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Add merkle_root to ProcessState and update new()

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This commit is contained in:
Sosthene 2024-12-11 23:25:11 +01:00
parent 5be3340aad
commit 2db9b29e6b
1 changed files with 11 additions and 4 deletions
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15
src/process.rs
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@ -20,6 +20,7 @@ use crate::{
pub struct ProcessState {
pub commited_in: OutPoint,
pub pcd_commitment: Value, // If we can't modify a field, we just copy the previous value
pub merkle_root: String, // the root of the tree created with all the commitments. Serves as an unique id for a state too
pub encrypted_pcd: Value, // Some fields may be clear, if the owner of the process decides so
pub keys: Map<String, Value>, // We may not always have all the keys
pub validation_tokens: Vec<Proof>, // Signature of the hash of the encrypted pcd tagged with some decision like "yes" or "no"
@ -31,14 +32,20 @@ impl ProcessState {
let mut encrypted = Map::new();
let clear_pcd = Value::Object(clear_state);
let commitments = clear_pcd.hash_all_fields(commited_in)?;
let sorted_pcd = Value::Object(clear_pcd.to_sorted_key_values()?);
let keys_to_encrypt: Vec<String> = commitments.keys().map(|k| k.clone()).collect();
clear_pcd.encrypt_fields(&keys_to_encrypt, &mut keys, &mut encrypted)?;
let pcd_commitment = Value::Object(sorted_pcd.hash_all_fields(commited_in)?);
let merkle_root = pcd_commitment.create_merkle_tree()?.root().ok_or(anyhow::Error::msg("Invalid merkle tree"))?.to_lower_hex_string();
let keys_to_encrypt: Vec<String> = pcd_commitment.as_object().unwrap().keys().map(|k| k.clone()).collect();
sorted_pcd.encrypt_fields(&keys_to_encrypt, &mut keys, &mut encrypted)?;
let res = Self {
commited_in,
pcd_commitment: Value::Object(commitments),
pcd_commitment,
merkle_root,
encrypted_pcd: Value::Object(encrypted),
keys,
validation_tokens: vec![],