Micha艂 Trojnara    

@[email protected]
30 Followers
40 Following
223 Posts
PhD in cryptography, author of stunnel and StreamHash5, maintainer of libp11 and osslsigncode.
PGP 馃憜: AC91 5EA3 0645 D9D3 D4DA E4FE B104 8932 DD3A AAA3
Micha艂 Trojnara    Mar 5
S茅bastien Dudek 馃摗Mar 4
From UV light to CPU register tracing: 8 years of tackling STM32 readout protection, quickly summarized.
The latest? STM32-TraceRip achieves 100% flash recovery on STM32G0: no glitching, no decapping, just reading processor state during normal execution.
Full state of the art on our community:
馃憞
https://community.penthertz.com/t/breaking-stm32-readout-protection-from-uv-light-to-cpu-state-tracing/27
Show threadMicha艂 Trojnara    Dec 26
@lcamtuf My first machine used two TMS4416-15NL (same size, different organization) for RAM. Good stuff.
Micha艂 Trojnara    Oct 26
Lady Laura Oct 25
Micha艂 Trojnara    Oct 12
Moon PhasesOct 1
Today's undefined moon is 0% of full brightness, and is currently NaN km from Earth and NaN km from the sun. It's been NaN days since the last new moon.
Show threadMicha艂 Trojnara    Sep 27, 2025
The lack of notification about last minute agenda changes was utterly annoying. Otherwise, a nice conference. #BSidesKrakow
Micha艂 Trojnara    Sep 27, 2025
I'm enjoying https://bsideskrakow.pl/ today. Good stuff so far.
Security BSides Krak贸w

Security BSides Krak贸w. BSides Krak贸w is an Internatinal Information Security conference organized by the local community that aims to promote hacker culture and share knowledge.

BSides Krak贸w
Micha艂 Trojnara    Sep 23, 2025
I upgraded a Rocky Linux machine today and noticed that linux-firmware-20250812-151.4.el9_6.noarch.rpm is 575 MB. That鈥檚 575 MB of compressed firmware. Is this insane, or am I simply too old to understand modern technology?
Micha艂 Trojnara    Sep 23, 2025
Show threadmeiSep 20, 2025
@wren6991 @lofty one trick i've seen for dealing with fpga toolchains that i really like is to LD_PRELOAD this bad boy. makes them much less flakey.
Show threadMicha艂 Trojnara    Sep 23, 2025
@mei @Lofty I'd assign the orig_free() parametr to a temporary variable and call the actual orig_free() after the critical section. Otherwise, it looks like an implementation I could have written. Great idea.
Show threadMicha艂 Trojnara    Sep 23, 2025
@mei @cvtsi2sd I don't think libc free() needs an extra protection against race conditions.