Password authentication apparatus and password authentication method
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United States of America Patent
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Nov 6, 2012
Grant Date -
Jan 21, 2010
app pub date -
Jan 15, 2009
filing date -
Jul 17, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A password authentication apparatus and a password authentication method for preventing the leakage of password information from user's password input operations includes a memory device for storing a correct answer symbol and selection information for selecting at least one input symbol for each digit of a password; a display for displaying combinations of input symbol candidates based on user operation; a processor for selecting, for each digit of the password, one or more input symbols from the combinations of input symbol candidates displayed by the display based on the selection information corresponding to the digit to determine whether the correct answer symbol corresponding to the digit is included in the selected one or more input symbols; and an authentication board for authenticating that the password is entered correctly when the processor determines that correct answer symbols for all the digits of the password are included.
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