sys/hashes/pbkdf2: Add PBKDF2-sha256 implementation. [TAKEOVER]

[fjmolinas]

Contribution description

This PR rebases and fixes murdock complaints for #12211, I also fixed some issues when running the test on hardware. I took over since I can't push to the archived repository.

This add an implementation of PBKDF2 using sha256 hmac. Only one derived key length is supported (32) though it should not be hard to extend it.

Testing procedure

The testing is done with both random (with fixed seed) vectors and vectors from rfc7914.

BOARD=native make -C tests/pbkdf2/ all test -j3 --no-print-directory

Building application "tests_pbkdf2" for "native" with MCU "native".

"make" -C /home/francisco/workspace/RIOT3/boards/native
"make" -C /home/francisco/workspace/RIOT3/boards/native/drivers
"make" -C /home/francisco/workspace/RIOT3/core
"make" -C /home/francisco/workspace/RIOT3/cpu/native
"make" -C /home/francisco/workspace/RIOT3/cpu/native/periph
"make" -C /home/francisco/workspace/RIOT3/drivers
"make" -C /home/francisco/workspace/RIOT3/drivers/periph_common
"make" -C /home/francisco/workspace/RIOT3/cpu/native/stdio_native
"make" -C /home/francisco/workspace/RIOT3/sys
"make" -C /home/francisco/workspace/RIOT3/sys/auto_init
"make" -C /home/francisco/workspace/RIOT3/sys/base64
"make" -C /home/francisco/workspace/RIOT3/sys/crypto
"make" -C /home/francisco/workspace/RIOT3/sys/hashes
"make" -C /home/francisco/workspace/RIOT3/sys/test_utils/interactive_sync
   text    data     bss     dec     hex filename
  35234     708   48228   84170   148ca /home/francisco/workspace/RIOT3/tests/pbkdf2/bin/native/tests_pbkdf2.elf
r
make[1]: warning: jobserver unavailable: using -j1.  Add '+' to parent make rule.
/home/francisco/workspace/RIOT3/tests/pbkdf2/bin/native/tests_pbkdf2.elf
RIOT native interrupts/signals initialized.
LED_RED_OFF
LED_GREEN_ON
RIOT native board initialized.
RIOT native hardware initialization complete.

Help: Press s to start test, r to print it is ready
READY
s
START
main(): This is RIOT! (Version: 2021.01-devel-84-gb2295-pbkdf2-sha256)
{ready}
passwd
{ready}
c2FsdA==
{ready}
1
VawEblbjCJ/sFpHCJUS2BflBhSFt3gRl5oudV8INrLw=
{ready}
Password
{ready}
TmFDbA==
{ready}
80000
TdzY9guYviGDDO5e8icB+WQaRBjQTAQUrv8Ih2s0q1Y=
{ready}

r
make[1]: warning: jobserver unavailable: using -j1.  Add '+' to parent make rule.
/home/francisco/workspace/RIOT3/tests/pbkdf2/bin/native/tests_pbkdf2.elf
RIOT native interrupts/signals initialized.
LED_RED_OFF
LED_GREEN_ON
RIOT native board initialized.
RIOT native hardware initialization complete.

Help: Press s to start test, r to print it is ready
READY
s
START
main(): This is RIOT! (Version: 2021.01-devel-84-g4875a-pbkdf2-sha256)
{ready}

{ready}
vdZA+wZnGtEcgDF/o7F5nQ==
{ready}
10
mkkhkWNNxh8SRegffJ3jT+/INJDwceUQ/JGGAXZJ1mg=
{ready}
:5e`t(H"
{ready}

{ready}
10
HJ8E5DsSemPdwcEcdiWsXNHUNK7FpfL6NPqE2Zl0Qho=
{ready}
4P"2]S4Wl
{ready}
YULqfRe+MREaKnPtVisPecN0We71C+pjNx7NeyfNgTBHIpOJVxqodmwwdRGyuUN6KN9uxM5KK73CQTMLAannHw==
{ready}
1
7/kTA8PIj0TXUHE4i5VCbre7T5b0sDI8JizsR8cH3Wg=
{ready}
)pYleR|CTnZqVb$5;'6):\BC39x]Y0e/D~\Tapi5#=94ys=^EvK97U8WuE4~P($*[
{ready}
d9L/Ac+ZmIwkyWGxzSJigBxFEENaEJiuQzRsEqzorjQEVMrFtow=
{ready}
20
LVbkmVr4rwFkBWxVg76nwLSh6dYmdOCuw2KTgYRkZfE=
{ready}
R|q!d`S9\*IKzs9O0vr<\Y.hSiR >!xs
{ready}
PUy/Trk+/86Iyy3U6Ag5
{ready}
12
Y2T4na5rpTpEsIViaVnINwG0R9CwhPl0ta6myAaBtIs=
{ready}
%sy(N&hh,MT9rH4Se3=~]IQ+5@W54&[5vq&6_4,xVLjl2)HH
{ready}
pWwJQfvyQFCnSNvPrGGeYw3eKaa6pLca3SRnrHeO7bM=
{ready}
15
txemIhZNx1TYOd+Z1UIpCrtPy469VTitUNNO+QX8YFU=
{ready}

BOARD=nrf52840-mdk make -C tests/pbkdf2/ flash test -j3 --no-print-directory

main(): This is RIOT! (Version: 2021.01-devel-84-g4875a-pbkdf2-sha256)
{ready}
passwd
{ready}
c2FsdA==
{ready}
1
VawEblbjCJ/sFpHCJUS2BflBhSFt3gRl5oudV8INrLw=
{read
r
make[1]: warning: jobserver unavailable: using -j1.  Add '+' to parent make rule.
socat - open:/dev/riot/tty-nrf52840-mdk,b115200,echo=0,raw
Help: Press s to start test, r to print it is ready
READY
s
START
main(): This is RIOT! (Version: 2021.01-devel-84-g4875a-pbkdf2-sha256)
{ready}

{ready}
vdZA+wZnGtEcgDF/o7F5nQ==
{ready}
10
mkkhkWNNxh8SRegffJ3jT+/INJDwceUQ/JGGAXZJ1mg=
{ready}
:5e`t(H"
{ready}

{ready}
10
HJ8E5DsSemPdwcEcdiWsXNHUNK7FpfL6NPqE2Zl0Qho=
{ready}
4P"2]S4Wl
{ready}
YULqfRe+MREaKnPtVisPecN0We71C+pjNx7NeyfNgTBHIpOJVxqodmwwdRGyuUN6KN9uxM5KK73CQTMLAannHw==
{ready}
1
7/kTA8PIj0TXUHE4i5VCbre7T5b0sDI8JizsR8cH3Wg=
{ready}
)pYleR|CTnZqVb$5;'6):\BC39x]Y0e/D~\Tapi5#=94ys=^EvK97U8WuE4~P($*[
{ready}
d9L/Ac+ZmIwkyWGxzSJigBxFEENaEJiuQzRsEqzorjQEVMrFtow=
{ready}
20
LVbkmVr4rwFkBWxVg76nwLSh6dYmdOCuw2KTgYRkZfE=
{ready}
R|q!d`S9\*IKzs9O0vr<\Y.hSiR >!xs
{ready}
PUy/Trk+/86Iyy3U6Ag5
{ready}
12
Y2T4na5rpTpEsIViaVnINwG0R9CwhPl0ta6myAaBtIs=
{ready}
%sy(N&hh,MT9rH4Se3=~]IQ+5@W54&[5vq&6_4,xVLjl2)HH
{ready}
pWwJQfvyQFCnSNvPrGGeYw3eKaa6pLca3SRnrHeO7bM=
{ready}
15
txemIhZNx1TYOd+Z1UIpCrtPy469VTitUNNO+QX8YFU=
{ready}

Issues/PRs references

Taken from #12191 .
Closes #12211

[benpicco]

looks good, you want to add those four atmega328p boards to Makefile.ci.

Also the automatic test failed on CI. Does it work locally?

[fjmolinas]

Also the automatic test failed on CI. Does it work locally?

It did... I'll take a look..

[fjmolinas]

It did... I'll take a look..

Ahh its a python version issue.

[fjmolinas]

This time the test passed, there where only some unrelated failures

--- run_test job results (2 failed, 230 passed, 232 total):
    failed:
    tests/mtd_flashpage/samr21-xpro:llvm
    tests/pkg_libhydrogen/samr21-xpro:llvm

There was some boards that needed to be added to the insufficient memory list, as well as a typo to be fixed. Is it OK to squash @benpicco ?

[benpicco]

Sure, please squash - but also go recommend some parameter lengths in the doc so it's clear how to use this properly

[benpicco]

Only run_test/tests/pkg_libhydrogen/samr21-xpro:llvm failed as expected.