totp ( key -- string )
Time-Based One-Time Passwords

Prev:	totp-digits
Next:	timestamp>count* ( timestamp secs/count -- count )

Vocabulary
totp

Inputs

key

an object

Outputs

string

a string

Word description
Generate a one-time password for the key based on the current system time. If key is a string, it is expected to contain the key data in Base 32 encoding, otherwise it should be a byte-array. The string length is totp-digits, and the hash used for HMAC is totp-hash.

See also
totp*

Definition

USING: base32 calendar kernel namespaces sequences strings
unicode ;

IN: totp

: totp ( key -- string )
    dup string? [ 32 swap remove >upper base32> ] when
    now timestamp>count swap totp-hash get totp*
    totp-digits get digits ;