2020-08-11 23:51:11 -07:00
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//! Note Commitment Trees.
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//!
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//! A note commitment tree is an incremental Merkle tree of fixed depth
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//! used to store note commitments that JoinSplit transfers or Spend
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//! transfers produce. Just as the unspent transaction output set (UTXO
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//! set) used in Bitcoin, it is used to express the existence of value and
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//! the capability to spend it. However, unlike the UTXO set, it is not
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//! the job of this tree to protect against double-spending, as it is
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//! append-only.
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//!
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//! A root of a note commitment tree is associated with each treestate.
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#![allow(clippy::unit_arg)]
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use std::fmt;
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2020-09-24 20:46:20 -07:00
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use byteorder::{ByteOrder, LittleEndian};
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use lazy_static::lazy_static;
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2020-09-23 18:52:52 -07:00
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#[cfg(any(test, feature = "proptest-impl"))]
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2020-08-11 23:51:11 -07:00
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use proptest_derive::Arbitrary;
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2020-09-24 20:46:20 -07:00
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use sha2::digest::generic_array::GenericArray;
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use super::commitment::NoteCommitment;
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const MERKLE_DEPTH: usize = 29;
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/// MerkleCRH^Sprout Hash Function
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///
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/// MerkleCRH^Sprout(layer, left, right) := SHA256Compress(left || right)
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///
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/// `layer` is unused for Sprout but used for the Sapling equivalent.
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///
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/// https://zips.z.cash/protocol/protocol.pdf#merklecrh
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fn merkle_crh_sprout(left: [u8; 32], right: [u8; 32]) -> [u8; 32] {
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let mut other_block = [0u8; 64];
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other_block[..32].copy_from_slice(&left[..]);
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other_block[32..].copy_from_slice(&right[..]);
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let mut state = [0u32; 8];
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sha2::compress256(&mut state, &[GenericArray::clone_from_slice(&other_block)]);
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let mut derived_bytes = [0u8; 32];
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LittleEndian::write_u32_into(&state, &mut derived_bytes);
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derived_bytes
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}
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lazy_static! {
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/// Sprout note commitment trees have a max depth of 29.
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///
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/// https://zips.z.cash/protocol/canopy.pdf#constants
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static ref EMPTY_ROOTS: Vec<[u8; 32]> = {
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// Uncommitted^Sprout = = [0]^l_MerkleSprout
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let mut v = vec![[0u8; 32]];
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for d in 0..MERKLE_DEPTH {
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let next = merkle_crh_sprout(v[d], v[d]);
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v.push(next);
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}
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v
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};
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}
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/// The index of a note’s commitment at the leafmost layer of its Note
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/// Commitment Tree.
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///
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/// https://zips.z.cash/protocol/protocol.pdf#merkletree
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pub struct Position(pub(crate) u64);
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2020-09-19 01:09:09 -07:00
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2020-08-11 23:51:11 -07:00
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/// Sprout note commitment tree root node hash.
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///
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/// The root hash in LEBS2OSP256(rt) encoding of the Sprout note
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/// commitment tree corresponding to the final Sprout treestate of
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/// this block. A root of a note commitment tree is associated with
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/// each treestate.
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2020-09-24 15:46:04 -07:00
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#[derive(Clone, Copy, Default, Eq, PartialEq, Serialize, Deserialize, Hash)]
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2020-09-23 18:52:52 -07:00
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#[cfg_attr(any(test, feature = "proptest-impl"), derive(Arbitrary))]
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2020-08-28 01:22:40 -07:00
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pub struct Root([u8; 32]);
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2020-08-11 23:51:11 -07:00
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2020-08-28 01:22:40 -07:00
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impl fmt::Debug for Root {
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2020-08-11 23:51:11 -07:00
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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2020-08-28 01:22:40 -07:00
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f.debug_tuple("Root").field(&hex::encode(&self.0)).finish()
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2020-08-11 23:51:11 -07:00
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}
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}
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2020-08-28 01:22:40 -07:00
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impl From<[u8; 32]> for Root {
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fn from(bytes: [u8; 32]) -> Root {
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2020-08-11 23:51:11 -07:00
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Self(bytes)
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}
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}
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2020-08-28 01:22:40 -07:00
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impl From<Root> for [u8; 32] {
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fn from(rt: Root) -> [u8; 32] {
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2020-08-11 23:51:11 -07:00
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rt.0
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}
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}
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2020-09-24 20:46:20 -07:00
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/// Sprout Note Commitment Tree
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#[derive(Clone, Debug, Default, Eq, PartialEq)]
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#[cfg_attr(test, derive(Arbitrary))]
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struct NoteCommitmentTree {
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/// The root node of the tree (often used as an anchor).
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root: Root,
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/// The height of the tree (maximum height for Sprout is 29).
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height: u8,
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/// The number of leaves (note commitments) in this tree.
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count: u32,
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}
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impl From<Vec<NoteCommitment>> for NoteCommitmentTree {
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fn from(values: Vec<NoteCommitment>) -> Self {
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if values.is_empty() {
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return NoteCommitmentTree {
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root: Root::default(),
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height: 0,
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count: 0,
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};
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}
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let count = values.len() as u32;
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let mut height = 0u8;
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let mut current_layer: Vec<[u8; 32]> = values.into_iter().map(|cm| cm.into()).collect();
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while usize::from(height) < MERKLE_DEPTH {
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let mut next_layer_up = vec![];
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while !current_layer.is_empty() {
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let left = current_layer.remove(0);
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let right;
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if current_layer.is_empty() {
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right = EMPTY_ROOTS[height as usize];
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} else {
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right = current_layer.remove(0);
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}
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next_layer_up.push(merkle_crh_sprout(left, right));
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}
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height += 1;
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current_layer = next_layer_up;
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}
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assert!(current_layer.len() == 1);
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NoteCommitmentTree {
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root: Root(current_layer.remove(0)),
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height,
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count,
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}
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}
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}
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impl NoteCommitmentTree {
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/// Get the Jubjub-based Pedersen hash of root node of this merkle tree of
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/// commitment notes.
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pub fn hash(&self) -> [u8; 32] {
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self.root.0
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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2020-09-24 22:13:32 -07:00
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// From https://github.com/zcash/zcash/blob/master/src/zcash/IncrementalMerkleTree.cpp#L439
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const HEX_EMPTY_ROOTS: [[u8; 32]; 66] = [
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[
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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],
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[
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0xda, 0x56, 0x98, 0xbe, 0x17, 0xb9, 0xb4, 0x69, 0x62, 0x33, 0x57, 0x99, 0x77, 0x9f,
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0xbe, 0xca, 0x8c, 0xe5, 0xd4, 0x91, 0xc0, 0xd2, 0x62, 0x43, 0xba, 0xfe, 0xf9, 0xea,
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0x18, 0x37, 0xa9, 0xd8,
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],
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[
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0xdc, 0x76, 0x6f, 0xab, 0x49, 0x2c, 0xcf, 0x3d, 0x1e, 0x49, 0xd4, 0xf3, 0x74, 0xb5,
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0x23, 0x5f, 0xa5, 0x65, 0x06, 0xaa, 0xc2, 0x22, 0x4d, 0x39, 0xf9, 0x43, 0xfc, 0xd4,
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0x92, 0x02, 0x97, 0x4c,
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],
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[
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0x3f, 0x0a, 0x40, 0x61, 0x81, 0x10, 0x59, 0x68, 0xfd, 0xae, 0xe3, 0x06, 0x79, 0xe3,
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0x27, 0x3c, 0x66, 0xb7, 0x2b, 0xf9, 0xa7, 0xf5, 0xde, 0xbb, 0xf3, 0xb5, 0xa0, 0xa2,
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0x6e, 0x35, 0x9f, 0x92,
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],
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[
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0x26, 0xb0, 0x05, 0x26, 0x94, 0xfc, 0x42, 0xfd, 0xff, 0x93, 0xe6, 0xfb, 0x5a, 0x71,
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0xd3, 0x8c, 0x3d, 0xd7, 0xdc, 0x5b, 0x6a, 0xd7, 0x10, 0xeb, 0x04, 0x8c, 0x66, 0x02,
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0x33, 0x13, 0x7f, 0xab,
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],
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[
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0x01, 0x09, 0xec, 0xc0, 0x72, 0x26, 0x59, 0xff, 0x83, 0x45, 0x0b, 0x8f, 0x7b, 0x88,
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0x46, 0xe6, 0x7b, 0x28, 0x59, 0xf3, 0x3c, 0x30, 0xd9, 0xb7, 0xac, 0xd5, 0xbf, 0x39,
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0xca, 0xe5, 0x4e, 0x31,
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],
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[
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0x3f, 0x90, 0x9b, 0x8c, 0xe3, 0xd7, 0xff, 0xd8, 0xa5, 0xb3, 0x09, 0x08, 0xf6, 0x05,
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0xa0, 0x3b, 0x0d, 0xb8, 0x51, 0x69, 0x55, 0x8d, 0xdc, 0x1d, 0xa7, 0xbb, 0xbc, 0xc9,
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0xb0, 0x9f, 0xd3, 0x25,
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],
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[
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0x40, 0x46, 0x0f, 0xa6, 0xbc, 0x69, 0x2a, 0x06, 0xf4, 0x75, 0x21, 0xa6, 0x72, 0x5a,
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0x54, 0x7c, 0x02, 0x8a, 0x6a, 0x24, 0x0d, 0x84, 0x09, 0xf1, 0x65, 0xe6, 0x3c, 0xb5,
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0x4d, 0xa2, 0xd2, 0x3f,
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],
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[
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0x8c, 0x08, 0x56, 0x74, 0x24, 0x9b, 0x43, 0xda, 0x1b, 0x9a, 0x31, 0xa0, 0xe8, 0x20,
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0xe8, 0x1e, 0x75, 0xf3, 0x42, 0x80, 0x7b, 0x03, 0xb6, 0xb9, 0xe6, 0x49, 0x83, 0x21,
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0x7b, 0xc2, 0xb3, 0x8e,
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],
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[
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0xa0, 0x83, 0x45, 0x0c, 0x1b, 0xa2, 0xa3, 0xa7, 0xbe, 0x76, 0xfa, 0xd9, 0xd1, 0x3b,
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0xc3, 0x7b, 0xe4, 0xbf, 0x83, 0xbd, 0x3e, 0x59, 0xfc, 0x37, 0x5a, 0x36, 0xba, 0x62,
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0xdc, 0x62, 0x02, 0x98,
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],
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[
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0x1d, 0xdd, 0xda, 0xbc, 0x2c, 0xaa, 0x2d, 0xe9, 0xef, 0xf9, 0xe1, 0x8c, 0x8c, 0x5a,
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0x39, 0x40, 0x6d, 0x79, 0x36, 0xe8, 0x89, 0xbc, 0x16, 0xcf, 0xab, 0xb1, 0x44, 0xf5,
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0xc0, 0x02, 0x26, 0x82,
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],
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[
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0xc2, 0x2d, 0x8f, 0x0b, 0x5e, 0x40, 0x56, 0xe5, 0xf3, 0x18, 0xba, 0x22, 0x09, 0x1c,
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0xc0, 0x7d, 0xb5, 0x69, 0x4f, 0xbe, 0xb5, 0xe8, 0x7e, 0xf0, 0xd7, 0xe2, 0xc5, 0x7c,
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0xa3, 0x52, 0x35, 0x9e,
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],
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[
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0x89, 0xa4, 0x34, 0xae, 0x1f, 0xeb, 0xd7, 0x68, 0x7e, 0xce, 0xea, 0x21, 0xd0, 0x7f,
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0x20, 0xa2, 0x51, 0x24, 0x49, 0xd0, 0x8c, 0xe2, 0xee, 0xe5, 0x58, 0x71, 0xcd, 0xb9,
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0xd4, 0x6c, 0x12, 0x33,
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],
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[
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0x73, 0x33, 0xdb, 0xff, 0xbd, 0x11, 0xf0, 0x92, 0x47, 0xa2, 0xb3, 0x3a, 0x01, 0x3e,
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0xc4, 0xc4, 0x34, 0x20, 0x29, 0xd8, 0x51, 0xe2, 0x2b, 0xa4, 0x85, 0xd4, 0x46, 0x18,
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0x51, 0x37, 0x0c, 0x15,
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],
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[
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0x5d, 0xad, 0x84, 0x4a, 0xb9, 0x46, 0x6b, 0x70, 0xf7, 0x45, 0x13, 0x71, 0x95, 0xca,
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0x22, 0x1b, 0x48, 0xf3, 0x46, 0xab, 0xd1, 0x45, 0xfb, 0x5e, 0xfc, 0x23, 0xa8, 0xb4,
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0xba, 0x50, 0x80, 0x22,
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],
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[
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0x50, 0x7e, 0x0d, 0xae, 0x81, 0xcb, 0xfb, 0xe4, 0x57, 0xfd, 0x37, 0x0e, 0xf1, 0xca,
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0x42, 0x01, 0xc2, 0xb6, 0x40, 0x10, 0x83, 0xdd, 0xab, 0x44, 0x0e, 0x4a, 0x03, 0x8d,
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0xc1, 0xe3, 0x58, 0xc4,
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],
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[
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0xbd, 0xcd, 0xb3, 0x29, 0x31, 0x88, 0xc9, 0x80, 0x7d, 0x80, 0x82, 0x67, 0x01, 0x86,
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|
|
0x84, 0xcf, 0xec, 0xe0, 0x7a, 0xc3, 0x5a, 0x42, 0xc0, 0x0f, 0x2c, 0x79, 0xb4, 0x00,
|
|
|
|
|
0x38, 0x25, 0x30, 0x5d,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xba, 0xb5, 0x80, 0x09, 0x72, 0xa1, 0x6c, 0x2c, 0x22, 0x53, 0x0c, 0x66, 0x06, 0x6d,
|
|
|
|
|
0x0a, 0x58, 0x67, 0xe9, 0x87, 0xbe, 0xd2, 0x1a, 0x6d, 0x5a, 0x45, 0x0b, 0x68, 0x3c,
|
|
|
|
|
0xf1, 0xcf, 0xd7, 0x09,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0x11, 0xaa, 0x0b, 0x4a, 0xd2, 0x9b, 0x13, 0xb0, 0x57, 0xa3, 0x16, 0x19, 0xd6, 0x50,
|
|
|
|
|
0x0d, 0x63, 0x6c, 0xd7, 0x35, 0xcd, 0xd0, 0x7d, 0x81, 0x1e, 0xa2, 0x65, 0xec, 0x4b,
|
|
|
|
|
0xcb, 0xbb, 0xd0, 0x58,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0x51, 0x45, 0xb1, 0xb0, 0x55, 0xc2, 0xdf, 0x02, 0xb9, 0x56, 0x75, 0xe3, 0x79, 0x7b,
|
|
|
|
|
0x91, 0xde, 0x1b, 0x84, 0x6d, 0x25, 0x00, 0x3c, 0x0a, 0x80, 0x3d, 0x08, 0x90, 0x07,
|
|
|
|
|
0x28, 0xf2, 0xcd, 0x6a,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0x03, 0x23, 0xf2, 0x85, 0x0b, 0xf3, 0x44, 0x4f, 0x4b, 0x4c, 0x5c, 0x09, 0xa6, 0x05,
|
|
|
|
|
0x7e, 0xc7, 0x16, 0x91, 0x90, 0xf4, 0x5a, 0xcb, 0x9e, 0x46, 0x98, 0x4a, 0xb3, 0xdf,
|
|
|
|
|
0xce, 0xc4, 0xf0, 0x6a,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0x67, 0x15, 0x46, 0xe2, 0x6b, 0x1d, 0xa1, 0xaf, 0x75, 0x45, 0x31, 0xe2, 0x6d, 0x8a,
|
|
|
|
|
0x6a, 0x51, 0x07, 0x3a, 0x57, 0xdd, 0xd7, 0x2d, 0xc4, 0x72, 0xef, 0xb4, 0x3f, 0xcb,
|
|
|
|
|
0x25, 0x7c, 0xff, 0xff,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xbb, 0x23, 0xa9, 0xbb, 0xa5, 0x6d, 0xe5, 0x7c, 0xb2, 0x84, 0xb0, 0xd2, 0xb0, 0x1c,
|
|
|
|
|
0x64, 0x2c, 0xf7, 0x9c, 0x9a, 0x55, 0x63, 0xf0, 0x06, 0x7a, 0x21, 0x29, 0x24, 0x12,
|
|
|
|
|
0x14, 0x5b, 0xd7, 0x8a,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xf3, 0x0c, 0xc8, 0x36, 0xb9, 0xf7, 0x1b, 0x4e, 0x7e, 0xe3, 0xc7, 0x2b, 0x1f, 0xd2,
|
|
|
|
|
0x53, 0x26, 0x8a, 0xf9, 0xa2, 0x7e, 0x9d, 0x72, 0x91, 0xa2, 0x3d, 0x02, 0x82, 0x1b,
|
|
|
|
|
0x21, 0xdd, 0xfd, 0x16,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0x58, 0xa2, 0x75, 0x3d, 0xad, 0xe1, 0x03, 0xce, 0xcb, 0xcd, 0xa5, 0x0b, 0x5e, 0xbf,
|
|
|
|
|
0xce, 0x31, 0xe1, 0x2d, 0x41, 0xd5, 0x84, 0x1d, 0xcc, 0x95, 0x62, 0x0f, 0x7b, 0x3d,
|
|
|
|
|
0x50, 0xa1, 0xb9, 0xa1,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0x92, 0x5e, 0x6d, 0x47, 0x4a, 0x5d, 0x8d, 0x30, 0x04, 0xf2, 0x9d, 0xa0, 0xdd, 0x78,
|
|
|
|
|
0xd3, 0x0a, 0xe3, 0x82, 0x4c, 0xe7, 0x9d, 0xfe, 0x49, 0x34, 0xbb, 0x29, 0xec, 0x3a,
|
|
|
|
|
0xfa, 0xf3, 0xd5, 0x21,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0x08, 0xf2, 0x79, 0x61, 0x86, 0x16, 0xbc, 0xdd, 0x4e, 0xad, 0xc9, 0xc7, 0xa9, 0x06,
|
|
|
|
|
0x26, 0x91, 0xa5, 0x9b, 0x43, 0xb0, 0x7e, 0x2c, 0x1e, 0x23, 0x7f, 0x17, 0xbd, 0x18,
|
|
|
|
|
0x9c, 0xd6, 0xa8, 0xfe,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xc9, 0x2b, 0x32, 0xdb, 0x42, 0xf4, 0x2e, 0x2b, 0xf0, 0xa5, 0x9d, 0xf9, 0x05, 0x5b,
|
|
|
|
|
0xe5, 0xc6, 0x69, 0xd3, 0x24, 0x2d, 0xf4, 0x53, 0x57, 0x65, 0x9b, 0x75, 0xae, 0x2c,
|
|
|
|
|
0x27, 0xa7, 0x6f, 0x50,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xc0, 0xdb, 0x2a, 0x74, 0x99, 0x8c, 0x50, 0xeb, 0x7b, 0xa6, 0x53, 0x4f, 0x6d, 0x41,
|
|
|
|
|
0x0e, 0xfc, 0x27, 0xc4, 0xbb, 0x88, 0xac, 0xb0, 0x22, 0x2c, 0x79, 0x06, 0xea, 0x28,
|
|
|
|
|
0xa3, 0x27, 0xb5, 0x11,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xd7, 0xc6, 0x12, 0xc8, 0x17, 0x79, 0x31, 0x91, 0xa1, 0xe6, 0x86, 0x52, 0x12, 0x18,
|
|
|
|
|
0x76, 0xd6, 0xb3, 0xbd, 0xe4, 0x0f, 0x4f, 0xa5, 0x2b, 0xc3, 0x14, 0x14, 0x5c, 0xe6,
|
|
|
|
|
0xe5, 0xcd, 0xd2, 0x59,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xb2, 0x23, 0x70, 0x10, 0x6c, 0x67, 0xa1, 0x72, 0x09, 0xf6, 0x13, 0x0b, 0xc0, 0x9f,
|
|
|
|
|
0x73, 0x5d, 0x83, 0xaa, 0x2c, 0x04, 0xfc, 0x4f, 0xe7, 0x2e, 0xa5, 0xd8, 0x0b, 0x21,
|
|
|
|
|
0x67, 0x23, 0xe7, 0xce,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0x9f, 0x67, 0xd5, 0xf6, 0x64, 0x66, 0x4c, 0x90, 0x19, 0x40, 0xee, 0xe3, 0xd0, 0x2d,
|
|
|
|
|
0xd5, 0xb3, 0xe4, 0xb9, 0x2e, 0x7b, 0x42, 0x82, 0x0c, 0x42, 0xfc, 0x51, 0x59, 0xe9,
|
|
|
|
|
0x1b, 0x41, 0x17, 0x2a,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xac, 0x58, 0xcd, 0x13, 0x88, 0xfe, 0xc2, 0x90, 0xd3, 0x98, 0xf1, 0x94, 0x4b, 0x56,
|
|
|
|
|
0x44, 0x49, 0xa6, 0x3c, 0x81, 0x58, 0x80, 0x56, 0x6b, 0xd1, 0xd1, 0x89, 0xf7, 0x83,
|
|
|
|
|
0x9e, 0x3b, 0x0c, 0x8c,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0x56, 0x98, 0xea, 0xe7, 0xc8, 0x51, 0x5e, 0xd0, 0x5a, 0x70, 0x33, 0x9b, 0xdf, 0x7c,
|
|
|
|
|
0x10, 0x28, 0xe7, 0xac, 0xca, 0x13, 0xa4, 0xfa, 0x97, 0xd9, 0x53, 0x8f, 0x01, 0xac,
|
|
|
|
|
0x8d, 0x88, 0x9a, 0xe3,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0x2d, 0x49, 0x95, 0x77, 0x0a, 0x76, 0xfb, 0x93, 0x31, 0x4c, 0xa7, 0x4b, 0x35, 0x24,
|
|
|
|
|
0xea, 0x1d, 0xb5, 0x68, 0x8a, 0xd0, 0xa7, 0x61, 0x83, 0xea, 0x17, 0x20, 0x4a, 0x8f,
|
|
|
|
|
0x02, 0x4a, 0x9f, 0x3b,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0x5e, 0x89, 0x92, 0xc1, 0xb0, 0x72, 0xc1, 0x6e, 0x9e, 0x28, 0xa8, 0x53, 0x58, 0xfb,
|
|
|
|
|
0x5f, 0xb6, 0x90, 0x1a, 0x81, 0x58, 0x77, 0x66, 0xda, 0xdb, 0x7a, 0xa0, 0xb9, 0x73,
|
|
|
|
|
0xde, 0xd2, 0xf2, 0x64,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xe9, 0x5d, 0xb7, 0x1e, 0x1f, 0x72, 0x91, 0xba, 0x54, 0x99, 0x46, 0x1b, 0xc7, 0x15,
|
|
|
|
|
0x20, 0x3e, 0x29, 0xb8, 0x4b, 0xfa, 0x42, 0x83, 0xe3, 0xbb, 0x7f, 0x47, 0x0a, 0x15,
|
|
|
|
|
0xd0, 0xe1, 0x58, 0x4e,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0x41, 0xf0, 0x78, 0xbd, 0x18, 0x24, 0xc8, 0xa4, 0xb7, 0x19, 0x64, 0xf3, 0x94, 0xaa,
|
|
|
|
|
0x59, 0x50, 0x84, 0xd8, 0xeb, 0x17, 0xb9, 0x7a, 0x36, 0x30, 0x43, 0x3a, 0xf7, 0x0d,
|
|
|
|
|
0x10, 0xe0, 0xef, 0xf6,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xa1, 0x91, 0x3f, 0xe6, 0xb2, 0x01, 0x32, 0x31, 0x2f, 0x8c, 0x1f, 0x00, 0xdd, 0xd6,
|
|
|
|
|
0x3c, 0xec, 0x7a, 0x03, 0xf5, 0xf1, 0xd7, 0xd8, 0x34, 0x92, 0xfa, 0x28, 0x4c, 0x0b,
|
|
|
|
|
0x5d, 0x63, 0x20, 0xb0,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xba, 0x94, 0x40, 0xc4, 0xdb, 0xfc, 0xf5, 0x5c, 0xeb, 0x60, 0x5a, 0x5b, 0x89, 0x90,
|
|
|
|
|
0xfc, 0x11, 0xf8, 0xef, 0x22, 0x87, 0x0d, 0x8d, 0x12, 0xe1, 0x30, 0xf9, 0x86, 0x49,
|
|
|
|
|
0x1e, 0xae, 0x84, 0xb3,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0x49, 0xdb, 0x2d, 0x5e, 0x22, 0xb8, 0x01, 0x5c, 0xae, 0x48, 0x10, 0xd7, 0x5e, 0x54,
|
|
|
|
|
0x01, 0x4c, 0x54, 0x69, 0x86, 0x27, 0x38, 0xe1, 0x61, 0xec, 0x96, 0xec, 0x20, 0x21,
|
|
|
|
|
0x87, 0x18, 0x82, 0x8a,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xd4, 0x85, 0x1f, 0xb8, 0x43, 0x1e, 0xdf, 0xbb, 0x8b, 0x1e, 0x85, 0xad, 0xa6, 0x89,
|
|
|
|
|
0x59, 0x67, 0xc2, 0xda, 0xc8, 0x7d, 0xf3, 0x44, 0x99, 0x2a, 0x05, 0xfa, 0xf1, 0xec,
|
|
|
|
|
0xf8, 0x36, 0xee, 0xc9,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xe4, 0xab, 0x9f, 0x44, 0x70, 0xf0, 0x0c, 0xd1, 0x96, 0xd4, 0x7c, 0x75, 0xc8, 0x2e,
|
|
|
|
|
0x7a, 0xda, 0xf0, 0x6f, 0xe1, 0x7e, 0x04, 0x2e, 0x39, 0x53, 0xd9, 0x3b, 0xb5, 0xd5,
|
|
|
|
|
0x6d, 0x8c, 0xd8, 0xfb,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0x7e, 0x43, 0x20, 0x43, 0x48, 0x49, 0xec, 0xb3, 0x57, 0xf1, 0xaf, 0xaa, 0xba, 0x21,
|
|
|
|
|
0xa5, 0x44, 0x00, 0xef, 0x2d, 0x11, 0xcf, 0xf8, 0x3b, 0x93, 0x7d, 0x87, 0xfd, 0xaf,
|
|
|
|
|
0xa4, 0x9f, 0x81, 0x99,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0x02, 0x0a, 0xdc, 0x98, 0xd9, 0x6c, 0xfb, 0xbc, 0xca, 0x15, 0xfc, 0x3a, 0xa0, 0x37,
|
|
|
|
|
0x60, 0xed, 0x28, 0x66, 0x86, 0xc3, 0x5b, 0x5d, 0x92, 0xc7, 0xcb, 0x64, 0xa9, 0x99,
|
|
|
|
|
0xb3, 0x94, 0xa8, 0x54,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0x3a, 0x26, 0xb2, 0x9f, 0xe1, 0xac, 0xfd, 0xd6, 0xc6, 0xa1, 0x51, 0xbc, 0xc3, 0xdb,
|
|
|
|
|
0xcb, 0x95, 0xa1, 0x0e, 0xbe, 0x2f, 0x05, 0x53, 0xf8, 0x07, 0x79, 0x56, 0x9b, 0x67,
|
|
|
|
|
0xb7, 0x24, 0x4e, 0x77,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xec, 0x2d, 0x09, 0x86, 0xe6, 0xa0, 0xdd, 0xf4, 0x38, 0x97, 0xb2, 0xd4, 0xf2, 0x3b,
|
|
|
|
|
0xb0, 0x34, 0xf5, 0x38, 0xff, 0xe0, 0x08, 0x27, 0xf3, 0x10, 0xdc, 0x49, 0x63, 0xf3,
|
|
|
|
|
0x26, 0x7f, 0x0b, 0xfb,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xd4, 0x80, 0x73, 0xf8, 0x81, 0x9f, 0x81, 0xf0, 0x35, 0x8e, 0x3f, 0xc3, 0x5a, 0x04,
|
|
|
|
|
0x7c, 0xc7, 0x40, 0x82, 0xae, 0x1c, 0xb7, 0xee, 0x22, 0xfb, 0x60, 0x9c, 0x01, 0x64,
|
|
|
|
|
0x93, 0x42, 0xd0, 0xe6,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xad, 0x80, 0x37, 0x60, 0x17, 0x93, 0xf1, 0x72, 0x44, 0x1e, 0xcb, 0x00, 0xdc, 0x13,
|
|
|
|
|
0x8d, 0x9f, 0xc5, 0x95, 0x71, 0x25, 0xec, 0xc3, 0x82, 0xec, 0x65, 0xe3, 0x6f, 0x81,
|
|
|
|
|
0x7d, 0xc7, 0x99, 0xfb,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xca, 0x50, 0x0a, 0x54, 0x41, 0xf3, 0x6f, 0x4d, 0xf6, 0x73, 0xd6, 0xb8, 0xed, 0x07,
|
|
|
|
|
0x5d, 0x36, 0xda, 0xe2, 0xc7, 0xe6, 0x48, 0x14, 0x28, 0xc7, 0x0a, 0x5a, 0x76, 0xb7,
|
|
|
|
|
0xa9, 0xbe, 0xbc, 0xe8,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0x42, 0x2b, 0x6d, 0xdd, 0x47, 0x32, 0x31, 0xdc, 0x4d, 0x56, 0xfe, 0x91, 0x34, 0x44,
|
|
|
|
|
0xcc, 0xd5, 0x6f, 0x7c, 0x61, 0xf7, 0x47, 0xba, 0x57, 0xca, 0x94, 0x6d, 0x5f, 0xef,
|
|
|
|
|
0x72, 0xd8, 0x40, 0xa0,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xab, 0x41, 0xf4, 0xec, 0xb7, 0xd7, 0x08, 0x96, 0x15, 0x80, 0x0e, 0x19, 0xfc, 0xc5,
|
|
|
|
|
0x3b, 0x83, 0x79, 0xed, 0x05, 0xee, 0x35, 0xc8, 0x25, 0x67, 0x09, 0x55, 0x83, 0xfd,
|
|
|
|
|
0x90, 0xff, 0x30, 0x35,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xbb, 0xf7, 0x61, 0x82, 0x48, 0x35, 0x4c, 0xeb, 0x1b, 0xc1, 0xfc, 0x9d, 0xbc, 0x42,
|
|
|
|
|
0xc4, 0x26, 0xa4, 0xe2, 0xc1, 0xe0, 0xd4, 0x43, 0xc5, 0x68, 0x3a, 0x92, 0x56, 0xc6,
|
|
|
|
|
0x2e, 0xcd, 0xc2, 0x6f,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xe5, 0x0a, 0xe7, 0x14, 0x79, 0xfc, 0x8e, 0xc5, 0x69, 0x19, 0x2a, 0x13, 0x07, 0x2e,
|
|
|
|
|
0x01, 0x1a, 0xfc, 0x24, 0x9f, 0x47, 0x1a, 0xf0, 0x95, 0x00, 0xea, 0x39, 0xf7, 0x5d,
|
|
|
|
|
0x0a, 0xf8, 0x56, 0xbf,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xe7, 0x4c, 0x0b, 0x92, 0x20, 0x14, 0x7d, 0xb2, 0xd5, 0x0a, 0x3b, 0x58, 0xd4, 0x13,
|
|
|
|
|
0x77, 0x5d, 0x16, 0xc9, 0x84, 0x69, 0x0b, 0xe7, 0xd9, 0x0f, 0x0b, 0xc4, 0x3d, 0x99,
|
|
|
|
|
0xdb, 0xa1, 0xb6, 0x89,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0x29, 0x32, 0x4a, 0x0a, 0x48, 0xd1, 0x16, 0x57, 0xa5, 0x1b, 0xa0, 0x8b, 0x00, 0x48,
|
|
|
|
|
0x79, 0xbf, 0xcf, 0xc6, 0x6a, 0x1a, 0xcb, 0x7c, 0xe3, 0x6d, 0xfe, 0x47, 0x8d, 0x26,
|
|
|
|
|
0x55, 0x48, 0x4b, 0x48,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0x88, 0x95, 0x2e, 0x3d, 0x0a, 0xc0, 0x6c, 0xb1, 0x6b, 0x66, 0x52, 0x01, 0x12, 0x22,
|
|
|
|
|
0x49, 0x65, 0x9a, 0x22, 0x32, 0x5e, 0x01, 0xc8, 0x70, 0xf4, 0x9e, 0x29, 0xda, 0x6b,
|
|
|
|
|
0x17, 0x57, 0xe0, 0x82,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xcd, 0xf8, 0x79, 0xf2, 0x43, 0x5b, 0x95, 0xaf, 0x04, 0x2a, 0x3b, 0xf7, 0xb8, 0x50,
|
|
|
|
|
0xf7, 0x81, 0x92, 0x46, 0xc8, 0x05, 0x28, 0x58, 0x03, 0xd6, 0x7f, 0xfb, 0xf4, 0xf2,
|
|
|
|
|
0x95, 0xbe, 0xd0, 0x04,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xe0, 0x05, 0xe3, 0x24, 0x20, 0x0b, 0x4f, 0x42, 0x8c, 0x62, 0xbc, 0x33, 0x31, 0xe6,
|
|
|
|
|
0x95, 0xc3, 0x73, 0x60, 0x7c, 0xd0, 0xfa, 0xa9, 0x79, 0x03, 0x41, 0xfa, 0x3b, 0xa1,
|
|
|
|
|
0xed, 0x22, 0x8b, 0xc5,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0x35, 0x44, 0x47, 0x72, 0x7a, 0xa9, 0xa5, 0x3d, 0xd8, 0x34, 0x5b, 0x6b, 0x6c, 0x69,
|
|
|
|
|
0x34, 0x43, 0xe5, 0x6e, 0xf4, 0xae, 0xba, 0x13, 0xc4, 0x10, 0x17, 0x9f, 0xc8, 0x58,
|
|
|
|
|
0x9e, 0x77, 0x33, 0xd5,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xda, 0x52, 0xdd, 0xa9, 0x1f, 0x28, 0x29, 0xc1, 0x5c, 0x0e, 0x58, 0xd2, 0x9a, 0x95,
|
|
|
|
|
0x36, 0x0b, 0x86, 0xab, 0x30, 0xcf, 0x0c, 0xac, 0x81, 0x01, 0x83, 0x2a, 0x29, 0xf3,
|
|
|
|
|
0x8c, 0x31, 0x85, 0xf1,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xc7, 0xda, 0x78, 0x14, 0xe2, 0x28, 0xe1, 0x14, 0x44, 0x11, 0xd7, 0x8b, 0x53, 0x60,
|
|
|
|
|
0x92, 0xfe, 0x92, 0x0b, 0xcd, 0xfc, 0xc3, 0x6c, 0xf1, 0x9d, 0x12, 0x59, 0x04, 0x7b,
|
|
|
|
|
0x26, 0x7d, 0x58, 0xb5,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xab, 0xa1, 0xf6, 0x8b, 0x6c, 0x2b, 0x4d, 0xb6, 0xcc, 0x06, 0xa7, 0x34, 0x0e, 0x12,
|
|
|
|
|
0x31, 0x3c, 0x4b, 0x4a, 0x4e, 0xa6, 0xde, 0xb1, 0x7d, 0xeb, 0x3e, 0x1e, 0x66, 0xcd,
|
|
|
|
|
0x8e, 0xac, 0xf3, 0x2b,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xc1, 0x60, 0xae, 0x4f, 0x64, 0xab, 0x76, 0x4d, 0x86, 0x4a, 0x52, 0xad, 0x5e, 0x33,
|
|
|
|
|
0x12, 0x6c, 0x4b, 0x5c, 0xe1, 0x05, 0xa4, 0x7d, 0xee, 0xdd, 0x75, 0xbc, 0x70, 0x19,
|
|
|
|
|
0x9a, 0x52, 0x47, 0xef,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0xea, 0xdf, 0x23, 0xfc, 0x99, 0xd5, 0x14, 0xdd, 0x8e, 0xa2, 0x04, 0xd2, 0x23, 0xe9,
|
|
|
|
|
0x8d, 0xa9, 0x88, 0x83, 0x1f, 0x9b, 0x5d, 0x19, 0x40, 0x27, 0x4c, 0xa5, 0x20, 0xb7,
|
|
|
|
|
0xfb, 0x17, 0x3d, 0x8a,
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
0x5b, 0x8e, 0x14, 0xfa, 0xca, 0xc8, 0xa7, 0xc7, 0xa3, 0xbf, 0xee, 0x8b, 0xae, 0x71,
|
|
|
|
|
0xf2, 0xf7, 0x79, 0x3d, 0x3a, 0xd5, 0xfe, 0x33, 0x83, 0xf9, 0x3a, 0xb6, 0x06, 0x1f,
|
|
|
|
|
0x2a, 0x11, 0xbb, 0x02,
|
|
|
|
|
],
|
2020-09-24 20:46:20 -07:00
|
|
|
|
];
|
|
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
|
fn empty_roots() {
|
|
|
|
|
for i in 0..EMPTY_ROOTS.len() {
|
2020-09-24 22:13:32 -07:00
|
|
|
|
println!("computed root: {:?}", hex::encode(EMPTY_ROOTS[i]));
|
|
|
|
|
println!("precomputed root: {:?}", hex::encode(HEX_EMPTY_ROOTS[i]));
|
2020-09-24 20:46:20 -07:00
|
|
|
|
|
2020-09-24 22:13:32 -07:00
|
|
|
|
assert_eq!(EMPTY_ROOTS[i], HEX_EMPTY_ROOTS[i]);
|
2020-09-24 20:46:20 -07:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
|
fn incremental_roots() {
|
|
|
|
|
// From https://github.com/zcash/zcash/blob/master/src/test/data/merkle_commitments.json
|
|
|
|
|
// Byte-reversed (?) from those ones because the original test vectors are loaded using uint256S()
|
|
|
|
|
let commitments = [
|
|
|
|
|
"bab6e8992959caf0ca94847c36b4e648a7f88a9b9c6a62ea387cf1fb9badfd62",
|
|
|
|
|
"43c9a4b21555b832a79fc12ce27a97d4f4eca1638e7161a780db1d5ebc35eb68",
|
|
|
|
|
"fb92a6142315bb3396b693222bf2d0e260b448cda74e189063cf774048456083",
|
|
|
|
|
"e44a57cd544018937680d385817be3a3e35bb5b87ceeea93d536ea95828a4992",
|
|
|
|
|
"43f48bfb9ab6f12ef91ce83e8f9190ce5dff2721784c90e08a50a67403367cff",
|
|
|
|
|
"fce910561c3c7ebf14ed5d712e6838cdc6f1145c87eec256b7181f9df6d0c468",
|
|
|
|
|
"b1e7016392805b227b11e58ba629f9a6684a0b4c34306e85e47548c43ecd168b",
|
|
|
|
|
"2d9a49d9425449a449cc62d16febaf9c7f8b32349752ecc39191c36130b4c050",
|
|
|
|
|
"53969b31a862b893dde857b8b7d4f53ce0e2c21a0f70d48ba1aef3a05fddff70",
|
|
|
|
|
"17f8fabd440fdf9e2eafd75a3407e8bbde048d2d2232cd803d5763004af61ed8",
|
|
|
|
|
"9b7805cb5e8ef337c13c73cab58ee719bf33a4a80ecc161bfe714269eca4928b",
|
|
|
|
|
"a3ebada94d4329899ae136391604799d8cea39c0c331f9aaaa4a1e73ab63e904",
|
|
|
|
|
"12091a20c9ebe67c2793bb71a6fdddb0ffe3ca781fcf1e192428161f186c3fbe",
|
|
|
|
|
"e9c65749638df548b8909c0ea1d0f79079a6bb3235c649a8806322c87f968018",
|
|
|
|
|
"8e8fddf0438a4263bc926fcfa6733dc201633959f294103533a2cb9328bb65c4",
|
|
|
|
|
"206a202bd08dd31f77afc7114b17850192b83948cff5828df0d638cbe734c884",
|
|
|
|
|
];
|
|
|
|
|
|
|
|
|
|
// From https://github.com/zcash/zcash/blob/master/src/test/data/merkle_roots.json
|
|
|
|
|
let roots = [
|
|
|
|
|
"95bf71d8e803b8601c14b5949d0f92690181154ef9d82eb3e24852266823317a",
|
|
|
|
|
"73f18d3f9cd11010aa01d4f444039e566f14ef282109df9649b2eb75e7a53ed1",
|
|
|
|
|
"dcde8a273c9672bee1a894d7f7f4abb81078f52b498e095f2a87d0aec5addf25",
|
|
|
|
|
"4677d481ec6d1e97969afbc530958d1cbb4f1c047af6fdad4687cd10830e02bd",
|
|
|
|
|
"74cd9d82de30c4222a06d420b75522ae1273729c1d8419446adf1184df61dc69",
|
|
|
|
|
"2ff57f5468c6afdad30ec0fb6c2cb67289f12584e2c20c4e0065f66748697d77",
|
|
|
|
|
"27e4ce010670801911c5765a003b15f75cde31d7378bd36540f593c8a44b3011",
|
|
|
|
|
"62231ef2ec8c4da461072871ab7bc9de10253fcb40e164ddbad05b47e0b7fb69",
|
|
|
|
|
"733a4ce688fdf07efb9e9f5a4b2dafff87cfe198fbe1dff71e028ef4cdee1f1b",
|
|
|
|
|
"df39ed31924facdd69a93db07311d45fceac7a4987c091648044f37e6ecbb0d2",
|
|
|
|
|
"87795c069bdb55281c666b9cb872d13174334ce135c12823541e9536489a9107",
|
|
|
|
|
"438c80f532903b283230446514e400c329b29483db4fe9e279fdfc79e8f4347d",
|
|
|
|
|
"08afb2813eda17e94aba1ab28ec191d4af99283cd4f1c5a04c0c2bc221bc3119",
|
|
|
|
|
"a8b3ab3284f3288f7caa21bd2b69789a159ab4188b0908825b34723305c1228c",
|
|
|
|
|
"db9b289e620de7dca2ae8fdac96808752e32e7a2c6d97ce0755dcebaa03123ab",
|
|
|
|
|
"0bf622cb9f901b7532433ea2e7c1b7632f5935899b62dcf897a71551997dc8cc",
|
|
|
|
|
];
|
|
|
|
|
|
|
|
|
|
let mut leaves = vec![];
|
|
|
|
|
|
|
|
|
|
for (i, cm) in commitments.iter().enumerate() {
|
|
|
|
|
let mut bytes = [0u8; 32];
|
2020-09-24 22:13:32 -07:00
|
|
|
|
let _ = hex::decode_to_slice(cm, &mut bytes);
|
2020-09-24 20:46:20 -07:00
|
|
|
|
leaves.push(NoteCommitment::from(bytes));
|
|
|
|
|
|
|
|
|
|
let tree = NoteCommitmentTree::from(leaves.clone());
|
|
|
|
|
|
|
|
|
|
assert_eq!(hex::encode(tree.hash()), roots[i]);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|