If RSA-CRT is used for signing, and if an attacker can cause a glitch
in one of the two computations modulo P or Q, the difference between
the faulty and the correct signature (which is not secret) will be
divisible by P or Q, but not by both, allowing to recover the private
key by taking the GCD with the public RSA modulus N. This is known as
the Bellcore Glitch Attack. Verifying the RSA signature before handing
it out is a countermeasure against it.
Fix the x509_get_subject_alt_name() function to not accept invalid
tags. The problem was that the ASN.1 class for tags consists of two
bits. Simply doing bit-wise and of the CONTEXT_SPECIFIC macro with the
input tag has the potential of accepting tag values 0x10 (private)
which would indicate that the certificate has an incorrect format.
The change in the truncated HMAC extension aligns Mbed TLS with the
standard, but breaks interoperability with previous versions. Indicate
this in the ChangeLog, as well as how to restore the old behavior.
Add mbedTLS.vcxproj to the VS2010 application template so that the next
time we auto-generate the application project files, the
LinkLibraryDependencies for mbedTLS.vcxproj are maintained.
Fixes#1347
In 2.7.0, we replaced a number of MD functions with deprecated inline
versions. This causes ABI compatibility issues, as the functions are no
longer guaranteed to be callable when built into a shared library.
Instead, deprecate the functions without also inlining them, to help
maintain ABI backwards compatibility.
Add missing MBEDTLS_DEPRECATED_REMOVED guards around the definitions
of mbedtls_aes_decrypt and mbedtls_aes_encrypt.
This fixes the build under -Wmissing-prototypes -Werror.
Fixes#1388
Extend the pkparse test suite with the newly created keys
encrypted using PKCS#8 with PKCS#5 v2.0 with PRF being
SHA224, 256, 384 and 512.
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
We now have support for the entire SHA family to be used as
PRF in PKCS#5 v2.0, therefore we need to add new keys to test
these new functionalities.
This patch adds the new keys in `tests/data_files` and
commands to generate them in `tests/data_files/Makefile`.
Note that the pkcs8 command in OpenSSL 1.0 called with
the -v2 argument generates keys using PKCS#5 v2.0 with SHA1
as PRF by default.
(This behaviour has changed in OpenSSL 1.1, where the exact same
command instead uses PKCS#5 v2.0 with SHA256)
The new keys are generated by specifying different PRFs with
-v2prf.
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
Some unit tests for pbkdf2_hmac() have results longer than
99bytes when represented in hexadecimal form.
For this reason extend the result array to accommodate
longer strings.
At the same time make memset() parametric to avoid
bugs in the future.
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
Test vectors for SHA224,256,384 and 512 have been
generated using Python's hashlib module by the
following oneliner:
import binascii, hashlib
binascii.hexlify(hashlib.pbkdf2_hmac(ALGO, binascii.unhexlify('PASSWORD'), binascii.unhexlify('SALT'), ITER, KEYLEN)))
where ALGO was 'sha224', 'sha256', 'sha384' and 'sha512'
respectively.
Values for PASSWORD, SALT, ITER and KEYLEN were copied from the
existent test vectors for SHA1.
For SHA256 we also have two test vectors coming from RFC7914 Sec 11.
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
Currently only SHA1 is supported as PRF algorithm for PBKDF2
(PKCS#5 v2.0).
This means that keys encrypted and authenticated using
another algorithm of the SHA family cannot be decrypted.
This deficiency has become particularly incumbent now that
PKIs created with OpenSSL1.1 are encrypting keys using
hmacSHA256 by default (OpenSSL1.0 used PKCS#5 v1.0 by default
and even if v2 was forced, it would still use hmacSHA1).
Enable support for all the digest algorithms of the SHA
family for PKCS#5 v2.0.
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
Fix valid tag length values for mbedtls_ccm_encrypt_and_tag() function.
Add valid value ranges for mbedtls_ccm_auth_decrypt() parameters.
Signed-off-by: Mathieu Briand <mbriand@witekio.com>
