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401 Commits

Author SHA1 Message Date
Gilles Peskine
93cdb77835 Minor clarifications 
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2024-01-02 13:15:04 +01:00
Gilles Peskine
8f1307adcd Asymmetric cryptography: rough draft 
Still many open questions

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-12-25 21:42:23 +01:00
Manuel Pégourié-Gonnard
69b290589b
Merge pull request #8057 from mpg/cipher-study 
[G2] Tentative definition of Cipher light
 2023-12-22 08:53:30 +00:00
Ryan Everett
3dd6cde0d8 Mention functional correctness explicitly 
Signed-off-by: Ryan Everett <ryan.everett@arm.com>
 2023-12-20 16:47:57 +00:00
Ryan Everett
f5e135670b Clarify key generation and memory-management correctness 
Signed-off-by: Ryan Everett <ryan.everett@arm.com>
 2023-12-20 15:24:47 +00:00
Ryan Everett
c1c6e0d906 Justify linearization points 
Signed-off-by: Ryan Everett <ryan.everett@arm.com>
 2023-12-15 12:33:26 +00:00
Ryan Everett
6ecb9ce5fc Link directly to the state transition diagram 
Signed-off-by: Ryan Everett <ryan.everett@arm.com>
 2023-12-14 15:19:31 +00:00
Ryan Everett
acfd774bca Add some clarifications in thread_safety.md 
Make it clearer how it is possible to reason here using linearization

Signed-off-by: Ryan Everett <ryan.everett@arm.com>
 2023-12-14 15:19:31 +00:00
Ryan Everett
3eb4274a57 Fix transitions in diagram 
Move the finish_key_creation transition
Neaten the diagram
Add transitions for the key loading functions in psa_get_and_lock_key_slot
Add psa_wipe_key_slot transition
Change file to be a png

Signed-off-by: Ryan Everett <ryan.everett@arm.com>
 2023-12-14 15:19:01 +00:00
Ryan Everett
b461b8731c Change how the state transition diagram is stored 
Store the source of the diagram as a url instead of an xml file.
Signed-off-by: Ryan Everett <ryan.everett@arm.com>
 2023-12-14 14:40:45 +00:00
Manuel Pégourié-Gonnard
4dde0b293c md-cipher-dispatch: editorial improvements 
Fix a typo, add a reference.

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
 2023-12-14 12:09:38 +01:00
Ryan Everett
177a45f556 Small clarifications in documentation 
Signed-off-by: Ryan Everett <ryan.everett@arm.com>
 2023-12-07 11:24:30 +00:00
Manuel Pégourié-Gonnard
b8c4254f44 Update cipher light -> block cipher definition 
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
 2023-12-07 12:12:39 +01:00
Ryan Everett
204c852442 Move psa-thread-safety.md 
Signed-off-by: Ryan Everett <ryan.everett@arm.com>
 2023-12-07 11:05:37 +00:00
Ryan Everett
1e9733c6a8 Add graph 
Signed-off-by: Ryan Everett <ryan.everett@arm.com>
 2023-12-07 11:05:37 +00:00
Ryan Everett
9f06681cb4 Update psa-thread-safety.md 
Signed-off-by: Ryan Everett <ryan.everett@arm.com>
 2023-12-07 11:05:37 +00:00
Manuel Pégourié-Gonnard
303121eb16 Fix a typo 
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
 2023-12-07 12:05:07 +01:00
Gilles Peskine
7ee4cc302a Create legacy-API bridge API design document 
Do the analysis for hashes.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-11-28 16:08:26 +01:00
Gilles Peskine
b86873e6eb Merge remote-tracking branch 'development' into development-restricted 2023-11-20 18:43:21 +01:00
Dave Rodgman
16799db69a update headers 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2023-11-02 19:47:20 +00:00
David Horstmann
f63a52ed63 Remove auto-generation of test wrappers 
Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-31 14:26:00 +00:00
David Horstmann
413dd07a49 Downgrade auto testing testing to a nice-to-have 
Automatic testing of our testing is not essential, as our testing
framework may be manually tested. Having automated tests to test our
tests may be left to future work.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-31 12:20:19 +00:00
David Horstmann
2531dab296 Add auto-generation of test wrappers to design 
Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-30 18:27:10 +00:00
David Horstmann
15b5beea0c Add note on platform-specific barriers 
Describe the approach of platform-specific code and draw a comparison
with the constant-time module.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-30 17:13:54 +00:00
David Horstmann
e045b55c65 Add sections on validation of validation 
These cover the fact that we need to test our test framework to make
sure it really detects incorrect accesses.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-30 17:00:16 +00:00
David Horstmann
e88a6f8368 Add portability consideration to careful-access 
It's important that we be able to test for target-specific bugs.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-30 15:26:21 +00:00
David Horstmann
d081e52685 Discuss plain-overwriting memory poisoning 
Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-30 15:22:07 +00:00
Manuel Pégourié-Gonnard
4823d2c94e Extend design discussion 
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
 2023-10-26 12:56:39 +02:00
Janos Follath
a365efc6f1 Threading design: fix internal links 
Signed-off-by: Janos Follath <janos.follath@arm.com>
 2023-10-26 10:22:55 +01:00
Manuel Pégourié-Gonnard
6b3643117b Document chosen goals and priorities for 3.x 
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
 2023-10-26 11:02:17 +02:00
Manuel Pégourié-Gonnard
3bcda449c0 Things forgotten in the previous commit 
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
 2023-10-26 10:03:49 +02:00
David Horstmann
599b087990 Rename and specify config options 
* Rename config options to have MBEDTLS_TEST_ prefix
* Clarify that these config options should not exist in mbedtls_config.h

Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-25 18:09:17 +01:00
David Horstmann
78bd77f574 Careful-access prototyping to design exploration 
Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-25 18:04:39 +01:00
David Horstmann
c59913822e Remove references to new-test approach in design 
This is already covered in the design exploration and since the other
approach was chose, we do not need to discuss it in the detailed design
section.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-25 15:33:50 +01:00
David Horstmann
2b86df87da De-duplicate section titles 
Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-25 15:26:27 +01:00
David Horstmann
8e58ccb4f6 Add blank lines before lists 
This widens compatibility with different dialects of Markdown.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-25 15:13:29 +01:00
David Horstmann
2711d23976 Fix broken links 
Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-25 15:07:58 +01:00
David Horstmann
f95767ad56 Clarify use of new tests for careful-access 
New tests are needed (rather than existing ones) because the complexity
of setting up careful-access tests would make it difficult to build atop
existing tests.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-24 16:16:36 +01:00
David Horstmann
c7ccbf5157 Add detailed design section for careful access 
This consists in outlining the prototyping and evaluation of different
possible testing approaches.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-24 15:43:12 +01:00
David Horstmann
56aa1b3fbb Add exploration section on FVP testing 
Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-23 21:20:01 +01:00
David Horstmann
09c84ef0cd Add lengths to convenience interface sketch 
Add lengths to structs in the convenience functions to allocate and copy
input and output buffers. It seems better to ensure we always store a
buffer with its length.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-23 20:43:03 +01:00
David Horstmann
730dea31cb Rewrite incorrect description of psa_exercise_key 
And clarify our potential use of it as a starting point for writing
memory poisoning tests from scratch.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-23 20:35:35 +01:00
David Horstmann
6c51207602 Add notes about configuration of poisoning tests 
Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-23 20:25:14 +01:00
David Horstmann
8f905c289d Add reference to test hooks in detailed design 
Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-23 20:08:38 +01:00
David Horstmann
806055edbf Refactor note on preferred poison-test approach 
Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-23 19:53:30 +01:00
David Horstmann
52df620736 Use ASan for memory poisoning as well as Valgrind 
Also add information about ASan from Microsoft docs.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-23 19:49:00 +01:00
David Horstmann
c61ddb2089 Add C language annotation to code block 
Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-23 19:18:50 +01:00
David Horstmann
cbf068dbee Fix broken reference 
Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-23 19:03:10 +01:00
David Horstmann
f889e0fa0a Replace vague 'above' with a reference for ease-of-navigation 
Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-23 19:01:21 +01:00
David Horstmann
ded14a2c02 Add example wrapper function implementation 
Give an example wrapper foir psa_aead_update for the transparent testing
option.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-23 18:58:41 +01:00