SIM Authentication Using Lock Screen PIN Auto-Generation

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Solution Overview

Problem

Existing electronic devices face challenges in efficiently and securely managing subscriber identity module (SIM) authentication processes, particularly in handling PIN configurations and network connections, which can be cumbersome and vulnerable to unauthorized access.

Innovation Solution

The electronic device employs a processor-controlled method for SIM authentication that includes displaying a lock screen, acquiring a PIN based on user authentication, identifying the PIN, and establishing a network connection using identification information and random values, with features like auto-generated PINs and encrypted random values for enhanced security.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual PIN configuration is used for SIM authentication, then user control and security are improved, but operation complexity and time consumption increase

Engineering Contradiction:

ImproveSIM authentication securityVSAvoidPIN configuration complexity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The system performs self-service by automatically generating the PIN based on device identification information and random values, eliminating the need for manual user input while maintaining security through cryptographic operations

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The PIN is generated in advance during device initialization or SIM insertion events, preparing the authentication credentials before they are needed, thus streamlining the authentication process without compromising security

Inventive Principle:

Principle #10Preliminary action

2Ease of operation

If auto-generated PIN is used for SIM authentication, then operation simplicity is improved, but security control may be reduced

Engineering Contradiction:

ImproveSIM authentication simplicityVSAvoidPIN security control

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The system changes the parameters of PIN generation by using device-specific identification information combined with random values through cryptographic functions, ensuring that each generated PIN is unique and secure while maintaining automatic generation

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

A secure cryptographic function acts as an intermediary between the random value generator and the PIN storage, transforming simple random values into secure authentication credentials through deterministic but reversible cryptographic operations

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If encrypted random values are stored, then security is improved, but storage and processing complexity increase

Engineering Contradiction:

Improveauthentication securityVSAvoidencryption management complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system merges the random value generation, encryption, and PIN creation processes into a single integrated workflow, reducing the need for separate management of encrypted values while maintaining security through combined cryptographic operations

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20260073034A1Electronic device for performing subscriber identity module authentication, and operating method and storage medium thereof

Publication Date: 2026.03.12 SAMSUNG ELECTRONICS CO LTD

AI summary

An electronic device includes: a communication circuit; a display; at least one processor including processing circuitry; and memory storing instructions that, when executed by the at least one processor individually or collectively, cause the electronic device to: display a lock screen for user authentication through the display based on an event for subscriber identity module (SIM) authentication being generated, acquire a personal identification number (PIN) for an SIM unlock based on acquisition of user authentication information for releasing the lock screen, identify whether the acquired PIN corresponds to a stored PIN, and perform the SIM unlock, based on identifying that the acquired PIN corresponds to the stored PIN.