TY - CHAP U1 - Konferenzveröffentlichung A1 - Samotyja, Jacek A1 - Lemke-Rust, Kerstin T1 - Practical Results of ECC Side Channel Countermeasures on an ARM Cortex M3 Processor T2 - Bilgin, Nikova et al. (Eds.): Proceedings of the 2016 ACM Workshop on Theory of Implementation Security (TIS'16). Vienna, Austria, October 24-28, 2016 N2 - This paper presents implementation results of several side channel countermeasures for protecting the scalar multiplication of ECC (Elliptic Curve Cryptography) implemented on an ARM Cortex M3 processor that is used in security sensitive wireless sensor nodes. Our implementation was done for the ECC curves P-256, brainpool256r1, and Ed25519. Investigated countermeasures include Double-And-Add Always, Montgomery Ladder, Scalar Randomization, Randomized Scalar Splitting, Coordinate Randomization, and Randomized Sliding Window. Practical side channel tests for SEMA (Simple Electromagnetic Analysis) and MESD (Multiple Exponent, Single Data) are included. Though more advanced side channel attacks are not evaluated, yet, our results show that an appropriate level of resistance against the most relevant attacks can be reached. KW - Side Channel Countermeasures KW - ARM Cortex M3 Processor KW - ScalarMultiplication KW - Elliptic Curve Cryptography SN - 978-1-4503-4575-0 SB - 978-1-4503-4575-0 U6 - https://doi.org/10.1145/2996366.2996371 DO - https://doi.org/10.1145/2996366.2996371 SP - 27 EP - 35 PB - ACM Press ER -