Cryptographically Secure PseudoRandom Bit Generator for Wearable Technology

This paper presents a prototype wearable Cryptographically Secure PseudoRandom Bit Generator CSPRBG (wearable CSPRBG). A vest prototype has been fabricated to which an evaluation board with a ZYBO (ZYnq BOard) Zynq Z-7010 has been mounted using tailoring technology. In this system, a seed generator and block cryptographic algorithms responsible for the generation of pseudo-random values were implemented. A microphone and an accelerometer recorded sound and acceleration during the use of the prototype vest, and these recordings were passed to the seed generator and used as entropy sources. Hardware implementations were made for several selected Block Cryptographic algorithms such as Advanced Encryption Standard (AES), Twofish and 3DES. The random binary values generated by the wearable CSPRBG were analyzed by National Institute of Standards and Technology (NIST) statistical tests as well as ENT tests to evaluate their randomness, depending on the configuration of the entropy sources used. The idea of possible development of the wearable CSPRBG as a System on Chip (SoC) solution is also presented.

Automated summary

This paper presents a prototype wearable Cryptographically Secure PseudoRandom Bit Generator (CSPRBG). The prototype vest includes a ZYBO Zynq Z-7010 evaluation board and implements a seed generator and block cryptographic algorithms for the generation of pseudo-random values. Sound and acceleration recordings from a microphone and accelerometer were used as entropy sources. Hardware implementations of selected block cryptographic algorithms, such as AES, Twofish, and 3DES, were made. The randomness of the binary values generated by the wearable CSPRBG was evaluated using statistical tests and ENT tests conducted by the National Institute of Standards and Technology (NIST), depending on the configuration of the entropy sources. The possibility of developing the wearable CSPRBG as a System on Chip (SoC) solution is also presented.