Enhance encryption security with additional safeguards.

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

app/utils/aws.ts

@@ -10,7 +10,7 @@ type ParsedEvent = Record<string, any>;
 type EventResult = ParsedEvent[];
 
 // Using a dot as separator since it's not used in Base64
-const SEPARATOR = ".";
+const SEPARATOR = "~";
 
 // Unified crypto utilities for both frontend and backend
 async function generateKey(
@@ -85,7 +85,7 @@ export async function encrypt(
 
     return [saltBase64, ivBase64, encryptedBase64].join(SEPARATOR);
   } catch (error) {
-    console.error("[Encryption Error]:", error);
+    // console.error("[Encryption Error]:", error);
     throw new Error("Failed to encrypt AWS credentials");
   }
 }
@@ -121,7 +121,6 @@ export async function decrypt(
     const dec = new TextDecoder();
     return dec.decode(decrypted);
   } catch (error) {
-    console.error("[Decryption Error]:", error);
     throw new Error("Failed to decrypt AWS credentials");
   }
 }
@@ -610,9 +609,18 @@ export function processChunks(
         chunks.shift();
       }
     } catch (e) {
-      console.error("[Chunk Process Error]:", e);
-      chunks.shift(); // Remove error chunk
-      pendingChunk = null; // Reset pending chunk on error
+      // console.error("[Chunk Process Error]:", e);
+      // chunks.shift(); // Remove error chunk
+      // pendingChunk = null; // Reset pending chunk on error
+      console.warn("Failed to process chunk, attempting recovery");
+      // Attempt to recover by processing the next chunk
+      if (chunks.length > 1) {
+        chunks.shift();
+        pendingChunk = null;
+      } else {
+        // If this is the last chunk, throw to prevent data loss
+        throw new Error("Failed to process final chunk");
+      }
     }
   }