1 files changed, 0 insertions, 243 deletions
diff --git a/vendor/rand_chacha-0.2.2/src/guts.rs b/vendor/rand_chacha-0.2.2/src/guts.rs
deleted file mode 100644
index 7561c1bcd..000000000
--- a/vendor/rand_chacha-0.2.2/src/guts.rs
+++ /dev/null
@@ -1,243 +0,0 @@
-// Copyright 2019 The CryptoCorrosion Contributors
-// Copyright 2020 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! The ChaCha random number generator.
-
-use ppv_lite86::{dispatch, dispatch_light128};
-
-pub use ppv_lite86::Machine;
-use ppv_lite86::{vec128_storage, ArithOps, BitOps32, LaneWords4, MultiLane, StoreBytes, Vec4};
-
-pub(crate) const BLOCK: usize = 64;
-pub(crate) const BLOCK64: u64 = BLOCK as u64;
-const LOG2_BUFBLOCKS: u64 = 2;
-const BUFBLOCKS: u64 = 1 << LOG2_BUFBLOCKS;
-pub(crate) const BUFSZ64: u64 = BLOCK64 * BUFBLOCKS;
-pub(crate) const BUFSZ: usize = BUFSZ64 as usize;
-
-#[derive(Clone)]
-pub struct ChaCha {
-    pub(crate) b: vec128_storage,
-    pub(crate) c: vec128_storage,
-    pub(crate) d: vec128_storage,
-}
-
-#[derive(Clone)]
-pub struct State<V> {
-    pub(crate) a: V,
-    pub(crate) b: V,
-    pub(crate) c: V,
-    pub(crate) d: V,
-}
-
-#[inline(always)]
-pub(crate) fn round<V: ArithOps + BitOps32>(mut x: State<V>) -> State<V> {
-    x.a += x.b;
-    x.d = (x.d ^ x.a).rotate_each_word_right16();
-    x.c += x.d;
-    x.b = (x.b ^ x.c).rotate_each_word_right20();
-    x.a += x.b;
-    x.d = (x.d ^ x.a).rotate_each_word_right24();
-    x.c += x.d;
-    x.b = (x.b ^ x.c).rotate_each_word_right25();
-    x
-}
-
-#[inline(always)]
-pub(crate) fn diagonalize<V: LaneWords4>(mut x: State<V>) -> State<V> {
-    x.b = x.b.shuffle_lane_words3012();
-    x.c = x.c.shuffle_lane_words2301();
-    x.d = x.d.shuffle_lane_words1230();
-    x
-}
-#[inline(always)]
-pub(crate) fn undiagonalize<V: LaneWords4>(mut x: State<V>) -> State<V> {
-    x.b = x.b.shuffle_lane_words1230();
-    x.c = x.c.shuffle_lane_words2301();
-    x.d = x.d.shuffle_lane_words3012();
-    x
-}
-
-impl ChaCha {
-    #[inline(always)]
-    pub fn new(key: &[u8; 32], nonce: &[u8]) -> Self {
-        init_chacha(key, nonce)
-    }
-
-    #[inline(always)]
-    fn pos64<M: Machine>(&self, m: M) -> u64 {
-        let d: M::u32x4 = m.unpack(self.d);
-        ((d.extract(1) as u64) << 32) | d.extract(0) as u64
-    }
-
-    /// Produce 4 blocks of output, advancing the state
-    #[inline(always)]
-    pub fn refill4(&mut self, drounds: u32, out: &mut [u8; BUFSZ]) {
-        refill_wide(self, drounds, out)
-    }
-
-    #[inline(always)]
-    pub fn set_stream_param(&mut self, param: u32, value: u64) {
-        set_stream_param(self, param, value)
-    }
-
-    #[inline(always)]
-    pub fn get_stream_param(&self, param: u32) -> u64 {
-        get_stream_param(self, param)
-    }
-}
-
-#[inline(always)]
-fn refill_wide_impl<Mach: Machine>(
-    m: Mach, state: &mut ChaCha, drounds: u32, out: &mut [u8; BUFSZ],
-) {
-    let k = m.vec([0x6170_7865, 0x3320_646e, 0x7962_2d32, 0x6b20_6574]);
-    let mut pos = state.pos64(m);
-    let d0: Mach::u32x4 = m.unpack(state.d);
-    pos += 1;
-    let d1 = d0.insert((pos >> 32) as u32, 1).insert(pos as u32, 0);
-    pos += 1;
-    let d2 = d0.insert((pos >> 32) as u32, 1).insert(pos as u32, 0);
-    pos += 1;
-    let d3 = d0.insert((pos >> 32) as u32, 1).insert(pos as u32, 0);
-
-    let b = m.unpack(state.b);
-    let c = m.unpack(state.c);
-    let mut x = State {
-        a: Mach::u32x4x4::from_lanes([k, k, k, k]),
-        b: Mach::u32x4x4::from_lanes([b, b, b, b]),
-        c: Mach::u32x4x4::from_lanes([c, c, c, c]),
-        d: m.unpack(Mach::u32x4x4::from_lanes([d0, d1, d2, d3]).into()),
-    };
-    for _ in 0..drounds {
-        x = round(x);
-        x = undiagonalize(round(diagonalize(x)));
-    }
-    let mut pos = state.pos64(m);
-    let d0: Mach::u32x4 = m.unpack(state.d);
-    pos += 1;
-    let d1 = d0.insert((pos >> 32) as u32, 1).insert(pos as u32, 0);
-    pos += 1;
-    let d2 = d0.insert((pos >> 32) as u32, 1).insert(pos as u32, 0);
-    pos += 1;
-    let d3 = d0.insert((pos >> 32) as u32, 1).insert(pos as u32, 0);
-    pos += 1;
-    let d4 = d0.insert((pos >> 32) as u32, 1).insert(pos as u32, 0);
-
-    let (a, b, c, d) = (
-        x.a.to_lanes(),
-        x.b.to_lanes(),
-        x.c.to_lanes(),
-        x.d.to_lanes(),
-    );
-    let sb = m.unpack(state.b);
-    let sc = m.unpack(state.c);
-    let sd = [m.unpack(state.d), d1, d2, d3];
-    state.d = d4.into();
-    let mut words = out.chunks_exact_mut(16);
-    for ((((&a, &b), &c), &d), &sd) in a.iter().zip(&b).zip(&c).zip(&d).zip(&sd) {
-        (a + k).write_le(words.next().unwrap());
-        (b + sb).write_le(words.next().unwrap());
-        (c + sc).write_le(words.next().unwrap());
-        (d + sd).write_le(words.next().unwrap());
-    }
-}
-
-dispatch!(m, Mach, {
-    fn refill_wide(state: &mut ChaCha, drounds: u32, out: &mut [u8; BUFSZ]) {
-        refill_wide_impl(m, state, drounds, out);
-    }
-});
-
-// Single-block, rounds-only; shared by try_apply_keystream for tails shorter than BUFSZ
-// and XChaCha's setup step.
-dispatch!(m, Mach, {
-    fn refill_narrow_rounds(state: &mut ChaCha, drounds: u32) -> State<vec128_storage> {
-        let k: Mach::u32x4 = m.vec([0x6170_7865, 0x3320_646e, 0x7962_2d32, 0x6b20_6574]);
-        let mut x = State {
-            a: k,
-            b: m.unpack(state.b),
-            c: m.unpack(state.c),
-            d: m.unpack(state.d),
-        };
-        for _ in 0..drounds {
-            x = round(x);
-            x = undiagonalize(round(diagonalize(x)));
-        }
-        State {
-            a: x.a.into(),
-            b: x.b.into(),
-            c: x.c.into(),
-            d: x.d.into(),
-        }
-    }
-});
-
-dispatch_light128!(m, Mach, {
-    fn set_stream_param(state: &mut ChaCha, param: u32, value: u64) {
-        let d: Mach::u32x4 = m.unpack(state.d);
-        state.d = d
-            .insert((value >> 32) as u32, (param << 1) | 1)
-            .insert(value as u32, param << 1)
-            .into();
-    }
-});
-
-dispatch_light128!(m, Mach, {
-    fn get_stream_param(state: &ChaCha, param: u32) -> u64 {
-        let d: Mach::u32x4 = m.unpack(state.d);
-        ((d.extract((param << 1) | 1) as u64) << 32) | d.extract(param << 1) as u64
-    }
-});
-
-fn read_u32le(xs: &[u8]) -> u32 {
-    assert_eq!(xs.len(), 4);
-    u32::from(xs[0]) | (u32::from(xs[1]) << 8) | (u32::from(xs[2]) << 16) | (u32::from(xs[3]) << 24)
-}
-
-dispatch_light128!(m, Mach, {
-    fn init_chacha(key: &[u8; 32], nonce: &[u8]) -> ChaCha {
-        let ctr_nonce = [
-            0,
-            if nonce.len() == 12 {
-                read_u32le(&nonce[0..4])
-            } else {
-                0
-            },
-            read_u32le(&nonce[nonce.len() - 8..nonce.len() - 4]),
-            read_u32le(&nonce[nonce.len() - 4..]),
-        ];
-        let key0: Mach::u32x4 = m.read_le(&key[..16]);
-        let key1: Mach::u32x4 = m.read_le(&key[16..]);
-        ChaCha {
-            b: key0.into(),
-            c: key1.into(),
-            d: ctr_nonce.into(),
-        }
-    }
-});
-
-dispatch_light128!(m, Mach, {
-    fn init_chacha_x(key: &[u8; 32], nonce: &[u8; 24], rounds: u32) -> ChaCha {
-        let key0: Mach::u32x4 = m.read_le(&key[..16]);
-        let key1: Mach::u32x4 = m.read_le(&key[16..]);
-        let nonce0: Mach::u32x4 = m.read_le(&nonce[..16]);
-        let mut state = ChaCha {
-            b: key0.into(),
-            c: key1.into(),
-            d: nonce0.into(),
-        };
-        let x = refill_narrow_rounds(&mut state, rounds);
-        let ctr_nonce1 = [0, 0, read_u32le(&nonce[16..20]), read_u32le(&nonce[20..24])];
-        state.b = x.a;
-        state.c = x.d;
-        state.d = ctr_nonce1.into();
-        state
-    }
-});