NDT Toolkits
Command
⌘/Ctrl
K
☀️
🌙
HOTP Generator
Secret (Base32) or otpauth://hotp URI *
Counter
++
Digits
6
7
8
Algorithm
SHA1
SHA256
SHA512
Generate
HOTP
000000
counter=
0
Copy
Download JSON
HOTP is event-based; use “++” to advance counter then generate again.