keccak: 2021 edition upgrade; MSRV 1.60 (#70)

`keccak` was previously excluded from the toplevel workspace due to its
MSRV of 1.41 and incompatibilities with packages used by `ascon`.

This bumps the edition, changes the version to `0.2.0-pre` to denote it
contains breaking changes (though this is not intended to be a
`0.2.0-pre` release), and bumps MSRV.

With the MSRV bumped, `keccak` can and has been re-added to the toplevel
workspace.

.github/workflows/keccak.yml

@@ -21,7 +21,7 @@ jobs:
   set-msrv:
     uses: RustCrypto/actions/.github/workflows/set-msrv.yml@master
     with:
-        msrv: 1.41.0
+        msrv: 1.60.0
 
   build:
     needs: set-msrv

Cargo.lock

@@ -9,6 +9,28 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "cpufeatures"
+version = "0.2.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53fe5e26ff1b7aef8bca9c6080520cfb8d9333c7568e1829cef191a9723e5504"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "keccak"
+version = "0.2.0-pre"
+dependencies = [
+ "cpufeatures",
+]
+
+[[package]]
+name = "libc"
+version = "0.2.152"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "13e3bf6590cbc649f4d1a3eefc9d5d6eb746f5200ffb04e5e142700b8faa56e7"
+
 [[package]]
 name = "zeroize"
 version = "1.6.0"

Cargo.toml

@@ -1,6 +1,6 @@
 [workspace]
-exclude = ["keccak"] # TODO(tarcieri): add back to `members` when MSRV >= 1.56
+resolver = "2"
 members = [
     "ascon",
-    #"keccak",
+    "keccak",
 ]

keccak/Cargo.lock

@@ -1,25 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-version = 3
-
-[[package]]
-name = "cpufeatures"
-version = "0.2.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "28d997bd5e24a5928dd43e46dc529867e207907fe0b239c3477d924f7f2ca320"
-dependencies = [
- "libc",
-]
-
-[[package]]
-name = "keccak"
-version = "0.1.5"
-dependencies = [
- "cpufeatures",
-]
-
-[[package]]
-name = "libc"
-version = "0.2.137"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc7fcc620a3bff7cdd7a365be3376c97191aeaccc2a603e600951e452615bf89"

keccak/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "keccak"
-version = "0.1.5"
+version = "0.2.0-pre"
 description = """
 Pure Rust implementation of the Keccak sponge function including the keccak-f
 and keccak-p variants
@@ -12,7 +12,8 @@ repository = "https://github.com/RustCrypto/sponges/tree/master/keccak"
 keywords = ["crypto", "sponge", "keccak", "keccak-f", "keccak-p"]
 categories = ["cryptography", "no-std"]
 readme = "README.md"
-edition = "2018"
+edition = "2021"
+rust-version = "1.60"
 
 [features]
 asm = []       # Use optimized assembly when available (currently only ARMv8)

keccak/README.md

@@ -22,7 +22,7 @@ is built on this crate.
 
 ## Minimum Supported Rust Version
 
-Rust **1.41** or higher by default, or **1.59** with the `asm` feature enabled.
+Rust **1.60** or higher.
 
 Minimum supported Rust version can be changed in the future, but it will be
 done with a minor version bump.
@@ -56,7 +56,7 @@ dual licensed as above, without any additional terms or conditions.
 [build-image]: https://github.com/RustCrypto/sponges/actions/workflows/keccak.yml/badge.svg
 [build-link]: https://github.com/RustCrypto/sponges/actions/workflows/keccak.yml
 [license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
-[rustc-image]: https://img.shields.io/badge/rustc-1.41+-blue.svg
+[rustc-image]: https://img.shields.io/badge/rustc-1.60+-blue.svg
 [chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg
 [chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/369879-sponges
 

keccak/src/lib.rs

@@ -54,7 +54,6 @@
 )]
 
 use core::{
-    convert::TryInto,
     fmt::Debug,
     mem::size_of,
     ops::{BitAnd, BitAndAssign, BitXor, BitXorAssign, Not},