Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Keccakf32Memory: use compute_from instead of provide_value #2553

Merged
merged 6 commits into from
Mar 18, 2025
Merged

Keccakf32Memory: use compute_from instead of provide_value #2553

Changes from 1 commit
Commits
Show all changes
6 commits
Select commit Hold shift + click to select a range
4c5e3fd
Keccakf32Memory: use compute_from instead of provide_value
georgwiese Mar 14, 2025
1c15647
Only require the elements actually needed
georgwiese Mar 14, 2025
b0e93ac
Use compute_from_multi
georgwiese Mar 16, 2025
4616435
Hard-code lengths
georgwiese Mar 16, 2025
f14d12c
Remove unnecessary prover functions
georgwiese Mar 18, 2025
d00db1b
Reintroduce array::len calls for clarity
georgwiese Mar 18, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
71 changes: 43 additions & 28 deletions std/machines/hash/keccakf32_memory.asm
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,7 @@ use std::convert::fe;
use std::prelude::set_hint;
use std::prelude::Query;
use std::prover::eval;
use std::prover::provide_value;
use std::prover::compute_from;
use std::machines::large_field::memory::Memory;

machine Keccakf32Memory(mem: Memory) with
Expand Down Expand Up @@ -592,10 +592,10 @@ machine Keccakf32Memory(mem: Memory) with
// }
// }

let query_c: int, int, int -> int = query |x, limb, bit_in_limb|
let query_c: int, int, int, fe[] -> int = query |x, limb, bit_in_limb, a|
utils::fold(
5,
|y| (int(eval(a[y * 10 + x * 2 + limb])) >> bit_in_limb) & 0x1,
|y| (int(a[y * 10 + x * 2 + limb]) >> bit_in_limb) & 0x1,
0,
|acc, e| acc ^ e
);
Expand All @@ -607,7 +607,7 @@ machine Keccakf32Memory(mem: Memory) with
let limb = z / 32;
let bit_in_limb = z % 32;

provide_value(c_i, row, fe(query_c(x, limb, bit_in_limb)));
compute_from(c_i, row, a, |a| fe(query_c(x, limb, bit_in_limb, a)))
});
};

Expand All @@ -622,17 +622,17 @@ machine Keccakf32Memory(mem: Memory) with
// }
// }

let query_c_prime: int, int -> int = query |x, z|
int(eval(c[x * 64 + z])) ^
int(eval(c[((x + 4) % 5) * 64 + z])) ^
int(eval(c[((x + 1) % 5) * 64 + (z + 63) % 64]));
let query_c_prime: int, int, fe[] -> int = query |x, z, c|
int(c[x * 64 + z]) ^
int(c[((x + 4) % 5) * 64 + z]) ^
int(c[((x + 1) % 5) * 64 + (z + 63) % 64]);

query |row| {
let _ = array::map_enumerated(c_prime, |i, c_i| {
let x = i / 64;
let z = i % 64;

provide_value(c_i, row, fe(query_c_prime(x, z)));
compute_from(c_i, row, c, |c| fe(query_c_prime(x, z, c)));
});
};

Expand All @@ -652,10 +652,6 @@ machine Keccakf32Memory(mem: Memory) with
// }
// }

let query_a_prime: int, int, int, int, int -> int = query |x, y, z, limb, bit_in_limb|
((int(eval(a[y * 10 + x * 2 + limb])) >> bit_in_limb) & 0x1) ^
int(eval(c[x * 64 + z])) ^
int(eval(c_prime[x * 64 + z]));

query |row| {
let _ = array::map_enumerated(a_prime, |i, a_i| {
Expand All @@ -665,7 +661,14 @@ machine Keccakf32Memory(mem: Memory) with
let limb = z / 32;
let bit_in_limb = z % 32;

provide_value(a_i, row, fe(query_a_prime(x, y, z, limb, bit_in_limb)));
let a_elem = a[y * 10 + x * 2 + limb];
let c_elem = c[x * 64 + z];
let c_prime_elem = c_prime[x * 64 + z];

compute_from(
a_i, row, [a_elem, c_elem, c_prime_elem],
|inputs| fe(((int(inputs[0]) >> bit_in_limb) & 0x1) ^ int(inputs[1]) ^ int(inputs[2]))
);
});
};

Expand All @@ -687,13 +690,23 @@ machine Keccakf32Memory(mem: Memory) with
// }
// }

let query_a_prime_prime: int, int, int -> int = query |x, y, limb|

let b_index: int, int, int -> int = |x, y, z| {
let a: int = (x + 3 * y) % 5;
let rot: int = R[a * 5 + x]; // b = x
x * 320 + a * 64 + (z + 64 - rot) % 64
};
let andn_int: int, int -> int = |a, b| (1 - a) * b;

let query_a_prime_prime: int, int, int, fe[] -> int = query |x, y, limb, a_prime|
utils::fold(
32,
|z|
int(eval(b(x, y, (limb + 1) * 32 - 1 - z))) ^
int(eval(andn(b((x + 1) % 5, y, (limb + 1) * 32 - 1 - z),
b((x + 2) % 5, y, (limb + 1) * 32 - 1 - z)))),
|z|
int(a_prime[b_index(x, y, (limb + 1) * 32 - 1 - z)]) ^
int(andn_int(
int(a_prime[b_index((x + 1) % 5, y, (limb + 1) * 32 - 1 - z)]),
int(a_prime[b_index((x + 2) % 5, y, (limb + 1) * 32 - 1 - z)])
)),
0,
|acc, e| acc * 2 + e
);
Expand All @@ -704,7 +717,7 @@ machine Keccakf32Memory(mem: Memory) with
let x = (i / 2) % 5;
let limb = i % 2;

provide_value(a_i, row, fe(query_a_prime_prime(x, y, limb)));
compute_from(a_i, row, a_prime, |a_prime| fe(query_a_prime_prime(x, y, limb, a_prime)));
});
};

Expand All @@ -730,10 +743,11 @@ machine Keccakf32Memory(mem: Memory) with
let limb = i / 32;
let bit_in_limb = i % 32;

provide_value(
compute_from(
a_i,
row,
fe((int(eval(a_prime_prime[limb])) >> bit_in_limb) & 0x1)
row,
a_prime_prime,
|a_prime_prime| fe((int(a_prime_prime[limb]) >> bit_in_limb) & 0x1)
);
});
};
Expand All @@ -745,16 +759,17 @@ machine Keccakf32Memory(mem: Memory) with
// F::from_canonical_u16(row.a_prime_prime[0][0][limb].as_canonical_u64() as u16 ^ rc_lo);
// }

let query_a_prime_prime_prime_0_0_limbs: int, int -> int = query |round, limb|
int(eval(a_prime_prime[limb])) ^
let query_a_prime_prime_prime_0_0_limbs: int, int, fe[] -> int = query |round, limb, a_prime_prime|
int(a_prime_prime[limb]) ^
((RC[round] >> (limb * 32)) & 0xffffffff);

query |row| {
let _ = array::new(2, |limb| {
provide_value(
compute_from(
a_prime_prime_prime_0_0_limbs[limb],
row,
fe(query_a_prime_prime_prime_0_0_limbs(row % NUM_ROUNDS, limb)
row,
a_prime_prime,
|a_prime_prime| fe(query_a_prime_prime_prime_0_0_limbs(row % NUM_ROUNDS, limb, a_prime_prime)
));
});
};
Expand Down
Loading