remove frost module (#568)

frost-core/CHANGELOG.md

@@ -4,8 +4,11 @@ Entries are listed in reverse chronological order.
 
 ## Unreleased
 
-## 0.8.0
+## 1.0.0-rc.0
 
+* The `frost-core::frost` module contents were merged into `frost-core`, thus
+  eliminating the `frost` module. You can adapt any calling code with e.g.
+  changing `use frost_core::frost::*` to `use frost-core::*`.
 * Both serde serialization and the default byte-oriented serialization now
   include a version field (a u8) at the beginning which is always 0 for now. The
   ciphersuite ID field was moved from the last field to the second field, after

frost-core/README.md

@@ -2,12 +2,20 @@
 
 Base traits and types in Rust that implement ['Two-Round Threshold Schnorr Signatures with
 FROST'](https://datatracker.ietf.org/doc/draft-irtf-cfrg-frost/) generically for
-`frost-core::Ciphersuite` implementations.
+[`Ciphersuite`] implementations.
+
+For key generation, refer to the [`keys`] module. For round-specific
+types and functions, refer to the [`round1`] and [`round2`] modules. This module
+contains types and functions not directly related to key generation and the
+FROST rounds.
+
 
 ## Status ⚠
 
-The FROST specification is not yet finalized, and this codebase has not yet been audited or
-released. The APIs and types in `frost-core` are subject to change.
+The FROST specification is not yet finalized, though no significant changes are
+expected at this point. This code base has been audited by NCC. The APIs and
+types in `frost-core` are subject to change during the release candidate phase,
+and will follow SemVer guarantees after 1.0.0.
 
 ## Usage
 

frost-core/src/benches.rs

@@ -6,7 +6,8 @@ use std::collections::BTreeMap;
 use criterion::{BenchmarkId, Criterion, Throughput};
 use rand_core::{CryptoRng, RngCore};
 
-use crate::{batch, frost, Ciphersuite, Signature, SigningKey, VerifyingKey};
+use crate as frost;
+use crate::{batch, Ciphersuite, Signature, SigningKey, VerifyingKey};
 
 struct Item<C: Ciphersuite> {
     vk: VerifyingKey<C>,

frost-core/src/error.rs

@@ -2,7 +2,7 @@
 
 use thiserror::Error;
 
-use crate::{frost::Identifier, Ciphersuite};
+use crate::{Ciphersuite, Identifier};
 
 #[derive(Error, Debug, Clone, Copy, Eq, PartialEq)]
 pub struct ParticipantError<C: Ciphersuite>(Identifier<C>);