FSB hash function (#256)

.github/workflows/workspace.yml

@@ -16,7 +16,7 @@ jobs:
       - uses: actions/checkout@v1
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: 1.41.0 # MSRV
+          toolchain: 1.47.0
           components: clippy
           profile: minimal
           override: true

Cargo.toml

@@ -1,5 +1,6 @@
 [workspace]
 members = [
+    "fsb",
     "blake2",
     "gost94",
     "groestl",

fsb/.gitignore

@@ -0,0 +1,3 @@
+/target
+.idea
+Cargo.lock

fsb/Cargo.toml

@@ -0,0 +1,20 @@
+[package]
+name = "fsb"
+version = "0.1.0"
+description = "FSB hash function"
+authors = ["RustCrypto Developers"]
+license = "MIT OR Apache-2.0"
+readme = "README.md"
+edition = "2018"
+repository = "https://github.com/RustCrypto/hashes"
+keywords = ["crypto", "fsb", "hash", "digest"]
+categories = ["cryptography", "no-std"]
+
+[dependencies]
+whirlpool = { version = "0.9", path = "../whirlpool", default-features = false }
+digest = "0.9"
+block-buffer = { version = "0.9", features = ["block-padding"] }
+opaque-debug = "0.3"
+
+[dev-dependencies]
+hex-literal = "0.2"

fsb/README.md

@@ -0,0 +1,56 @@
+# RustCrypto: FSB
+
+[![crate][crate-image]][crate-link]
+[![Docs][docs-image]][docs-link]
+[![Build Status][build-image]][build-link]
+![Apache2/MIT licensed][license-image]
+![Rust Version][rustc-image]
+[![Project Chat][chat-image]][chat-link]
+
+Pure Rust implementation of the [FSB hash function][1] family.
+
+[Documentation][docs-link]
+
+## Minimum Supported Rust Version
+
+Rust **1.41** or higher.
+
+Minimum supported Rust version can be changed in the future, but it will be
+done with a minor version bump.
+
+## SemVer Policy
+
+- All on-by-default features of this library are covered by SemVer
+- MSRV is considered exempt from SemVer as noted above
+
+## License
+
+Licensed under either of:
+
+* [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0)
+* [MIT license](http://opensource.org/licenses/MIT)
+
+at your option.
+
+### Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in the work by you, as defined in the Apache-2.0 license, shall be
+dual licensed as above, without any additional terms or conditions.
+
+[//]: # (badges)
+
+[crate-image]: https://img.shields.io/crates/v/fsb.svg
+[crate-link]: https://crates.io/crates/fsb
+[docs-image]: https://docs.rs/fsb/badge.svg
+[docs-link]: https://docs.rs/fsb/
+[license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
+[chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg
+[chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/260041-hashes
+[rustc-image]: https://img.shields.io/badge/rustc-1.41+-blue.svg
+[build-image]: https://github.com/RustCrypto/hashes/workflows/fsb/badge.svg?branch=master
+[build-link]: https://github.com/RustCrypto/hashes/actions?query=workflow%3Afsb
+
+[//]: # (general links)
+
+[1]: https://www.paris.inria.fr/secret/CBCrypto/index.php?pg=fsb

fsb/src/lib.rs

@@ -0,0 +1,75 @@
+//! An implementation of the [FSB][1] cryptographic hash algorithms.
+//! The FSB hash function was one of the submissions to SHA-3,
+//! the cryptographic hash algorithm competition organized by the NIST.
+//!
+//! There are 5 standard versions of the FSB hash function:
+//!
+//! * `FSB-160`
+//! * `FSB-224`
+//! * `FSB-256`
+//! * `FSB-384`
+//! * `FSB-512`
+//!
+//! # Examples
+//!
+//! Output size of FSB-256 is fixed, so its functionality is usually
+//! accessed via the `Digest` trait:
+//!
+//! ```
+//! use hex_literal::hex;
+//! use fsb::{Digest, Fsb256};
+//!
+//! // create a FSB-256 object
+//! let mut hasher = Fsb256::new();
+//!
+//! // write input message
+//! hasher.update(b"hello");
+//!
+//! // read hash digest
+//! let result = hasher.finalize();
+//!
+//! assert_eq!(result[..], hex!("
+//!     0f036dc3761aed2cba9de586a85976eedde6fa8f115c0190763decc02f28edbc
+//! ")[..]);
+//! ```
+//! Also see [RustCrypto/hashes][2] readme.
+//!
+//! [1]: https://www.paris.inria.fr/secret/CBCrypto/index.php?pg=fsb
+//! [2]: https://github.com/RustCrypto/hashes
+
+// #![no_std]
+#![doc(
+    html_logo_url = "https://raw.githubusercontent.com/RustCrypto/meta/master/logo.svg",
+    html_favicon_url = "https://raw.githubusercontent.com/RustCrypto/meta/master/logo.svg"
+)]
+#![deny(unsafe_code)]
+#![warn(missing_docs, rust_2018_idioms)]
+
+#![allow(non_snake_case)]
+
+#[cfg(feature = "std")]
+extern crate std;
+
+#[cfg(not(feature = "std"))]
+extern crate alloc;
+use alloc::vec;
+
+#[macro_use]
+mod macros;
+mod pi;
+
+pub use digest::{self, Digest};
+use whirlpool::Whirlpool;
+
+use core::convert::TryInto;
+
+use block_buffer::BlockBuffer;
+use digest::{generic_array::GenericArray};
+use digest::{BlockInput, FixedOutputDirty, Reset, Update};
+use crate::pi::PI;
+
+fsb_impl!(Fsb160, 160, U60, U20, 5 << 18, 80, 640, 653, 1120, "FSB-160 hash function.");
+fsb_impl!(Fsb224, 224, U84, U28, 7 << 18, 112, 896, 907, 1568, "FSB-224 hash function.");
+fsb_impl!(Fsb256, 256, U96, U32, 1 << 21, 128, 1024, 1061, 1792, "FSB-256 hash function.");
+fsb_impl!(Fsb384, 384, U115, U48, 23 << 16, 184, 1472, 1483, 2392, "FSB-384 hash function.");
+fsb_impl!(Fsb512, 512, U155, U64, 31 << 16, 248, 1984, 1987, 3224, "FSB-512 hash function.");