sw/libhal - Cryptech libhal: crypto software, HSM management, RPC

Age	Commit message (Collapse)	Author
2017-10-23	Cleanup signed/unsigned mismatches, mostly in loop counters	Paul Selkirk

2017-04-26	Lower PBKDF2 password iterations and add delay on bad PIN.	Rob Austein
	Consistent user complaints about HSM login taking too long. Underlying issue has both superficial and fundamental causes. Superficial: Our PBKDF2 implementation is slow. We could almost certainly make it faster by taking advantage of partial pre-calculation (see notes in code) and by reenabling use of FPGA hash cores when when checking passwords (which mgiht require linking the bootloader against a separate libhal build to avoid chicken-and-egg problem of needing FPGA to log into console to configure FPGA). Fundamental: The PBKDF2 iteration counts we used to use (10,000 minimum, 20,000 default) are in line with current NIST recommendations. The new, faster values (1,000 and 2,000, respectively) are not, or, rather, they're in line with what NIST recommended a decade ago. Well, OK, maybe the Coretex M4 is so slow that it's living in the past, but still. The fundamental issue is that anybody who can capture the encoded PIN can mount an offline dictionary attack on it, so we'd like to make that expensive. But the users are unhappy with the current behavior, so this change falls back to the ancient technique of adding a delay (currently five seconds, configurable at compile time) after a bad PIN, which makes it painful to use the login function as an oracle but does nothing about the offline dictionary attack problem. Feh. Note that users can still choose a higher iteration count, by setting the iteration count via the console. It's just not the default out of the box anymore.
2016-07-05	Attempt to add resource management, for multiple cores of the same type.	Paul Selkirk
	Find a suitable core, and mark it busy. Don't forget to release it as soon as you're done. This has a knock-on effect of un-const'ing core arguments and struct fields in a lot of places, and it moves some core checks around.
2016-06-26	Merge branch 'master' of https://git.cryptech.is/sw/libhal.git.	Rob Austein

2016-06-26	Update libhal makefiles to use new LIBxxx_SRC / LIBxxx_BLD scheme so libhal ↵	Rob Austein
	can find tfm.h again.
2016-06-25	Dial back the last-gasp iterations to something sane.	Paul Selkirk
	I can't see protecting the well-known default password against a brute-force attack, and 100k iterations takes almost a minute, which makes a terrible first impression.
2016-06-25	Rename GNUmakefile to Makefile for consistency.	Paul Selkirk

2016-06-24	Support VPATH builds.	Rob Austein

2016-06-01	Make the makefile hopefully a little more readable/maintainable.	Paul Selkirk

2016-05-26	correct BPKDF2 -> PBKDF2 ;)	Fredrik Thulin

2016-05-25	Doh, helps if one actually uses the argument one just parsed.	Rob Austein

2016-05-25	PBKDF2 works better if we generate the right number of output bytes.	Rob Austein

2016-05-25	Start cleaning up PIN code.	Rob Austein

2016-05-14	Trailing whitespace cleanup.	Rob Austein

2015-12-13	Merge Paul's copyright updates.	Rob Austein

2015-12-13	whack copyrights	Paul Selkirk

2015-12-12	Silence platform-dependent compiler whining: in general, when printf()	Rob Austein
	whines about some platform-dependent integer size issue, it's best to use both an explicitly sized format (eg, "%lu") and an explicit cast (eg, "(unsigned long)") when silencing the warning, otherwise it'll just pop up again in different form on the next platform tested.
2015-11-14	Catch up with other branch merges.	Paul Selkirk
	- TRNG cores are contiguous (but they still have their own mux, so occupy a block of 16 cores). - Use Rob's updated libhal in my new apps.
2015-11-12	fix printf warnings, fix time_check calculation	Paul Selkirk

2015-10-31	add core probe utility	Paul Selkirk

2015-07-17	Debian Jessie hangs with bs=128, Kosagi forum tells us that the magic	Rob Austein
	solution is to change to bs=32.
2015-07-05	Add load_novena_fpga script.	Rob Austein

2015-07-05	Use C99 variadic macro as safety wrapper around variadic function.	Rob Austein
	Are we having fun yet?
2015-07-05	NULL-terminate string list, doh.	Rob Austein

2015-07-05	Get rid of autoconf, as we don't really need it. Add eim_peek_poke	Rob Austein
	utility program, based on Paul's example in the core/platform/novena repository.