Correlation Power Analysis Attacks on the Software based Salsa20/12 Stream Cipher
Young‐Goo Park, KiSeok Bae, SangJae Moon, Hoon Jae Lee, Jaecheol Ha, MahnKi Ahn · Information Security and Cryptology · 2011
The Salsa20/12 stream cipher selected for the final eSTREAM portfolio has a better performance than software implementation of AES using an 8-bit microprocessor with restricted memory space, In the theoretical approach, the evaluation of exploitable timing vulnerability was 'none' and the complexity of side-channel analysis was 'low', but there is no literature of the practical result of power analysis attack. Thus we propose the correlation power analysis attack method and prove the feasibility of our proposed method by practical experiments, We used an 8-bit RISC AVR microprocessor (ATmegal128L chip) to implement Salsa20/12 stream cipher without any countermeasures, and performed the experiments of power analysis based on Hamming weight model.