Commit Graph

146 Commits

Author SHA1 Message Date
Hanno Becker
7132c4a6c8 Update version_features.c 2019-08-06 11:25:45 +03:00
Jaeden Amero
fd0f65459c Merge remote-tracking branch 'origin/pr/2697' into development
* origin/pr/2697:
  Update crypto submodule
  Add all.sh component that exercises invalid_param checks
  Remove mbedtls_param_failed from programs
  Make it easier to define MBEDTLS_PARAM_FAILED as assert
  Make test suites compatible with #include <assert.h>
  Pass -m32 to the linker as well
  Don't systematically rebuild programs
2019-06-21 13:21:05 +01:00
Gilles Peskine
c7ad122f51 Make it easier to define MBEDTLS_PARAM_FAILED as assert
Introduce a new configuration option MBEDTLS_CHECK_PARAMS_ASSERT,
which is disabled by default. When this option is enabled,
MBEDTLS_PARAM_FAILED defaults to assert rather than to a call to
mbedtls_param_failed, and <assert.h> is included.

This fixes #2671 (no easy way to make MBEDTLS_PARAM_FAILED assert)
without breaking backward compatibility. With this change,
`config.pl full` runs tests with MBEDTLS_PARAM_FAILED set to assert,
so the tests will fail if a validation check fails, and programs don't
need to provide their own definition of mbedtls_param_failed().
2019-06-13 16:51:59 +02:00
Máté Varga
c5de4623e8 Making version features easily ROM-able when using Arm C compiler. 2019-06-12 12:26:37 +02:00
Hanno Becker
a0e20d04b2 Rename MBEDTLS_SSL_CID to MBEDTLS_SSL_DTLS_CONNECTION_ID
Files modified via

sed -i 's/MBEDTLS_SSL_CID\([^_]\|$\)/MBEDTLS_SSL_DTLS_CONNECTION_ID\1/g' **/*.c **/*.h **/*.sh **/*.function
2019-06-03 16:07:50 +01:00
Hanno Becker
f8c10269d1 Update version_features.c 2019-06-03 14:42:08 +01:00
Jaeden Amero
ff34d43720 Merge remote-tracking branch 'origin/pr/2532' into development
* origin/pr/2532: (29 commits)
  Document and test flags in x509_verify
  Fix style issues and a typo
  Fix name to function call
  Address comments for x509 tests
  Address review comments regarding ssl_client2 and ssl tests
  Remove mbedtls_ from the static function name
  Change docs according to review comments
  Change the verify function naming
  Fix ssl_client2 and ssl_server2 if !PLATFORM_C
  Correct placement of usage macro in ssl_client2
  Update version_features.c
  Remove trailing whitespace in test_suite_x509parse.function
  Update query_config.c
  Add ssl-opt.sh tests for trusted CA callbacks
  Only run X.509 CRT verification tests with CA callback tests if !CRL
  Minor fixes to CA callback tests
  Declare CA callback type even if feature is disabled
  Implement X.509 CRT verification using CA callback
  Add prototype for CRT verification with static and dynamic CA list
  Make use of CA callback if present when verifying peer CRT chain
  ...
2019-04-16 14:42:11 +01:00
Hanno Becker
fed5d9d1e9 Update version_features.c 2019-03-28 17:07:12 +00:00
Jaeden Amero
0ea33776ce Merge remote-tracking branch 'restricted/pr/552' into development
Ensure this merge passes tests by auto-generating query_config.c, adding
MBEDTLS_ECDH_LEGACY_CONTEXT to it.

* restricted/pr/552:
  Fix mbedtls_ecdh_get_params with new ECDH context
  Test undefining MBEDTLS_ECDH_LEGACY_CONTEXT in all.sh
  Define MBEDTLS_ECDH_LEGACY_CONTEXT in config.h
  Add changelog entry for mbedtls_ecdh_get_params robustness
  Fix ecdh_get_params with mismatching group
  Add test case for ecdh_get_params with mismatching group
  Add test case for ecdh_calc_secret
  Fix typo in documentation
2019-03-27 17:01:16 +00:00
Jaeden Amero
57f4d9e4fe Update crypto submodule to test with private headers
Update the crypto submodule to the top of the Mbed Crypto development
branch. This brings in a version of Mbed Crypto that enables building
Mbed Crypto tests that depend on private headers, like
'psa_crypto_invasive.h'.

This also requires updating our config.h to include new configuration
options added to Mbed Crypto. MBEDTLS_PSA_ITS_FILE_C replaces
MBEDTLS_PSA_CRYPTO_STORAGE_FILE_C and MBEDTLS_PSA_CRYPTO_STORAGE_ITS_C.
MBEDTLS_PSA_INJECT_ENTROPY replaces MBEDTLS_PSA_HAS_ITS_IO.
2019-03-19 15:45:09 +00:00
Simon Butcher
535ee4a35b Merge remote-tracking branch 'public/pr/2421' into development
* public/pr/2421: (68 commits)
  Fix unused variable warning in ssl_parse_certificate_coordinate()
  Add missing compile time guard in ssl_client2
  Update programs/ssl/query_config.c
  ssl_client2: Reset peer CRT info string on reconnect
  Add further debug statements on assertion failures
  Fix typo in documentation of ssl_parse_certificate_chain()
  Add debug output in case of assertion failure
  Fix typo in SSL ticket documentation
  Add config sanity check for !MBEDTLS_SSL_KEEP_PEER_CERTIFICATE
  ssl_client2: Zeroize peer CRT info buffer when reconnecting
  Reintroduce numerous ssl-opt.sh tests if !MBEDTLS_SSL_KEEP_PEER_CERT
  ssl_client2: Extract peer CRT info from verification callback
  Improve documentation of mbedtls_ssl_get_peer_cert()
  Improve documentation of MBEDTLS_SSL_KEEP_PEER_CERTIFICATE
  Fix indentation of Doxygen comment in ssl_internal.h
  Set peer CRT length only after successful allocation
  Remove question in comment about verify flags on cli vs. server
  Remove misleading and redundant guard around restartable ECC field
  Add test for !MBEDTLS_SSL_KEEP_PEER_CERTIFICATE to all.sh
  Free peer CRT chain immediately after verifying it
  ...
2019-03-01 12:46:07 +00:00
Andres Amaya Garcia
4a512281ec Reduce priority of 3DES ciphersuites 2019-03-01 10:19:27 +01:00
Hanno Becker
8d84fd83ff Update version_features.c 2019-02-26 14:38:09 +00:00
Gilles Peskine
43f564f29d Define MBEDTLS_ECDH_LEGACY_CONTEXT in config.h
Define MBEDTLS_ECDH_LEGACY_CONTEXT in config.h instead of hard-coding
this in ecdh.h so that its absence can be tested. Document it as
experimental so that we reserve the right to change it in the future.
2019-02-22 13:04:20 +01:00
Andrzej Kurek
3c2b15d31e Update version_features file 2019-02-08 02:38:45 -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
Jaeden Amero
dac9f45e5a Merge remote-tracking branch 'origin/pr/1551' into development 2019-01-30 13:24:55 +00:00
Manuel Pégourié-Gonnard
e451be5d04 Update version_features.c 2018-12-11 12:28:56 +01:00
Manuel Pégourié-Gonnard
aeefa49edd Add config option for X.509/TLS to use PSA 2018-11-21 21:03:14 +00:00
Jaeden Amero
484ee33c35 psa: Add PSA Crypto configuration
Add an option that can enable the exposure of PSA Crypto APIs from
libmbedcrypto.
2018-11-21 12:54:57 +00:00
Manuel Pégourié-Gonnard
125af948c3 Merge branch 'development-restricted' into iotssl-1260-non-blocking-ecc-restricted
* development-restricted: (578 commits)
  Update library version number to 2.13.1
  Don't define _POSIX_C_SOURCE in header file
  Don't declare and define gmtime()-mutex on Windows platforms
  Correct preprocessor guards determining use of gmtime()
  Correct documentation of mbedtls_platform_gmtime_r()
  Correct typo in documentation of mbedtls_platform_gmtime_r()
  Correct POSIX version check to determine presence of gmtime_r()
  Improve documentation of mbedtls_platform_gmtime_r()
  platform_utils.{c/h} -> platform_util.{c/h}
  Don't include platform_time.h if !MBEDTLS_HAVE_TIME
  Improve wording of documentation of MBEDTLS_PLATFORM_GMTIME_R_ALT
  Fix typo in documentation of MBEDTLS_PLATFORM_GMTIME_R_ALT
  Replace 'thread safe' by 'thread-safe' in the documentation
  Improve documentation of MBEDTLS_HAVE_TIME_DATE
  ChangeLog: Add missing renamings gmtime -> gmtime_r
  Improve documentation of MBEDTLS_HAVE_TIME_DATE
  Minor documentation improvements
  Style: Add missing period in documentation in threading.h
  Rename mbedtls_platform_gmtime() to mbedtls_platform_gmtime_r()
  Guard decl and use of gmtime mutex by HAVE_TIME_DATE and !GMTIME_ALT
  ...
2018-09-11 12:39:14 +02:00
Ron Eldor
466a57fbbe Key wrapping API definition
Define the Key Wrapping API
2018-07-24 16:43:20 +01:00
k-stachowiak
723f8674c4 Provide cross platform vsnprintf wrapper 2018-07-16 14:27:07 +02:00
Manuel Pégourié-Gonnard
79d9b50421 Merge branch 'development' into iotssl-1260-non-blocking-ecc-restricted
* development: (180 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
  ...
2018-06-20 09:46:17 +02:00
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
Simon Butcher
2dbecc04cc Merge remote-tracking branch 'public/pr/1602' into development 2018-06-15 20:15:00 +01:00
Simon Butcher
5f57f1e3cc Merge remote-tracking branch 'public/pr/1270' into development 2018-06-15 14:17:31 +01:00
Jaeden Amero
ff2f493432 config: List cipher modes in alphabetical order
Keeping the cipher modes list in alphabetical order makes it easier to
find things. Move OFB and XTS to their appropriate locations in the
list.
2018-06-14 11:42:27 +01:00
Jaeden Amero
e9ecf00007 aes: Remove AES-XEX
AES-XEX is a building block for other cryptographic standards and not yet a
standard in and of itself. We'll just provide the standardized AES-XTS
algorithm, and not AES-XEX. The AES-XTS algorithm and interface provided
can be used to perform the AES-XEX algorithm when the length of the input
is a multiple of the AES block size.
2018-06-13 12:03:29 +01:00
Aorimn
5f77801ac3 Implement AES-XTS mode
XTS mode is fully known as "xor-encrypt-xor with ciphertext-stealing".
This is the generalization of the XEX mode.
This implementation is limited to an 8-bits (1 byte) boundary, which
doesn't seem to be what was thought considering some test vectors [1].

This commit comes with tests, extracted from [1], and benchmarks.
Although, benchmarks aren't really nice here, as they work with a buffer
of a multiple of 16 bytes, which isn't a challenge for XTS compared to
XEX.

[1] http://csrc.nist.gov/groups/STM/cavp/documents/aes/XTSTestVectors.zip
2018-06-13 12:03:27 +01:00
Aorimn
8bb817a4c1 Add AES-XEX to the version features 2018-06-13 12:02:29 +01:00
Manuel Pégourié-Gonnard
da19f4c79f Merge branch 'development' into iotssl-1260-non-blocking-ecc-restricted
Summary of merge conflicts:

include/mbedtls/ecdh.h -> documentation style
include/mbedtls/ecdsa.h -> documentation style
include/mbedtls/ecp.h -> alt style, new error codes, documentation style
include/mbedtls/error.h -> new error codes
library/error.c -> new error codes (generated anyway)
library/ecp.c:
    - code of an extracted function was changed
library/ssl_cli.c:
    - code addition on one side near code change on the other side
      (ciphersuite validation)
library/x509_crt.c -> various things
    - top fo file: helper structure added near old zeroize removed
    - documentation of find_parent_in()'s signature: improved on one side,
      added arguments on the other side
    - documentation of find_parent()'s signature: same as above
    - verify_chain(): variables initialised later to give compiler an
      opportunity to warn us if not initialised on a code path
    - find_parent(): funcion structure completely changed, for some reason git
      tried to insert a paragraph of the old structure...
    - merge_flags_with_cb(): data structure changed, one line was fixed with a
      cast to keep MSVC happy, this cast is already in the new version
    - in verify_restratable(): adjacent independent changes (function
      signature on one line, variable type on the next)
programs/ssl/ssl_client2.c:
    - testing for IN_PROGRESS return code near idle() (event-driven):
      don't wait for data in the the socket if ECP_IN_PROGRESS
tests/data_files/Makefile: adjacent independent additions
tests/suites/test_suite_ecdsa.data: adjacent independent additions
tests/suites/test_suite_x509parse.data: adjacent independent additions

* development: (1059 commits)
  Change symlink to hardlink to avoid permission issues
  Fix out-of-tree testing symlinks on Windows
  Updated version number to 2.10.0 for release
  Add a disabled CMAC define in the no-entropy configuration
  Adapt the ARIA test cases for new ECB function
  Fix file permissions for ssl.h
  Add ChangeLog entry for PR#1651
  Fix MicroBlaze register typo.
  Fix typo in doc and copy missing warning
  Fix edit mistake in cipher_wrap.c
  Update CTR doc for the 64-bit block cipher
  Update CTR doc for other 128-bit block ciphers
  Slightly tune ARIA CTR documentation
  Remove double declaration of mbedtls_ssl_list_ciphersuites
  Update CTR documentation
  Use zeroize function from new platform_util
  Move to new header style for ALT implementations
  Add ifdef for selftest in header file
  Fix typo in comments
  Use more appropriate type for local variable
  ...
2018-06-13 09:52:54 +02:00
Simon Butcher
e47d6fd97e Merge remote-tracking branch 'public/pr/1497' into development 2018-06-12 16:53:04 +01:00
Simon Butcher
76a5b22973 Add OFB block mode to AES-128/192/256
Adds a new configuration of MBEDTLS_CIPHER_MODE_OFB and OFB mode to AES.
2018-06-11 14:03:22 +01:00
Thomas Fossati
656864b360 Add an HKDF (RFC 5869) implementation 2018-06-11 13:10:14 +01:00
Manuel Pégourié-Gonnard
39b1904b9f Merge branch 'development' into iotssl-2257-chacha-poly-primitives
* development: (97 commits)
  Updated version number to 2.10.0 for release
  Add a disabled CMAC define in the no-entropy configuration
  Adapt the ARIA test cases for new ECB function
  Fix file permissions for ssl.h
  Add ChangeLog entry for PR#1651
  Fix MicroBlaze register typo.
  Fix typo in doc and copy missing warning
  Fix edit mistake in cipher_wrap.c
  Update CTR doc for the 64-bit block cipher
  Update CTR doc for other 128-bit block ciphers
  Slightly tune ARIA CTR documentation
  Remove double declaration of mbedtls_ssl_list_ciphersuites
  Update CTR documentation
  Use zeroize function from new platform_util
  Move to new header style for ALT implementations
  Add ifdef for selftest in header file
  Fix typo in comments
  Use more appropriate type for local variable
  Remove useless parameter from function
  Wipe sensitive info from the stack
  ...
2018-06-07 12:02:55 +02:00
Manuel Pégourié-Gonnard
2adb375c50 Add option to avoid 64-bit multiplication
Motivation is similar to NO_UDBL_DIVISION.

The alternative implementation of 64-bit mult is straightforward and aims at
obvious correctness. Also, visual examination of the generate assembly show
that it's quite efficient with clang, armcc5 and arm-clang. However current
GCC generates fairly inefficient code for it.

I tried to rework the code in order to make GCC generate more efficient code.
Unfortunately the only way to do that is to get rid of 64-bit add and handle
the carry manually, but this causes other compilers to generate less efficient
code with branches, which is not acceptable from a side-channel point of view.

So let's keep the obvious code that works for most compilers and hope future
versions of GCC learn to manage registers in a sensible way in that context.

See https://bugs.launchpad.net/gcc-arm-embedded/+bug/1775263
2018-06-07 11:05:33 +02:00
Manuel Pégourié-Gonnard
94175a50f7 Refresh generated file 2018-06-04 12:42:17 +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
Daniel King
8fe4701abe Add ChaCha20+Poly1305 to the Cipher module 2018-05-24 13:37:31 +02:00
Daniel King
b8025c5826 Implement AEAD-ChaCha20-Poly1305.
This implementation is based off the description in RFC 7539.

The ChaCha20 code is also updated to provide a means of generating
keystream blocks with arbitrary counter values. This is used to
generated the one-time Poly1305 key in the AEAD construction.
2018-05-24 13:37:31 +02:00
Daniel King
adc32c0b50 Add Poly1305 authenticator algorithm (RFC 7539)
Test vectors are included from RFC 7539.

Poly1305 is also added to the benchmark program.
2018-05-24 13:37:31 +02:00
Daniel King
34b822ce7b Initial implementation of ChaCha20 2018-05-24 13:37:31 +02:00
Manuel Pégourié-Gonnard
a3712beb9b Merge branch 'development' into iotssl-1941-aria-ciphersuites
* development: (504 commits)
  Fix minor code style issues
  Add the uodate to the soversion to the ChangeLog
  Fix the ChangeLog for clarity, english and credit
  Update version to 2.9.0
  ecp: Fix binary compatibility with group ID
  Changelog entry
  Change accepted ciphersuite versions when parsing server hello
  Remove preprocessor directives around platform_util.h include
  Fix style for mbedtls_mpi_zeroize()
  Improve mbedtls_platform_zeroize() docs
  mbedtls_zeroize -> mbedtls_platform_zeroize in docs
  Reword config.h docs for MBEDTLS_PLATFORM_ZEROIZE_ALT
  Organize CMakeLists targets in alphabetical order
  Organize output objs in alfabetical order in Makefile
  Regenerate errors after ecp.h updates
  Update ecp.h
  Change variable bytes_written to header_bytes in record decompression
  Update ecp.h
  Update ecp.h
  Update ecp.h
  ...
2018-05-22 15:58:50 +02:00
Gilles Peskine
b74a1c73b1 Rename MBEDTLS_SSL_ASYNC_PRIVATE_C to MBEDTLS_SSL_ASYNC_PRIVATE
This is an optional feature, not a module of its own, so don't call it
MBEDTLS_xxx_C and put it in the appropriate section of config.h.
2018-04-26 10:00:39 +02:00
Gilles Peskine
b44692f126 Merge branch 'mbedtls_ssl_get_key_exchange_md_ssl_tls-return_hashlen' into tls_async_server-2.9
Conflict resolution:
* ChangeLog: put the new entry from my branch in the proper place.
* include/mbedtls/error.h: counted high-level module error codes again.
* include/mbedtls/ssl.h: picked different numeric codes for the
  concurrently added errors; made the new error a full sentence per
  current standards.
* library/error.c: ran scripts/generate_errors.pl.
* library/ssl_srv.c:
    * ssl_prepare_server_key_exchange "DHE key exchanges": the conflict
      was due to style corrections in development
      (4cb1f4d49c) which I merged with
      my refactoring.
    * ssl_prepare_server_key_exchange "For key exchanges involving the
      server signing", first case, variable declarations: merged line
      by line:
        * dig_signed_len: added in async
        * signature_len: removed in async
        * hashlen: type changed to size_t in development
        * hash: size changed to MBEDTLS_MD_MAX_SIZE in async
        * ret: added in async
    * ssl_prepare_server_key_exchange "For key exchanges involving the
      server signing", first cae comment: the conflict was due to style
      corrections in development (4cb1f4d49c)
      which I merged with my comment changes made as part of refactoring
      the function.
    * ssl_prepare_server_key_exchange "Compute the hash to be signed" if
      `md_alg != MBEDTLS_MD_NONE`: conflict between
      ebd652fe2d
      "ssl_write_server_key_exchange: calculate hashlen explicitly" and
      46f5a3e9b4 "Check return codes from
      MD in ssl code". I took the code from commit
      ca1d742904 made on top of development
      which makes mbedtls_ssl_get_key_exchange_md_ssl_tls return the
      hash length.
* programs/ssl/ssl_server2.c: multiple conflicts between the introduction
  of MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS and new auxiliary functions and
  definitions for async support, and the introduction of idle().
    * definitions before main: concurrent additions, kept both.
    * main, just after `handshake:`: in the loop around
      mbedtls_ssl_handshake(), merge the addition of support for
      MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS and SSL_ASYNC_INJECT_ERROR_CANCEL
      with the addition of the idle() call.
    * main, if `opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM`: take the
      code from development and add a check for
      MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS.
    * main, loop around mbedtls_ssl_read() in the datagram case:
      take the code from development and add a check for
      MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS; revert to a do...while loop.
    * main, loop around mbedtls_ssl_write() in the datagram case:
      take the code from development and add a check for
      MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS; revert to a do...while loop.
2018-04-26 10:00:27 +02:00
Gilles Peskine
8bf79f6dc6 SSL asynchronous private key operation callbacks: interface
New compile-time option MBEDTLS_SSL_ASYNC_PRIVATE_C, enabling
callbacks to replace private key operations. These callbacks allow the
SSL stack to make an asynchronous call to an external cryptographic
module instead of calling the cryptography layer inside the library.
The call is asynchronous in that it may return the new status code
MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS, in which case the SSL stack returns
and can be later called where it left off.

This commit introduces the configuration option. Later commits will
implement the feature proper.
2018-04-24 09:32:28 +02:00
Nicholas Wilson
08f3ef1861 Basic support for Curve448, similar to the current level of support for Curve25519 2018-03-29 14:29:06 +01:00
Jaeden Amero
8645e90825 Merge remote-tracking branch 'upstream-restricted/pr/363' into development-proposed 2018-03-28 11:54:28 +01:00