diff --git a/backend/tls_utils.py b/backend/tls_utils.py
new file mode 100644
index 0000000000000000000000000000000000000000..8e6ae78ef00284f356c46dac20096e38151e58d4
--- /dev/null
+++ b/backend/tls_utils.py
@@ -0,0 +1,37 @@
+#!/usr/bin/env python3
+from rich.console import Console
+import datetime
+import math
+
+class TLSDetails:
+    domain_name = None
+    expires_in_days = None
+    error_message = None
+
+    def __init__(self, domain_name : str = None, expires_in_days : str = None, error_message : str = None):
+        self.domain_name = domain_name
+        self.expires_in_days = expires_in_days
+        self.error_message = error_message
+    
+    def print(self, console: Console):
+        if self.error_message != None:
+            console.log("[red bold underline]" + self.domain_name, self.error_message, style="red")
+        elif self.expires_in_days < 0:
+            console.log("[red bold underline]" + self.domain_name, "expired", abs(self.expires_in_days), "days ago.", style="red")
+        else:
+            console.log("[green bold underline]" + self.domain_name, "expires in", self.expires_in_days, "days", style="green")
+
+def get_expiry_timestamps(expiry_timestamp: int, now_timestamp: int = datetime.datetime.now().timestamp()) -> tuple[bool, int]:
+    seconds_left = expiry_timestamp - now_timestamp
+    days_left = math.floor(seconds_left / 86400)
+    return (seconds_left >= 0, days_left)
+
+def get_validity_days(cert) -> tuple[bool, int]:
+    # Get expiry date
+    notAfter = cert['notAfter']
+    notAfter_date = datetime.datetime.strptime(notAfter, '%b %d %H:%M:%S %Y %Z')
+
+    # datetime to UNIX time
+    notAfter_timestamp = notAfter_date.timestamp()
+    expiry = get_expiry_timestamps(notAfter_timestamp)
+    return (expiry[0], abs(expiry[1]))
\ No newline at end of file