rand_chacha-0.2.1/CHANGELOG.md010064400017500001750000000011671351634074400137730ustar0000000000000000# 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 rand_chacha-0.2.1/COPYRIGHT010064400017500001750000000010711347154030000134350ustar0000000000000000Copyrights 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. rand_chacha-0.2.1/Cargo.toml.orig010064400017500001750000000015361351634074400150510ustar0000000000000000[package] name = "rand_chacha" version = "0.2.1" authors = ["The Rand Project Developers", "The Rust Project Developers", "The CryptoCorrosion Contributors"] license = "MIT/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 rand_chacha-0.2.1/Cargo.toml0000644000000025010000000000000113020ustar00# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO # # When uploading crates to the registry Cargo will automatically # "normalize" Cargo.toml files for maximal compatibility # with all versions of Cargo and also rewrite `path` dependencies # to registry (e.g., crates.io) dependencies # # If you believe there's an error in this file please file an # issue against the rust-lang/cargo repository. If you're # editing this file be aware that the upstream Cargo.toml # will likely look very different (and much more reasonable) [package] edition = "2018" name = "rand_chacha" version = "0.2.1" authors = ["The Rand Project Developers", "The Rust Project Developers", "The CryptoCorrosion Contributors"] description = "ChaCha random number generator\n" homepage = "https://crates.io/crates/rand_chacha" documentation = "https://rust-random.github.io/rand/rand_chacha/" readme = "README.md" keywords = ["random", "rng", "chacha"] categories = ["algorithms", "no-std"] license = "MIT/Apache-2.0" repository = "https://github.com/rust-random/rand" [dependencies.c2-chacha] version = "0.2.2" features = ["simd"] default-features = false [dependencies.rand_core] version = "0.5" [features] default = ["std", "simd"] simd = [] std = ["c2-chacha/std"] [badges.appveyor] repository = "rust-random/rand" [badges.travis-ci] repository = "rust-random/rand" rand_chacha-0.2.1/LICENSE-APACHE010064400017500001750000000251411347154030000140720ustar0000000000000000 Apache License Version 2.0, January 2004 https://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. 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See the License for the specific language governing permissions and limitations under the License. rand_chacha-0.2.1/LICENSE-MIT010064400017500001750000000021351347154030000136000ustar0000000000000000Copyright 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. 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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. rand_chacha-0.2.1/README.md010064400017500001750000000042351351634074400134400ustar0000000000000000# 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. rand_chacha-0.2.1/src/chacha.rs010064400017500001750000000416451350510270300145200ustar0000000000000000// 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 { core::mem::transmute::<&mut Array64, &mut [u8; 256]>(&mut *r) }); 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()); } } } rand_chacha-0.2.1/src/lib.rs010064400017500001750000000020461350510267400140560ustar0000000000000000// 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; rand_chacha-0.2.1/.cargo_vcs_info.json0000644000000001120000000000000133000ustar00{ "git": { "sha1": "fe44b39896894a0038960f630ba0c6a45608ba83" } }