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tree.rs: Use 2 as uncommitted leaf and check against test vectors.

This commit is contained in:
therealyingtong 2021-06-11 19:03:14 +08:00
parent 380128ed49
commit 0e9726ae69
3 changed files with 195 additions and 6 deletions
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1
src/test_vectors.rs
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@ -1 +1,2 @@
pub(crate) mod commitment_tree;
pub(crate) mod keys;

176
src/test_vectors/commitment_tree.rs Normal file
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@ -0,0 +1,176 @@
pub(crate) struct TestVector {
pub empty_roots: [[u8; 32]; 33],
}
pub(crate) fn test_vectors() -> TestVector {
// From https://github.com/zcash-hackworks/zcash-test-vectors/blob/master/orchard_empty_roots.py
TestVector {
empty_roots: [
[
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
],
[
0xd1, 0xab, 0x25, 0x07, 0xc8, 0x09, 0xc2, 0x71, 0x3c, 0x00, 0x0f, 0x52, 0x5e, 0x9f,
0xbd, 0xcb, 0x06, 0xc9, 0x58, 0x38, 0x4e, 0x51, 0xb9, 0xcc, 0x7f, 0x79, 0x2d, 0xde,
0x6c, 0x97, 0xf4, 0x11,
],
[
0xc7, 0x41, 0x3f, 0x46, 0x14, 0xcd, 0x64, 0x04, 0x3a, 0xbb, 0xab, 0x7c, 0xc1, 0x09,
0x5c, 0x9b, 0xb1, 0x04, 0x23, 0x1c, 0xea, 0x89, 0xe2, 0xc3, 0xe0, 0xdf, 0x83, 0x76,
0x95, 0x56, 0xd0, 0x30,
],
[
0x21, 0x11, 0xfc, 0x39, 0x77, 0x53, 0xe5, 0xfd, 0x50, 0xec, 0x74, 0x81, 0x6d, 0xf2,
0x7d, 0x6a, 0xda, 0x7e, 0xd2, 0xa9, 0xac, 0x38, 0x16, 0xaa, 0xb2, 0x57, 0x3c, 0x8f,
0xac, 0x79, 0x42, 0x04,
],
[
0x80, 0x6a, 0xfb, 0xfe, 0xb4, 0x5c, 0x64, 0xd4, 0xf2, 0x38, 0x4c, 0x51, 0xef, 0xf3,
0x07, 0x64, 0xb8, 0x45, 0x99, 0xae, 0x56, 0xa7, 0xab, 0x3d, 0x4a, 0x46, 0xd9, 0xce,
0x3a, 0xea, 0xb4, 0x31,
],
[
0x87, 0x3e, 0x41, 0x57, 0xf2, 0xc0, 0xf0, 0xc6, 0x45, 0xe8, 0x99, 0x36, 0x00, 0x69,
0xfc, 0xc9, 0xd2, 0xed, 0x9b, 0xc1, 0x1b, 0xf5, 0x98, 0x27, 0xaf, 0x02, 0x30, 0xed,
0x52, 0xed, 0xab, 0x18,
],
[
0x27, 0xab, 0x13, 0x20, 0x95, 0x3a, 0xe1, 0xad, 0x70, 0xc8, 0xc1, 0x5a, 0x12, 0x53,
0xa0, 0xa8, 0x6f, 0xbc, 0x8a, 0x0a, 0xa3, 0x6a, 0x84, 0x20, 0x72, 0x93, 0xf8, 0xa4,
0x95, 0xff, 0xc4, 0x02,
],
[
0x4e, 0x14, 0x56, 0x3d, 0xf1, 0x91, 0xa2, 0xa6, 0x5b, 0x4b, 0x37, 0x11, 0x3b, 0x52,
0x30, 0x68, 0x05, 0x55, 0x05, 0x1b, 0x22, 0xd7, 0x4a, 0x8e, 0x1f, 0x1d, 0x70, 0x6f,
0x90, 0xf3, 0x13, 0x3b,
],
[
0xb3, 0xbb, 0xe4, 0xf9, 0x93, 0xd1, 0x8a, 0x0f, 0x4e, 0xb7, 0xf4, 0x17, 0x4b, 0x1d,
0x85, 0x55, 0xce, 0x33, 0x96, 0x85, 0x5d, 0x04, 0x67, 0x6f, 0x1c, 0xe4, 0xf0, 0x6d,
0xda, 0x07, 0x37, 0x1f,
],
[
0x4e, 0xf5, 0xbd, 0xe9, 0xc6, 0xf0, 0xd7, 0x6a, 0xeb, 0x9e, 0x27, 0xe9, 0x3f, 0xba,
0x28, 0xc6, 0x79, 0xdf, 0xcb, 0x99, 0x1c, 0xbc, 0xb8, 0x39, 0x5a, 0x2b, 0x57, 0x92,
0x4c, 0xbd, 0x17, 0x0e,
],
[
0xa3, 0xc0, 0x25, 0x68, 0xac, 0xeb, 0xf5, 0xca, 0x1e, 0xc3, 0x0d, 0x6a, 0x7d, 0x7c,
0xd2, 0x17, 0xa4, 0x7d, 0x6a, 0x1b, 0x83, 0x11, 0xbf, 0x94, 0x62, 0xa5, 0xf9, 0x39,
0xc6, 0xb7, 0x43, 0x07,
],
[
0x3e, 0xf9, 0xb3, 0x0b, 0xae, 0x61, 0x22, 0xda, 0x16, 0x05, 0xba, 0xd6, 0xec, 0x5d,
0x49, 0xb4, 0x1d, 0x4d, 0x40, 0xca, 0xa9, 0x6c, 0x1c, 0xf6, 0x30, 0x2b, 0x66, 0xc5,
0xd2, 0xd1, 0x0d, 0x39,
],
[
0x22, 0xae, 0x28, 0x00, 0xcb, 0x93, 0xab, 0xe6, 0x3b, 0x70, 0xc1, 0x72, 0xde, 0x70,
0x36, 0x2d, 0x98, 0x30, 0xe5, 0x38, 0x00, 0x39, 0x88, 0x84, 0xa7, 0xa6, 0x4f, 0xf6,
0x8e, 0xd9, 0x9e, 0x0b,
],
[
0x18, 0x71, 0x10, 0xd9, 0x26, 0x72, 0xc2, 0x4c, 0xed, 0xb0, 0x97, 0x9c, 0xdf, 0xc9,
0x17, 0xa6, 0x05, 0x3b, 0x31, 0x0d, 0x14, 0x5c, 0x03, 0x1c, 0x72, 0x92, 0xbb, 0x1d,
0x65, 0xb7, 0x66, 0x1b,
],
[
0x3f, 0x98, 0xad, 0xbe, 0x36, 0x4f, 0x14, 0x8b, 0x0c, 0xc2, 0x04, 0x2c, 0xaf, 0xc6,
0xbe, 0x11, 0x66, 0xfa, 0xe3, 0x90, 0x90, 0xab, 0x4b, 0x35, 0x4b, 0xfb, 0x62, 0x17,
0xb9, 0x64, 0x45, 0x3b,
],
[
0x63, 0xf8, 0xdb, 0xd1, 0x0d, 0xf9, 0x36, 0xf1, 0x73, 0x49, 0x73, 0xe0, 0xb3, 0xbd,
0x25, 0xf4, 0xed, 0x44, 0x05, 0x66, 0xc9, 0x23, 0x08, 0x59, 0x03, 0xf6, 0x96, 0xbc,
0x63, 0x47, 0xec, 0x0f,
],
[
0x21, 0x82, 0x16, 0x3e, 0xac, 0x40, 0x61, 0x88, 0x5a, 0x31, 0x35, 0x68, 0x14, 0x8d,
0xfa, 0xe5, 0x64, 0xe4, 0x78, 0x06, 0x6d, 0xcb, 0xe3, 0x89, 0xa0, 0xdd, 0xb1, 0xec,
0xb7, 0xf5, 0xdc, 0x34,
],
[
0xbd, 0x9d, 0xc0, 0x68, 0x19, 0x18, 0xa3, 0xf3, 0xf9, 0xcd, 0x1f, 0x9e, 0x06, 0xaa,
0x1a, 0xd6, 0x89, 0x27, 0xda, 0x63, 0xac, 0xc1, 0x3b, 0x92, 0xa2, 0x57, 0x8b, 0x27,
0x38, 0xa6, 0xd3, 0x31,
],
[
0xca, 0x2c, 0xed, 0x95, 0x3b, 0x7f, 0xb9, 0x5e, 0x3b, 0xa9, 0x86, 0x33, 0x3d, 0xa9,
0xe6, 0x9c, 0xd3, 0x55, 0x22, 0x3c, 0x92, 0x97, 0x31, 0x09, 0x4b, 0x6c, 0x21, 0x74,
0xc7, 0x63, 0x8d, 0x2e,
],
[
0x55, 0x35, 0x4b, 0x96, 0xb5, 0x6f, 0x9e, 0x45, 0xaa, 0xe1, 0xe0, 0x09, 0x4d, 0x71,
0xee, 0x24, 0x8d, 0xab, 0xf6, 0x68, 0x11, 0x77, 0x78, 0xbd, 0xc3, 0xc1, 0x9c, 0xa5,
0x33, 0x1a, 0x4e, 0x1a,
],
[
0x70, 0x97, 0xb0, 0x4c, 0x2a, 0xa0, 0x45, 0xa0, 0xde, 0xff, 0xca, 0xca, 0x41, 0xc5,
0xac, 0x92, 0xe6, 0x94, 0x46, 0x65, 0x78, 0xf5, 0x90, 0x9e, 0x72, 0xbb, 0x78, 0xd3,
0x33, 0x10, 0xf7, 0x05,
],
[
0xe8, 0x1d, 0x68, 0x21, 0xff, 0x81, 0x3b, 0xd4, 0x10, 0x86, 0x7a, 0x3f, 0x22, 0xe8,
0xe5, 0xcb, 0x7a, 0xc5, 0x59, 0x9a, 0x61, 0x0a, 0xf5, 0xc3, 0x54, 0xeb, 0x39, 0x28,
0x77, 0x36, 0x2e, 0x01,
],
[
0x15, 0x7d, 0xe8, 0x56, 0x7f, 0x7c, 0x49, 0x96, 0xb8, 0xc4, 0xfd, 0xc9, 0x49, 0x38,
0xfd, 0x80, 0x8c, 0x3b, 0x2a, 0x5c, 0xcb, 0x79, 0xd1, 0xa6, 0x38, 0x58, 0xad, 0xaa,
0x9a, 0x6d, 0xd8, 0x24,
],
[
0xfe, 0x1f, 0xce, 0x51, 0xcd, 0x61, 0x20, 0xc1, 0x2c, 0x12, 0x46, 0x95, 0xc4, 0xf9,
0x8b, 0x27, 0x59, 0x18, 0xfc, 0xea, 0xe6, 0xeb, 0x20, 0x98, 0x73, 0xed, 0x73, 0xfe,
0x73, 0x77, 0x5d, 0x0b,
],
[
0x1f, 0x91, 0x98, 0x29, 0x12, 0x01, 0x26, 0x69, 0xf7, 0x4d, 0x0c, 0xfa, 0x10, 0x30,
0xff, 0x37, 0xb1, 0x52, 0x32, 0x4e, 0x5b, 0x83, 0x46, 0xb3, 0x33, 0x5a, 0x0a, 0xae,
0xb6, 0x3a, 0x0a, 0x2d,
],
[
0x5d, 0xec, 0x15, 0xf5, 0x2a, 0xf1, 0x7d, 0xa3, 0x93, 0x13, 0x96, 0x18, 0x3c, 0xbb,
0xbf, 0xbe, 0xa7, 0xed, 0x95, 0x07, 0x14, 0x54, 0x0a, 0xec, 0x06, 0xc6, 0x45, 0xc7,
0x54, 0x97, 0x55, 0x22,
],
[
0xe8, 0xae, 0x2a, 0xd9, 0x1d, 0x46, 0x3b, 0xab, 0x75, 0xee, 0x94, 0x1d, 0x33, 0xcc,
0x58, 0x17, 0xb6, 0x13, 0xc6, 0x3c, 0xda, 0x94, 0x3a, 0x4c, 0x07, 0xf6, 0x00, 0x59,
0x1b, 0x08, 0x8a, 0x25,
],
[
0xd5, 0x3f, 0xde, 0xe3, 0x71, 0xce, 0xf5, 0x96, 0x76, 0x68, 0x23, 0xf4, 0xa5, 0x18,
0xa5, 0x83, 0xb1, 0x15, 0x82, 0x43, 0xaf, 0xe8, 0x97, 0x00, 0xf0, 0xda, 0x76, 0xda,
0x46, 0xd0, 0x06, 0x0f,
],
[
0x15, 0xd2, 0x44, 0x4c, 0xef, 0xe7, 0x91, 0x4c, 0x9a, 0x61, 0xe8, 0x29, 0xc7, 0x30,
0xec, 0xeb, 0x21, 0x62, 0x88, 0xfe, 0xe8, 0x25, 0xf6, 0xb3, 0xb6, 0x29, 0x8f, 0x6f,
0x6b, 0x6b, 0xd6, 0x2e,
],
[
0x4c, 0x57, 0xa6, 0x17, 0xa0, 0xaa, 0x10, 0xea, 0x7a, 0x83, 0xaa, 0x6b, 0x6b, 0x0e,
0xd6, 0x85, 0xb6, 0xa3, 0xd9, 0xe5, 0xb8, 0xfd, 0x14, 0xf5, 0x6c, 0xdc, 0x18, 0x02,
0x1b, 0x12, 0x25, 0x3f,
],
[
0x3f, 0xd4, 0x91, 0x5c, 0x19, 0xbd, 0x83, 0x1a, 0x79, 0x20, 0xbe, 0x55, 0xd9, 0x69,
0xb2, 0xac, 0x23, 0x35, 0x9e, 0x25, 0x59, 0xda, 0x77, 0xde, 0x23, 0x73, 0xf0, 0x6c,
0xa0, 0x14, 0xba, 0x27,
],
[
0x87, 0xd0, 0x63, 0xcd, 0x07, 0xee, 0x49, 0x44, 0x22, 0x2b, 0x77, 0x62, 0x84, 0x0e,
0xb9, 0x4c, 0x68, 0x8b, 0xec, 0x74, 0x3f, 0xa8, 0xbd, 0xf7, 0x71, 0x5c, 0x8f, 0xe2,
0x9f, 0x10, 0x4c, 0x2a,
],
[
0xae, 0x29, 0x35, 0xf1, 0xdf, 0xd8, 0xa2, 0x4a, 0xed, 0x7c, 0x70, 0xdf, 0x7d, 0xe3,
0xa6, 0x68, 0xeb, 0x7a, 0x49, 0xb1, 0x31, 0x98, 0x80, 0xdd, 0xe2, 0xbb, 0xd9, 0x03,
0x1a, 0xe5, 0xd8, 0x2f,
],
],
}
}

24
src/tree.rs
View File

@ -136,19 +136,22 @@ pub mod testing {
note::{commitment::ExtractedNoteCommitment, testing::arb_note, Note},
value::{testing::arb_positive_note_value, MAX_NOTE_VALUE},
};
use pasta_curves::pallas;
use pasta_curves::{arithmetic::FieldExt, pallas};
use proptest::collection::vec;
use proptest::prelude::*;
use super::{hash_layer, Anchor, MerklePath, Pair};
// The uncommitted leaf is defined as pallas::Base(2).
// <https://zips.z.cash/protocol/protocol.pdf#thmuncommittedorchard>
lazy_static! {
static ref EMPTY_ROOTS: Vec<pallas::Base> = {
iter::empty()
.chain(Some(pallas::Base::zero()))
.chain(
(0..MERKLE_DEPTH_ORCHARD).scan(pallas::Base::zero(), |state, l_star| {
.chain(Some(pallas::Base::from_u64(2)))
.chain((0..MERKLE_DEPTH_ORCHARD).scan(
pallas::Base::from_u64(2),
|state, l_star| {
*state = hash_layer(
l_star,
Pair {
@ -157,12 +160,21 @@ pub mod testing {
},
);
Some(*state)
}),
)
},
))
.collect()
};
}
#[test]
fn test_vectors() {
let tv_empty_roots = crate::test_vectors::commitment_tree::test_vectors().empty_roots;
for (height, root) in EMPTY_ROOTS.iter().enumerate() {
assert_eq!(tv_empty_roots[height], root.to_bytes());
}
}
prop_compose! {
/// Generates an arbitrary Merkle tree of with `n_notes` nonempty leaves.
pub fn arb_tree(n_notes: usize)