Add service.utils with splitPrivateData and isValid32ByteHex

src/utils/service.utils.ts

@@ -0,0 +1,24 @@
+export function splitPrivateData(data: Record<string, any>, privateFields: string[]): { privateData: Record<string, any>, publicData: Record<string, any> } {
+  const privateData: Record<string, any> = {};
+  const publicData: Record<string, any> = {};
+
+  for (const [key, value] of Object.entries(data)) {
+    if (privateFields.includes(key)) {
+      privateData[key] = value;
+    } else {
+      publicData[key] = value;
+    }
+  }
+
+  return { privateData, publicData };
+}
+
+export function isValid32ByteHex(value: string): boolean {
+  // Check if string is exactly 64 characters (32 bytes in hex)
+  if (value.length !== 64) {
+    return false;
+  }
+  
+  // Check if string only contains valid hex characters
+  return /^[0-9a-fA-F]{64}$/.test(value);
+}