Add missing derive(Getters) for dkg::{round1, round2} (#741)

* Add missing `derive(Getters)` for `dkg::{round1, round2}`

* update CHANGELOG

---------

Co-authored-by: Conrado Gouvea <conradoplg@gmail.com>

frost-core/CHANGELOG.md

@@ -10,6 +10,7 @@ Entries are listed in reverse chronological order.
   but it's likely to not require any code changes since most ciphersuite
   implementations are probably just empty structs. The bound makes it possible
   to use `frost_core::Error<C>` in `Box<dyn std::error::Error>`.
+* Added getters to `round1::SecretPackage` and `round2::SecretPackage`.
 
 ## 2.0.0-rc.0
 

frost-core/src/keys/dkg.rs

@@ -116,12 +116,13 @@ pub mod round1 {
     /// # Security
     ///
     /// This package MUST NOT be sent to other participants!
-    #[derive(Clone, PartialEq, Eq)]
+    #[derive(Clone, PartialEq, Eq, Getters)]
     pub struct SecretPackage<C: Ciphersuite> {
         /// The identifier of the participant holding the secret.
         pub(crate) identifier: Identifier<C>,
         /// Coefficients of the temporary secret polynomial for the participant.
         /// These are (a_{i0}, ..., a_{i(t−1)})) which define the polynomial f_i(x)
+        #[getter(skip)]
         pub(crate) coefficients: Vec<Scalar<C>>,
         /// The public commitment for the participant (C_i)
         pub(crate) commitment: VerifiableSecretSharingCommitment<C>,
@@ -233,7 +234,7 @@ pub mod round2 {
     /// # Security
     ///
     /// This package MUST NOT be sent to other participants!
-    #[derive(Clone, PartialEq, Eq)]
+    #[derive(Clone, PartialEq, Eq, Getters)]
     pub struct SecretPackage<C: Ciphersuite> {
         /// The identifier of the participant holding the secret.
         pub(crate) identifier: Identifier<C>,