Abstract: The present invention relates to a method for safely managing confidential data and a security authentication method and system for performing a security authentication by using the confidential data. The method for managing confidential data of a user by linking with a security server which stores a decryption key in a confidential data management device, according to the present invention, comprises the steps of: storing encrypted confidential data of a user; receiving a push notification message including a decryption key from the security server, if a use of the confidential data is required; and decrypting the encrypted confidential data by using the decryption key included in the push notification message.

Abstract: A password input device comprises a storage unit for storing character strings according to each icon; an input window generation unit for generating and displaying an input window on which a plurality of icons are arranged; a secret icon recognition unit which confirms a shift coordinate value and recognizes icons, which are arranged on coordinates inversely moved up to the shift coordinate value from a coordinate value at which a selected icon is arranged, as secret icons selected by the user if the user selects the icon; and an authentication processing unit which confirms a character string corresponding to each secret icon recognized in the secret icon recognition unit, generates a combined character string in which the one or more confirmed character strings are arranged, and authenticates the user by confirming whether the generated combined character string is consistent with the user's password stored in the storage unit.

Abstract: Disclosed is a safe log-in system and method for allowing log-in of a user in association with a plurality of devices, and an apparatus for the same. The safe log-in method for allowing a safe log-in of a communication device which accesses a web site includes, by an authentication data providing device, determining whether the authentication data providing device and the communication device are located at the same place; by the authentication data providing device, acquiring authentication-related data of the communication device when the authentication data providing device and the communication device are located at the same place as a result of the determination; and by the authentication data providing device, providing the acquired authentication-related data to the communication device or the web site.

Abstract: Disclosed is a safe log-in system and method for allowing log-in of a user in association with a plurality of devices, and an apparatus for the same. The safe log-in method for allowing a safe log-in of a communication device which accesses a web site includes: by an authentication data providing device, receiving a request for authentication-related data, which is required for log-in to the web site, from the communication device; by the authentication data providing device, extracting authentication-related data required for log-in to the web site; by the authentication data providing device, transmitting the extracted authentication-related data to the communication device; and by the communication device, attempting log-in authentication to the web site by using the authentication-related data.

Abstract: The present invention relates to a passcode operating system, to a passcode apparatus, and to a super-passcode generating method, which are capable of protecting user authentication information from external hacking. The passcode apparatus of the present invention comprises: one or more processors; a memory; and one or more programs stored in the memory and configured to be executed by the one or more processors. The program includes: a data safekeeping module for storing user-specific passcode data; an input window module for displaying an input window on which multiple icons are arranged; and a passcode-generating module for checking, when icons are selected through the input window module, the character string corresponding to each selected icon on a virtual keyboard contained in the passcode data, generating a seed passcode in which the checked character strings are combined, and generating a super-passcode for each website using the seed passcode and a site code.

Abstract: An apparatus for managing a passcode comprises: one or more processors; a memory; and one or more programs stored in the memory and configured to be executed by said one or more processors. The program comprises: a storage module for storing passcode management data; an input window module for displaying the input window on which multiple key buttons are arranged; a combination code generating module for checking the code corresponding to each inputted key button in the code table included in the passcode management data, when the key button is inputted via the input window, and generating a combination code by combining each checked code; and a passcode acquiring module for receiving the passcode with a set storage address from a passcode storage server based on the generated combination code.

Abstract: The present invention relates to a system and method for processing a lost password by selectively providing a reset process under the password in the long-term memory of the user. According to the present invention, the system includes a user terminal including: a long-term memory condition registration unit receiving the registration of long-term memory conditions; a long-term condition determination unit determining the long-term memory conditions are satisfied; a user identification unit, after the occurrence of a lost password, authenticating the user through a user identification verification scheme or through a enhanced user identification verification scheme whether or not the password resides in the long-term memory of the user, and a lost state resetting unit cancelling the lost password occurrence state.

Abstract: Disclosed is a password authentication system and a password authentication method using continuous password authentication. In the password authentication system, a password is set using an original password and a shift value, and the password authentication system includes a password authentication unit configured to receive a password subjected to the shift value, apply the shift value inversely to the password to obtain the original password and perform authentication processing, a defense mode changing unit configured to change to a defense mode requiring continuous authentication of the password at least twice, and a defense mode control unit configured to require the user to continuously input a first password and a second password, and to determine the authentication of the password as a success and release the defense mode.

Abstract: Disclosed is an icon password setting apparatus and an icon password setting method, which provide a keyword of an icon for an icon password to be set. The icon password setting apparatus according to the present invention enables password setting using an icon image and an associated keyword, the apparatus comprising: a password management unit for generating or inquiring an icon password; a keyword phrase management unit for generating or inquiring a keyword phrase of the icon password; a password list generating unit for generating a list having each icon password and corresponding keyword phrases; and a user password setting unit for receiving a request for setting the password for the icon password in the list and setting a user password. According to the present invention, a user may easily remember an icon password using the keyword phrase provided when setting the icon password.

Abstract: A password input device comprises a storage unit for storing character strings according to each icon; an input window generation unit for generating and displaying an input window on which a plurality of icons are arranged; a secret icon recognition unit which confirms a shift coordinate value and recognizes icons, which are arranged on coordinates inversely moved up to the shift coordinate value from a coordinate value at which a selected icon is arranged, as secret icons selected by the user if the user selects the icon; and an authentication processing unit which confirms a character string corresponding to each secret icon recognized in the secret icon recognition unit, generates a combined character string in which the one or more confirmed character strings are arranged, and authenticates the user by confirming whether the generated combined character string is consistent with the user's password stored in the storage unit.