November 2019 Archives by thread

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Starting: Wed Nov 6 21:34:12 UTC 2019
Ending: Tue Nov 26 12:27:09 UTC 2019
Messages: 10

• [Cryptech-Commits] [sw/libhal] branch import_export_raw created (now 323bc8a)   git at cryptech.is
  • [Cryptech-Commits] [sw/libhal] 01/01: Export/import "raw" keys for external storage.   git at cryptech.is
• [Cryptech-Commits] [user/shatov/modexpng] branch master updated: Beautified the README.md, should look somewhat less nasty now.   git at cryptech.is
• [Cryptech-Commits] [user/shatov/modexpng] branch master updated: The uOP engine didn't compile at 180 MHz. The pipeline had two stages: FETCH and DECODE. Apparently one clock cycle is not enough to entirely decode an instruction, so decoding now takes two clock cycles (DECODE_1 and DECODE_2). This seems to solve the problem. If we run into more timing violations here, we can add an extra DECODE_3 cycle and register the currently combinatorial uop_opcode_* flags at DECODE_2. This fix increases the core's latency by 59/32 clock cycles (CRT/non-CRT mode) p [...]   git at cryptech.is
• [Cryptech-Commits] [user/shatov/modexpng] branch master updated: Refactored reductor module.   git at cryptech.is
• [Cryptech-Commits] [user/shatov/modexpng] branch master updated: Removed the latch accidentally created while pipelining the uOP engine module. The FSM previously had four states encoded using two bits, so the next state logic didn't have a default case, since all the possible states were used. Addition of the fifth state required one more state bit, so the FSM now has five states out eight possible and a default case is thus necessary.   git at cryptech.is
• [Cryptech-Commits] [user/shatov/modexpng] branch master updated: Small change to the reductor module to try to get past 180 MHz. Previously BRAM outputs were going directry into a LUT-based ternary adder which was causing timing problems. Added a layer of flip-flops, so instead of BRAM -> LUT -> FF we have BRAM -> FF -> LUT -> FF. This increases core latency by (number_of_supporting_modular_multiplications + number_of_exponent_bits) ticks.   git at cryptech.is
• [Cryptech-Commits] [user/shatov/modexpng] branch master updated: Forgot to push minor cosmetic fix.   git at cryptech.is
• [Cryptech-Commits] [user/shatov/modexpng] branch master updated: Cosmetic fix.   git at cryptech.is
• [Cryptech-Commits] [user/shatov/modexpng] branch master updated: One more cosmetic fix.   git at cryptech.is

Last message date: Tue Nov 26 12:27:09 UTC 2019
Archived on: Tue Nov 26 12:27:11 UTC 2019

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