sts/keygen.sts


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defword keygen
    ; Increment
    0
    do
    over over = until
        dup 2 + get
        dup ff < if
            1 + over 2 + set
            drop
            exit
        fi
        drop 0 over 2 + set
        1 +
    od
    drop

    ; Clean old stack data
    dup
    do
    dup 0 = until
        1 get 2 set swap drop
        1 -
    od
    drop

    1 +
    0
    do
    over over = until
        dup 2 get 1 set 0 2 set
        1 +
    od
    drop
exit