Unverified50% confidenceFactExact time
TOTP is defined in RFC 6238 and is a time-dimension extension of HOTP (RFC 4226); it is computed by dividing the current Unix timestamp by the time step to obtain a counter C, then computing HMAC-SHA1(K, C), extracting a 31-bit integer via dynamic truncation, and taking the result modulo 10^6 to obtain a 6-digit verification code.
1
Sources
50%
Confidence
Long-term
Relevance
10/19/2026
First Seen
Sources
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