2290 Commits

Author SHA1 Message Date
Gilles Peskine
08875d441e CTR_DRBG documentation clarifications
* State explicit whether several numbers are in bits or bytes.
* Clarify whether buffer pointer parameters can be NULL.
* Explain the value of constants that are dependent on the configuration.
2019-10-02 19:16:09 +02:00
Jaeden Amero
c21a9f04f9 Merge remote-tracking branch 'origin/pr/2765' into development
* origin/pr/2765: (28 commits)
  Add set+get tests
  Consolidate tests for set with/without values
  config.py testing: also test the get command
  Compatibility redirect: add copyright notice
  Compatibility redirect: if python3 is not available, try python
  Fix config.py output when a symbol has acquired or lost a value
  Remove redundant test case
  cmake: update interpreter requirement for the test suite generator
  cmake: fix Python requirement
  Test script for config.py
  Documentation improvements
  Fix "#define ... not found" error when using the default file name
  Fix "--force set" without a value sneaking a None in
  Fix --force requiring an argument
  Fix Config.unset() making the name known
  Also search config.h near the script
  Report an error if switching to Python fails
  Fix 'config.py set' without --force
  Fix encoding errors
  Print help when invoked with no arguments
  ...
2019-09-23 17:27:44 +01:00
Jaeden Amero
914a5071b4 Bump Mbed TLS version to 2.19.1 2019-09-18 13:42:36 +01:00
Jaeden Amero
46d61b1e95 Merge remote-tracking branch 'origin/pr/2834' into development
* origin/pr/2834:
  ssl: Remove key exporter bug workaround
  ssl: Disallow modification of hello.random by export
2019-09-13 16:52:14 +01:00
Gilles Peskine
5d46f6a89b Invoke config.py instead of config.pl
git grep -Fl /config.pl | xargs sed -i -e 's!/config\.pl!/config.py!g'

Also:
* Change one comment in include/mbedtls/check_config.h.
* Change PERL to PYTHON in CMakeLists.txt.
2019-09-13 11:04:23 +02:00
Gilles Peskine
5639aef7d7 Uniformize whitespace in commented-out defines 2019-09-13 11:04:23 +02:00
Jaeden Amero
62be28b525 Merge remote-tracking branch 'origin/pr/2469' into development
* origin/pr/2469:
  Enable MBEDTLS_MEMORY_DEBUG in memory buffer alloc test in all.sh
  Remove unnecessary memory buffer alloc unsets
  Disable DTLS proxy tests for MEMORY_BUFFER_ALLOC test
  all.sh: restructure memory allocator tests
  Add missing dependency in memory buffer alloc set in all.sh
  Don't set MBEDTLS_MEMORY_DEBUG through `scripts/config.pl full`
  Add cfg dep MBEDTLS_MEMORY_DEBUG->MBEDTLS_MEMORY_BUFFER_ALLOC_C
  Fix memory leak in CSR test suite on failure
  Fix a memory leak in x509write test suite
  Add all.sh run with full config and ASan enabled
  Add all.sh run with MBEDTLS_MEMORY_BUFFER_ALLOC_C enabled
  Update documentation of exceptions for `config.pl full`
  Adapt all.sh to removal of buffer allocator from full config
  Disable memory buffer allocator in full config
  Check dependencies of MBEDTLS_MEMORY_BACKTRACE in check_config.h
2019-09-12 16:45:55 +01:00
Jaeden Amero
63d813d258 ssl: Disallow modification of hello.random by export
Make client_random and server_random const in
mbedtls_ssl_export_keys_ext_t, so that the key exporter is discouraged
from modifying the client/server hello.

Update examples and tests use const for hello.random as well, to ensure
that the export callbacks are of the proper type.

Fixes #2759
2019-09-12 15:18:25 +01:00
Gilles Peskine
aac3853348 Fix long-standing bug in error code description
MBEDTLS_ERR_ASN1_INVALID_DATA is documented as "not used", but it has
been used since the PolarSSL days.
2019-09-11 18:16:11 +02:00
Gilles Peskine
09c0a2364b mbedtls_asn1_store_named_data: clarify val allocation behavior
Document how mbedtls_asn1_store_named_data allocates val.p in the new
or modified entry.

Change the behavior to be more regular, always setting the new length
to val_len. This does not affect the previous documented behavior
since this aspect was not documented. This does not affect current
usage in Mbed TLS's X.509 module where calls with the same OID always
use the same size for the associated value.
2019-09-11 15:46:45 +02:00
Gilles Peskine
105031b1e1 asn1_write documentation: say that integers must be non-negative
The documentation never said it explicitly, but the ASN.1 library
doesn't support negative integers. Say it explicitly.

Also fix a copypasta error.
2019-09-11 15:46:45 +02:00
Gilles Peskine
bcbe1dfb23 Improve the documentation of ASN.1 parsing functions
Document preconditions on parameters, values changed through pointers,
and error codes.

This commit leaves some issues regarding integers (especially negative
integers) open, because we don't have a policy decision on how to
handle them yet.
2019-09-11 15:46:44 +02:00
Jaeden Amero
9298dca14d
Merge pull request #185 from gilles-peskine-arm/harvard-md
Remove method dispatch from md
2019-09-10 18:38:39 +01:00
Hanno Becker
bfaa718e90 Add cfg dep MBEDTLS_MEMORY_DEBUG->MBEDTLS_MEMORY_BUFFER_ALLOC_C 2019-09-06 07:44:37 -04:00
Hanno Becker
af46c5f9eb Check dependencies of MBEDTLS_MEMORY_BACKTRACE in check_config.h 2019-09-06 07:40:26 -04:00
Janos Follath
75f2c20f9c ECDSA: Explain limitations of constant blinding 2019-09-05 11:18:58 +01:00
Janos Follath
1231d210e1 Add warning for alternative ECDSA implementations
Alternative implementations are often hardware accelerators and might
not need an RNG for blinding. But if they do, then we make them misuse
the RNG in the deterministic case.

There are several way around this:
- Exposing a lower level function for replacement. This would be the
optimal solution, but litters the API and is not backward compatible.
- Introducing a new compile time option for replacing the deterministic
function. This would mostly cover the same code as
MBEDTLS_ECDSA_DETERMINISTIC and would be yet another compile time flag.
- Reusing the existing MBEDTLS_ECDSA_DETERMINISTIC macro. This changes
the algorithm used by the PK layer from deterministic to randomised if
the alternative implementation is present.

This commit implements the third option. This is a temporary solution
and should be fixed at the next device driver API change.
2019-09-05 11:18:58 +01:00
Janos Follath
e65e0597a8 Deprecate the old deterministic ECDSA function
The current interface does not allow passing an RNG, which is needed for
blinding. Using the scheme's internal HMAC-DRBG results the same
blinding values for the same key and message, diminishing the
effectiveness of the countermeasure. A new function
`mbedtls_ecdsa_det_ext` is available to address this problem.
2019-09-05 11:18:58 +01:00
Janos Follath
dca667ac80 Add a safer deterministic ECDSA function
`mbedtls_ecdsa_sign_det` reuses the internal HMAC-DRBG instance to
implement blinding. The advantage of this is that the algorithm is
deterministic too, not just the resulting signature. The drawback is
that the blinding is always the same for the same key and message.
This diminishes the efficiency of blinding and leaks information about
the private key.

A function that takes external randomness fixes this weakness.
2019-09-05 11:18:58 +01:00
Jaeden Amero
5656623d9e
Merge pull request #240 from Ko-/development
Enable 64-bit bignum limbs and add optimized multiplication for Aarch64
2019-09-04 11:11:51 +01:00
Jaeden Amero
f66e7ea7f3
Merge pull request #178 from mpg/sha512-smaller
New config.h option to make SHA-512 smaller
2019-09-04 10:19:28 +01:00
Jaeden Amero
481659a9c0 Merge remote-tracking branch 'origin/development' into development-restricted
* origin/development:
  Fix uninitialized variable in x509_crt
  Add a ChangeLog entry for mbedtls_net_close()
  Added mbedtls_net_close and use it in ssl_fork_server to correctly disassociate the client socket from the parent process and the server socket from the child process.
  Add ChangeLog entry
  fix memory leak in mpi_miller_rabin()
2019-09-03 19:42:19 +01:00
Jaeden Amero
8dd6bc7ac4 Merge remote-tracking branch 'origin/pr/2803' into development
* origin/pr/2803:
  Add a ChangeLog entry for mbedtls_net_close()
  Added mbedtls_net_close and use it in ssl_fork_server to correctly disassociate the client socket from the parent process and the server socket from the child process.
2019-09-03 16:41:51 +01:00
Ko-
cb260bb30d Fix -O0 build for Aarch64 bignum multiplication. 2019-09-02 13:44:57 +02:00
Ko-
05cff953c9 Make GNUC-compatible compilers use the right mbedtls_t_udbl again on Aarch64 builds. 2019-09-02 13:44:57 +02:00
Ko-
cc1871e674 Add optimized bignum multiplication for Aarch64.
x0-x3 are skipped such that function parameters to not have to be moved.
MULADDC_INIT and MULADDC_STOP are mostly empty because it is more
efficient to keep everything in registers (and that should easily be
possible). I considered a MULADDC_HUIT implementation, but could not
think of something that would be more efficient than basically 8
consecutive MULADDC_CORE. You could combine the loads and stores, but
it's probably more efficient to interleave them with arithmetic,
depending on the specific microarchitecture. NEON allows to do a
64x64->128 bit multiplication (and optional accumulation) in one
instruction, but is not great at handling carries.
2019-09-02 13:44:57 +02:00
Ko-
03d2daf55c Enable 64-bit limbs for all Aarch64 builds.
GCC and Clang do not define __ARMCC_VERSION when building for Aarch64.
Yet they should also use 64-bit limbs for Aarch64 builds.
2019-09-02 13:44:57 +02:00
Jaeden Amero
4cf0e7e4d2 Merge remote-tracking branch 'origin/development' into development-restricted
* origin/development: (42 commits)
  Handle deleting non-existant files on Windows
  Update submodule
  Use 3rdparty headers from the submodule
  Add Everest components to all.sh
  3rdparty: Add config checks for Everest
  Fix macros in benchmark.c
  Update generated files
  3rdparty: Fix inclusion order of CMakeLists.txt
  Fix trailing whitespace
  ECDH: Fix inclusion of platform.h for proper use of MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED
  ECDH: Fix use of ECDH API in full handshake benchmark
  ECDH: Removed unnecessary calls to mbedtls_ecp_group_load in ECDH benchmark
  ECDH: Fix Everest x25519 make_public
  Fix file permissions
  3rdparty: Rename THIRDPARTY_OBJECTS
  3rdparty: Update description of MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED
  3rdparty: Fix Makefile coding conventions
  ECDSA: Refactor return value checks for mbedtls_ecdsa_can_do
  Add a changelog entry for Everest ECDH (X25519)
  Document that curve lists can include partially-supported curves
  ...
2019-08-30 16:24:18 +01:00
Jaeden Amero
49fcbeab14 Merge remote-tracking branch 'origin/pr/2799' into development
Manually edit ChangeLog to ensure correct placement of ChangeLog notes.

* origin/pr/2799: (42 commits)
  Handle deleting non-existant files on Windows
  Update submodule
  Use 3rdparty headers from the submodule
  Add Everest components to all.sh
  3rdparty: Add config checks for Everest
  Fix macros in benchmark.c
  Update generated files
  3rdparty: Fix inclusion order of CMakeLists.txt
  Fix trailing whitespace
  ECDH: Fix inclusion of platform.h for proper use of MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED
  ECDH: Fix use of ECDH API in full handshake benchmark
  ECDH: Removed unnecessary calls to mbedtls_ecp_group_load in ECDH benchmark
  ECDH: Fix Everest x25519 make_public
  Fix file permissions
  3rdparty: Rename THIRDPARTY_OBJECTS
  3rdparty: Update description of MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED
  3rdparty: Fix Makefile coding conventions
  ECDSA: Refactor return value checks for mbedtls_ecdsa_can_do
  Add a changelog entry for Everest ECDH (X25519)
  Document that curve lists can include partially-supported curves
  ...
2019-08-30 15:50:45 +01:00
Jaeden Amero
d031378ff5 Merge remote-tracking branch 'origin/development' into development-restricted
* origin/development:
  Update library version to 2.19.0
  ssl-opt.sh: Add var's of context s11n tests for ChaChaPoly,CCM,GCM
  ssl-opt.sh: Duplicate context serialization tests for CID
  Fix SSL context deserialization
2019-08-30 15:30:58 +01:00
Darryl Green
fe997c646b Update library version to 2.19.0 2019-08-30 13:02:16 +01:00
Christoph M. Wintersteiger
9c1b56b43a 3rdparty: Add config checks for Everest 2019-08-29 16:12:38 +01:00
Christoph M. Wintersteiger
e1dfc9884a Fix file permissions 2019-08-29 16:12:38 +01:00
Christoph M. Wintersteiger
50d9f095ec 3rdparty: Update description of MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED 2019-08-29 16:12:38 +01:00
Christoph M. Wintersteiger
181f284e39 config.h: Silence missing documentation warning 2019-08-29 16:12:38 +01:00
Christoph M. Wintersteiger
6cddd30beb ECDH: Disable Everest by default 2019-08-29 16:12:38 +01:00
Christoph M. Wintersteiger
e50b9704d0 ECDH: Fix whitespace and doxygen comment 2019-08-29 16:12:38 +01:00
Christoph M. Wintersteiger
02b8048846 ECDH: Add Everest Curve25519 config.h option 2019-08-29 16:12:38 +01:00
Jaeden Amero
64f264332f Merge remote-tracking branch 'origin/development' into development-restricted
* origin/development:
  Update the crypto submodule
  Use multipart PSA key derivation API
  platform: Include stdarg.h where needed
  Update Mbed Crypto to contain mbed-crypto#152
  CMake: Add a subdirectory build regression test
  README: Enable builds as a CMake subproject
  ChangeLog: Enable builds as a CMake subproject
  Remove use of CMAKE_SOURCE_DIR
  Update library version to 2.18.0
2019-08-29 14:14:05 +01:00
Jaeden Amero
4e0db5642a Merge branch 'mbedtls-2.18' into development
Bring Mbed TLS 2.18.0 and 2.18.1 release changes back into the
development branch. We had branched to release 2.18.0 and 2.18.1 in
order to allow those releases to go out without having to block work on
the `development` branch.

Manually resolve conflicts in the Changelog by moving all freshly addded
changes to a new, unreleased version entry.

Reject changes to include/mbedtls/platform.h made in the mbedtls-2.18
branch, as that file is now sourced from Mbed Crypto.

* mbedtls-2.18:
  platform: Include stdarg.h where needed
  Update Mbed Crypto to contain mbed-crypto#152
  CMake: Add a subdirectory build regression test
  README: Enable builds as a CMake subproject
  ChangeLog: Enable builds as a CMake subproject
  Remove use of CMAKE_SOURCE_DIR
  Update library version to 2.18.0
2019-08-27 11:18:28 +01:00
Jaeden Amero
f1cdceae0d Merge remote-tracking branch 'origin/development' into development-restricted
* origin/development: (114 commits)
  Don't redefine calloc and free
  Add changelog entry to record checking
  Fix compiler warning
  Add debug messages
  Remove duplicate entries from ChangeLog
  Fix parameter name in doxygen
  Add missing guards for mac usage
  Improve reability and debugability of large if
  Fix a typo in a comment
  Fix MSVC warning
  Fix compile error in reduced configurations
  Avoid duplication of session format header
  Implement config-checking header to context s11n
  Provide serialisation API only if it's enabled
  Fix compiler warning: comparing signed to unsigned
  Actually reset the context on save as advertised
  Re-use buffer allocated by handshake_init()
  Enable serialisation tests in ssl-opt.sh
  Change requirements for setting timer callback
  Add setting of forced fields when deserializing
  ...
2019-08-27 10:09:10 +01:00
Jarno Lamsa
b9ca1b0868 Fix parameter name in doxygen 2019-08-23 13:11:31 +03:00
Manuel Pégourié-Gonnard
5c0e377532 Provide serialisation API only if it's enabled 2019-08-23 13:11:31 +03:00
Manuel Pégourié-Gonnard
9df5a82079 Actually reset the context on save as advertised
Also fix some wording in the documentation while at it.
2019-08-23 13:11:31 +03:00
Manuel Pégourié-Gonnard
13c8e68477 Change requirements for setting timer callback
The code wants timer callbacks to be set (checked in fetch_input()), and can't
easily check whether we're using nbio, so it seems easier to require the
callbacks to be always set rather than only with nbio as was previously done.
2019-08-23 13:11:31 +03:00
Manuel Pégourié-Gonnard
4b7e6b925f Add session saving/loading
For now, the header (version+format bytes) is duplicated. This might be
optimized later.
2019-08-23 13:11:31 +03:00
Manuel Pégourié-Gonnard
4c90e858b5 Add (stub) header writing and checking
The number of meaning of the flags will be determined later, when handling the
relevant struct members. For now three bytes are reserved as an example, but
this number may change later.
2019-08-23 13:11:31 +03:00
Manuel Pégourié-Gonnard
1aaf66940e Implement usage checks in context_save()
Enforce restrictions indicated in the documentation.

This allows to make some simplifying assumptions (no need to worry about
saving IVs for CBC in TLS < 1.1, nor about saving handshake data) and
guarantees that all values marked as "forced" in the design document have the
intended values and can be skipped when serialising.

Some of the "forced" values are not checked because their value is a
consequence of other checks (for example, session_negotiated == NULL outside
handshakes). We do however check that session and transform are not NULL (even
if that's also a consequence of the initial handshake being over) as we're
going to dereference them and static analyzers may appreciate the info.
2019-08-23 13:11:31 +03:00
Manuel Pégourié-Gonnard
96fb0ee9cf Save Hello random bytes for later use 2019-08-23 13:11:31 +03:00
Manuel Pégourié-Gonnard
d0a86f96dc Clarify documentation of mbedtls_ssl_context_load() 2019-08-23 12:52:29 +03:00