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-rwxr-xr-xcrack-otp.py11
1 files changed, 10 insertions, 1 deletions
diff --git a/crack-otp.py b/crack-otp.py
index ea958bd..2d27fb9 100755
--- a/crack-otp.py
+++ b/crack-otp.py
@@ -29,6 +29,15 @@ activation = activation[0:-1] # remove last digit -- check digit
activationbytes = int(activation).to_bytes(7, byteorder='big')
logging.info("Activation bytes: 0x%s", activationbytes.hex())
+# Determine the number of digits in the OTP and set the format accordingly
+digitlen = len(args.OTP[0])
+if digitlen == 6:
+ digitformat = "dec6"
+elif digitlen == 8:
+ digitformat = "dec8"
+else:
+ logging.fatal("Failed to determine format of OTP.")
+
keys = []
timeToSearch = []
@@ -68,7 +77,7 @@ for otpTime in timeToSearch:
)
# Verify whether the output is valid for the given time
- otp = totp(key.hex(), hash=hashlib.sha256, t=otpTime)
+ otp = totp(key.hex(), hash=hashlib.sha256, t=otpTime, format=digitformat)
if otp == args.OTP[0]:
print("Possibe valid OTP seed found: ", key.hex())