Michal Stanek @ 36c3

@3lbios

Programming | Low-level | Comp Arch | Security | Tea

Poland
Vrijeme pridruživanja: srpanj 2011.

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  1. 30. sij

    Example Go to C communication (cgo FFI) where main app is in C and Go is built as a static library.

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    28. sij

    Apparently this is how bash `if [ cond ]` syntax works and I'm absolutely fuming afagdgshdhsjhshsjhdhs

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    27. sij

    New cache attack against Intel CPUs:

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  4. 20. sij

    How TPM attestation is used at Google

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    TIL a Poly1305 tag with a zero key is always zero. So if you can fixate the key, you can make the tag verify for any message, like with X25519 low order points. It does make sense, at that point the tag is m * 0 + 0 mod 2¹³⁰ - 5

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    19. sij

    Fun fact: golang treats float literals as a 545-bit floats (512 bit for mantissa[1], 32 exp, 1 sign[2]) when calculating constant expressions during compilation. [1] [2] Also "a mantissa of at least 256[..]"

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  7. 18. sij
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    18. sij

    good news: the upstream fixed the crash very promptly bad news: turns out the crash was hiding a bug in the temperature calculation code, so I got to witness a soldering iron tip glowing bright cherry red

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  9. 18. sij

    TLS 1.3 - Replay Attacks on Zero Round-Trip time

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  10. 18. sij
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  11. 18. sij
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    15. sij

    Just published a blog explaining the root cause of the recent crypto vulnerability (CVE-2020-0601 / ?) using some "Load Bearing Analogies" to make it more accessible. CC:

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    Odgovor korisnicima
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  14. 13. sij
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  15. 12. sij
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  16. 8. sij

    Tink is a multi-language, cross-platform, open source library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse.

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  17. 7. sij
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  18. 7. sij
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    7. sij

    New blog post. ARM hardware bug. In the specification.

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    2. sij

    We studied the potential side-channel threat of integrating FPGAs with the CPU memory subsystem in the ongoing collaboration with to make these platforms more secure. "JackHammer: Efficient Rowhammer on Heterogeneous FPGA-CPU Platforms"

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