pass the private key to decrypt it. In your MWE:

julia> decrypt(kp.priv, circshift(c, gk))
8-element CKKSEncoding{FixedRational{1099511627776,T} where T} with indices 0:7:
 -18.506166149368628 + 7.60456192425713im
   40.80057950134403 + 8.450631478608264im
 -20.786099653978496 - 5.443269584828531im
  -16.50816701251562 - 0.3042282041572637im
  -19.25951679089231 - 29.497772481885757im
  21.089374991774747 - 16.74889104138221im
  2.5942574658725626 + 9.605495431441932im
   9.309505110847219 - 15.199594797590228im

I'll fix the blog post. Sorry for missing this issue. In the future, please feel free to just ping me directly on issues here.

from toyfhe.jl.

Although now that I actually look at the output, the noise obviously took over here. It's been a while since I thought about FHE noise growth, so I'm not quite sure what the issue is.

from toyfhe.jl.

Hmm works fine with the parameter choices in the test suite: https://github.com/JuliaCrypto/ToyFHE.jl/blob/master/test/ckks_rotate.jl. Not sure whether there's an actual issue here. Unfortunately, if there is, it'd be something subtle about the noise behavior, which is beyond the level of time commitment I have available to look into issues here. That said, hopefully you should be able to use the parameters in the test suite for experimentation if you want.

from toyfhe.jl.