System and user pattern authentication method for preventing smudge and shoulder surfing attack of mobile device

A pattern authentication method for preventing a smudge and a shoulder surfing attack on wired and wireless networks, the pattern authentication method comprising:

• a pattern registration step;
• and
• a pattern authentication step,
• wherein the pattern registration step includes:
• a step of receiving a pattern from a user by an input unit of a pattern authentication device;
• a step of matching and storing a code value corresponding to the pattern input from the user by a matching unit;
• and
• a step of generating a user KDI (Key Derivation ID) by matching the code value to a quantum random number generated by a quantum random number generator by a KDI generator,
• wherein the pattern authentication step includes:
• a step of determining whether a user touches a specific region of the input unit of the pattern authentication device for a predetermined time;
• a step in a normal mode is changed into a substitution conversion mode and the code value is changed in accordance with the number of touches by the user and a touch tempo when it is determined that the user has touched the specific region for a predetermined time;
• a step of receiving a pattern from the user by the input unit of the pattern authentication device;
• a step of matching and storing a code value corresponding to the pattern input by the user by the matching unit;
• and
• a step of generating a user KDI by matching the code value and a quantum random number table by the KDI generator.