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Productivity · SKILL.md

hotp

hotp

HOTP (RFC 4226) HMAC-based one-time password reference. Counter- based OTP for hardware tokens. Covers algorithm step-by-step, Python implementation from scratch, pyotp/otpauth libraries, counter synchronization, resync protocol, look-ahead window, and security considerations vs TOTP.

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Bbytesagain / ai-skillsNOASSERTION

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