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#139 "Unlock" button disappears

strange
open
5
2005-02-28
2005-02-26
Ken Mankoff
No

When I enter my password and tap "Unlock", it
disappears for about 1 to 2 seconds. Maybe this is
while the decryption is occuring? I chose 1000 and
AES-256. I have a Zire 72 (pretty fast processor).

Discussion

  • Jochen Hoenicke

    Jochen Hoenicke - 2005-02-28

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    The button disappears while keyring checks the password.
    This takes some time due to the 1000 iterations of HMAC-SHA1
    that are used (that are used to prevent brute-force
    attacks). You can lower the iteration count, if you feel
    uncomfortable with that delay.

    It would be useful to have an ARM implementation of sha-1
    and pbkdf2. The code is easy to separate. I have no ARM
    based palm, so I can't implement this myself.

     
  • Jochen Hoenicke

    Jochen Hoenicke - 2005-02-28
    • assigned_to: nobody --> hoenicke
     
  • Ken Mankoff

    Ken Mankoff - 2005-02-28

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    One possible solution would be to have a 2nd "Unlock"
    button. Same place, same size. The first line of the real
    unlock event handler could be to draw that button. The last
    line could be to hide it.

     
  • Jochen Hoenicke

    Jochen Hoenicke - 2005-02-28

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    user_id=18252

    I'm not sure what you meant by the last comment. The unlock button
    is explicitly hidden, so that the user knows, that the palm is busy and
    doesn't tap the button again.

    Maybe it's useful to display "checking..." at the place where the button
    was, so that it is clear what is going on.

     
  • Ken Mankoff

    Ken Mankoff - 2005-03-01

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    user_id=192791

    I didn't realize you explicitely hid the button. Ignore my
    last (not understood) comment. I would love to see
    "checking..." or something else. Anything else, just some
    user feedback to let me know it is thinking, not frozen or
    buggy or something bad.

     

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