When legacy CID is enabled at compile time, but not used at runtime, we
would incorrectly skip the sequence number at the beginning of the AAD.
There was already two "else" branches for writing the sequence number
but none of them was taken in that particular case.
Simplify the structure of the code: with TLS 1.2 (we're already in that
branch), we always write the sequence number, unless we're using
standard CID.
Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
NEW_SESSION_TICKETS* are processed in handshake_step.
Change the stop condition from `mbedtls_ssl_is_handshake_over`
to directly check.
Signed-off-by: Jerry Yu <jerry.h.yu@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>
The DTLS 1.2 CID specification has been published as RFC 9146. This PR updates the implementation to match the RFC content.
Signed-off-by: Hannes Tschofenig <hannes.tschofenig@arm.com>
Fix an issue whereby a variable was used to check the size of incoming
TLS records against the configured maximum prior to it being set to the
right value.
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
According to the TLS 1.3 standard the CCS records must be unencrypted.
When a record is not encrypted the counter, used in the dynamic IV
creation, is not incremented.
Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
This could lead to a potential buffer overread with small
MBEDTLS_SSL_IN_CONTENT_LEN.
Change the bound calculations so that it is apparent
what lengths and sizes are used.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
Fix an issue reported by Coverity whereby some constant time functions
called from the ssl decrypt code could potentially access uninitialised
memory.
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
