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Filters: Author is Xie, Nanjiang  [Clear All Filters]
2022-12-20
Xie, Nanjiang, Gong, Zheng, Tang, Yufeng, Wang, Lei, Wen, Yamin.  2022.  Protecting White-Box Block Ciphers with Galois/Counter Mode. 2022 IEEE Conference on Dependable and Secure Computing (DSC). :1–7.
All along, white-box cryptography researchers focus on the design and implementation of certain primitives but less to the practice of the cipher working modes. For example, the Galois/Counter Mode (GCM) requires block ciphers to perform only the encrypting operations, which inevitably facing code-lifting attacks under the white-box security model. In this paper, a code-lifting resisted GCM (which is named WBGCM) is proposed to mitigate this security drawbacks in the white-box context. The basic idea is to combining external encodings with exclusive-or operations in GCM, and therefore two different schemes are designed with external encodings (WBGCM-EE) and maskings (WBGCM-Maksing), respectively. Furthermore, WBGCM is instantiated with Chow et al.'s white-box AES, and the experiments show that the processing speeds of WBGCM-EE and WBGCM-Masking achieves about 5 MBytes/Second with a marginal storage overhead.