Instead of fully validating beforehand
signature algorithms with regards to the
private key, do minimum validation and then
just try to compute the signature. If it
fails try another reasonable algorithm if any.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
When providing proof of possession of
an RSA private key, allow the usage for RSA
PSS signatures of a hash with a security
level lower that the security level of the
RSA private key.
We did not allow this in the first place to
align with the ECDSA case. But as it is not
mandated by the TLS 1.3 specification (in
contrary to ECDSA), let's allow it.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
When selecting the server certificate based on
the signature algorithms supported by the client,
check the signature algorithms as close as possible
to the way they are checked to compute the
signature for the server to prove it possesses
the private key associated to the certificate.
That way we minimize the odds of selecting a
certificate for which the server will not be
able to compute the signature to prove it
possesses the private key associated to the
certificate.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
As a public header, it should no longer include common.h, just use
build_info.h which is what we actually need anyway.
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
gcm.c had a slightly different pattern for the conditional inclusion of
platform.h which didn't fit the general replacement. Simplify it manually.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Some source files had code to set mbedtls_xxx aliases when
MBEDTLS_PLATFORM_C is not defined. These aliases are defined unconditionally
by mbedtls/platform.h, so these macro definitions were redundant. Remove
them.
This commit used the following code:
```
perl -i -0777 -pe 's~#if !defined\(MBEDTLS_PLATFORM_C\)\n(#define (mbedtls|MBEDTLS)_.*\n|#include <(stdarg|stddef|stdio|stdlib|string|time)\.h>\n)*#endif.*\n~~mg' $(git grep -l -F '#if !defined(MBEDTLS_PLATFORM_C)')
```
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Some source files included platform.h in a nested conditional. The previous
commit "Include platform.h unconditionally: automatic part" only removed
the outer conditional. This commit removes the inner conditional.
This commit once again replaces most occurrences of conditional inclusion of
platform.h, using the following code:
```
perl -i -0777 -pe 's!#if.*\n#include "mbedtls/platform.h"\n(#else.*\n(#define (mbedtls|MBEDTLS)_.*\n|#include <(stdarg|stddef|stdio|stdlib|string|time)\.h>\n)*)?#endif.*!#include "mbedtls/platform.h"!mg' $(git grep -l '#include "mbedtls/platform.h"')
```
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
We used to include platform.h only when MBEDTLS_PLATFORM_C was enabled, and
to define ad hoc replacements for mbedtls_xxx functions on a case-by-case
basis when MBEDTLS_PLATFORM_C was disabled. The only reason for this
complication was to allow building individual source modules without copying
platform.h. This is not something we support or recommend anymore, so get
rid of the complication: include platform.h unconditionally.
There should be no change in behavior since just including the header should
not change the behavior of a program.
This commit replaces most occurrences of conditional inclusion of
platform.h, using the following code:
```
perl -i -0777 -pe 's!#if.*\n#include "mbedtls/platform.h"\n(#else.*\n(#define (mbedtls|MBEDTLS)_.*\n|#include <(stdarg|stddef|stdio|stdlib|string|time)\.h>\n)*)?#endif.*!#include "mbedtls/platform.h"!mg' $(git grep -l '#include "mbedtls/platform.h"')
```
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
- Some things that were indicated as in the near future are now done.
- Clarify when these macros are needed and when they're not.
- Prepare to make the header public.
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
TLS uses it to derive the session secret. The algorithm takes a serialized
point in an uncompressed form, extracts the X coordinate and computes
SHA256 of it. It is only expected to work with P-256.
Fixes#5978.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
If `now == session->start` or the timer of
client is faster than server, client age might
be bigger than server.
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
- Ticket age and ticket age add, obfuscated age
use different unit. Align the units to million
seconds.
- Add maximum ticket age check. Until now,
ticket_lifetime is not recorded in server side.
Check it with maximum ticket_lifetime.
- Free session when error found.
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
The unit tests were created by capturing runs of the existing function during
execution of existing unit tests.
Signed-off-by: Tom Cosgrove <tom.cosgrove@arm.com>
"bignum_new.c(61,52): warning C4244: 'function': conversion from 'mbedtls_mpi_uint' to 'unsigned int', possible loss of data"
Signed-off-by: Tom Cosgrove <tom.cosgrove@arm.com>
A number of places lacked the necessary dependencies on one of
the used features: MD, key exchange with certificate,
entropy, or ETM.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
The same elements are now also used when MBEDTLS_USE_PSA_CRYPTO
is defined and respective SHA / MD5 defines are missing.
A new set of macros added in #6065 is used to reflect these dependencies.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
Since a is not a pointer, it is passed by value and declaring it const
doesn’t make any sense and on the first read can make me miss the fact
that a is not a pointer.
Signed-off-by: Janos Follath <janos.follath@arm.com>
Co-authored-by: Tom Cosgrove <81633263+tom-cosgrove-arm@users.noreply.github.com>
Co-authored-by: Werner Lewis <Werner.Lewis@arm.com>
Signed-off-by: Janos Follath <janos.follath@arm.com>
Selected ciphersuite MUST be same with ciphsersuite of PSK.
Overwrite the old ciphersuite with the one of PSK.
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
- wrong typo in comments
- replace psk null check with key_exchange_mode check
- set psk NULL when error return in export hs psk
Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
Avoid the shorthand practice of the form 'x = func(foo)->bar' which
exposes the code to NULL pointer de-referencing when the 'func()'
returns a NULL pointer.
The first chunk is for when the curve group code is not recognized by
the library, and is cleanly rejected if offered.
The second chunk addresses the unlikely case of an internal error:
if 'mbedtls_pk_can_do()' returns TRUE, it should rule out
'mbedtls_pk_ec()' returning a NULL, unless there is a regression.
Signed-off-by: Leonid Rozenboim <leonid.rozenboim@oracle.com>
