refactor: improve error handling in hex parsing and clean up debug logs

Author: nabil-Tounarti

post-compute/src/compute/utils/hash_utils.rs

@@ -4,7 +4,6 @@ use sha256::{Sha256Digest, digest};
 pub fn concatenate_and_hash(hexa_strings: &[&str]) -> String {
     let mut hasher = Keccak256::default();
     for hexa_string in hexa_strings {
-        println!("value {hexa_string}");
         hasher.update(hex_string_to_byte_array(hexa_string));
     }
     format!("0x{:x}", hasher.finalize())
@@ -19,15 +18,19 @@ pub fn hex_string_to_byte_array(input: &str) -> Vec<u8> {
 
     let mut data: Vec<u8> = vec![];
     let start_idx = if len % 2 != 0 {
-        let byte = u8::from_str_radix(&clean_input[0..1], 16).expect("");
+        let byte =
+            u8::from_str_radix(&clean_input[0..1], 16).expect("Invalid hex digit in input string");
         data.push(byte);
         1
     } else {
         0
     };
 
     for i in (start_idx..len).step_by(2) {
-        data.push(u8::from_str_radix(&clean_input[i..i + 2], 16).expect(""));
+        data.push(
+            u8::from_str_radix(&clean_input[i..i + 2], 16)
+                .expect("Invalid hex digit in input string"),
+        );
     }
 
     data

pre-compute/src/compute/signer.rs

@@ -45,7 +45,7 @@ pub fn sign_enclave_challenge(
 ) -> Result<String, ReplicateStatusCause> {
     let signer: PrivateKeySigner = enclave_challenge_private_key
         .parse::<PrivateKeySigner>()
-        .map_err(|_| ReplicateStatusCause::PreComputeWorkerAddressMissing)?;
+        .map_err(|_| ReplicateStatusCause::PreComputeTeeChallengePrivateKeyMissing)?;
 
     let signature: Signature = signer
         .sign_message_sync(&hex_string_to_byte_array(message_hash))

pre-compute/src/compute/utils/hash_utils.rs

@@ -4,7 +4,6 @@ use sha256::digest;
 pub fn concatenate_and_hash(hexa_strings: &[&str]) -> String {
     let mut hasher = Keccak256::default();
     for hexa_string in hexa_strings {
-        println!("value {hexa_string}");
         hasher.update(hex_string_to_byte_array(hexa_string));
     }
     format!("0x{:x}", hasher.finalize())