goas/ledger: move prove_input to ProvedInput::prove

goas/cl/ledger/src/input.rs

@@ -10,35 +10,7 @@ pub struct ProvedInput {
 }
 
 impl ProvedInput {
-    pub fn verify(&self) -> bool {
-        self.proof.verify(&self.input)
-    }
-}
-
-#[derive(Debug, Clone)]
-pub struct InputProof {
-    receipt: risc0_zkvm::Receipt,
-}
-
-impl InputProof {
-    pub fn public(&self) -> Result<InputPublic> {
-        Ok(self.receipt.journal.decode()?)
-    }
-
-    pub fn verify(&self, expected_public_inputs: &InputPublic) -> bool {
-        let Ok(public_inputs) = self.public() else {
-            return false;
-        };
-
-        &public_inputs == expected_public_inputs
-            && self.receipt.verify(nomos_cl_risc0_proofs::INPUT_ID).is_ok()
-    }
-}
-
-pub fn prove_input(
-    input: cl::InputWitness,
-    note_commitments: &[cl::NoteCommitment],
-) -> ProvedInput {
+    pub fn prove(input: cl::InputWitness, note_commitments: &[cl::NoteCommitment]) -> Self {
         let output_cm = input.to_output().commit_note();
 
         let cm_leaves = note_commitment_leaves(note_commitments);
@@ -77,13 +49,38 @@ pub fn prove_input(
         // extract the receipt.
         let receipt = prove_info.receipt;
 
-    ProvedInput {
+        Self {
             input: InputPublic {
                 cm_root: cl::merkle::root(cm_leaves),
                 input: input.commit(),
             },
             proof: InputProof { receipt },
         }
+    }
+
+    pub fn verify(&self) -> bool {
+        self.proof.verify(&self.input)
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct InputProof {
+    receipt: risc0_zkvm::Receipt,
+}
+
+impl InputProof {
+    pub fn public(&self) -> Result<InputPublic> {
+        Ok(self.receipt.journal.decode()?)
+    }
+
+    pub fn verify(&self, expected_public_inputs: &InputPublic) -> bool {
+        let Ok(public_inputs) = self.public() else {
+            return false;
+        };
+
+        &public_inputs == expected_public_inputs
+            && self.receipt.verify(nomos_cl_risc0_proofs::INPUT_ID).is_ok()
+    }
 }
 
 fn note_commitment_leaves(note_commitments: &[cl::NoteCommitment]) -> [[u8; 32]; MAX_NOTE_COMMS] {
@@ -112,7 +109,7 @@ mod test {
 
         let notes = vec![input.to_output().commit_note()];
 
-        let proved_input = prove_input(input, &notes);
+        let proved_input = ProvedInput::prove(input, &notes);
 
         let expected_public_inputs = InputPublic {
             cm_root: cl::merkle::root(note_commitment_leaves(&notes)),