Telecommunication IC Security Against Cloning
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Solution Overview
Problem
The high level of integration in telecommunication ICs makes them vulnerable to piracy, counterfeiting, and unauthorized use due to outsourcing and reverse-engineering capabilities, which existing locking techniques such as biasing, MixLock, and calibration locking are insufficient to prevent.
Innovation Solution
A method involving the use of two cryptographic keys, where one key is used for encryption and the other for decryption, ensuring that the initial data is only recovered when a predetermined relationship between the keys holds, thereby preventing unauthorized use and cloning of the IC.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing locking techniques (biasing locking, MixLock, calibration locking) are used to protect IC designs, then some level of security is provided, but these techniques are insufficient to prevent piracy, counterfeiting, and unauthorized use due to reverse-engineering capabilities
Solution Approach 1:
The cryptographic key is divided into multiple segments (first key portion, second key portion) that are stored in different locations or accessed through different paths within the IC. This segmentation prevents attackers from obtaining the complete key through single-point reverse-engineering, as each segment alone is insufficient to compromise security.
Solution Approach 2:
The patent implements nested security layers where cryptographic operations are embedded within the IC architecture itself. The key management system is nested within the transmitter circuitry, with key segments integrated into different functional blocks. This nested structure protects keys from external extraction attempts while enabling internal cryptographic operations.
2Reliability
If cryptographic key protection mechanisms are implemented in ICs, then security against cloning and counterfeiting is improved, but the device complexity increases due to additional key management circuits
Solution Approach 1:
The cryptographic key management system is designed to serve multiple security functions simultaneously: authentication of the IC, protection against cloning, prevention of counterfeiting, and control of unauthorized use. By consolidating these functions into a unified key management architecture, the patent avoids the complexity of implementing separate mechanisms for each security concern.
Solution Approach 2:
The patent merges the cryptographic key storage and processing functions directly into the existing transmitter IC architecture rather than adding separate security modules. The key segments are integrated into functional blocks that already exist in the transmitter design, combining security functionality with operational functionality to minimize additional complexity.
Data Source
AI summary
A method is proposed for generating communication frames to be transmitted by a telecommunication transmitter. Such method comprises:obtaining (S200) a first cryptographic key and a second cryptographic key;encrypting (S210), using the first cryptographic key, an initial sequence of data to be transmitted through the communication frames, the encrypting delivering a first sequence of data;decrypting (S220), using the second cryptographic key, the first sequence of data, the decrypting delivering a second sequence of data; andgenerating (S230) the communication frames based on the second sequence of data,the encrypting and the decrypting being configured such that the second sequence of data comprises the initial sequence of data when a predetermined relationship holds between the first cryptographic key and the second cryptographic key, thus allowing protection of the telecommunication transmitter against piracy, counterfeiting and unauthorized use.