fix: commnets fix cleanup

nssa/src/encoding/privacy_preserving_transaction.rs

@@ -1,10 +1,12 @@
 use std::io::{Cursor, Read};
 
 use nssa_core::{
-    Commitment, Nullifier,
+    Commitment, Nullifier, PrivacyPreservingCircuitOutput,
     account::Account,
     encryption::{Ciphertext, EphemeralPublicKey},
 };
+use program_methods::PRIVACY_PRESERVING_CIRCUIT_ID;
+use risc0_zkvm::{InnerReceipt, Receipt};
 
 use crate::{
     Address, PrivacyPreservingTransaction, PublicKey, Signature,
@@ -224,3 +226,40 @@ impl PrivacyPreservingTransaction {
         Ok(PrivacyPreservingTransaction::new(message, witness_set))
     }
 }
+
+impl Proof {
+    pub(crate) fn is_valid_for(&self, circuit_output: &PrivacyPreservingCircuitOutput) -> bool {
+        let inner: InnerReceipt = borsh::from_slice(&self.0).unwrap();
+        let receipt = Receipt::new(inner, circuit_output.to_bytes());
+        receipt.verify(PRIVACY_PRESERVING_CIRCUIT_ID).is_ok()
+    }
+
+    pub fn to_bytes(&self) -> Vec<u8> {
+        let mut bytes = Vec::new();
+        let proof_len = self.0.len() as u32;
+        bytes.extend_from_slice(&proof_len.to_le_bytes());
+        bytes.extend_from_slice(&self.0);
+        bytes
+    }
+
+    pub fn from_cursor(cursor: &mut Cursor<&[u8]>) -> Result<Self, NssaError> {
+        let proof_len = u32_from_cursor(cursor) as usize;
+        let mut proof = Vec::with_capacity(proof_len);
+
+        for _ in 0..proof_len {
+            let mut one_byte_buf = [0u8];
+
+            cursor.read_exact(&mut one_byte_buf)?;
+
+            proof.push(one_byte_buf[0]);
+        }
+        Ok(Self(proof))
+    }
+}
+
+// TODO: Improve error handling. Remove unwraps.
+pub fn u32_from_cursor(cursor: &mut Cursor<&[u8]>) -> u32 {
+    let mut word_buf = [0u8; 4];
+    cursor.read_exact(&mut word_buf).unwrap();
+    u32::from_le_bytes(word_buf)
+}

nssa/src/privacy_preserving_transaction/circuit.rs

@@ -1,57 +1,18 @@
-use std::io::{Cursor, Read};
-
 use nssa_core::{
     MembershipProof, NullifierPublicKey, NullifierSecretKey, PrivacyPreservingCircuitInput,
     PrivacyPreservingCircuitOutput, SharedSecretKey,
     account::AccountWithMetadata,
     program::{InstructionData, ProgramOutput},
 };
-use risc0_zkvm::{ExecutorEnv, InnerReceipt, Receipt, default_prover};
+use risc0_zkvm::{ExecutorEnv, Receipt, default_prover};
 
 use crate::{error::NssaError, program::Program};
 
-use program_methods::{PRIVACY_PRESERVING_CIRCUIT_ELF, PRIVACY_PRESERVING_CIRCUIT_ID};
+use program_methods::PRIVACY_PRESERVING_CIRCUIT_ELF;
 
 /// Proof of the privacy preserving execution circuit
 #[derive(Debug, Clone, PartialEq, Eq)]
-pub struct Proof(pub(super) Vec<u8>);
-
-impl Proof {
-    pub(crate) fn is_valid_for(&self, circuit_output: &PrivacyPreservingCircuitOutput) -> bool {
-        let inner: InnerReceipt = borsh::from_slice(&self.0).unwrap();
-        let receipt = Receipt::new(inner, circuit_output.to_bytes());
-        receipt.verify(PRIVACY_PRESERVING_CIRCUIT_ID).is_ok()
-    }
-
-    pub fn to_bytes(&self) -> Vec<u8> {
-        let mut bytes = Vec::new();
-        let proof_len = self.0.len() as u32;
-        bytes.extend_from_slice(&proof_len.to_le_bytes());
-        bytes.extend_from_slice(&self.0);
-        bytes
-    }
-
-    pub fn from_cursor(cursor: &mut Cursor<&[u8]>) -> Result<Self, NssaError> {
-        let proof_len = u32_from_cursor(cursor) as usize;
-        let mut proof = Vec::with_capacity(proof_len);
-
-        for _ in 0..proof_len {
-            let mut one_byte_buf = [0u8];
-
-            cursor.read_exact(&mut one_byte_buf)?;
-
-            proof.push(one_byte_buf[0]);
-        }
-        Ok(Self(proof))
-    }
-}
-
-// TODO: Improve error handling. Remove unwraps.
-pub fn u32_from_cursor(cursor: &mut Cursor<&[u8]>) -> u32 {
-    let mut word_buf = [0u8; 4];
-    cursor.read_exact(&mut word_buf).unwrap();
-    u32::from_le_bytes(word_buf)
-}
+pub struct Proof(pub(crate) Vec<u8>);
 
 /// Generates a proof of the execution of a NSSA program inside the privacy preserving execution
 /// circuit