کنفرانس مهندسی برق ایران

صفحه اصلی / سی و دومین کنفرانس بین المللی مهندسی برق

True Random Number Generator Relying on Multiple Entropy Source and Triple Oscillator for Cryptography Purposes

نویسندگان :

Somayeh Gholam Mehraban¹ Mohsen Jalali² Mostafa Azadbakht³

1- دانشگاه تهران، شرکت ارتباطات سیار ایران (همراه اول) 2- دانشگاه شاهد تهران 3- شرکت ارتباطات سیار ایران (همراه اول)

کلمات کلیدی :

random number generator،encryption،cryptography،random number generator،encryption،random bit generator،cryptography،truly random،security،hardware security

چکیده :

The security of any cryptographic system is closely linked to the quality of the random number (RN) generator used; thus, it can be regarded as a basic component of cryptography. This paper unveils an extended ring oscillator-based true random number generator (TRNG), named triple-oscillator TRNG (TO-TRNG) which is particularly proper for smart IC cards and on-chip silicon applications. The accumulation of jitter over time, a major aspect of the ring oscillators is the source of entropy. The TO-TRNG benefits from multiplexing three oscillators, as the high-frequency oscillator, to have the highly deviated high-frequency signal. The output RN sequence is not accessible or reachable even by configuring identical circuitry. The proposed TRNG was implemented in a 0.18 µm TSMC CMOS process and taped out in July. A random bit is available for every 3 µs at the output. Shannon’s theory is employed to evaluate and ascertain the entropy of the post-simulated random numbers. To demonstrate the higher entropy of the TO-TRNG's output RN sequence and compare it with conventional methods, simulations were conducted for all in the same technology.