CCM/GCM can be either fully accelerated or rely on just the key type
being accelerated. This means that ultimately it is just the key
type which determines if the legacy block cipher modes need to
be auto-enabled or not.
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
This commit also updates test_suite_pkparse.data file adding
MBEDTLS_CIPHER_C dependencies whenever PKCS[5/12] is used.
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
Any timing variance dependant on the output of this function enables a
Bleichenbacher attack. It is extremely difficult to use safely.
In the Marvin attack paper
(https://people.redhat.com/~hkario/marvin/marvin-attack-paper.pdf) the
author suggests that implementations of PKCS 1.5 decryption that don't
include a countermeasure should be considered inherently dangerous.
They suggest that all libraries implement the same countermeasure, as
implementing different countermeasures across libraries enables the
Bleichenbacher attack as well.
This is extremely fragile and therefore we don't implement it. The use
of PKCS 1.5 in Mbed TLS implements the countermeasures recommended in
the TLS standard (7.4.7.1 of RFC 5246) and is not vulnerable.
Add a warning to PKCS 1.5 decryption to warn users about this.
Signed-off-by: Janos Follath <janos.follath@arm.com>
Directly export the public part of a key pair without having to go through
intermediate objects (using mbedtls_ecp_point_write_binary would require a
group object and a point object).
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Set the public key in a key pair. This complements mbedtls_ecp_read_key and
the functions can be used in either order.
Document the need to call check functions separately.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Sometimes you don't need to have all the parts of a key pair object. Relax
the behavior of mbedtls_ecp_keypair so that you can extract just the parts
that you need.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Add a simple function to get the group id from a key object.
This information is available via mbedtls_ecp_export, but that function
consumes a lot of memory, which is a waste if all you need is to identify
the curve.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This makes the function always available with its
its implementation depending on MBEDTLS_USE_PSA_CRYPTO.
Related dependencies and tests are updated as well.
Fixes#7583.
Signed-off-by: Tomi Fontanilles <129057597+tomi-font@users.noreply.github.com>
This brings some improvements to comments/
function prototypes that relate to PKCS#1.
Signed-off-by: Tomi Fontanilles <129057597+tomi-font@users.noreply.github.com>
Mbed TLS doesn't support DSA at all, and doesn't support domain parameters
for FFDH (only predefined groups).
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
As a consequence BLOCK_CIPHER will be enabled when:
- CIPHER_C is not defined
- a proper driver is present for one of AES, ARIA and/or Camellia key types
Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
