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99 Commits

Author SHA1 Message Date
surtur 25cbddf41f
generator: use a proper uin64_t literal 2021-12-11 01:13:01 +01:00
surtur b9676226c5
chore(generator): erase -> clear 2021-12-11 01:10:14 +01:00
surtur a7e8caa26e
generator: memcpy -> memmove 2021-12-11 01:04:57 +01:00
surtur 595245fbce
fix(generator): incorrect copying, no protections 
* use try-catch whenever possible
* perform memcpy operations in the right direction
* make greater use of local constants
* use more of the braced initializations
* there were memcpy operations of incorrect sizes in place, particularly
  in regard to generator key (G.k) and counter (G.ctr), which resulted
  in key bytes being set to garbage
 2021-12-10 20:02:30 +01:00
surtur 801d605e2a
chore(clang-tidy): unify flags 
also add a status message to CMake's output
 2021-12-10 18:57:25 +01:00
surtur 053d2187a2
chore(accumulator): make use of init_pool_num 2021-12-09 14:11:39 +01:00
surtur 8b4cd4b6e8
fortuna(random_data): time-tracking precision++ 
using floats does wonders
 2021-12-08 23:17:37 +01:00
surtur 82288fe20d
chore(event_adder_impl): reuse constant p_size 
size of pools array will stay the same anyway
 2021-12-08 04:19:22 +01:00
surtur c401a47ca7
event_adder_impl: loop with a pre-computed value 2021-12-08 04:07:14 +01:00
surtur 872e6f7f9f
add event_adder_impl 2021-12-08 03:58:18 +01:00
surtur 33f6620662
chore(pool): stop spamming at initialization 2021-12-08 03:40:08 +01:00
surtur 0e3caebb6d
chore(fortuna): formatting 
[skip ci]
 2021-12-08 03:31:47 +01:00
surtur f02952d72a
fortuna(random_data): add basic time tracking 2021-12-07 15:55:29 +01:00
surtur 9f799c83a9
fortuna: add incr_reseed_ctr 2021-12-07 15:46:01 +01:00
surtur b96ce5d644
fortuna: wrap pool initialization in a try-catch 2021-12-07 02:48:37 +01:00
surtur bc5bb6e700
add EventAdder interface 
will be used as a base implementations of sources of random events
 2021-12-06 01:02:43 +01:00
surtur 5557f0d9e6
refactor(generator): clean up includes a little 2021-12-06 00:08:32 +01:00
surtur b14600c352
makefile: refactor "clean" target; add "distclean" 
* clean now just removes the object files, dwo debugging objects, .cmake
  and intermediary .bin files but keeps CMakeCache and similar
* a new target - distclean - is introduced to do what was previously
  done by "clean", essentially: completely remove the build folders
 2021-12-05 15:27:47 +01:00
surtur 7f05984946
integrate clang-tidy into cmake 
* consolidate everything with the makefile, the "tidy" target now just
  sets the env var that is checked for in CMakeLists
* rm clang-tidy from pre-commit as it's run as part of the "test"
  makefile target later in the file anyway
 2021-12-05 05:13:07 +01:00
surtur 53645ea160
generator: add more try-catch blocks internally 
one around initialization and another when calling reseed()
 2021-12-05 03:13:47 +01:00
surtur cf0e548315
pre-commit: exclude the lib folder 
[skip ci]
 2021-12-05 03:10:50 +01:00
surtur 6f6b3cb8e2
generator: wrap the initialization in a try-catch 2021-12-05 02:00:25 +01:00
surtur a1cbbb209e
handle PRNG state in R_state + accumulator basis 
* handle the PRNG state with R_state nested class
* add a private property R holding PRNG state to Fortuna
* add R_state properties as defined in Cryptography Engineering:
  * a generator instance
  * a reseed counter
  * 32 pools that the collected entropy is to be distributed over

* add initial definition of the Pool object and its initialization

* attempt to initialize PRNG in Fortuna constructor. wrap the
  initialization call in a try-catch block like a cultured person
* erase the string used to print data from random_data() after it's been
  used
 2021-12-04 00:40:39 +01:00
surtur 72bb378709
pre-commit: add 'make san' step 
making sure to build with sanitize flags before committing
 2021-12-03 20:34:45 +01:00
surtur 77f1fe4c56
cmake,makefile: sanitize! 
as per #3
 2021-12-02 18:34:07 +01:00
surtur e72aa06813
executable hardening v2 
* enable PIE
* pass flags to linker based on the build type
* enable LTO
 2021-12-02 18:25:15 +01:00
surtur bb12cf7b56
cmake: always set -Wall 2021-12-02 14:50:39 +01:00
surtur b15e1e9a55
harden executable 
* fortify source
* link with "-pie"
* split stack
* set stack-protector to all
 2021-11-30 15:52:17 +01:00
surtur 0c2a1c6744
finalise generator 
commit a64b52e5a4
Author: surtur <a_mirre@utb.cz>
Date:   Sun Nov 21 23:39:30 2021 +0100

    finalise generator

    this commit adds a (nearly) complete implementation of the generator.

    * wrap calls to generator in a fortuna class method random_data
      * calls generator's method generate_random_data, that internally calls
        generate_blocks
    * use a proper 256bit key in G_state
    * add reseed method implementation
    * call a reseed in initialize_generator
    * do_sha returns proper digest now
    * add proper do_crypto implementation
      * call generate_blocks internally
      * handle re-keying
    * optimise header includes

    TODO: there are still many commented (enabled on demand) debugging statements
    -> TO BE REMOVED
 2021-11-30 14:09:39 +01:00
surtur d942e06263
cmake: compile PIC with "-fPIC" 2021-11-20 22:31:55 +01:00
surtur e531aa6289
cmake: print version 2021-11-20 22:31:55 +01:00
surtur fad32c0a41
makefile: cppcheck suppress "missingIncludeSystem" 2021-11-20 22:31:55 +01:00
surtur e00bc4d277
makefile(valgrind): add --leak-check=full 2021-11-20 22:31:55 +01:00
surtur bcd33c2f33
chore: direct braced string initialization 2021-11-20 22:31:55 +01:00
surtur 4cea227cdd
generator: prefer preincrement 2021-11-20 22:31:54 +01:00
surtur 444660bf89
feat(generator): add constructor/destructor 
* initialize_generator() is now a private method
* call initialize_generator() inside the constructor of the Generator
* move full struct declaration to generator.h
* have a private field named G of type G_state
* remove explicit instantiation of Generator from fortuna constructor -
  Generator is a private field of fortuna
* remove direct initialize_generator() call from fortuna constructor
* remove get_state() calls as G_state G is now a private field
* refactor get_state() to simply return the *private field G_state G*
* refactor do_crypto() - I know, this should have been split to a
  separate commit - remove function parameters and useless assignments
  inside its body to reflect that once it accesses k and ctr (of the
  G_state G), it won't be necessary for them to be passed as parameters,
  since *G_state G is now a private field*...
 2021-11-20 22:31:54 +01:00
surtur 2fa7e135cb
chore(fmt): follow-up of bd42129 
this time replace printf's
 2021-11-19 22:32:03 +01:00
surtur 225952a7e2
fix(fortuna): add end-of-namespace comment 2021-11-19 20:59:12 +01:00
surtur bd421295c4
feat: use fmt instead of iostreams 
switch to fmt - "A modern formatting library" - for fun and profit,
currently in header-only configuration.

ref: https://github.com/fmtlib/fmt

closes #5
closes #4
 2021-11-18 22:05:05 +01:00
surtur 9fd35eee93
cmake: require the declared cxx standard 2021-11-18 19:49:15 +01:00
surtur 8d8129dc40
refactor(generator): use solely SHA3 
still in test mode (see the assert) at the moment
 2021-11-17 23:40:38 +01:00
surtur 85907e7178
generator: add a meaningful assert message 
should help with debugging...
 2021-11-16 00:17:16 +01:00
surtur c82d3912f5
generator: add CTR-mode Serpent to random_data() 
operate on a fixed string with randomly generated key and iv block on
each run.

this is neither finished nor correct implementation, it currently also
calls the Decryption routine to prove that it's working properly with
the input given ("Oh, I am fortune's fool!" seemed fitting for fortuna).
 2021-11-15 23:37:04 +01:00
surtur b934b11aa9
cmake(release): harden the build 2021-11-15 23:07:59 +01:00
surtur 0199fbd675
cmake: optimize for debugging with -Og 2021-11-15 23:04:37 +01:00
surtur 9a9b81769f
chore(generator): directly reference std methods 
instead of using "std::method" for cout and endl
 2021-11-15 23:02:49 +01:00
surtur 2f2f47da01
generator: silence pedantic warnings for __int128 
in fortuna, a use of 128bit integer is necessary, which also violates ISO C++:
"warning: ISO C++ does not support ‘__int128’ for ‘ctr’ [-Wpedantic]"

enclosing only the problematic blocks in ignore is chosen as a superior
course of action, compared to completely removing "-Wpedantic" from
CXX_FLAGS, as proposed in #2, as that would prevent any further
"pedantic" warnings from any further code to be shown.

this way, it is assured that the warning "ignore" is activated after
push the push, after which the environment is returned back to its
previous state with a pop, allowing any further warnings to appear.

closes #2
 2021-11-15 22:47:22 +01:00
surtur c0012e36f9
chore: remove unused #include <algorithm> 
* "include what you use"
 2021-11-15 22:41:22 +01:00
surtur 3f411f687e
chore: header-guard encompass files properly 2021-11-15 22:13:00 +01:00
surtur 20c22fef47
chore(main): don't directly work with Generator 2021-11-15 22:05:07 +01:00