OTP code generator

Generate and validate time-based and event-based OTP (one time password) for multi-factor authentication.

Secret

Secret in hexadecimal

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Start-value for HOTP counter

HOTP 0:

HOTP 1:

HOTP 2:

HOTP 3:

HOTP 4:

HOTP 5:

HOTP 6:

HOTP 7:

HOTP 8:

HOTP 9:

Epoch

Iteration

Count:

Padded hex:

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