use super::super::{RoundWordDense, RoundWordSpread, StateWord, STATE};
use super::{compression_util::*, CompressionConfig, State};
use halo2::{arithmetic::FieldExt, circuit::Region, plonk::Error};
impl CompressionConfig {
#[allow(clippy::many_single_char_names)]
pub fn initialize_iv<F: FieldExt>(
&self,
region: &mut Region<'_, F>,
iv: [u32; STATE],
) -> Result<State, Error> {
let a_7 = self.extras[3];
let idx = -1;
let e = self.decompose_e(region, idx, iv[4])?;
let f = self.decompose_f(region, idx, iv[5])?;
let g = self.decompose_g(region, idx, iv[6])?;
let h_row = get_h_row(idx);
let h_dense = self.assign_word_halves_dense(region, h_row, a_7, h_row + 1, a_7, iv[7])?;
let h = RoundWordDense::new(h_dense);
let a = self.decompose_a(region, idx, iv[0])?;
let b = self.decompose_b(region, idx, iv[1])?;
let c = self.decompose_c(region, idx, iv[2])?;
let d_row = get_d_row(idx);
let d_dense = self.assign_word_halves_dense(region, d_row, a_7, d_row + 1, a_7, iv[3])?;
let d = RoundWordDense::new(d_dense);
Ok(State::new(
StateWord::A(a),
StateWord::B(b),
StateWord::C(c),
StateWord::D(d),
StateWord::E(e),
StateWord::F(f),
StateWord::G(g),
StateWord::H(h),
))
}
#[allow(clippy::many_single_char_names)]
pub fn initialize_state<F: FieldExt>(
&self,
region: &mut Region<'_, F>,
state: State,
) -> Result<State, Error> {
let a_7 = self.extras[3];
let (a, b, c, d, e, f, g, h) = match_state(state);
let idx = -1;
let e = val_from_dense_halves(e.dense_halves);
let e = self.decompose_e(region, idx, e)?;
let f = val_from_dense_halves(f.dense_halves);
let f = self.decompose_f(region, idx, f)?;
let g = val_from_dense_halves(g.dense_halves);
let g = self.decompose_g(region, idx, g)?;
let h = val_from_dense_halves(h.dense_halves);
let h_row = get_h_row(idx);
let h_dense = self.assign_word_halves_dense(region, h_row, a_7, h_row + 1, a_7, h)?;
let h = RoundWordDense::new(h_dense);
let a = val_from_dense_halves(a.dense_halves);
let a = self.decompose_a(region, idx, a)?;
let b = val_from_dense_halves(b.dense_halves);
let b = self.decompose_b(region, idx, b)?;
let c = val_from_dense_halves(c.dense_halves);
let c = self.decompose_c(region, idx, c)?;
let d = val_from_dense_halves(d.dense_halves);
let d_row = get_d_row(idx);
let d_dense = self.assign_word_halves_dense(region, d_row, a_7, d_row + 1, a_7, d)?;
let d = RoundWordDense::new(d_dense);
Ok(State::new(
StateWord::A(a),
StateWord::B(b),
StateWord::C(c),
StateWord::D(d),
StateWord::E(e),
StateWord::F(f),
StateWord::G(g),
StateWord::H(h),
))
}
fn decompose_b<F: FieldExt>(
&self,
region: &mut Region<'_, F>,
idx: i32,
b_val: u32,
) -> Result<RoundWordSpread, Error> {
let row = get_decompose_b_row(idx);
let (dense_halves, spread_halves) = self.assign_word_halves(region, row, b_val)?;
self.decompose_abcd(region, row, b_val)?;
Ok(RoundWordSpread::new(dense_halves, spread_halves))
}
fn decompose_c<F: FieldExt>(
&self,
region: &mut Region<'_, F>,
idx: i32,
c_val: u32,
) -> Result<RoundWordSpread, Error> {
let row = get_decompose_c_row(idx);
let (dense_halves, spread_halves) = self.assign_word_halves(region, row, c_val)?;
self.decompose_abcd(region, row, c_val)?;
Ok(RoundWordSpread::new(dense_halves, spread_halves))
}
fn decompose_f<F: FieldExt>(
&self,
region: &mut Region<'_, F>,
idx: i32,
f_val: u32,
) -> Result<RoundWordSpread, Error> {
let row = get_decompose_f_row(idx);
let (dense_halves, spread_halves) = self.assign_word_halves(region, row, f_val)?;
self.decompose_efgh(region, row, f_val)?;
Ok(RoundWordSpread::new(dense_halves, spread_halves))
}
fn decompose_g<F: FieldExt>(
&self,
region: &mut Region<'_, F>,
idx: i32,
g_val: u32,
) -> Result<RoundWordSpread, Error> {
let row = get_decompose_g_row(idx);
let (dense_halves, spread_halves) = self.assign_word_halves(region, row, g_val)?;
self.decompose_efgh(region, row, g_val)?;
Ok(RoundWordSpread::new(dense_halves, spread_halves))
}
}