[Cfrg] bMAC - Permutation as MAC key
Pascal Urien <pascal.urien@gmail.com> Tue, 31 December 2019 08:56 UTC
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From: Pascal Urien <pascal.urien@gmail.com>
Date: Tue, 31 Dec 2019 09:56:13 +0100
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Subject: [Cfrg] bMAC - Permutation as MAC key
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Hi All The bijective MAC Time Stamped (bMAC_TS algorithm see https://tools.ietf.org/html/draft-urien-core-bmac-05) aims at detecting malicious (corrupted) softwarein embedded systems. It works with two pillars, memory space is finite, and computing time is stable. Memory space is hashed according to a pseudo random order. The computing time is measured in order to defeat code decompression procedures. I have written a test software for arduino nano (33KB space memory for FLASH + SRAM+EEPROM) Computing time is about 27s (# 1m/byte), roughly speaking the computing time follows a normal distribution, the entropy is about 10bits (3 standard deviation) The code is here: https://github.com/purien/bMAC Comments welcome ..
- [Cfrg] bMAC - Permutation as MAC key Pascal Urien