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A High Throughput and Secure Authentication-Encryption AES-CCM Algorithm on Asynchronous Multicore Processor
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DOI：10.1109/TIFS.2018.2869344.png)
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We propose an authentication-based matrix-transformation cum parallel-encryption implemented on an asynchronous multicore processor (AMP-MP) to achieve a high throughput and yet secure advanced encryption standard based on counter with chaining mode (AES-CCM). There are four main features in our proposed AMP-MP. First, we employ the matrix multiplication in GF(28) computation to transform the 16 plaintexts into one plaintext, hence improving the authentication speed by 32x collectively at the transmitter and receiver. Second, we reschedule the operations of three AES encryptions in three different cores such that their physical leakages are compensated and equalized, thus reducing the correlation of physical leakage with the processed data by >3x. Third, the intermediate values of AES-CCM are propagated asynchronously between different cores to randomize the physical leakages with the processed data, and therefore further enhance the security of AES-CCM against the SCA by another 3x. Fourth, we propose a key adjusting technique based on S-Box byte-key transformation to protect the key against pattern-based attack. Our proposed AMP-MP is realized on an 8-bit asynchronous 9-core processor fabricated based on the 65 nm CMOS process. The experimental results show that the throughput of the authentication is 13.54 Gbps while the throughput for both authentication and encryption collectively is 832 Gbps, which are 17x and 70x faster than the reported counterparty, respectively. Based on power dissipation and EM SCA on our proposed AMP-MP, the secret key is unrevealed at 5 x 105 traces, which is similar to 17x more secured than the standard ASIC AES-CCM implementation.
Keyword:
Authentication
encryption
AES-CCM
multicore
asynchronous circuit
key adjusting technique
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