From d0d9683df8398696147e7ee1fcffb2e4e957008c Mon Sep 17 00:00:00 2001 From: Daniel Mueller Date: Sat, 4 Apr 2020 14:39:19 -0700 Subject: Remove vendored dependencies While it appears that by now we actually can get successful builds without Cargo insisting on Internet access by virtue of using the --frozen flag, maintaining vendored dependencies is somewhat of a pain point. This state will also get worse with upcoming changes that replace argparse in favor of structopt and pull in a slew of new dependencies by doing so. Then there is also the repository structure aspect, which is non-standard due to the way we vendor dependencies and a potential source of confusion. In order to fix these problems, this change removes all the vendored dependencies we have. Delete subrepo argparse/:argparse Delete subrepo base32/:base32 Delete subrepo cc/:cc Delete subrepo cfg-if/:cfg-if Delete subrepo getrandom/:getrandom Delete subrepo lazy-static/:lazy-static Delete subrepo libc/:libc Delete subrepo nitrokey-sys/:nitrokey-sys Delete subrepo nitrokey/:nitrokey Delete subrepo rand/:rand --- rand/rand_chacha/CHANGELOG.md | 18 -- rand/rand_chacha/COPYRIGHT | 12 -- rand/rand_chacha/Cargo.toml | 28 --- rand/rand_chacha/LICENSE-APACHE | 201 ------------------ rand/rand_chacha/LICENSE-MIT | 26 --- rand/rand_chacha/README.md | 49 ----- rand/rand_chacha/src/chacha.rs | 452 ---------------------------------------- rand/rand_chacha/src/lib.rs | 30 --- 8 files changed, 816 deletions(-) delete mode 100644 rand/rand_chacha/CHANGELOG.md delete mode 100644 rand/rand_chacha/COPYRIGHT delete mode 100644 rand/rand_chacha/Cargo.toml delete mode 100644 rand/rand_chacha/LICENSE-APACHE delete mode 100644 rand/rand_chacha/LICENSE-MIT delete mode 100644 rand/rand_chacha/README.md delete mode 100644 rand/rand_chacha/src/chacha.rs delete mode 100644 rand/rand_chacha/src/lib.rs (limited to 'rand/rand_chacha') diff --git a/rand/rand_chacha/CHANGELOG.md b/rand/rand_chacha/CHANGELOG.md deleted file mode 100644 index d242f97..0000000 --- a/rand/rand_chacha/CHANGELOG.md +++ /dev/null @@ -1,18 +0,0 @@ -# Changelog -All notable changes to this project will be documented in this file. - -The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) -and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). - -## [0.2.1] - 2019-07-22 -- Force enable the `simd` feature of `c2-chacha` (#845) - -## [0.2.0] - 2019-06-06 -- Rewrite based on the much faster `c2-chacha` crate (#789) - -## [0.1.1] - 2019-01-04 -- Disable `i128` and `u128` if the `target_os` is `emscripten` (#671: work-around Emscripten limitation) -- Update readme and doc links - -## [0.1.0] - 2018-10-17 -- Pulled out of the Rand crate diff --git a/rand/rand_chacha/COPYRIGHT b/rand/rand_chacha/COPYRIGHT deleted file mode 100644 index 468d907..0000000 --- a/rand/rand_chacha/COPYRIGHT +++ /dev/null @@ -1,12 +0,0 @@ -Copyrights in the Rand project are retained by their contributors. No -copyright assignment is required to contribute to the Rand project. - -For full authorship information, see the version control history. - -Except as otherwise noted (below and/or in individual files), Rand is -licensed under the Apache License, Version 2.0 or - or the MIT license - or , at your option. - -The Rand project includes code from the Rust project -published under these same licenses. diff --git a/rand/rand_chacha/Cargo.toml b/rand/rand_chacha/Cargo.toml deleted file mode 100644 index 6a47b86..0000000 --- a/rand/rand_chacha/Cargo.toml +++ /dev/null @@ -1,28 +0,0 @@ -[package] -name = "rand_chacha" -version = "0.2.1" -authors = ["The Rand Project Developers", "The Rust Project Developers", "The CryptoCorrosion Contributors"] -license = "MIT OR Apache-2.0" -readme = "README.md" -repository = "https://github.com/rust-random/rand" -documentation = "https://rust-random.github.io/rand/rand_chacha/" -homepage = "https://crates.io/crates/rand_chacha" -description = """ -ChaCha random number generator -""" -keywords = ["random", "rng", "chacha"] -categories = ["algorithms", "no-std"] -edition = "2018" - -[badges] -travis-ci = { repository = "rust-random/rand" } -appveyor = { repository = "rust-random/rand" } - -[dependencies] -rand_core = { path = "../rand_core", version = "0.5" } -c2-chacha = { version = "0.2.2", default-features = false, features = ["simd"] } - -[features] -default = ["std", "simd"] -std = ["c2-chacha/std"] -simd = [] # deprecated diff --git a/rand/rand_chacha/LICENSE-APACHE b/rand/rand_chacha/LICENSE-APACHE deleted file mode 100644 index 17d7468..0000000 --- a/rand/rand_chacha/LICENSE-APACHE +++ /dev/null @@ -1,201 +0,0 @@ - Apache License - Version 2.0, January 2004 - https://www.apache.org/licenses/ - -TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION - -1. Definitions. - - "License" shall mean the terms and conditions for use, reproduction, - and distribution as defined by Sections 1 through 9 of this document. - - "Licensor" shall mean the copyright owner or entity authorized by - the copyright owner that is granting the License. - - "Legal Entity" shall mean the union of the acting entity and all - other entities that control, are controlled by, or are under common - control with that entity. For the purposes of this definition, - "control" means (i) the power, direct or indirect, to cause the - direction or management of such entity, whether by contract or - otherwise, or (ii) ownership of fifty percent (50%) or more of the - outstanding shares, or (iii) beneficial ownership of such entity. - - "You" (or "Your") shall mean an individual or Legal Entity - exercising permissions granted by this License. - - "Source" form shall mean the preferred form for making modifications, - including but not limited to software source code, documentation - source, and configuration files. - - "Object" form shall mean any form resulting from mechanical - transformation or translation of a Source form, including but - not limited to compiled object code, generated documentation, - and conversions to other media types. - - "Work" shall mean the work of authorship, whether in Source or - Object form, made available under the License, as indicated by a - copyright notice that is included in or attached to the work - (an example is provided in the Appendix below). - - "Derivative Works" shall mean any work, whether in Source or Object - form, that is based on (or derived from) the Work and for which the - editorial revisions, annotations, elaborations, or other modifications - represent, as a whole, an original work of authorship. For the purposes - of this License, Derivative Works shall not include works that remain - separable from, or merely link (or bind by name) to the interfaces of, - the Work and Derivative Works thereof. - - "Contribution" shall mean any work of authorship, including - the original version of the Work and any modifications or additions - to that Work or Derivative Works thereof, that is intentionally - submitted to Licensor for inclusion in the Work by the copyright owner - or by an individual or Legal Entity authorized to submit on behalf of - the copyright owner. For the purposes of this definition, "submitted" - means any form of electronic, verbal, or written communication sent - to the Licensor or its representatives, including but not limited to - communication on electronic mailing lists, source code control systems, - and issue tracking systems that are managed by, or on behalf of, the - Licensor for the purpose of discussing and improving the Work, but - excluding communication that is conspicuously marked or otherwise - designated in writing by the copyright owner as "Not a Contribution." - - "Contributor" shall mean Licensor and any individual or Legal Entity - on behalf of whom a Contribution has been received by Licensor and - subsequently incorporated within the Work. - -2. Grant of Copyright License. Subject to the terms and conditions of - this License, each Contributor hereby grants to You a perpetual, - worldwide, non-exclusive, no-charge, royalty-free, irrevocable - copyright license to reproduce, prepare Derivative Works of, - publicly display, publicly perform, sublicense, and distribute the - Work and such Derivative Works in Source or Object form. - -3. Grant of Patent License. Subject to the terms and conditions of - this License, each Contributor hereby grants to You a perpetual, - worldwide, non-exclusive, no-charge, royalty-free, irrevocable - (except as stated in this section) patent license to make, have made, - use, offer to sell, sell, import, and otherwise transfer the Work, - where such license applies only to those patent claims licensable - by such Contributor that are necessarily infringed by their - Contribution(s) alone or by combination of their Contribution(s) - with the Work to which such Contribution(s) was submitted. If You - institute patent litigation against any entity (including a - cross-claim or counterclaim in a lawsuit) alleging that the Work - or a Contribution incorporated within the Work constitutes direct - or contributory patent infringement, then any patent licenses - granted to You under this License for that Work shall terminate - as of the date such litigation is filed. - -4. Redistribution. You may reproduce and distribute copies of the - Work or Derivative Works thereof in any medium, with or without - modifications, and in Source or Object form, provided that You - meet the following conditions: - - (a) You must give any other recipients of the Work or - Derivative Works a copy of this License; and - - (b) You must cause any modified files to carry prominent notices - stating that You changed the files; and - - (c) You must retain, in the Source form of any Derivative Works - that You distribute, all copyright, patent, trademark, and - attribution notices from the Source form of the Work, - excluding those notices that do not pertain to any part of - the Derivative Works; and - - (d) If the Work includes a "NOTICE" text file as part of its - distribution, then any Derivative Works that You distribute must - include a readable copy of the attribution notices contained - within such NOTICE file, excluding those notices that do not - pertain to any part of the Derivative Works, in at least one - of the following places: within a NOTICE text file distributed - as part of the Derivative Works; within the Source form or - documentation, if provided along with the Derivative Works; or, - within a display generated by the Derivative Works, if and - wherever such third-party notices normally appear. The contents - of the NOTICE file are for informational purposes only and - do not modify the License. You may add Your own attribution - notices within Derivative Works that You distribute, alongside - or as an addendum to the NOTICE text from the Work, provided - that such additional attribution notices cannot be construed - as modifying the License. - - You may add Your own copyright statement to Your modifications and - may provide additional or different license terms and conditions - for use, reproduction, or distribution of Your modifications, or - for any such Derivative Works as a whole, provided Your use, - reproduction, and distribution of the Work otherwise complies with - the conditions stated in this License. - -5. Submission of Contributions. Unless You explicitly state otherwise, - any Contribution intentionally submitted for inclusion in the Work - by You to the Licensor shall be under the terms and conditions of - this License, without any additional terms or conditions. - Notwithstanding the above, nothing herein shall supersede or modify - the terms of any separate license agreement you may have executed - with Licensor regarding such Contributions. - -6. Trademarks. This License does not grant permission to use the trade - names, trademarks, service marks, or product names of the Licensor, - except as required for reasonable and customary use in describing the - origin of the Work and reproducing the content of the NOTICE file. - -7. Disclaimer of Warranty. Unless required by applicable law or - agreed to in writing, Licensor provides the Work (and each - Contributor provides its Contributions) on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or - implied, including, without limitation, any warranties or conditions - of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A - PARTICULAR PURPOSE. You are solely responsible for determining the - appropriateness of using or redistributing the Work and assume any - risks associated with Your exercise of permissions under this License. - -8. Limitation of Liability. In no event and under no legal theory, - whether in tort (including negligence), contract, or otherwise, - unless required by applicable law (such as deliberate and grossly - negligent acts) or agreed to in writing, shall any Contributor be - liable to You for damages, including any direct, indirect, special, - incidental, or consequential damages of any character arising as a - result of this License or out of the use or inability to use the - Work (including but not limited to damages for loss of goodwill, - work stoppage, computer failure or malfunction, or any and all - other commercial damages or losses), even if such Contributor - has been advised of the possibility of such damages. - -9. Accepting Warranty or Additional Liability. While redistributing - the Work or Derivative Works thereof, You may choose to offer, - and charge a fee for, acceptance of support, warranty, indemnity, - or other liability obligations and/or rights consistent with this - License. However, in accepting such obligations, You may act only - on Your own behalf and on Your sole responsibility, not on behalf - of any other Contributor, and only if You agree to indemnify, - defend, and hold each Contributor harmless for any liability - incurred by, or claims asserted against, such Contributor by reason - of your accepting any such warranty or additional liability. - -END OF TERMS AND CONDITIONS - -APPENDIX: How to apply the Apache License to your work. - - To apply the Apache License to your work, attach the following - boilerplate notice, with the fields enclosed by brackets "[]" - replaced with your own identifying information. (Don't include - the brackets!) The text should be enclosed in the appropriate - comment syntax for the file format. We also recommend that a - file or class name and description of purpose be included on the - same "printed page" as the copyright notice for easier - identification within third-party archives. - -Copyright [yyyy] [name of copyright owner] - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - https://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. diff --git a/rand/rand_chacha/LICENSE-MIT b/rand/rand_chacha/LICENSE-MIT deleted file mode 100644 index d93b5ba..0000000 --- a/rand/rand_chacha/LICENSE-MIT +++ /dev/null @@ -1,26 +0,0 @@ -Copyright 2018 Developers of the Rand project -Copyright (c) 2014 The Rust Project Developers - -Permission is hereby granted, free of charge, to any -person obtaining a copy of this software and associated -documentation files (the "Software"), to deal in the -Software without restriction, including without -limitation the rights to use, copy, modify, merge, -publish, distribute, sublicense, and/or sell copies of -the Software, and to permit persons to whom the Software -is furnished to do so, subject to the following -conditions: - -The above copyright notice and this permission notice -shall be included in all copies or substantial portions -of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF -ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED -TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A -PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT -SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY -CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION -OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR -IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER -DEALINGS IN THE SOFTWARE. diff --git a/rand/rand_chacha/README.md b/rand/rand_chacha/README.md deleted file mode 100644 index 69a0ce7..0000000 --- a/rand/rand_chacha/README.md +++ /dev/null @@ -1,49 +0,0 @@ -# rand_chacha - -[![Build Status](https://travis-ci.org/rust-random/rand.svg)](https://travis-ci.org/rust-random/rand) -[![Build Status](https://ci.appveyor.com/api/projects/status/github/rust-random/rand?svg=true)](https://ci.appveyor.com/project/rust-random/rand) -[![Latest version](https://img.shields.io/crates/v/rand_chacha.svg)](https://crates.io/crates/rand_chacha) -[![Book](https://img.shields.io/badge/book-master-yellow.svg)](https://rust-random.github.io/book/) -[![API](https://img.shields.io/badge/api-master-yellow.svg)](https://rust-random.github.io/rand/rand_chacha) -[![API](https://docs.rs/rand_chacha/badge.svg)](https://docs.rs/rand_chacha) -[![Minimum rustc version](https://img.shields.io/badge/rustc-1.32+-lightgray.svg)](https://github.com/rust-random/rand#rust-version-requirements) - -A cryptographically secure random number generator that uses the ChaCha -algorithm. - -ChaCha is a stream cipher designed by Daniel J. Bernstein[^1], that we use -as an RNG. It is an improved variant of the Salsa20 cipher family, which was -selected as one of the "stream ciphers suitable for widespread adoption" by -eSTREAM[^2]. - -The RNGs provided by this crate are implemented via the fast stream ciphers of -the [`c2-chacha`](https://crates.io/crates/c2-chacha) crate. - -Links: - -- [API documentation (master)](https://rust-random.github.io/rand/rand_chacha) -- [API documentation (docs.rs)](https://docs.rs/rand_chacha) -- [Changelog](https://github.com/rust-random/rand/blob/master/rand_chacha/CHANGELOG.md) - -[rand]: https://crates.io/crates/rand -[^1]: D. J. Bernstein, [*ChaCha, a variant of Salsa20*]( - https://cr.yp.to/chacha.html) - -[^2]: [eSTREAM: the ECRYPT Stream Cipher Project]( - http://www.ecrypt.eu.org/stream/) - - -## Crate Features - -`rand_chacha` is `no_std` compatible when disabling default features; the `std` -feature can be explicitly required to re-enable `std` support. Using `std` -allows detection of CPU features and thus better optimisation. - - -# License - -`rand_chacha` is distributed under the terms of both the MIT license and the -Apache License (Version 2.0). - -See [LICENSE-APACHE](LICENSE-APACHE) and [LICENSE-MIT](LICENSE-MIT), and -[COPYRIGHT](COPYRIGHT) for details. diff --git a/rand/rand_chacha/src/chacha.rs b/rand/rand_chacha/src/chacha.rs deleted file mode 100644 index b1b89e0..0000000 --- a/rand/rand_chacha/src/chacha.rs +++ /dev/null @@ -1,452 +0,0 @@ -// Copyright 2018 Developers of the Rand project. -// -// Licensed under the Apache License, Version 2.0 or the MIT license -// , at your -// option. This file may not be copied, modified, or distributed -// except according to those terms. - -//! The ChaCha random number generator. - -#[cfg(feature = "std")] -use std as core; -#[cfg(not(feature = "std"))] -use core; - -use c2_chacha::guts::ChaCha; -use self::core::fmt; -use rand_core::block::{BlockRng, BlockRngCore}; -use rand_core::{CryptoRng, Error, RngCore, SeedableRng}; - -const STREAM_PARAM_NONCE: u32 = 1; -const STREAM_PARAM_BLOCK: u32 = 0; - -pub struct Array64([T; 64]); -impl Default for Array64 where T: Default { - fn default() -> Self { - Self([T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), - T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), - T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), - T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), - T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), - T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), - T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), - T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), T::default(), T::default()]) - } -} -impl AsRef<[T]> for Array64 { - fn as_ref(&self) -> &[T] { - &self.0 - } -} -impl AsMut<[T]> for Array64 { - fn as_mut(&mut self) -> &mut [T] { - &mut self.0 - } -} -impl Clone for Array64 where T: Copy + Default { - fn clone(&self) -> Self { - let mut new = Self::default(); - new.0.copy_from_slice(&self.0); - new - } -} -impl fmt::Debug for Array64 { - fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { - write!(f, "Array64 {{}}") - } -} - -macro_rules! chacha_impl { - ($ChaChaXCore:ident, $ChaChaXRng:ident, $rounds:expr, $doc:expr) => { - #[doc=$doc] - #[derive(Clone)] - pub struct $ChaChaXCore { - state: ChaCha, - } - - // Custom Debug implementation that does not expose the internal state - impl fmt::Debug for $ChaChaXCore { - fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { - write!(f, "ChaChaXCore {{}}") - } - } - - impl BlockRngCore for $ChaChaXCore { - type Item = u32; - type Results = Array64; - #[inline] - fn generate(&mut self, r: &mut Self::Results) { - // Fill slice of words by writing to equivalent slice of bytes, then fixing endianness. - self.state.refill4($rounds, unsafe { - &mut *(&mut *r as *mut Array64 as *mut [u8; 256]) - }); - for x in r.as_mut() { - *x = x.to_le(); - } - } - } - - impl SeedableRng for $ChaChaXCore { - type Seed = [u8; 32]; - #[inline] - fn from_seed(seed: Self::Seed) -> Self { - $ChaChaXCore { state: ChaCha::new(&seed, &[0u8; 8]) } - } - } - - /// A cryptographically secure random number generator that uses the ChaCha algorithm. - /// - /// ChaCha is a stream cipher designed by Daniel J. Bernstein[^1], that we use as an RNG. It is - /// an improved variant of the Salsa20 cipher family, which was selected as one of the "stream - /// ciphers suitable for widespread adoption" by eSTREAM[^2]. - /// - /// ChaCha uses add-rotate-xor (ARX) operations as its basis. These are safe against timing - /// attacks, although that is mostly a concern for ciphers and not for RNGs. We provide a SIMD - /// implementation to support high throughput on a variety of common hardware platforms. - /// - /// With the ChaCha algorithm it is possible to choose the number of rounds the core algorithm - /// should run. The number of rounds is a tradeoff between performance and security, where 8 - /// rounds is the minimum potentially secure configuration, and 20 rounds is widely used as a - /// conservative choice. - /// - /// We use a 64-bit counter and 64-bit stream identifier as in Bernstein's implementation[^1] - /// except that we use a stream identifier in place of a nonce. A 64-bit counter over 64-byte - /// (16 word) blocks allows 1 ZiB of output before cycling, and the stream identifier allows - /// 264 unique streams of output per seed. Both counter and stream are initialized - /// to zero but may be set via the `set_word_pos` and `set_stream` methods. - /// - /// The word layout is: - /// - /// ```text - /// constant constant constant constant - /// seed seed seed seed - /// seed seed seed seed - /// counter counter stream_id stream_id - /// ``` - /// - /// This implementation uses an output buffer of sixteen `u32` words, and uses - /// [`BlockRng`] to implement the [`RngCore`] methods. - /// - /// [^1]: D. J. Bernstein, [*ChaCha, a variant of Salsa20*]( - /// https://cr.yp.to/chacha.html) - /// - /// [^2]: [eSTREAM: the ECRYPT Stream Cipher Project]( - /// http://www.ecrypt.eu.org/stream/) - #[derive(Clone, Debug)] - pub struct $ChaChaXRng { - rng: BlockRng<$ChaChaXCore>, - } - - impl SeedableRng for $ChaChaXRng { - type Seed = [u8; 32]; - #[inline] - fn from_seed(seed: Self::Seed) -> Self { - let core = $ChaChaXCore::from_seed(seed); - Self { - rng: BlockRng::new(core), - } - } - } - - impl RngCore for $ChaChaXRng { - #[inline] - fn next_u32(&mut self) -> u32 { - self.rng.next_u32() - } - #[inline] - fn next_u64(&mut self) -> u64 { - self.rng.next_u64() - } - #[inline] - fn fill_bytes(&mut self, bytes: &mut [u8]) { - self.rng.fill_bytes(bytes) - } - #[inline] - fn try_fill_bytes(&mut self, bytes: &mut [u8]) -> Result<(), Error> { - self.rng.try_fill_bytes(bytes) - } - } - - impl $ChaChaXRng { - // The buffer is a 4-block window, i.e. it is always at a block-aligned position in the - // stream but if the stream has been seeked it may not be self-aligned. - - /// Get the offset from the start of the stream, in 32-bit words. - /// - /// Since the generated blocks are 16 words (24) long and the - /// counter is 64-bits, the offset is a 68-bit number. Sub-word offsets are - /// not supported, hence the result can simply be multiplied by 4 to get a - /// byte-offset. - #[inline] - pub fn get_word_pos(&self) -> u128 { - let mut block = u128::from(self.rng.core.state.get_stream_param(STREAM_PARAM_BLOCK)); - // counter is incremented *after* filling buffer - block -= 4; - (block << 4) + self.rng.index() as u128 - } - - /// Set the offset from the start of the stream, in 32-bit words. - /// - /// As with `get_word_pos`, we use a 68-bit number. Since the generator - /// simply cycles at the end of its period (1 ZiB), we ignore the upper - /// 60 bits. - #[inline] - pub fn set_word_pos(&mut self, word_offset: u128) { - let block = (word_offset >> 4) as u64; - self.rng - .core - .state - .set_stream_param(STREAM_PARAM_BLOCK, block); - self.rng.generate_and_set((word_offset & 15) as usize); - } - - /// Set the stream number. - /// - /// This is initialized to zero; 264 unique streams of output - /// are available per seed/key. - /// - /// Note that in order to reproduce ChaCha output with a specific 64-bit - /// nonce, one can convert that nonce to a `u64` in little-endian fashion - /// and pass to this function. In theory a 96-bit nonce can be used by - /// passing the last 64-bits to this function and using the first 32-bits as - /// the most significant half of the 64-bit counter (which may be set - /// indirectly via `set_word_pos`), but this is not directly supported. - #[inline] - pub fn set_stream(&mut self, stream: u64) { - self.rng - .core - .state - .set_stream_param(STREAM_PARAM_NONCE, stream); - if self.rng.index() != 64 { - let wp = self.get_word_pos(); - self.set_word_pos(wp); - } - } - } - - impl CryptoRng for $ChaChaXRng {} - - impl From<$ChaChaXCore> for $ChaChaXRng { - fn from(core: $ChaChaXCore) -> Self { - $ChaChaXRng { - rng: BlockRng::new(core), - } - } - } - } -} - -chacha_impl!(ChaCha20Core, ChaCha20Rng, 10, "ChaCha with 20 rounds"); -chacha_impl!(ChaCha12Core, ChaCha12Rng, 6, "ChaCha with 12 rounds"); -chacha_impl!(ChaCha8Core, ChaCha8Rng, 4, "ChaCha with 8 rounds"); - -#[cfg(test)] -mod test { - use rand_core::{RngCore, SeedableRng}; - - type ChaChaRng = super::ChaCha20Rng; - - #[test] - fn test_chacha_construction() { - let seed = [ - 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, - 0, 0, 0, - ]; - let mut rng1 = ChaChaRng::from_seed(seed); - assert_eq!(rng1.next_u32(), 137206642); - - let mut rng2 = ChaChaRng::from_rng(rng1).unwrap(); - assert_eq!(rng2.next_u32(), 1325750369); - } - - #[test] - fn test_chacha_true_values_a() { - // Test vectors 1 and 2 from - // https://tools.ietf.org/html/draft-nir-cfrg-chacha20-poly1305-04 - let seed = [0u8; 32]; - let mut rng = ChaChaRng::from_seed(seed); - - let mut results = [0u32; 16]; - for i in results.iter_mut() { - *i = rng.next_u32(); - } - let expected = [ - 0xade0b876, 0x903df1a0, 0xe56a5d40, 0x28bd8653, 0xb819d2bd, 0x1aed8da0, 0xccef36a8, - 0xc70d778b, 0x7c5941da, 0x8d485751, 0x3fe02477, 0x374ad8b8, 0xf4b8436a, 0x1ca11815, - 0x69b687c3, 0x8665eeb2, - ]; - assert_eq!(results, expected); - - for i in results.iter_mut() { - *i = rng.next_u32(); - } - let expected = [ - 0xbee7079f, 0x7a385155, 0x7c97ba98, 0x0d082d73, 0xa0290fcb, 0x6965e348, 0x3e53c612, - 0xed7aee32, 0x7621b729, 0x434ee69c, 0xb03371d5, 0xd539d874, 0x281fed31, 0x45fb0a51, - 0x1f0ae1ac, 0x6f4d794b, - ]; - assert_eq!(results, expected); - } - - #[test] - fn test_chacha_true_values_b() { - // Test vector 3 from - // https://tools.ietf.org/html/draft-nir-cfrg-chacha20-poly1305-04 - let seed = [ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 1, - ]; - let mut rng = ChaChaRng::from_seed(seed); - - // Skip block 0 - for _ in 0..16 { - rng.next_u32(); - } - - let mut results = [0u32; 16]; - for i in results.iter_mut() { - *i = rng.next_u32(); - } - let expected = [ - 0x2452eb3a, 0x9249f8ec, 0x8d829d9b, 0xddd4ceb1, 0xe8252083, 0x60818b01, 0xf38422b8, - 0x5aaa49c9, 0xbb00ca8e, 0xda3ba7b4, 0xc4b592d1, 0xfdf2732f, 0x4436274e, 0x2561b3c8, - 0xebdd4aa6, 0xa0136c00, - ]; - assert_eq!(results, expected); - } - - #[test] - fn test_chacha_true_values_c() { - // Test vector 4 from - // https://tools.ietf.org/html/draft-nir-cfrg-chacha20-poly1305-04 - let seed = [ - 0, 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, - ]; - let expected = [ - 0xfb4dd572, 0x4bc42ef1, 0xdf922636, 0x327f1394, 0xa78dea8f, 0x5e269039, 0xa1bebbc1, - 0xcaf09aae, 0xa25ab213, 0x48a6b46c, 0x1b9d9bcb, 0x092c5be6, 0x546ca624, 0x1bec45d5, - 0x87f47473, 0x96f0992e, - ]; - let expected_end = 3 * 16; - let mut results = [0u32; 16]; - - // Test block 2 by skipping block 0 and 1 - let mut rng1 = ChaChaRng::from_seed(seed); - for _ in 0..32 { - rng1.next_u32(); - } - for i in results.iter_mut() { - *i = rng1.next_u32(); - } - assert_eq!(results, expected); - assert_eq!(rng1.get_word_pos(), expected_end); - - // Test block 2 by using `set_word_pos` - let mut rng2 = ChaChaRng::from_seed(seed); - rng2.set_word_pos(2 * 16); - for i in results.iter_mut() { - *i = rng2.next_u32(); - } - assert_eq!(results, expected); - assert_eq!(rng2.get_word_pos(), expected_end); - - // Test skipping behaviour with other types - let mut buf = [0u8; 32]; - rng2.fill_bytes(&mut buf[..]); - assert_eq!(rng2.get_word_pos(), expected_end + 8); - rng2.fill_bytes(&mut buf[0..25]); - assert_eq!(rng2.get_word_pos(), expected_end + 15); - rng2.next_u64(); - assert_eq!(rng2.get_word_pos(), expected_end + 17); - rng2.next_u32(); - rng2.next_u64(); - assert_eq!(rng2.get_word_pos(), expected_end + 20); - rng2.fill_bytes(&mut buf[0..1]); - assert_eq!(rng2.get_word_pos(), expected_end + 21); - } - - #[test] - fn test_chacha_multiple_blocks() { - let seed = [ - 0, 0, 0, 0, 1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0, 4, 0, 0, 0, 5, 0, 0, 0, 6, 0, 0, 0, 7, - 0, 0, 0, - ]; - let mut rng = ChaChaRng::from_seed(seed); - - // Store the 17*i-th 32-bit word, - // i.e., the i-th word of the i-th 16-word block - let mut results = [0u32; 16]; - for i in results.iter_mut() { - *i = rng.next_u32(); - for _ in 0..16 { - rng.next_u32(); - } - } - let expected = [ - 0xf225c81a, 0x6ab1be57, 0x04d42951, 0x70858036, 0x49884684, 0x64efec72, 0x4be2d186, - 0x3615b384, 0x11cfa18e, 0xd3c50049, 0x75c775f6, 0x434c6530, 0x2c5bad8f, 0x898881dc, - 0x5f1c86d9, 0xc1f8e7f4, - ]; - assert_eq!(results, expected); - } - - #[test] - fn test_chacha_true_bytes() { - let seed = [0u8; 32]; - let mut rng = ChaChaRng::from_seed(seed); - let mut results = [0u8; 32]; - rng.fill_bytes(&mut results); - let expected = [ - 118, 184, 224, 173, 160, 241, 61, 144, 64, 93, 106, 229, 83, 134, 189, 40, 189, 210, - 25, 184, 160, 141, 237, 26, 168, 54, 239, 204, 139, 119, 13, 199, - ]; - assert_eq!(results, expected); - } - - #[test] - fn test_chacha_nonce() { - // Test vector 5 from - // https://tools.ietf.org/html/draft-nir-cfrg-chacha20-poly1305-04 - // Although we do not support setting a nonce, we try it here anyway so - // we can use this test vector. - let seed = [0u8; 32]; - let mut rng = ChaChaRng::from_seed(seed); - // 96-bit nonce in LE order is: 0,0,0,0, 0,0,0,0, 0,0,0,2 - rng.set_stream(2u64 << (24 + 32)); - - let mut results = [0u32; 16]; - for i in results.iter_mut() { - *i = rng.next_u32(); - } - let expected = [ - 0x374dc6c2, 0x3736d58c, 0xb904e24a, 0xcd3f93ef, 0x88228b1a, 0x96a4dfb3, 0x5b76ab72, - 0xc727ee54, 0x0e0e978a, 0xf3145c95, 0x1b748ea8, 0xf786c297, 0x99c28f5f, 0x628314e8, - 0x398a19fa, 0x6ded1b53, - ]; - assert_eq!(results, expected); - } - - #[test] - fn test_chacha_clone_streams() { - let seed = [ - 0, 0, 0, 0, 1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0, 4, 0, 0, 0, 5, 0, 0, 0, 6, 0, 0, 0, 7, - 0, 0, 0, - ]; - let mut rng = ChaChaRng::from_seed(seed); - let mut clone = rng.clone(); - for _ in 0..16 { - assert_eq!(rng.next_u64(), clone.next_u64()); - } - - rng.set_stream(51); - for _ in 0..7 { - assert!(rng.next_u32() != clone.next_u32()); - } - clone.set_stream(51); // switch part way through block - for _ in 7..16 { - assert_eq!(rng.next_u32(), clone.next_u32()); - } - } -} diff --git a/rand/rand_chacha/src/lib.rs b/rand/rand_chacha/src/lib.rs deleted file mode 100644 index e374bdd..0000000 --- a/rand/rand_chacha/src/lib.rs +++ /dev/null @@ -1,30 +0,0 @@ -// Copyright 2018 Developers of the Rand project. -// -// Licensed under the Apache License, Version 2.0 or the MIT license -// , at your -// option. This file may not be copied, modified, or distributed -// except according to those terms. - -//! The ChaCha random number generator. - -#![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk.png", - html_favicon_url = "https://www.rust-lang.org/favicon.ico", - html_root_url = "https://rust-random.github.io/rand/")] - -#![deny(missing_docs)] -#![deny(missing_debug_implementations)] -#![doc(test(attr(allow(unused_variables), deny(warnings))))] - -#![cfg_attr(not(feature = "std"), no_std)] - -pub use rand_core; - -mod chacha; - -pub use crate::chacha::{ChaCha12Core, ChaCha12Rng, ChaCha20Core, ChaCha20Rng, ChaCha8Core, ChaCha8Rng}; - -/// ChaCha with 20 rounds -pub type ChaChaRng = ChaCha20Rng; -/// ChaCha with 20 rounds, low-level interface -pub type ChaChaCore = ChaCha20Core; -- cgit v1.2.3