Flexible plaintext mod

[haochenuw]

Making plaintext modulus customizable.

[Groxx]

This seems to have broken cargo bench, though I'm not familiar enough with Rust to immediately grasp why:

~/rust/Cupcake main
❯ git rev-parse HEAD
c8ee75a9127fa907dc6d0d8186c28b3a0d6a4d00

~/rust/Cupcake main
❯ cargo bench
   Compiling Cupcake v0.1.1 (/home/user/rust/Cupcake)
error[E0282]: type annotations needed
   --> benches/example.rs:185:20
    |
185 |         let _ = fv.decrypt(&ct, &sk);
    |             -      ^^^^^^^ cannot infer type for type parameter `PT` declared on the trait `SKEncryption`
    |             |
    |             consider giving this pattern a type

error: aborting due to previous error

For more information about this error, try `rustc --explain E0282`.
error: could not compile `Cupcake`

To learn more, run the command again with --verbose.
warning: build failed, waiting for other jobs to finish...
error: build failed

While if I try the previous commit:

~/rust/Cupcake main
❯ git checkout HEAD^
HEAD is now at 381b99e Adding serialization capability.  (#3)

~/rust/Cupcake @381b99ee
❯ git rev-parse HEAD
381b99ee09fdb7192664224d85d32ac494bf521a

~/rust/Cupcake @381b99ee
❯ cargo bench
   Compiling Cupcake v0.1.1 (/home/user/rust/Cupcake)
    Finished bench [optimized] target(s) in 1.36s
     Running unittests (target/release/deps/cupcake-ea89701d0927524e)

running 28 tests
test fv_scalar_tests::test_add_plain_scalar ... ignored
test fv_scalar_tests::test_add_scalar ... ignored
... (all tests pass)

And this is all on the latest stable rust:

~/rust/Cupcake @381b99ee
❯ rustup show
Default host: x86_64-unknown-linux-gnu
rustup home:  /home/user/.rustup

installed toolchains
--------------------

stable-x86_64-unknown-linux-gnu (default)
nightly-2020-06-22-x86_64-unknown-linux-gnu

active toolchain
----------------

stable-x86_64-unknown-linux-gnu (default)
rustc 1.53.0 (53cb7b09b 2021-06-17)