Commit graph

248 commits

Author SHA1 Message Date
Andrzej Kurek
63439eda62 Return an error for IV lengths other than 12 with ChaCha20+Poly1305
The implementation was silently overwriting the IV length to 12
even though the caller passed a different value.
Change the behavior to signal that a different length is not supported.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
2022-01-14 16:31:54 +01:00
Andrzej Kurek
33ca6af8a3 Return an error for IV lengths other than 12 with ChaCha20
The implementation was silently overwriting the IV length to 12
even though the caller passed a different value.
Change the behavior to signal that a different length is not supported.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
2022-01-14 16:31:54 +01:00
Gilles Peskine
cd74298c83 mbedtls_cipher_check_tag: jump on error for more robustness to refactoring
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2021-12-13 17:01:25 +01:00
Gilles Peskine
e7835d92c1 mbedtls_cipher_check_tag: zeroize expected tag on tag mismatch
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2021-12-13 12:32:43 +01:00
Gabor Mezei
be7b21da22
Merge branch 'development' into 3649_move_constant_time_functions_into_separate_module 2021-11-24 10:44:13 +01:00
Mateusz Starzyk
4cb9739038 Use separate MBEDTLS_MODE for the CCM*.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-10-27 10:42:31 +02:00
Mateusz Starzyk
594215be6e Add support for CCM*-no-tag to PSA.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-10-21 11:33:41 +02:00
Gabor Mezei
90437e3762
Rename constant-time functions to have mbedtls_ct prefix
Rename functions to better suite with the module name.

Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
2021-10-20 11:59:27 +02:00
Gabor Mezei
765862c4f3
Move mbedtls_cf_memcmp to a new public header
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
2021-10-19 12:22:25 +02:00
Przemyslaw Stekiel
80c6a8e1a6 Add PSA support for MBEDTLS_CIPHER_AES_128_ECB
Signed-off-by: Przemyslaw Stekiel <przemyslaw.stekiel@mobica.com>
2021-09-29 12:39:21 +02:00
gabor-mezei-arm
4602564d7a
Unify memcmp functions
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
2021-09-28 16:33:47 +02:00
gabor-mezei-arm
db9a38c672
Move contatnt-time memcmp functions to the contant-time module
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
2021-09-28 16:16:14 +02:00
Gilles Peskine
5a7be10419 Add output_length parameter to mbedtls_gcm_finish
Without this parameter, it would be hard for callers to know how many bytes
of output the function wrote into the output buffer. It would be possible,
since the cumulated output must have the same length as the cumulated input,
but it would be cumbersome for the caller to keep track.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2021-06-23 21:51:32 +02:00
Ronald Cron
49fef37ebf
Merge pull request #4342 from gilles-peskine-arm/gcm-update-any-length
GCM: allow arbitrary lengths for update
Only the ABI-API-checking job failed and this is expected thus good to go.
2021-05-20 15:08:55 +02:00
TRodziewicz
85dfc4de20 Applying current changes
Signed-off-by: TRodziewicz <tomasz.rodziewicz@mobica.com>
2021-04-30 00:07:04 +02:00
TRodziewicz
18efb73743 Remove deprecated functions and constants.
Signed-off-by: TRodziewicz <tomasz.rodziewicz@mobica.com>
2021-04-29 23:12:19 +02:00
Tomasz Rodziewicz
d6c246f5bf
Merge branch 'development_3.0' into remove_depr_error_codes 2021-04-21 12:31:43 +02:00
Gilles Peskine
295fc13ef3 Split mbedtls_gcm_update_ad out of mbedtls_gcm_starts
The GCM interface now has separate functions to start the operation
and to pass the associated data.

This is in preparation for allowing the associated data to be passed
in chunks with repeatated calls to mbedtls_gcm_update_ad().

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2021-04-15 21:34:33 +02:00
Gilles Peskine
a56c448636 Add output length parameters to mbedtls_gcm_update
Alternative implementations of GCM may delay the output of partial
blocks from mbedtls_gcm_update(). Add an output length parameter to
mbedtls_gcm_update() to allow such implementations to delay the output
of partial blocks. With the software implementation, there is no such
delay.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2021-04-15 21:34:33 +02:00
Gilles Peskine
9461e45a17 Add output parameter to mbedtls_gcm_finish
Alternative implementations of GCM may delay the output of partial
blocks from mbedtls_gcm_update(). Add an output parameter to
mbedtls_gcm_finish() to allow such implementations to pass the final
partial block back to the caller. With the software implementation,
this final output is always empty.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2021-04-15 18:41:38 +02:00
TRodziewicz
b579ccd529 The still used deprecated error codes replaced with _PLATFORM_ ones
Signed-off-by: TRodziewicz <tomasz.rodziewicz@mobica.com>
2021-04-13 14:29:29 +02:00
Chris Jones
daacb59c2e Rename <pk/md/cipher>_internal.h to *_wrap.h
Revert changes introduced in 50518f4195
as it is now clear that these headers are internal without the
`*_internal.h` suffix.

Signed-off-by: Chris Jones <christopher.jones@arm.com>
2021-03-10 12:52:37 +00:00
Chris Jones
e2191cd789 Update includes to use library/ instead of include/mbedtls/
Simple find and replace using `#include (<|")mbedtls/(.*)_internal.h(>|")`
and `#include $1$2_internal.h$3`.

Also re-generated visualc files by running
`scripts/generate_visualc_files.pl`.

Signed-off-by: Chris Jones <christopher.jones@arm.com>
2021-03-10 12:52:37 +00:00
Manuel Pégourié-Gonnard
841b6fa97f Fix unused param warnings in auth_xxcrypt_ext()
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
2020-12-07 10:42:21 +01:00
Gilles Peskine
4e0a4d444d Clarifying comment
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2020-12-07 10:08:30 +01:00
Gilles Peskine
a56d3d9e75 cipher_auth_xxcrypt_ext: Make NIST_KW case more robust
Don't invoke classic NIST_KW in case PSA gains support for NIST_KW.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2020-12-07 10:08:10 +01:00
Gilles Peskine
e09aeb4923 Remove redundant NIST_KW checks in cipher_auth_xxcrypt()
The internal functions mbedtls_cipher_aead_{encrypt,decrypt} reject
unsupported algorithms, so there's no need for an additional check in
the legacy wrappers.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2020-12-07 10:07:26 +01:00
Gilles Peskine
70edd689a8 cipher_auth_xxcrypt(): fix some null pointer handling
Make sure that if a buffer is allowed to be empty, a null pointer is
accepted if the buffer length is 0. This was already the case for most
but not all arguments to mbedtls_cipher_auth_{en,de}crypt{,_ext}.

Make sure to pass NULL for an empty buffer in the tests.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2020-12-07 09:58:26 +01:00
Manuel Pégourié-Gonnard
513c243317 Deprecate mbedtls_cipher_auth_xxcrypt()
This temporarily breaks all.sh '*deprecated*' (deprecated functions still used
in the library), which will be fix in the next commit.

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
2020-12-03 12:25:09 +01:00
Manuel Pégourié-Gonnard
f2ffbc4387 Stop supporting NIST_KW in cipher_auth_xxcrypt()
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
2020-12-03 12:25:09 +01:00
Manuel Pégourié-Gonnard
faddf98bea Implement cipher_auth_{en,de}crypt_ext()
Work in progress: next step is to test it!

Extract the part that is common with non-ext version to a new internal
function. (We can't just use the non-ext version for that, as it's going to be
deprecated.)

Currently the NIST_KW part is somewhat duplicated between the ext
and non-ext versions, but that's OK because it will soon be removed from the
non-ext version.

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
2020-12-03 10:42:46 +01:00
Bence Szépkúti
1e14827beb Update copyright notices to use Linux Foundation guidance
As a result, the copyright of contributors other than Arm is now
acknowledged, and the years of publishing are no longer tracked in the
source files.

Also remove the now-redundant lines declaring that the files are part of
MbedTLS.

This commit was generated using the following script:

# ========================
#!/bin/sh

# Find files
find '(' -path './.git' -o -path './3rdparty' ')' -prune -o -type f -print | xargs sed -bi '

# Replace copyright attribution line
s/Copyright.*Arm.*/Copyright The Mbed TLS Contributors/I

# Remove redundant declaration and the preceding line
$!N
/This file is part of Mbed TLS/Id
P
D
'
# ========================

Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
2020-08-19 10:35:41 +02:00
Gilles Peskine
db09ef6d22 Include common.h instead of config.h in library source files
In library source files, include "common.h", which takes care of
including "mbedtls/config.h" (or the alternative MBEDTLS_CONFIG_FILE)
and other things that are used throughout the library.

FROM=$'#if !defined(MBEDTLS_CONFIG_FILE)\n#include "mbedtls/config.h"\n#else\n#include MBEDTLS_CONFIG_FILE\n#endif' perl -i -0777 -pe 's~\Q$ENV{FROM}~#include "common.h"~' library/*.c 3rdparty/*/library/*.c scripts/data_files/error.fmt scripts/data_files/version_features.fmt

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2020-07-02 11:26:57 +02:00
Gilles Peskine
a2bdcb9e3a Remove redundant block_size validity check
Check the value only once, as soon as we've obtained it.
2020-01-21 15:02:14 +01:00
Janos Follath
24eed8d2d2 Initialise return values to an error
Initialising the return values to and error is best practice and makes
the library more robust.
2019-12-03 16:07:18 +00:00
Gilles Peskine
d2d45c1738 Convert cipher and pk to PSA attribute-based key creation
This fixes the build under MBEDTLS_USE_PSA_CRYPTO.
2019-06-05 11:34:54 +02:00
Gilles Peskine
2938268fb4 Merge remote-tracking branch 'upstream-crypto/development' into psa-api-1.0-beta-merge_development_20190524
Conflicts:
* library/ssl_cli.c, library/ssl_tls.c:
  Removed on the development branch. Keep them removed.
* include/psa/crypto_extra.h, library/psa_crypto_storage.c,
  tests/suites/test_suite_psa_crypto.data,
  tests/suites/test_suite_psa_crypto.function,
  tests/suites/test_suite_psa_crypto_persistent_key.data,
  tests/suites/test_suite_psa_crypto_slot_management.data,
  tests/suites/test_suite_psa_crypto_slot_management.function:
  Modified on the development branch only to implement the enrollment
  algorithm, which has been reimplemented on the API branch.
  Keep the API branch.
2019-05-29 09:57:29 +02:00
Gilles Peskine
87a5e565f4 Rename functions that inject key material to an allocated handle
This commit starts a migration to a new interface for key creation.
Today, the application allocates a handle, then fills its metadata,
and finally injects key material. The new interface fills metadata
into a temporary structure, and a handle is allocated at the same time
it gets filled with both metadata and key material.

This commit was obtained by moving the declaration of the old-style
functions to crypto_extra.h and renaming them with the to_handle
suffix, adding declarations for the new-style functions in crypto.h
under their new name, and running

    perl -i -pe 's/\bpsa_(import|copy|generator_import|generate)_key\b/$&_to_handle/g' library/*.c tests/suites/*.function programs/psa/*.c
    perl -i -pe 's/\bpsa_get_key_lifetime\b/$&_from_handle/g' library/*.c tests/suites/*.function programs/psa/*.c

Many functions that are specific to the old interface, and which will
not remain under the same name with the new interface, are still in
crypto.h for now.

All functional tests should still pass. The documentation may have
some broken links.
2019-04-24 15:24:45 +02:00
Jaeden Amero
521dbc67da Merge remote-tracking branch 'tls/development' into development
Merge Mbed TLS at f790a6cbee into Mbed Crypto.

Resolve conflicts by performing the following:
    - Reject changes to README.md
    - Don't add crypto as a submodule
    - Remove test/ssl_cert_test from programs/Makefile
    - Add cipher.nist_kw test to tests/CMakeLists.txt
    - Reject removal of crypto-specific all.sh tests
    - Reject update to SSL-specific portion of component_test_valgrind
      in all.sh
    - Reject addition of ssl-opt.sh testing to component_test_m32_o1 in
      all.sh

* tls/development: (87 commits)
  Call mbedtls_cipher_free() to reset a cipher context
  Don't call mbedtls_cipher_setkey twice
  Update crypto submodule
  Minor fixes in get certificate policies oid test
  Add certificate policy oid x509 extension
  cpp_dummy_build: Add missing header psa_util.h
  Clarify comment mangled by an earlier refactoring
  Add an "out-of-box" component
  Run ssl-opt.sh on 32-bit runtime
  Don't use debug level 1 for informational messages
  Skip uncritical unsupported extensions
  Give credit to OSS-Fuzz for #2404
  all.sh: remove component_test_new_ecdh_context
  Remove crypto-only related components from all.sh
  Remove ssl_cert_test sample app
  Make CRT callback tests more robust
  Rename constant in client2.c
  Document and test flags in x509_verify
  Fix style issues and a typo
  Fix a rebase error
  ...
2019-04-17 12:12:24 +01:00
Jack Lloyd
5f28999433 Wrap lines at 80 columns 2019-04-02 10:07:28 -07:00
Jack Lloyd
ffdf28851d Add NIST keywrap as a cipher mode
Closes #2003 see also #1658
2019-04-02 10:02:55 -07:00
Jaeden Amero
3497323f79 Initialize PSA Crypto operation contexts
It is now required to initialize PSA Crypto operation contexts before
calling psa_*_setup(). Otherwise, one gets a PSA_ERROR_BAD_STATE error.
2019-02-20 10:58:55 +00:00
Jaeden Amero
fe96fbec2c Initialize PSA Crypto operation contexts
It is now required to initialize PSA Crypto operation contexts before
calling psa_*_setup(). Otherwise, one gets a PSA_ERROR_BAD_STATE error.
2019-02-20 10:51:42 +00:00
Jaeden Amero
67ea2c5e6d Merge branch 'development-psa-proposed' into development
Resolve conflicts by performing the following.

- Take the upstream Mbed TLS ChangeLog verbatim.
- Reject changes to Makefiles and CMake that are related to using Mbed
  Crypto as a submodule. It doesn't make sense to use Mbed Crypto as a
  submodule of itself.
- Reject README changes, as Mbed Crypto has its own, different README.
- Reject PSA-related changes to config.h. We don't want to disable the
  availability of the PSA Crypto API by default in the Mbed Crypto
  config.h.
- Don't inadvertently revert dead code removal in
  mbedtls_cipher_write_tag() which was added in f2a7529403 ("Fix
  double return statement in cipher.c")
- Where Mbed Crypto already had some MBEDTLS_USE_PSA_CRYPTO code (from
  past companion PRs) take the latest version from Mbed TLS which
  includes integration with MBEDTLS_CHECK_PARAMS.
- Update the version of the shared library files to match what's
  currently present in Mbed TLS.
- Reject removal of testing with PSA from config full tests.
- Resolve conflicts in test tests/suites/helpers.function, where both
  Mbed Crypto and Mbed TLS both added documentation for TEST_ASSERT.
  Combine text from both documentation efforts.
- Reject adding a submodule of ourselves.
- Reject addition of submodule tests in all.sh.
- Reject addition of submodule to library path in
  tests/scripts/run-test-suites.pl.
- Avoid using USE_CRYPTO_SUBMODULE=1 in
  component_test_use_psa_crypto_full_cmake_asan() in all.sh.
2019-02-14 15:58:43 +00:00
Manuel Pégourié-Gonnard
f2a7529403 Fix double return statement in cipher.c
This was introduced in ce1ddee13a
2019-02-05 13:13:21 +01:00
Andrzej Kurek
d142856846 cipher: remove unnecessary precondition
Already checked by parameter validation macros
2019-02-05 05:11:03 -05:00
Andrzej Kurek
de5a007316 Merge development commit f352f7 into development-psa 2019-02-01 07:03:03 -05:00
Andrzej Kurek
c470b6b021 Merge development commit 8e76332 into development-psa
Additional changes to temporarily enable running tests:
ssl_srv.c and test_suite_ecdh use mbedtls_ecp_group_load instead of
mbedtls_ecdh_setup
test_suite_ctr_drbg uses mbedtls_ctr_drbg_update instead of 
mbedtls_ctr_drbg_update_ret
2019-01-31 08:20:20 -05:00
Hanno Becker
2169a5e54d PSA: Adapt pk.c, pk_wrap.c, cipher.c to new key policy init API 2019-01-25 14:36:28 +00:00
Hanno Becker
242da1e2c2 PSA: Adapt cipher.c, pk.c, pk_wrap.c to new key slot allocation API 2019-01-25 14:36:28 +00:00
Hanno Becker
f99c2ec9d7 PSA: Adapt pk.c, pk_wrap.c, cipher.c to new key policy init API 2019-01-25 14:36:07 +00:00
Hanno Becker
e34f636f8d PSA: Adapt cipher.c, pk.c, pk_wrap.c to new key slot allocation API 2019-01-25 14:31:06 +00:00
Andrzej Kurek
f410a5c251 Fix indentation of documentation 2019-01-23 06:23:31 -05:00
Andrzej Kurek
08dfceaba4 cipher: fixed key ownership scope
Indicate key ownership earlier, so that it gets destroyed on faulty policy setting.
2019-01-23 06:22:42 -05:00
Andrzej Kurek
c750932f2c Adapt to the new key allocation mechanism 2019-01-23 06:22:32 -05:00
Andrzej Kurek
c0a1be08a0 Fix indentation of documentation 2019-01-15 03:33:35 -05:00
Andrzej Kurek
a62a58ece5 cipher: fixed key ownership scope
Indicate key ownership earlier, so that it gets destroyed on faulty policy setting.
2019-01-14 05:01:28 -05:00
Andrzej Kurek
2349c4db88 Adapt to the new key allocation mechanism 2019-01-08 09:36:01 -05:00
k-stachowiak
516897a44a Remove unnecessary parameter validation from the Cipher module 2018-12-19 17:34:58 +01:00
k-stachowiak
1a9df6bcb7 Improve style in the Cipher module 2018-12-19 17:34:58 +01:00
k-stachowiak
95070a8286 Make some cipher parameter validation unconditional 2018-12-19 17:34:58 +01:00
k-stachowiak
c29d94c7bf Account for optional NULL buffer arguments in the Cipher module 2018-12-19 17:34:13 +01:00
k-stachowiak
a539070f82 Make all parameter validation tests optional 2018-12-19 17:34:13 +01:00
Krzysztof Stachowiak
e0215d7869 Add Cipher module parameter validation 2018-12-19 17:34:13 +01:00
Hanno Becker
7b05629641 Return 'Feature unavailable' error for ciphers unsupported by PSA 2018-11-22 16:33:01 +00:00
Hanno Becker
1908655231 Use enum for slot state in PSA-based cipher context 2018-11-22 16:33:01 +00:00
Hanno Becker
4ee7e76378 Check support for cipher in mbedtls_cipher_setup_psa()
mbedtls_cipher_setup_psa() should return
MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE when the requested
cipher is not supported by PSA, so that the caller can
try the original mbedtls_cipher_setup() instead.

The previous version of mbedtls_cipher_setup_psa(), however,
only attempted to translate the cipher mode (GCM, CCM, CBC,
ChaChaPoly, Stream), but didn't consider the underlying
cipher primitive. Hence, it wouldn't fail when attempting
to setup a cipher context for, say, 3DES-CBC, where CBC
is currently supported by PSA but 3DES isn't.

This commit adds a check to mbedtls_cipher_setup_psa()
for whether the requested cipher primitive is available
in the underlying PSA Crypto implementation, and fails
cleanly with MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE if
it is isn't.
2018-11-22 16:33:01 +00:00
Hanno Becker
fe73adee5a Implement PSA-based AEAD enc/dec cipher operations 2018-11-22 16:33:01 +00:00
Hanno Becker
20120b373e Add AEAD tag length to new mbedtls_cipher_setup_psa()
For AEAD ciphers, the information contained in mbedtls_cipher_info
is not enough to deduce a PSA algorithm value of type psa_algorithm_t.
This is because mbedtls_cipher_info doesn't contain the AEAD tag
length, while values of type psa_algorithm_t do.

This commit adds the AEAD tag length as a separate parameter
to mbedtls_cipher_setup_psa(). For Non-AEAD ciphers, the value
must be 0.

This approach is preferred over passing psa_algorithm_t directly
in order to keep the changes in existing code using the cipher layer
small.
2018-11-22 16:33:01 +00:00
Hanno Becker
a395d8f1e9 Always configure PSA-based keys for encryption and decryption
Mbed TLS cipher layer allows usage of keys for other purposes
than indicated in the `operation` parameter of `mbedtls_cipher_setkey()`.
The semantics of the PSA Crypto API, in contrast, checks key
usage against the key policy.

As a remedy, this commit modifies the PSA key slot setup to
always allow both encryption and decryption.
2018-11-22 16:33:01 +00:00
Hanno Becker
55e2e3d5cc Implement PSA-based version of mbedtls_cipher_crypt() 2018-11-22 16:33:01 +00:00
Hanno Becker
edda8b8830 Implement mbedtls_cipher_setkey() for PSA-based cipher contexts
This commit implements the internal key slot management performed
by PSA-based cipher contexts. Specifically, `mbedtls_cipher_setkey()`
wraps the provided raw key material into a key slot, and
`mbedtls_cipher_free()` destroys that key slot.
2018-11-22 16:33:01 +00:00
Hanno Becker
6118e43d15 Add PSA-specific cipher context 2018-11-22 16:33:01 +00:00
Hanno Becker
ce1ddee13a Add psa_enabled field to cipher ctx and add dummy implementations
This field determines whether a cipher context should
use an external implementation of the PSA Crypto API for
cryptographic operations, or Mbed TLS' own crypto library.

The commit also adds dummy implementations for the cipher API.
2018-11-22 16:33:01 +00:00
Hanno Becker
4ccfc40aef Add declaration and dummy-definition of mbedtls_cipher_setup_psa() 2018-11-22 16:33:01 +00:00
Hanno Becker
18597cd3c4 Fix style in cipher.c 2018-11-22 16:33:01 +00:00
Hanno Becker
a654c3e38a Return 'Feature unavailable' error for ciphers unsupported by PSA 2018-11-22 14:03:39 +00:00
Hanno Becker
ce61a32e6a Use enum for slot state in PSA-based cipher context 2018-11-22 14:03:39 +00:00
Hanno Becker
8d88a6e20d Check support for cipher in mbedtls_cipher_setup_psa()
mbedtls_cipher_setup_psa() should return
MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE when the requested
cipher is not supported by PSA, so that the caller can
try the original mbedtls_cipher_setup() instead.

The previous version of mbedtls_cipher_setup_psa(), however,
only attempted to translate the cipher mode (GCM, CCM, CBC,
ChaChaPoly, Stream), but didn't consider the underlying
cipher primitive. Hence, it wouldn't fail when attempting
to setup a cipher context for, say, 3DES-CBC, where CBC
is currently supported by PSA but 3DES isn't.

This commit adds a check to mbedtls_cipher_setup_psa()
for whether the requested cipher primitive is available
in the underlying PSA Crypto implementation, and fails
cleanly with MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE if
it is isn't.
2018-11-22 14:03:39 +00:00
Hanno Becker
56150afd1a Implement PSA-based AEAD enc/dec cipher operations 2018-11-22 14:03:39 +00:00
Hanno Becker
f133640475 Add AEAD tag length to new mbedtls_cipher_setup_psa()
For AEAD ciphers, the information contained in mbedtls_cipher_info
is not enough to deduce a PSA algorithm value of type psa_algorithm_t.
This is because mbedtls_cipher_info doesn't contain the AEAD tag
length, while values of type psa_algorithm_t do.

This commit adds the AEAD tag length as a separate parameter
to mbedtls_cipher_setup_psa(). For Non-AEAD ciphers, the value
must be 0.

This approach is preferred over passing psa_algorithm_t directly
in order to keep the changes in existing code using the cipher layer
small.
2018-11-22 14:03:39 +00:00
Hanno Becker
884f6af590 Always configure PSA-based keys for encryption and decryption
Mbed TLS cipher layer allows usage of keys for other purposes
than indicated in the `operation` parameter of `mbedtls_cipher_setkey()`.
The semantics of the PSA Crypto API, in contrast, checks key
usage against the key policy.

As a remedy, this commit modifies the PSA key slot setup to
always allow both encryption and decryption.
2018-11-22 14:03:39 +00:00
Hanno Becker
3c852a9c35 Implement PSA-based version of mbedtls_cipher_crypt() 2018-11-22 14:03:39 +00:00
Hanno Becker
d9ca5cfd60 Implement mbedtls_cipher_setkey() for PSA-based cipher contexts
This commit implements the internal key slot management performed
by PSA-based cipher contexts. Specifically, `mbedtls_cipher_setkey()`
wraps the provided raw key material into a key slot, and
`mbedtls_cipher_free()` destroys that key slot.
2018-11-22 14:03:39 +00:00
Hanno Becker
73f59fc3e9 Add PSA-specific cipher context 2018-11-22 14:03:39 +00:00
Hanno Becker
1cb36530be Add psa_enabled field to cipher ctx and add dummy implementations
This field determines whether a cipher context should
use an external implementation of the PSA Crypto API for
cryptographic operations, or Mbed TLS' own crypto library.

The commit also adds dummy implementations for the cipher API.
2018-11-22 14:03:39 +00:00
Hanno Becker
098c9de2af Add declaration and dummy-definition of mbedtls_cipher_setup_psa() 2018-11-22 14:03:39 +00:00
Hanno Becker
21967c5bff Fix style in cipher.c 2018-11-22 14:03:39 +00:00
Ron Eldor
bb4bbbbbb4 Resolve PR review comments
Address review comments:
1. add `mbedtls_cipher_init()` after freeing context, in test code
2. style comments
3. set `ctx->iv_size = 0` in case `IV == NULL && iv_len == 0`
2018-07-23 18:18:35 +01:00
Ron Eldor
4e64e0b922 Fix after PR comments
1. Don't set IV onECB
2. Fix style issues
3. reduce number of tests
2018-07-23 18:18:32 +01:00
Ron Eldor
7b01244b99 Add tests for mbedtls_cipher_crypt API
1. Add tests for 'mbedtls_cipher_crypt()' API
2. Resolves #1091, by ignoring IV when the cipher mode is MBEDTLS_MODE_ECB
2018-07-23 18:02:09 +01:00
Ron Eldor
ab8d58cb2d Move definition of MBEDTLS_CIPHER_MODE_STREAM
Move definition of `MBEDTLS_CIPHER_MODE_STREAM` to header file
(`mbedtls_cipher_internal.h`), because it is used by more than
one file. Raised by TrinityTonic in #1719
2018-07-01 10:20:43 +03:00
Manuel Pégourié-Gonnard
0dadba2b58 Merge branch 'development' into iotssl-2257-chacha-poly-primitives
* development: (182 commits)
  Change the library version to 2.11.0
  Fix version in ChangeLog for fix for #552
  Add ChangeLog entry for clang version fix. Issue #1072
  Compilation warning fixes on 32b platfrom with IAR
  Revert "Turn on MBEDTLS_SSL_ASYNC_PRIVATE by default"
  Fix for missing len var when XTS config'd and CTR not
  ssl_server2: handle mbedtls_x509_dn_gets failure
  Fix harmless use of uninitialized memory in ssl_parse_encrypted_pms
  SSL async tests: add a few test cases for error in decrypt
  Fix memory leak in ssl_server2 with SNI + async callback
  SNI + SSL async callback: make all keys async
  ssl_async_resume: free the operation context on error
  ssl_server2: get op_name from context in ssl_async_resume as well
  Clarify "as directed here" in SSL async callback documentation
  SSL async callbacks documentation: clarify resource cleanup
  Async callback: use mbedtls_pk_check_pair to compare keys
  Rename mbedtls_ssl_async_{get,set}_data for clarity
  Fix copypasta in the async callback documentation
  SSL async callback: cert is not always from mbedtls_ssl_conf_own_cert
  ssl_async_set_key: detect if ctx->slots overflows
  ...
2018-06-19 11:13:50 +02:00
Jaeden Amero
c653990ed5 cipher: Add wrappers for AES-XTS
AES-XTS does not support multipart use as it can only operate on an entire
sector at a time.
2018-06-13 12:13:56 +01:00
Simon Butcher
8c0fd1e881 Add cipher abstraction and test cases for OFB block mode
Adds OFB as additional block mode in the cipher abstraction, and additional
test cases for that block mode.
2018-06-11 14:03:22 +01:00
Manuel Pégourié-Gonnard
3dc62a0a9b chachapoly: force correct mode for integrated API
Allowing DECRYPT with crypt_and_tag is a risk as people might fail to check
the tag correctly (or at all). So force them to use auth_decrypt() instead.

See also https://github.com/ARMmbed/mbedtls/pull/1668
2018-06-04 12:18:19 +02:00
Manuel Pégourié-Gonnard
32902e6eae cipher: handle ChaCha20 as a stream cipher
That's what it is. So we shouldn't set a block size != 1.

While at it, move call to chachapoly_update() closer to the one for GCM, as
they are similar (AEAD).
2018-05-24 13:37:31 +02:00
Manuel Pégourié-Gonnard
5ef92d309a chachapoly: adjust parameter order
This module used (len, pointer) while (pointer, len) is more common in the
rest of the library, in particular it's what's used in the GCM API that
very comparable to it, so switch to (pointer, len) for consistency.

Note that the crypt_and_tag() and auth_decrypt() functions were already using
the same convention as GCM, so this also increases intra-module consistency.
2018-05-24 13:37:31 +02:00
Manuel Pégourié-Gonnard
fe725defae cipher: use new functions from chachapoly 2018-05-24 13:37:31 +02:00
Manuel Pégourié-Gonnard
dca3a5d884 Rename aead_chacha20_poly1305 to chachapoly
While the old name is explicit and aligned with the RFC, it's also very long,
so with the mbedtls_ prefix prepended we get a 31-char prefix to each
identifier, which quickly conflicts with our 80-column policy.

The new name is shorter, it's what a lot of people use when speaking about
that construction anyway, and hopefully should not introduce confusion at
it seems unlikely that variants other than 20/1305 be standardised in the
foreseeable future.
2018-05-24 13:37:31 +02:00