diff --git a/util/auth.py b/util/auth.py
new file mode 100644
index 0000000..fad2262
--- /dev/null
+++ b/util/auth.py
@@ -0,0 +1,37 @@
+from Crypto.PublicKey import RSA
+import binascii
+import random
+import requests
+import os
+
+def verfiyKey(key: str):
+    try:
+        if len(key) < 750:
+            return False
+        RSA.importKey(binascii.unhexlify(key))
+        # .publickey().exportKey('PEM')
+        return True
+    except:
+        return False
+
+
+# function for otp generation
+def otpgen():
+    otp=""
+    for i in range(4):
+        otp+=str(random.randint(1,9))
+    return otp
+
+
+def SendOtp(mail, frm):
+    otp=otpgen()
+    requests.post(
+        "https://api.eu.mailgun.net/v3/account.vote-chain.tech/messages",
+        auth=("api", os.environ.get('mailGunAPI')),
+        data={"from": "VoteChain verification <{}@account.vote-chain.tech>".format(frm),
+              "to": [mail],
+              "subject": "Account verification | VoteChain",
+              "template": "otpsend",
+              "v:otp":otp})
+    return otp
+Footer