Commit Graph

529 Commits

Author SHA1 Message Date
Andrzej Kurek
478b05c34c
Merge pull request #3355 from AndrzejKurek/fi_error_codes
Change the default value of status variables to an error
2020-06-08 08:57:33 +01:00
Andrzej Kurek
fd56f409b3
Change the default value of status variables to an error
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
2020-06-05 12:26:07 -04:00
Andrzej Kurek
825ebd483f
Merge mbedtls 2.16.6 into baremetal
Conflicts:
mbedtls.doxyfile - PROJECT_NAME - mbed TLS v2.16.6 chosen.
doc_mainpage.h - mbed TLS v2.16.6 version chosen.
hmac_drbg.h - line 260, extended description chosen.
            - line 313, extended description chosen.
            - line 338, extended description chosen.
version.h - 2.16.6 chosen.
CMakeLists.txt - 2.16.6 chosen.
test_suite_version.data - 2.16.6 chosen.
Makefile - 141 - manual correction - baremetal version of C_SOURCE_FILES
                 with variables for directories plus 2.16.6 CTAGS addition.
pkparse.c - lines 846 onwards - the asn1_get_nonzero_mpi implementation chosen.
ssl_tls.c - line 5269 - edited manually, left the ret=0, because baremetal has
            a different behaviour since commit 87b5626, but added a debug
            message that's new in 2.16.6.    
all.sh:
- component_build_deprecated - chosen the refactored version from 2.16.6,
                               but with extra flags from baremetal.
- rest of the _no_xxx tests - merged make options to have PTHREAD=1 and
                              other changes from 2.16.6 (like -O1 instead of -O0).
- component_build_arm_none_eabi_gcc_no_64bit_multiplication - added 
                              TINYCRYPT_BUILD=0 to the 2.16.6 version of make.

x509/req_app.c - left baremetal log but with mbedtls_exit( 0 ) call.
x509/crl_app.c - left baremetal log but with mbedtls_exit( 0 ) call.
x509/cert_app.c - left baremetal log but with mbedtls_exit( 0 ) call.
ssl/ssl_mail_client.c - left baremetal log but with mbedtls_exit( 0 ) call.
ssl/ssl_pthread_server.c - left baremetal log but with mbedtls_exit( 0 ) call.
ssl/ssl_fork_server.c - left baremetal log but with mbedtls_exit( 0 ) call.
ssl_client1.c - line 54 - left baremetal log but with mbedtls_exit( 0 ) call.
ssl_client2.c - line 54 - left baremetal log but with mbedtls_exit( 0 ) call.
              - line 132 - new options of both branches added.
              - skip close notify handled as in 2.16.6, but with `ssl` instead of `&ssl`.
              - Merged the 2.16.6 usage split with additional baremetal usages.
              - Merged options from baremetal and 2.16.6.
ssl_server.c - left baremetal log but with mbedtls_exit( 0 ) call.
ssl_server2.c - Merged the 2.16.6 usage split with additional baremetal usages.
config.pl - fixed missing defines from the documentation, removed duplicates,
            and reorganised so that the documentation and excluded list
            are ordered in the same way.
test_suite_x509parse.data - only added the two new pathlen tests.
x509_crt.c - change the return code by removing
             MBEDTLS_ERR_X509_INVALID_EXTENSIONS, since it's added by
             x509_crt_frame_parse_ext not by an "or", but by "+=".
Changelog - Assigned all entries to appropriate sections.
ssl-opt.sh - line 8263 - merged options.
           - removed lines 1165 - 1176 - there was a duplicate test, probably
             an artifact of previous merges.
check-files.py - sticked to old formatting.

Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
2020-05-18 11:47:25 -04:00
Arto Kinnunen
ac6d226939 Update signature of mbedtls_platform_random_delay
Skip parameter and return value from mbedtls_platform_random_delay
to make it more resistant for FI attacks.
2020-01-09 10:19:07 +02:00
Arto Kinnunen
7195571681 Replace mbedtls_platform_enforce_volatile_reads 2
Replace remaining mbedtls_platform_enforce_volatile_reads() with
mbedtls_platform_random_delay().
2020-01-07 10:47:58 +02:00
Jarno Lamsa
5aa4c07b85 Minor review fixes 2019-12-20 13:09:27 +02:00
Jarno Lamsa
8d09e5744c Increase hamming distance for session resume flag
This is to prevent glitching a single bit for the resume flag.
2019-12-19 17:07:35 +02:00
Jarno Lamsa
06164057b3 Check that we have all the proper keys
The proper keys should be set at the end of
the handshake, if not, fail the handshake.
2019-12-19 14:40:36 +02:00
Jarno Lamsa
e1621d4700 Check that the peer_authenticated flag
Check that the peer has been authenticated in the end
of the handshake.
2019-12-19 14:29:24 +02:00
Jarno Lamsa
67f0a1e833 Protect setting of premaster_generated flag
The flag is used for tracking if the premaster has
been succesfully generated. Note that when resuming
a session, the flag should not be used when trying to
notice if all the key generation/derivation has been done.
2019-12-19 09:43:19 +02:00
Jarno Lamsa
98801af26b Protect setting of hello_random flag
The handshake flag tells when the handshake hello.random
is set and can be used later to decide if we have the correct
keys.
2019-12-19 09:02:02 +02:00
Jarno Lamsa
6122b59042 Address review comments 2019-12-19 07:56:10 +02:00
Jarno Lamsa
46afd5d8fa Fix CI issues
Default flow assumes failure causes multiple issues with
compatibility tests when the return value is initialised
with error value in ssl_in_server_key_exchange_parse.
The function would need a significant change in structure for this.
2019-12-19 07:56:10 +02:00
Jarno Lamsa
47aab8da8a Protect return value from mbedtls_pk_verify
Use double checks and default flow assumes failure.
2019-12-19 07:56:10 +02:00
Jarno Lamsa
70abd7aadc Add enumeration for invalid state
The invalid state can be used when state-mismatch is noticed.
The invalid state should report a FI-alert upwards.
2019-12-19 07:56:10 +02:00
Jarno Lamsa
2b20516b60 Make TLS state changes explicit
This is to enable hardening the security when changing
states in state machine so that the state cannot be changed by bit flipping.
The later commit changes the enumerations so that the states have large
hamming distance in between them to prevent this kind of attack.
2019-12-19 07:56:10 +02:00
Manuel Pégourié-Gonnard
9d6a535ba1 Return and propagate UECC_FAULT_DETECTED
This commit first changes the return convention of EccPoint_mult_safer() so
that it properly reports when faults are detected. Then all functions that
call it need to be changed to (1) follow the same return convention and (2)
properly propagate UECC_FAULT_DETECTED when it occurs.

Here's the reverse call graph from EccPoint_mult_safer() to the rest of the
library (where return values are translated to the MBEDTLS_ERR_ space) and test
functions (where expected return values are asserted explicitly).

EccPoint_mult_safer()
    EccPoint_compute_public_key()
        uECC_compute_public_key()
            pkparse.c
            tests/suites/test_suite_pkparse.function
        uECC_make_key_with_d()
        uECC_make_key()
            ssl_cli.c
            ssl_srv.c
            tests/suites/test_suite_pk.function
            tests/suites/test_suite_tinycrypt.function
    uECC_shared_secret()
        ssl_tls.c
        tests/suites/test_suite_tinycrypt.function
    uECC_sign_with_k()
        uECC_sign()
            pk.c
            tests/suites/test_suite_tinycrypt.function

Note: in uECC_sign_with_k() a test for uECC_vli_isZero(p) is suppressed
because it is redundant with a more thorough test (point validity) done at the
end of EccPoint_mult_safer(). This redundancy was introduced in a previous
commit but not noticed earlier.
2019-11-26 12:54:06 +01:00
Manuel Pégourié-Gonnard
1a5337179f Remove curve parameter from public functions 2019-11-26 12:54:06 +01:00
Manuel Pégourié-Gonnard
677b7f6c42 Fix direct use of struct instead of abstract type 2019-11-26 12:54:06 +01:00
Teppo Järvelin
6f4e030166 Changed mbedtls_platform_memcpy to memcpy in places which don't handle critical data
and under baremetal define
2019-10-30 14:07:04 +02:00
Teppo Järvelin
91d7938761 Changed every memcpy to SCA equivalent mbedtls_platform_memcpy
This makes physical attacks more difficult.
2019-10-30 14:07:04 +02:00
Teppo Järvelin
707ceb88f0 Replaced mbedtls_ssl_safer_memcmp with mbedtls_platform_memcmp
Saves some bytes and mbedtls_platform_memcmp is a bit safer for side channel
attacks.
2019-10-04 08:52:00 +03:00
Teppo Järvelin
61f412eb58 Changed every memcmp to SCA equivalent mbedtls_platform_memcmp
This makes physical attacks more difficult.
Selftest memcmp functions were not changed.
2019-10-03 13:14:33 +03:00
Manuel Pégourié-Gonnard
2829bbf59b Remove dependency from SSL on PK internals
So far, with MBEDTLS_SSL_KEEP_PEER_CERTIFICATE disabled, the SSL module relied
on a undocumented feature of the PK module: that you can distinguish between
contexts that have been setup and context that haven't. This feature is going
to go away in the case of PK_SINGLE_TYPE, as we'll soon (as in: the next
commit does that) no longer be storing the (now two-valued) pk_info member.

Note even with this change, we could still distinguish if the context has been
set up by look if pk_ctx is NULL or not, but this is also going away in the
near future (a few more commits down the road), so not a good option either.
2019-09-19 10:45:14 +02:00
Manuel Pégourié-Gonnard
020d9ba4ed Introduce abstraction mbedtls_pk_handle_t
This is the first in a series of commit aimed at removing the pk_info
structures when we're building with MBEDTLS_PK_SINGLE_TYPE enabled.

Introducing this abstraction allows us to later make it a two-valued type
(valid, invalid) instead, which is much lighter.
2019-09-19 10:45:14 +02:00
Simon Butcher
e8144aa8ea Merge remote-tracking branch 'origin/pr/657' into baremetal 2019-09-10 14:59:14 +01:00
Arto Kinnunen
3d7439e90f Review corrections 6
-Explicitly discard unnecessary return values of
 mbedtls_platform_put_uintXX_be by adding void casting.
2019-09-10 11:30:40 +03:00
Arto Kinnunen
84eeb4fd96 Review corrections 5
-Remove unintentional type chaneg (size_t to uint32_t)
 -Follow mbedtls coding style in trace message
2019-09-10 10:32:30 +03:00
Arto Kinnunen
9b3b19407a Review corrections 4
- Try to follow english grammar in function documentation
- Fix too long line
- Remove additional brackets
- Follow mbedtls coding style in for-statement
2019-09-09 17:21:18 +03:00
Arto Kinnunen
a3fa06e62a Review corrections 3
-Remove additional trace cause by rebase
-Update remaining 16/24/32-bit values to use functions, this uses
 additional 36 bytes.
2019-09-09 17:21:18 +03:00
Arto Kinnunen
4f4849a379 Review corrections 2
-Fix MSVC compiler warnings about size_t to uint32_t conversions by
 updating GET/PUT functions signature to use size_t.
-Add type casts to functions calling GET/PUT conversions
-Remove additional space after return statement
2019-09-09 17:21:18 +03:00
Arto Kinnunen
6e3f09b431 Review corrections
-Fix compiler warnings by typecast
 -Add missing brackets to few places
 -Remove additional line change
2019-09-09 17:21:18 +03:00
Arto Kinnunen
0b62ce8ed4 Use function for 16/24/32-bit BE conversion
Use functions for 16/24/32-bit big endian conversion to save ROM.
2019-09-09 17:21:18 +03:00
Simon Butcher
7fce190774 Merge remote-tracking branch 'origin/pr/635' into HEAD 2019-09-09 14:20:03 +01:00
Hanno Becker
7bcf2b5875 Introduce version comparing functions
This zero-cost abstraction allows to change the internal encoding
of TLS/DTLS versions in the future.
2019-09-05 17:37:55 +01:00
Hanno Becker
d91ede14c4 TinyCrypt ECDHE-PSK: Implement ClientKeyExchange writing 2019-09-04 16:19:49 +01:00
Hanno Becker
c7effc04c1 TinyCrypt SSL: Extend scope use of TC in CliKeyExchange writing
Extend scope of TC in ECDH-param extraction from CRT

Previously, TinyCrypt was only used for ECDHE-ECDSA/RSA ciphersuites.
This commit is a step towards using it for _all_ ciphersuites involving
ECDHE (specifically: ECDHE, ECDHE-PSK, static ECDH), extending the scope
of the use of TinyCrypt in the writing of the ClientKeyExchange message.
2019-09-04 16:19:49 +01:00
Hanno Becker
7352bd141e TinyCrypt SSL: Extend scope of SrvKeyExchange parsing
Extend scope of TC in ECDH-param extraction from CRT

Previously, TinyCrypt was only used for ECDHE-ECDSA/RSA ciphersuites.
This commit is a step towards using it for _all_ ciphersuites involving
ECDHE (specifically: ECDHE, ECDHE-PSK, static ECDH), extending the scope
of the use of TinyCrypt in the parsing of the ServerKeyExchange message.
2019-09-04 16:19:49 +01:00
Hanno Becker
b3a244847d TinyCrypt SSL: Impl. ECDH-param extraction from CRT for TinyCrypt 2019-09-04 16:19:49 +01:00
Hanno Becker
27b7e50dcd TinyCrypt SSL: Declare EC-related TLS RFC constants in SSL namespace
mbedtls/ecp.h defines constants

   MBEDTLS_ECP_PF_UNCOMPRESSED
   MBEDTLS_ECP_PF_COMPRESSED
   MBEDTLS_ECP_TLS_NAMED_CURVE

which regard the encoding of elliptic curves and curve point formats in TLS.
As such, they should be defined in the SSL namespace. Asides, this will help
replacing the legacy ECC crypto by alternative ECC implementations.
2019-09-04 16:19:49 +01:00
Hanno Becker
88889c618e Fixup: Add missing TinyCrypt guards 2019-09-04 16:17:45 +01:00
Hanno Becker
1521ec501c Remove TinyCrypt PRNG configuration from ssl_cli.c
The TinyCrypt PRNG is configured in mbedtls_ssl_setup().
2019-09-04 16:17:25 +01:00
Jarno Lamsa
7cb5c11067 Missing uECC ECDSA flagging 2019-09-04 16:17:25 +01:00
Jarno Lamsa
ad78931fb3 Signature wrapper for uECC 2019-09-04 16:17:25 +01:00
Hanno Becker
2f41b248c1 Remove calc_verify SSL function pointer 2019-08-29 16:01:32 +01:00
Hanno Becker
533f5b1d8d Remove ssl_optimize_checksum()
This function is called on client-only once the ciphersuite has
been chosen and it it is known which digest the client will need
for the handshake transcript throughout the handshake, and causes
all other unneeded handshake transcripts to be discontinued.

(On the server, we cannot call this function because we don't know
 which hash the client will those in its CertificateVerify message).

However, the benefit of this call is marginal, since transcript hash
computation is negligible compared to asymmetric crypto, and moreover
the handshake transcript contexts for the unused digests are still
stored in the SSL handshake parameter structure and not freed until
the end of the handshake.

Finally, if we're running on a _really_ constrained client, there
will be only one hash function enabled anyway, and in this case
the checksum optimization has no effect.

This commit therefore removes checksum optimization altogether,
saving some code on constrained systems.
2019-08-29 16:01:31 +01:00
Teppo Järvelin
4009d8f377 Make function mbedtls_ssl_set_hostname(...) as optional
Now function mbedtls_ssl_set_hostname is compile-time configurable
in config.h with define MBEDTLS_X509_REMOVE_HOSTNAME_VERIFICATION.
This affects to many x509 API's. See config.h for details.
2019-08-27 10:47:08 +03:00
Simon Butcher
f0f01e1f0a Merge remote-tracking branch 'origin/pr/630' into baremetal 2019-08-14 16:53:38 +01:00
Simon Butcher
434ab19164 Merge remote-tracking branch 'origin/pr/629' into baremetal 2019-08-14 16:53:13 +01:00
Hanno Becker
b72fc6a648 Don't use const var in initialization of another const var
ARM Compiler doesn't like it.
2019-08-12 18:01:48 +01:00