oarust 0.8.6

GPU-first semantic computing engine written in Rust
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57

// Generated by tool/gen/fn/generate.py; do not edit.
// schema_sha256=787c413dea5e27098bec8d4778942ded65ed94c4cfffda39e20fac88581b05f1
// ML-DSA-44 batch external precomputed-digest verification with a shared context.
// Experimental public-only route; physical-device qualification remains separate.
// FIPS 204 Algorithms 5/8. New implementation; OA historical shader was a stub.
import attributes;
import mldsa_verification;
import shake;

struct PushConstants {
	uint input_index;
	uint offsets_index;
	uint lengths_index;
	uint sigs_index;
	uint pks_index;
	uint results_index;
	uint batch_size;
	uint message_bytes;
	uint context_offset;
	uint context_length;
	uint algorithm;
};
[[vk::push_constant]] PushConstants push;
[[vk::binding(0, 0)]] RWByteAddressBuffer storage_buffers[];

[kernel_name("ml_dsa_44_verify_prehashed")]
[domain("cryptography")]
[variant("generic")]
[dtype("u8")]
[status("experimental")]
[shader("compute")]
[numthreads(1, 1, 1)]
void main(uint3 dispatch_thread_id : SV_DispatchThreadID) {
	uint idx = dispatch_thread_id.x;
	if (idx >= push.batch_size || idx > 0xffffffffu / 4u) return;
	uint output_base = idx * 4u;
	if (!pqc_buffer_range(storage_buffers[push.results_index], output_base, 4u)) return;
	storage_buffers[push.results_index].Store(output_base, 0u);
	if (!pqc_buffer_range(storage_buffers[push.offsets_index], output_base, 4u)
		|| !pqc_buffer_range(storage_buffers[push.lengths_index], output_base, 4u)
		|| idx > 0xffffffffu / 1312u
		|| idx > 0xffffffffu / 2420u) return;
	uint offset = storage_buffers[push.offsets_index].Load(output_base);
	uint length = storage_buffers[push.lengths_index].Load(output_base);
	// Allocation padding is not part of the semantic message buffer.
	if (offset > push.message_bytes || length > push.message_bytes - offset
		|| push.context_length > 255u
		|| push.context_offset > push.message_bytes
		|| push.context_length > push.message_bytes - push.context_offset) return;
	bool valid = mldsa_verify_prehashed(
		44u,
		storage_buffers[push.pks_index], idx * 1312u, 1312u,
		storage_buffers[push.sigs_index], idx * 2420u, 2420u,
		storage_buffers[push.input_index], offset, length,
		storage_buffers[push.input_index], push.context_offset, push.context_length, push.algorithm);
	storage_buffers[push.results_index].Store(output_base, valid ? 1u : 0u);
}