2021-01-08 00:10:55 -08:00
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use super::{
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super::DIGEST_SIZE, BlockWord, CellValue16, CellValue32, SpreadInputs, SpreadVar,
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Table16Assignment, Table16Chip, ROUNDS, STATE,
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};
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use crate::{
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arithmetic::FieldExt,
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circuit::Layouter,
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plonk::{Advice, Column, ConstraintSystem, Error, Fixed, Permutation},
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2021-01-14 20:59:54 -08:00
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poly::Rotation,
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2021-01-08 00:10:55 -08:00
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};
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2021-01-14 20:59:54 -08:00
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mod compression_gates;
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2021-01-08 00:10:55 -08:00
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// mod compression_util;
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// mod subregion_digest;
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// mod subregion_initial;
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// mod subregion_main;
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2021-01-14 20:59:54 -08:00
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use compression_gates::CompressionGate;
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2021-01-08 00:10:55 -08:00
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/// A variable that represents the `[A,B,C,D]` words of the SHA-256 internal state.
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///
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/// The structure of this variable is influenced by the following factors:
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/// - In `Σ_0(A)` we need `A` to be split into pieces `(a,b,c,d)` of lengths `(2,11,9,10)`
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/// bits respectively (counting from the little end), as well as their spread forms.
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/// - `Maj(A,B,C)` requires having the bits of each input in spread form. For `A` we can
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/// reuse the pieces from `Σ_0(A)`. Since `B` and `C` are assigned from `A` and `B`
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/// respectively in each round, we therefore also have the same pieces in earlier rows.
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/// We align the columns to make it efficient to copy-constrain these forms where they
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/// are needed.
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#[derive(Copy, Clone, Debug)]
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pub struct AbcdVar {
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idx: i32,
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val: u32,
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a: SpreadVar,
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b: SpreadVar,
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c_lo: SpreadVar,
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c_mid: SpreadVar,
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c_hi: SpreadVar,
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d: SpreadVar,
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}
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/// A variable that represents the `[E,F,G,H]` words of the SHA-256 internal state.
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///
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/// The structure of this variable is influenced by the following factors:
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/// - In `Σ_1(E)` we need `E` to be split into pieces `(a,b,c,d)` of lengths `(6,5,14,7)`
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/// bits respectively (counting from the little end), as well as their spread forms.
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/// - `Ch(E,F,G)` requires having the bits of each input in spread form. For `E` we can
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/// reuse the pieces from `Σ_1(E)`. Since `F` and `G` are assigned from `E` and `F`
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/// respectively in each round, we therefore also have the same pieces in earlier rows.
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/// We align the columns to make it efficient to copy-constrain these forms where they
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/// are needed.
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#[derive(Copy, Clone, Debug)]
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pub struct EfghVar {
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idx: i32,
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val: u32,
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a_lo: SpreadVar,
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a_hi: SpreadVar,
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b_lo: SpreadVar,
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b_hi: SpreadVar,
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c: SpreadVar,
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d: SpreadVar,
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}
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#[derive(Clone, Debug)]
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pub struct RoundWordDense {
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dense_halves: (CellValue16, CellValue16),
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}
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impl RoundWordDense {
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pub fn new(dense_halves: (CellValue16, CellValue16)) -> Self {
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RoundWordDense { dense_halves }
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}
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}
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#[derive(Clone, Debug)]
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pub struct RoundWordSpread {
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dense_halves: (CellValue16, CellValue16),
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spread_halves: (CellValue32, CellValue32),
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}
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impl RoundWordSpread {
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pub fn new(
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dense_halves: (CellValue16, CellValue16),
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spread_halves: (CellValue32, CellValue32),
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) -> Self {
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RoundWordSpread {
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dense_halves,
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spread_halves,
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}
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}
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}
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impl Into<RoundWordDense> for RoundWordSpread {
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fn into(self) -> RoundWordDense {
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RoundWordDense::new(self.dense_halves)
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}
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}
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#[derive(Clone, Debug)]
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pub struct RoundWordA {
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pieces: Option<AbcdVar>,
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dense_halves: (CellValue16, CellValue16),
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spread_halves: Option<(CellValue32, CellValue32)>,
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}
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impl RoundWordA {
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pub fn new(
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pieces: AbcdVar,
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dense_halves: (CellValue16, CellValue16),
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spread_halves: (CellValue32, CellValue32),
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) -> Self {
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RoundWordA {
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pieces: Some(pieces),
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dense_halves,
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spread_halves: Some(spread_halves),
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}
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}
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pub fn new_dense(dense_halves: (CellValue16, CellValue16)) -> Self {
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RoundWordA {
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pieces: None,
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dense_halves,
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spread_halves: None,
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}
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}
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}
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impl Into<RoundWordSpread> for RoundWordA {
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fn into(self) -> RoundWordSpread {
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RoundWordSpread::new(self.dense_halves, self.spread_halves.unwrap())
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}
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}
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#[derive(Clone, Debug)]
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pub struct RoundWordE {
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pieces: Option<EfghVar>,
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dense_halves: (CellValue16, CellValue16),
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spread_halves: Option<(CellValue32, CellValue32)>,
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}
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impl RoundWordE {
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pub fn new(
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pieces: EfghVar,
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dense_halves: (CellValue16, CellValue16),
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spread_halves: (CellValue32, CellValue32),
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) -> Self {
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RoundWordE {
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pieces: Some(pieces),
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dense_halves,
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spread_halves: Some(spread_halves),
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}
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}
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pub fn new_dense(dense_halves: (CellValue16, CellValue16)) -> Self {
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RoundWordE {
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pieces: None,
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dense_halves,
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spread_halves: None,
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}
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}
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}
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impl Into<RoundWordSpread> for RoundWordE {
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fn into(self) -> RoundWordSpread {
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RoundWordSpread::new(self.dense_halves, self.spread_halves.unwrap())
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}
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}
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/// The internal state for SHA-256.
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#[derive(Clone, Debug)]
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pub struct State {
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a: Option<StateWord>,
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b: Option<StateWord>,
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c: Option<StateWord>,
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d: Option<StateWord>,
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e: Option<StateWord>,
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f: Option<StateWord>,
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g: Option<StateWord>,
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h: Option<StateWord>,
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}
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impl State {
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pub fn new(
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a: StateWord,
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b: StateWord,
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c: StateWord,
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d: StateWord,
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e: StateWord,
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f: StateWord,
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g: StateWord,
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h: StateWord,
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) -> Self {
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State {
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a: Some(a),
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b: Some(b),
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c: Some(c),
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d: Some(d),
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e: Some(e),
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f: Some(f),
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g: Some(g),
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h: Some(h),
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}
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}
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pub fn empty_state() -> Self {
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State {
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a: None,
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b: None,
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c: None,
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d: None,
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e: None,
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f: None,
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g: None,
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h: None,
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}
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}
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}
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#[derive(Clone, Debug)]
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pub enum StateWord {
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A(RoundWordA),
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B(RoundWordSpread),
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C(RoundWordSpread),
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D(RoundWordDense),
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E(RoundWordE),
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F(RoundWordSpread),
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G(RoundWordSpread),
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H(RoundWordDense),
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}
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#[derive(Clone, Debug)]
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pub(super) struct Compression {
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lookup: SpreadInputs,
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message_schedule: Column<Advice>,
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extras: [Column<Advice>; 6],
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s_ch: Column<Fixed>,
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s_ch_neg: Column<Fixed>,
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s_maj: Column<Fixed>,
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s_h_prime: Column<Fixed>,
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s_a_new: Column<Fixed>,
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s_e_new: Column<Fixed>,
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s_upper_sigma_0: Column<Fixed>,
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s_upper_sigma_1: Column<Fixed>,
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// Decomposition gate for AbcdVar
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s_decompose_abcd: Column<Fixed>,
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// Decomposition gate for EfghVar
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s_decompose_efgh: Column<Fixed>,
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s_digest: Column<Fixed>,
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perm: Permutation,
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}
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impl<F: FieldExt> Table16Assignment<F> for Compression {}
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impl Compression {
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pub(super) fn configure<F: FieldExt>(
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meta: &mut ConstraintSystem<F>,
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lookup: SpreadInputs,
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message_schedule: Column<Advice>,
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extras: [Column<Advice>; 6],
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perm: Permutation,
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) -> Self {
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let s_ch = meta.fixed_column();
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let s_ch_neg = meta.fixed_column();
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let s_maj = meta.fixed_column();
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let s_h_prime = meta.fixed_column();
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let s_a_new = meta.fixed_column();
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let s_e_new = meta.fixed_column();
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let s_upper_sigma_0 = meta.fixed_column();
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let s_upper_sigma_1 = meta.fixed_column();
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// Decomposition gate for AbcdVar
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let s_decompose_abcd = meta.fixed_column();
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// Decomposition gate for EfghVar
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let s_decompose_efgh = meta.fixed_column();
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let s_digest = meta.fixed_column();
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// Rename these here for ease of matching the gates to the specification.
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let a_0 = lookup.tag;
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let a_1 = lookup.dense;
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let a_2 = lookup.spread;
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let a_3 = extras[0];
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let a_4 = extras[1];
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let a_5 = message_schedule;
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let a_6 = extras[2];
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let a_7 = extras[3];
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let a_8 = extras[4];
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let a_9 = extras[5];
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2021-01-14 20:59:54 -08:00
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// Decompose `A,B,C,D` words into (2, 11, 9, 10)-bit chunks.
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// `c` is split into (3, 3, 3)-bit c_lo, c_mid, c_hi.
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meta.create_gate("decompose ABCD", |meta| {
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let s_decompose_abcd = meta.query_fixed(s_decompose_abcd, Rotation::cur());
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let a = meta.query_advice(a_3, Rotation::next()); // 2-bit chunk
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let spread_a = meta.query_advice(a_4, Rotation::next());
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let b = meta.query_advice(a_1, Rotation::cur()); // 11-bit chunk
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let spread_b = meta.query_advice(a_2, Rotation::cur());
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let tag_b = meta.query_advice(a_0, Rotation::cur());
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let c_lo = meta.query_advice(a_3, Rotation::cur()); // 3-bit chunk
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let spread_c_lo = meta.query_advice(a_4, Rotation::cur());
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let c_mid = meta.query_advice(a_5, Rotation::cur()); // 3-bit chunk
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let spread_c_mid = meta.query_advice(a_6, Rotation::cur());
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let c_hi = meta.query_advice(a_5, Rotation::next()); // 3-bit chunk
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let spread_c_hi = meta.query_advice(a_6, Rotation::next());
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let d = meta.query_advice(a_1, Rotation::next()); // 7-bit chunk
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let spread_d = meta.query_advice(a_2, Rotation::next());
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let tag_d = meta.query_advice(a_0, Rotation::next());
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let word_lo = meta.query_advice(a_7, Rotation::cur());
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let spread_word_lo = meta.query_advice(a_8, Rotation::cur());
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let word_hi = meta.query_advice(a_7, Rotation::next());
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let spread_word_hi = meta.query_advice(a_8, Rotation::next());
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CompressionGate::s_decompose_abcd(
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s_decompose_abcd,
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a,
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spread_a,
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b,
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spread_b,
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tag_b,
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c_lo,
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spread_c_lo,
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c_mid,
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spread_c_mid,
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c_hi,
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spread_c_hi,
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d,
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spread_d,
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tag_d,
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word_lo,
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spread_word_lo,
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word_hi,
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spread_word_hi,
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)
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.0
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});
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// Decompose `E,F,G,H` words into (6, 5, 14, 7)-bit chunks.
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// `a` is split into (3, 3)-bit a_lo, a_hi
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// `b` is split into (2, 3)-bit b_lo, b_hi
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meta.create_gate("Decompose EFGH", |meta| {
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let s_decompose_efgh = meta.query_fixed(s_decompose_efgh, Rotation::cur());
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let a_lo = meta.query_advice(a_3, Rotation::next()); // 3-bit chunk
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let spread_a_lo = meta.query_advice(a_4, Rotation::next());
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let a_hi = meta.query_advice(a_5, Rotation::next()); // 3-bit chunk
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let spread_a_hi = meta.query_advice(a_6, Rotation::next());
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let b_lo = meta.query_advice(a_3, Rotation::cur()); // 2-bit chunk
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let spread_b_lo = meta.query_advice(a_4, Rotation::cur());
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let b_hi = meta.query_advice(a_5, Rotation::cur()); // 3-bit chunk
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let spread_b_hi = meta.query_advice(a_6, Rotation::cur());
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let c = meta.query_advice(a_1, Rotation::next()); // 14-bit chunk
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let spread_c = meta.query_advice(a_2, Rotation::next());
|
|
|
|
let tag_c = meta.query_advice(a_0, Rotation::next());
|
|
|
|
let d = meta.query_advice(a_1, Rotation::cur()); // 7-bit chunk
|
|
|
|
let spread_d = meta.query_advice(a_2, Rotation::cur());
|
|
|
|
let tag_d = meta.query_advice(a_0, Rotation::cur());
|
|
|
|
let word_lo = meta.query_advice(a_7, Rotation::cur());
|
|
|
|
let spread_word_lo = meta.query_advice(a_8, Rotation::cur());
|
|
|
|
let word_hi = meta.query_advice(a_7, Rotation::next());
|
|
|
|
let spread_word_hi = meta.query_advice(a_8, Rotation::next());
|
|
|
|
|
|
|
|
CompressionGate::s_decompose_efgh(
|
|
|
|
s_decompose_efgh,
|
|
|
|
a_lo,
|
|
|
|
spread_a_lo,
|
|
|
|
a_hi,
|
|
|
|
spread_a_hi,
|
|
|
|
b_lo,
|
|
|
|
spread_b_lo,
|
|
|
|
b_hi,
|
|
|
|
spread_b_hi,
|
|
|
|
c,
|
|
|
|
spread_c,
|
|
|
|
tag_c,
|
|
|
|
d,
|
|
|
|
spread_d,
|
|
|
|
tag_d,
|
|
|
|
word_lo,
|
|
|
|
spread_word_lo,
|
|
|
|
word_hi,
|
|
|
|
spread_word_hi,
|
|
|
|
)
|
|
|
|
.0
|
|
|
|
});
|
|
|
|
|
|
|
|
// s_upper_sigma_0 on abcd words
|
|
|
|
// (2, 11, 9, 10)-bit chunks
|
|
|
|
meta.create_gate("s_upper_sigma_0", |meta| {
|
|
|
|
let s_upper_sigma_0 = meta.query_fixed(s_upper_sigma_0, Rotation::cur());
|
|
|
|
let spread_r0_even = meta.query_advice(a_2, Rotation::prev());
|
|
|
|
let spread_r0_odd = meta.query_advice(a_2, Rotation::cur());
|
|
|
|
let spread_r1_even = meta.query_advice(a_2, Rotation::next());
|
|
|
|
let spread_r1_odd = meta.query_advice(a_3, Rotation::cur());
|
|
|
|
|
|
|
|
let spread_a = meta.query_advice(a_3, Rotation::next());
|
|
|
|
let spread_b = meta.query_advice(a_5, Rotation::cur());
|
|
|
|
let spread_c_lo = meta.query_advice(a_3, Rotation::prev());
|
|
|
|
let spread_c_mid = meta.query_advice(a_4, Rotation::prev());
|
|
|
|
let spread_c_hi = meta.query_advice(a_4, Rotation::next());
|
|
|
|
let spread_d = meta.query_advice(a_4, Rotation::cur());
|
|
|
|
|
|
|
|
CompressionGate::s_upper_sigma_0(
|
|
|
|
s_upper_sigma_0,
|
|
|
|
spread_r0_even,
|
|
|
|
spread_r0_odd,
|
|
|
|
spread_r1_even,
|
|
|
|
spread_r1_odd,
|
|
|
|
spread_a,
|
|
|
|
spread_b,
|
|
|
|
spread_c_lo,
|
|
|
|
spread_c_mid,
|
|
|
|
spread_c_hi,
|
|
|
|
spread_d,
|
|
|
|
)
|
|
|
|
.0
|
|
|
|
});
|
|
|
|
|
|
|
|
// s_upper_sigma_1 on efgh words
|
|
|
|
// (6, 5, 14, 7)-bit chunks
|
|
|
|
meta.create_gate("s_upper_sigma_1", |meta| {
|
|
|
|
let s_upper_sigma_1 = meta.query_fixed(s_upper_sigma_1, Rotation::cur());
|
|
|
|
let spread_r0_even = meta.query_advice(a_2, Rotation::prev());
|
|
|
|
let spread_r0_odd = meta.query_advice(a_2, Rotation::cur());
|
|
|
|
let spread_r1_even = meta.query_advice(a_2, Rotation::next());
|
|
|
|
let spread_r1_odd = meta.query_advice(a_3, Rotation::cur());
|
|
|
|
let spread_a_lo = meta.query_advice(a_3, Rotation::next());
|
|
|
|
let spread_a_hi = meta.query_advice(a_4, Rotation::next());
|
|
|
|
let spread_b_lo = meta.query_advice(a_3, Rotation::prev());
|
|
|
|
let spread_b_hi = meta.query_advice(a_4, Rotation::prev());
|
|
|
|
let spread_c = meta.query_advice(a_5, Rotation::cur());
|
|
|
|
let spread_d = meta.query_advice(a_4, Rotation::cur());
|
|
|
|
|
|
|
|
CompressionGate::s_upper_sigma_1(
|
|
|
|
s_upper_sigma_1,
|
|
|
|
spread_r0_even,
|
|
|
|
spread_r0_odd,
|
|
|
|
spread_r1_even,
|
|
|
|
spread_r1_odd,
|
|
|
|
spread_a_lo,
|
|
|
|
spread_a_hi,
|
|
|
|
spread_b_lo,
|
|
|
|
spread_b_hi,
|
|
|
|
spread_c,
|
|
|
|
spread_d,
|
|
|
|
)
|
|
|
|
.0
|
|
|
|
});
|
|
|
|
|
|
|
|
// s_ch on efgh words
|
|
|
|
// First part of choice gate on (E, F, G), E ∧ F
|
|
|
|
meta.create_gate("s_ch", |meta| {
|
|
|
|
let s_ch = meta.query_fixed(s_ch, Rotation::cur());
|
|
|
|
let spread_p0_even = meta.query_advice(a_2, Rotation::prev());
|
|
|
|
let spread_p0_odd = meta.query_advice(a_2, Rotation::cur());
|
|
|
|
let spread_p1_even = meta.query_advice(a_2, Rotation::next());
|
|
|
|
let spread_p1_odd = meta.query_advice(a_3, Rotation::cur());
|
|
|
|
let spread_e_lo = meta.query_advice(a_3, Rotation::prev());
|
|
|
|
let spread_e_hi = meta.query_advice(a_4, Rotation::prev());
|
|
|
|
let spread_f_lo = meta.query_advice(a_3, Rotation::next());
|
|
|
|
let spread_f_hi = meta.query_advice(a_4, Rotation::next());
|
|
|
|
|
|
|
|
CompressionGate::s_ch(
|
|
|
|
s_ch,
|
|
|
|
spread_p0_even,
|
|
|
|
spread_p0_odd,
|
|
|
|
spread_p1_even,
|
|
|
|
spread_p1_odd,
|
|
|
|
spread_e_lo,
|
|
|
|
spread_e_hi,
|
|
|
|
spread_f_lo,
|
|
|
|
spread_f_hi,
|
|
|
|
)
|
|
|
|
.0
|
|
|
|
});
|
|
|
|
|
|
|
|
// s_ch_neg on efgh words
|
|
|
|
// Second part of Choice gate on (E, F, G), ¬E ∧ G
|
|
|
|
meta.create_gate("s_ch_neg", |meta| {
|
|
|
|
let s_ch_neg = meta.query_fixed(s_ch_neg, Rotation::cur());
|
|
|
|
let spread_q0_even = meta.query_advice(a_2, Rotation::prev());
|
|
|
|
let spread_q0_odd = meta.query_advice(a_2, Rotation::cur());
|
|
|
|
let spread_q1_even = meta.query_advice(a_2, Rotation::next());
|
|
|
|
let spread_q1_odd = meta.query_advice(a_3, Rotation::cur());
|
|
|
|
let spread_e_lo = meta.query_advice(a_5, Rotation::prev());
|
|
|
|
let spread_e_hi = meta.query_advice(a_5, Rotation::cur());
|
|
|
|
let spread_e_neg_lo = meta.query_advice(a_3, Rotation::prev());
|
|
|
|
let spread_e_neg_hi = meta.query_advice(a_4, Rotation::prev());
|
|
|
|
let spread_g_lo = meta.query_advice(a_3, Rotation::next());
|
|
|
|
let spread_g_hi = meta.query_advice(a_4, Rotation::next());
|
|
|
|
|
|
|
|
CompressionGate::s_ch_neg(
|
|
|
|
s_ch_neg,
|
|
|
|
spread_q0_even,
|
|
|
|
spread_q0_odd,
|
|
|
|
spread_q1_even,
|
|
|
|
spread_q1_odd,
|
|
|
|
spread_e_lo,
|
|
|
|
spread_e_hi,
|
|
|
|
spread_e_neg_lo,
|
|
|
|
spread_e_neg_hi,
|
|
|
|
spread_g_lo,
|
|
|
|
spread_g_hi,
|
|
|
|
)
|
|
|
|
.0
|
|
|
|
});
|
|
|
|
|
|
|
|
// s_maj on abcd words
|
|
|
|
meta.create_gate("s_maj", |meta| {
|
|
|
|
let s_maj = meta.query_fixed(s_maj, Rotation::cur());
|
|
|
|
let spread_m0_even = meta.query_advice(a_2, Rotation::prev());
|
|
|
|
let spread_m0_odd = meta.query_advice(a_2, Rotation::cur());
|
|
|
|
let spread_m1_even = meta.query_advice(a_2, Rotation::next());
|
|
|
|
let spread_m1_odd = meta.query_advice(a_3, Rotation::cur());
|
|
|
|
let spread_a_lo = meta.query_advice(a_4, Rotation::prev());
|
|
|
|
let spread_a_hi = meta.query_advice(a_5, Rotation::prev());
|
|
|
|
let spread_b_lo = meta.query_advice(a_4, Rotation::cur());
|
|
|
|
let spread_b_hi = meta.query_advice(a_5, Rotation::cur());
|
|
|
|
let spread_c_lo = meta.query_advice(a_4, Rotation::next());
|
|
|
|
let spread_c_hi = meta.query_advice(a_5, Rotation::next());
|
|
|
|
|
|
|
|
CompressionGate::s_maj(
|
|
|
|
s_maj,
|
|
|
|
spread_m0_even,
|
|
|
|
spread_m0_odd,
|
|
|
|
spread_m1_even,
|
|
|
|
spread_m1_odd,
|
|
|
|
spread_a_lo,
|
|
|
|
spread_a_hi,
|
|
|
|
spread_b_lo,
|
|
|
|
spread_b_hi,
|
|
|
|
spread_c_lo,
|
|
|
|
spread_c_hi,
|
|
|
|
)
|
|
|
|
.0
|
|
|
|
});
|
|
|
|
|
|
|
|
// s_h_prime to compute H' = H + Ch(E, F, G) + s_upper_sigma_1(E) + K + W
|
|
|
|
meta.create_gate("s_h_prime", |meta| {
|
|
|
|
let s_h_prime = meta.query_fixed(s_h_prime, Rotation::cur());
|
|
|
|
let h_prime_lo = meta.query_advice(a_7, Rotation::next());
|
|
|
|
let h_prime_hi = meta.query_advice(a_8, Rotation::next());
|
|
|
|
let h_prime_carry = meta.query_advice(a_9, Rotation::next());
|
|
|
|
let sigma_e_lo = meta.query_advice(a_4, Rotation::cur());
|
|
|
|
let sigma_e_hi = meta.query_advice(a_5, Rotation::cur());
|
|
|
|
let ch_lo = meta.query_advice(a_1, Rotation::cur());
|
|
|
|
let ch_hi = meta.query_advice(a_6, Rotation::next());
|
|
|
|
let ch_neg_lo = meta.query_advice(a_5, Rotation::prev());
|
|
|
|
let ch_neg_hi = meta.query_advice(a_5, Rotation::next());
|
|
|
|
let h_lo = meta.query_advice(a_7, Rotation::prev());
|
|
|
|
let h_hi = meta.query_advice(a_7, Rotation::cur());
|
|
|
|
let k_lo = meta.query_advice(a_6, Rotation::prev());
|
|
|
|
let k_hi = meta.query_advice(a_6, Rotation::cur());
|
|
|
|
let w_lo = meta.query_advice(a_8, Rotation::prev());
|
|
|
|
let w_hi = meta.query_advice(a_8, Rotation::cur());
|
|
|
|
|
|
|
|
CompressionGate::s_h_prime(
|
|
|
|
s_h_prime,
|
|
|
|
h_prime_lo,
|
|
|
|
h_prime_hi,
|
|
|
|
h_prime_carry,
|
|
|
|
sigma_e_lo,
|
|
|
|
sigma_e_hi,
|
|
|
|
ch_lo,
|
|
|
|
ch_hi,
|
|
|
|
ch_neg_lo,
|
|
|
|
ch_neg_hi,
|
|
|
|
h_lo,
|
|
|
|
h_hi,
|
|
|
|
k_lo,
|
|
|
|
k_hi,
|
|
|
|
w_lo,
|
|
|
|
w_hi,
|
|
|
|
)
|
|
|
|
.0
|
|
|
|
});
|
|
|
|
|
|
|
|
// s_a_new
|
|
|
|
meta.create_gate("s_a_new", |meta| {
|
|
|
|
let s_a_new = meta.query_fixed(s_a_new, Rotation::cur());
|
|
|
|
let a_new_lo = meta.query_advice(a_8, Rotation::cur());
|
|
|
|
let a_new_hi = meta.query_advice(a_8, Rotation::next());
|
|
|
|
let a_new_carry = meta.query_advice(a_9, Rotation::cur());
|
|
|
|
let sigma_a_lo = meta.query_advice(a_6, Rotation::cur());
|
|
|
|
let sigma_a_hi = meta.query_advice(a_6, Rotation::next());
|
|
|
|
let maj_abc_lo = meta.query_advice(a_1, Rotation::cur());
|
|
|
|
let maj_abc_hi = meta.query_advice(a_3, Rotation::prev());
|
|
|
|
let h_prime_lo = meta.query_advice(a_7, Rotation::prev());
|
|
|
|
let h_prime_hi = meta.query_advice(a_8, Rotation::prev());
|
|
|
|
|
|
|
|
CompressionGate::s_a_new(
|
|
|
|
s_a_new,
|
|
|
|
a_new_lo,
|
|
|
|
a_new_hi,
|
|
|
|
a_new_carry,
|
|
|
|
sigma_a_lo,
|
|
|
|
sigma_a_hi,
|
|
|
|
maj_abc_lo,
|
|
|
|
maj_abc_hi,
|
|
|
|
h_prime_lo,
|
|
|
|
h_prime_hi,
|
|
|
|
)
|
|
|
|
.0
|
|
|
|
});
|
|
|
|
|
|
|
|
// s_e_new
|
|
|
|
meta.create_gate("s_e_new", |meta| {
|
|
|
|
let s_e_new = meta.query_fixed(s_e_new, Rotation::cur());
|
|
|
|
let e_new_lo = meta.query_advice(a_8, Rotation::cur());
|
|
|
|
let e_new_hi = meta.query_advice(a_8, Rotation::next());
|
|
|
|
let e_new_carry = meta.query_advice(a_9, Rotation::next());
|
|
|
|
let d_lo = meta.query_advice(a_7, Rotation::cur());
|
|
|
|
let d_hi = meta.query_advice(a_7, Rotation::next());
|
|
|
|
let h_prime_lo = meta.query_advice(a_7, Rotation::prev());
|
|
|
|
let h_prime_hi = meta.query_advice(a_8, Rotation::prev());
|
|
|
|
|
|
|
|
CompressionGate::s_e_new(
|
|
|
|
s_e_new,
|
|
|
|
e_new_lo,
|
|
|
|
e_new_hi,
|
|
|
|
e_new_carry,
|
|
|
|
d_lo,
|
|
|
|
d_hi,
|
|
|
|
h_prime_lo,
|
|
|
|
h_prime_hi,
|
|
|
|
)
|
|
|
|
.0
|
|
|
|
});
|
|
|
|
|
|
|
|
// s_digest for final round
|
|
|
|
meta.create_gate("s_digest", |meta| {
|
|
|
|
let s_digest = meta.query_fixed(s_digest, Rotation::cur());
|
|
|
|
let lo_0 = meta.query_advice(a_3, Rotation::cur());
|
|
|
|
let hi_0 = meta.query_advice(a_4, Rotation::cur());
|
|
|
|
let word_0 = meta.query_advice(a_5, Rotation::cur());
|
|
|
|
let lo_1 = meta.query_advice(a_6, Rotation::cur());
|
|
|
|
let hi_1 = meta.query_advice(a_7, Rotation::cur());
|
|
|
|
let word_1 = meta.query_advice(a_8, Rotation::cur());
|
|
|
|
let lo_2 = meta.query_advice(a_3, Rotation::next());
|
|
|
|
let hi_2 = meta.query_advice(a_4, Rotation::next());
|
|
|
|
let word_2 = meta.query_advice(a_5, Rotation::next());
|
|
|
|
let lo_3 = meta.query_advice(a_6, Rotation::next());
|
|
|
|
let hi_3 = meta.query_advice(a_7, Rotation::next());
|
|
|
|
let word_3 = meta.query_advice(a_8, Rotation::next());
|
|
|
|
|
|
|
|
CompressionGate::s_digest(
|
|
|
|
s_digest, lo_0, hi_0, word_0, lo_1, hi_1, word_1, lo_2, hi_2, word_2, lo_3, hi_3,
|
|
|
|
word_3,
|
|
|
|
)
|
|
|
|
.0
|
|
|
|
});
|
2021-01-08 00:10:55 -08:00
|
|
|
|
|
|
|
Compression {
|
|
|
|
lookup,
|
|
|
|
message_schedule,
|
|
|
|
extras,
|
|
|
|
s_ch,
|
|
|
|
s_ch_neg,
|
|
|
|
s_maj,
|
|
|
|
s_h_prime,
|
|
|
|
s_a_new,
|
|
|
|
s_e_new,
|
|
|
|
s_upper_sigma_0,
|
|
|
|
s_upper_sigma_1,
|
|
|
|
s_decompose_abcd,
|
|
|
|
s_decompose_efgh,
|
|
|
|
s_digest,
|
|
|
|
perm,
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Initialize compression with a constant Initialization Vector of 32-byte words.
|
|
|
|
/// Returns an initialized state.
|
|
|
|
pub(super) fn initialize_with_iv<F: FieldExt>(
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&self,
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layouter: &mut impl Layouter<Table16Chip<F>>,
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init_state: [u32; STATE],
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) -> Result<State, Error> {
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let mut new_state = State::empty_state();
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todo!()
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}
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/// Initialize compression with some initialized state. This could be a state
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/// output from a previous compression round.
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pub(super) fn initialize_with_state<F: FieldExt>(
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&self,
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layouter: &mut impl Layouter<Table16Chip<F>>,
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|
init_state: State,
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|
) -> Result<State, Error> {
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let mut new_state = State::empty_state();
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todo!()
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}
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/// Given an initialized state and a message schedule, perform 64 compression rounds.
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pub(super) fn compress<F: FieldExt>(
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|
&self,
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|
layouter: &mut impl Layouter<Table16Chip<F>>,
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|
initialized_state: State,
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|
w_halves: [(CellValue16, CellValue16); ROUNDS],
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|
) -> Result<State, Error> {
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|
let mut state = State::empty_state();
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|
todo!()
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|
}
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/// After the final round, convert the state into the final digest.
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|
pub(super) fn digest<F: FieldExt>(
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|
&self,
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|
|
layouter: &mut impl Layouter<Table16Chip<F>>,
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|
state: State,
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|
) -> Result<[BlockWord; DIGEST_SIZE], Error> {
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|
let mut digest = [BlockWord::new(0); DIGEST_SIZE];
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|
|
todo!()
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|
}
|
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|
|
pub(super) fn empty_configure<F: FieldExt>(
|
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|
|
meta: &mut ConstraintSystem<F>,
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|
|
lookup: SpreadInputs,
|
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|
|
message_schedule: Column<Advice>,
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|
|
extras: [Column<Advice>; 6],
|
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|
|
perm: Permutation,
|
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|
|
) -> Self {
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|
|
let s_ch = meta.fixed_column();
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|
let s_ch_neg = meta.fixed_column();
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|
let s_maj = meta.fixed_column();
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|
let s_h_prime = meta.fixed_column();
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|
let s_a_new = meta.fixed_column();
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|
let s_e_new = meta.fixed_column();
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|
|
let s_upper_sigma_0 = meta.fixed_column();
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|
let s_upper_sigma_1 = meta.fixed_column();
|
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|
|
|
|
|
|
// Decomposition gate for AbcdVar
|
|
|
|
let s_decompose_abcd = meta.fixed_column();
|
|
|
|
// Decomposition gate for EfghVar
|
|
|
|
let s_decompose_efgh = meta.fixed_column();
|
|
|
|
|
|
|
|
let s_digest = meta.fixed_column();
|
|
|
|
|
|
|
|
Compression {
|
|
|
|
lookup,
|
|
|
|
message_schedule,
|
|
|
|
extras,
|
|
|
|
s_ch,
|
|
|
|
s_ch_neg,
|
|
|
|
s_maj,
|
|
|
|
s_h_prime,
|
|
|
|
s_a_new,
|
|
|
|
s_e_new,
|
|
|
|
s_upper_sigma_0,
|
|
|
|
s_upper_sigma_1,
|
|
|
|
s_decompose_abcd,
|
|
|
|
s_decompose_efgh,
|
|
|
|
s_digest,
|
|
|
|
perm,
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|