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279 Commits

Author SHA1 Message Date
David Horstmann
4e54abf182 Add section on possible use of Valgrind tracing 
Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-19 17:59:45 +01:00
David Horstmann
05ca3d9a1b Expand design for validation of careful access 
Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-19 16:45:37 +01:00
David Horstmann
a72b4ca734 Modify optimize-testing instructions 
Mention -flto and whole-program optimization as this is the most
important aspect.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-19 15:22:15 +01:00
David Horstmann
3f7e42a750 Move implementation by module table earlier 
Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-19 15:14:50 +01:00
David Horstmann
dae0ad439f Add more detail in design of memory poisoning 
Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-19 15:12:34 +01:00
David Horstmann
0bd87f5959 Change unsigned int to uint8_t 
Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-19 13:45:21 +01:00
David Horstmann
23661cc232 Detailed design of memory protection strategy 
Signed-off-by: David Horstmann <david.horstmann@arm.com>
 2023-10-18 18:20:33 +01:00
Gilles Peskine
df62f1a010
Merge pull request #1106 from gilles-peskine-arm/psa-shared-buffers-requirements 
PSA shared buffers requirements
 2023-10-17 20:38:00 +02:00
Gilles Peskine
8ebeb9c180 Test for read-read inconsistency with mprotect and ptrace/gdb 
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-10-16 18:37:02 +02:00
Gilles Peskine
87889ebe86 Fix editorial error with semantic consequences 
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-10-16 15:40:02 +02:00
Gilles Peskine
a3ce6437bf Typos 
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-10-16 15:39:37 +02:00
Gilles Peskine
1f2802c403 Suggest validating copy by memory poisoning 
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-10-13 21:49:17 +02:00
Gilles Peskine
6998721c69 Add a section skeleton for copy bypass 
It's something we're likely to want to do at some point.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-10-13 20:05:32 +02:00
Gilles Peskine
7bc1bb65e9 Short explanations of what is expected in the design sections 
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-10-13 20:05:25 +02:00
Gilles Peskine
35de1f7a7d Distinguish whole-message signature from other asymmetric cryptography 
Whole-message signature may process the message multiple times (EdDSA
signature does it).

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-10-13 20:04:16 +02:00
Gilles Peskine
9cad3b3a70 Design change for cipher/AEAD 
There are many reasons why a driver might violate the security requirements
for plaintext or ciphertext buffers, so mandate copying.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-10-13 20:03:18 +02:00
Gilles Peskine
2859267a27 Clarify terminology: built-in driver 
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-10-13 20:02:00 +02:00
Gilles Peskine
db00543b3a Add a section on write-read feedback 
It's a security violation, although it's not clear whether it really needs
to influence the design.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-10-13 19:57:53 +02:00
Gilles Peskine
352095ca86 Simplify the relaxed output-output rule 
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-10-13 19:56:22 +02:00
Gilles Peskine
60c453ee72 Expand explanations of the vulnerabilities 
Add a few more examples.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-10-13 19:07:56 +02:00
Gilles Peskine
8daedaeac9 Fix typos and copypasta 
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-10-13 18:47:29 +02:00
Gilles Peskine
f7806ca782 Analyze requirements for protection of arguments in shared memory 
Propose a dual-approach strategy where some buffers are copied and others
can remain shared.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-10-12 16:00:11 +02:00
Gilles Peskine
bb5d907aa9 Automatically pick up all Markdown files 
Assume GNU make. We already do with the toplevel makefile.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-10-11 20:47:44 +02:00
Gilles Peskine
32743619a2
Merge pull request #8114 from yanesca/threading_requirements_update 
Refine thread safety requirements
 2023-10-09 11:22:59 +00:00
Xiaokang Qian
db3035b8bc Fix a typo in psa-crypto-implementation-structure.md 
Signed-off-by: Xiaokang Qian <xiaokang.qian@arm.com>
 2023-09-26 09:09:20 +00:00
Xiaokang Qian
76e55a20dd Change the documenti about psa_crypto_driver_wrappers.c{h} 
Signed-off-by: Xiaokang Qian <xiaokang.qian@arm.com>
 2023-09-26 09:09:20 +00:00
Xiaokang Qian
1198e43644 Change the description of auto-generated driver dispatch files 
Signed-off-by: Xiaokang Qian <xiaokang.qian@arm.com>
 2023-09-26 09:09:20 +00:00
Xiaokang Qian
845693c513 Change comments to psa_crypto_driver_wrappers.h 
Signed-off-by: Xiaokang Qian <xiaokang.qian@arm.com>
 2023-09-26 09:09:20 +00:00
Janos Follath
b4527fbd82 Add clarifications to the threading requirements 
Signed-off-by: Janos Follath <janos.follath@arm.com>
 2023-08-31 14:01:24 +01:00
Janos Follath
b6954730f0
Fix typo 
Co-authored-by: Ronald Cron <ronald.cron@arm.com>
Signed-off-by: Janos Follath <janos.follath@arm.com>
 2023-08-31 13:54:21 +01:00
Janos Follath
35633dd977 Add threading non-requirement 
State explicitly the non-requirement that it's ok for psa_destroy_key to
block waiting for a driver.

Signed-off-by: Janos Follath <janos.follath@arm.com>
 2023-08-31 08:31:19 +01:00
Janos Follath
15d9ec29be Improve thread safety presentation 
- Use unique section titles so that there are unique anchors
- Make list style consistent between similar sections

Signed-off-by: Janos Follath <janos.follath@arm.com>
 2023-08-31 08:22:21 +01:00
Janos Follath
0385c2815c Tighten thread safety requirements 
We shouldn't violate the requirement that the key identifier can be
reused. In practice, a key manager may destroy a key that's in use by
another process, and the privileged world containing the key manager and
the crypto service should not be perturbed by an unprivileged process.

With respect to blocking, again, a key manager should not be blocked
indefinitely by an unprivileged application.

These are desirable properties even in the short term.

Signed-off-by: Janos Follath <janos.follath@arm.com>
 2023-08-30 16:44:04 +01:00
Janos Follath
7ec993d804 Refine thread safety requirements 
Split and refine short term requirements for key deletion.

Signed-off-by: Janos Follath <janos.follath@arm.com>
 2023-08-23 16:04:48 +01:00
Gilles Peskine
33291ba35f
Merge pull request #5538 from gilles-peskine-arm/psa-thread_safety-doc 
PSA thread safety requirements
 2023-08-10 16:21:55 +02:00
Gilles Peskine
9aa93c8e78 Added a note about new primitives for secure destruction 
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-08-07 16:32:09 +02:00
Gilles Peskine
584bf985f5 Elaborate on psa_destroy_key requirements 
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-08-07 16:29:19 +02:00
Gilles Peskine
d3a797710a psa_is_key_slot_occupied: change to using the key identifier 
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-08-02 18:36:06 +02:00
Valerio Setti
ab02d391cb test: use only rev-parse for getting the current branch 
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
 2023-07-31 16:47:07 +02:00
Valerio Setti
ccb0344969 test: add GIT alternative commands for older GIT versions 
The Docker container used for the CI has Git version 2.7.4 which
does not support the "git branch --show-current" command since this
was added in version 2.22.
Therefore this commit adds an alternative version for old Git versions.

Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
 2023-07-31 15:07:49 +02:00
Dave Rodgman
e183ecef3d
Merge pull request #7136 from yanrayw/5692-record-compatsh-test-cases 
Record the outcome of each test case in compat.sh
 2023-07-10 12:08:32 +01:00
Gilles Peskine
0ca2a1f51b
Merge pull request #7646 from gilles-peskine-arm/psa-driver-transaction-testing-spec 
Storage resilience with stateful secure elements: design document
 2023-06-29 18:25:52 +02:00
Gilles Peskine
34a201774e More about whether to have the driver key id in the transaction list 
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-06-13 21:11:43 +02:00
Gilles Peskine
009c06b973 Discuss the cost of a get_key_attributes entry point 
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-06-13 21:11:43 +02:00
Gilles Peskine
4e5088476e Finish test strategy 
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-05-30 23:34:07 +02:00
Gilles Peskine
44bbf29597 Write up the transaction/recovery processess 
Still missing: details of part of the testing

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-05-24 20:35:49 +02:00
Gilles Peskine
76a852f8fb Design document for storage resilience 
Explore possibilities for implementing stateful secure elements with
storage. Choose one.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-05-24 09:37:30 +02:00
Gilles Peskine
63df4ec3ca
Merge pull request #7589 from daverodgman/pr4990 
Replace references to Mbed Crypto (rebase)
 2023-05-16 19:14:51 +02:00
Gilles Peskine
7e37aa85a2
Merge pull request #5904 from gilles-peskine-arm/psa-doc-implementing-new-mechanism 
Check list for implementing a new mechanism in PSA crypto
 2023-05-16 14:04:15 +02:00
Gilles Peskine
de4cbc54d3 Fix copypasta 
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2023-05-16 12:04:57 +02:00