Commit graph

22 commits

Author SHA1 Message Date
Bence Szépkúti a2947ac7bb Update copyright notices to use Linux Foundation guidance
As a result, the copyright of contributors other than Arm is now
acknowledged, and the years of publishing are no longer tracked in the
source files.

Also remove the now-redundant lines declaring that the files are part of
MbedTLS.

This commit was generated using the following script:

# ========================
#!/bin/sh

# Find files
find '(' -path './.git' -o -path './3rdparty' ')' -prune -o -type f -print | xargs sed -bi '

# Replace copyright attribution line
s/Copyright.*Arm.*/Copyright The Mbed TLS Contributors/I

# Remove redundant declaration and the preceding line
$!N
/This file is part of Mbed TLS/Id
P
D
'
# ========================

Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
2020-08-19 16:37:36 +02:00
Bence Szépkúti f744bd72ee Update license headers to Apache-2.0 OR GPL-2.0-or-later
This will allow us to ship the LTS branches in a single archive

This commit was generated using the following script:

# ========================
#!/bin/sh

header1='\ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later\
 *\
 *  This file is provided under the Apache License 2.0, or the\
 *  GNU General Public License v2.0 or later.\
 *\
 *  **********\
 *  Apache License 2.0:\
 *\
 *  Licensed under the Apache License, Version 2.0 (the "License"); you may\
 *  not use this file except in compliance with the License.\
 *  You may obtain a copy of the License at\
 *\
 *  http://www.apache.org/licenses/LICENSE-2.0\
 *\
 *  Unless required by applicable law or agreed to in writing, software\
 *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT\
 *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\
 *  See the License for the specific language governing permissions and\
 *  limitations under the License.\
 *\
 *  **********\
 *\
 *  **********\
 *  GNU General Public License v2.0 or later:\
 *\
 *  This program is free software; you can redistribute it and/or modify\
 *  it under the terms of the GNU General Public License as published by\
 *  the Free Software Foundation; either version 2 of the License, or\
 *  (at your option) any later version.\
 *\
 *  This program is distributed in the hope that it will be useful,\
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of\
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\
 *  GNU General Public License for more details.\
 *\
 *  You should have received a copy of the GNU General Public License along\
 *  with this program; if not, write to the Free Software Foundation, Inc.,\
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.\
 *\
 *  **********'

find -path './.git' -prune -o '(' -name '*.c' -o -name '*.cpp' -o -name '*.fmt' -o -name '*.h' ')' -print | xargs sed -i "
# Normalize the first line of the copyright headers (no text on the first line of a block comment)
/^\/\*.*Copyright.*Arm/I s/\/\*/&\n */

# Insert new copyright header
/SPDX-License-Identifier/ i\
$header1

# Delete old copyright header
/SPDX-License-Identifier/,$ {
  # Delete lines until the one preceding the mbedtls declaration
  N
  1,/This file is part of/ {
    /This file is part of/! D
  }
}
"

# Format copyright header for inclusion into scripts
header2=$(echo "$header1" | sed 's/^\\\? \* \?/#/')

find -path './.git' -prune -o '(' -name '*.gdb' -o -name '*.pl' -o -name '*.py' -o -name '*.sh' ')' -print | xargs sed -i "
# Insert new copyright header
/SPDX-License-Identifier/ i\
$header2

# Delete old copyright header
/SPDX-License-Identifier/,$ {
  # Delete lines until the one preceding the mbedtls declaration
  N
  1,/This file is part of/ {
    /This file is part of/! D
  }
}
"
# ========================

Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
2020-06-15 12:48:48 +02:00
Hanno Becker d6028a1894 Improve macro hygiene
This commit improves hygiene and formatting of macro definitions
throughout the library. Specifically:
- It adds brackets around parameters to avoid unintended
  interpretation of arguments, e.g. due to operator precedence.
- It adds uses of the `do { ... } while( 0 )` idiom for macros that
  can be used as commands.
2019-04-24 10:51:54 +02:00
Hanno Becker 236ea16c01 Fix wrong conditional in free() functions 2018-12-18 15:30:30 +00:00
Hanno Becker 305e4e4f32 Implement parameter validation for ChaCha/Poly modules 2018-12-18 15:30:30 +00:00
Manuel Pégourié-Gonnard 21a65e0011 Fix usage of inline with for some compilers 2018-06-07 11:54:17 +02:00
Manuel Pégourié-Gonnard 2adb375c50 Add option to avoid 64-bit multiplication
Motivation is similar to NO_UDBL_DIVISION.

The alternative implementation of 64-bit mult is straightforward and aims at
obvious correctness. Also, visual examination of the generate assembly show
that it's quite efficient with clang, armcc5 and arm-clang. However current
GCC generates fairly inefficient code for it.

I tried to rework the code in order to make GCC generate more efficient code.
Unfortunately the only way to do that is to get rid of 64-bit add and handle
the carry manually, but this causes other compilers to generate less efficient
code with branches, which is not acceptable from a side-channel point of view.

So let's keep the obvious code that works for most compilers and hope future
versions of GCC learn to manage registers in a sensible way in that context.

See https://bugs.launchpad.net/gcc-arm-embedded/+bug/1775263
2018-06-07 11:05:33 +02:00
Manuel Pégourié-Gonnard 1729789075 Misc style adjustments
- fix some whitespace
- fix most overlong lines
- remove some superfluous parentheses
- s/result/ret/ for consistency with the rest of the library
2018-05-24 18:50:18 +02:00
Manuel Pégourié-Gonnard 9620f9b99e Rm mbedtls_ prefix form static functions
- prefix is no necessary for static ids and makes lines longer
- most often omitted (even though we're not fully consistent)
2018-05-24 17:04:02 +02:00
Manuel Pégourié-Gonnard fb78c90138 Use recently-introduced platform_util module 2018-05-24 16:54:57 +02:00
Manuel Pégourié-Gonnard c0dfcd4bf1 Simplify selftest functions using macros
This reduces clutter, making the functions more readable.

Also, it makes lcov see each line as covered. This is not cheating, as the
lines that were previously seen as not covered are not supposed to be reached
anyway (failing branches of the selftests).

Thanks to this and previous test suite enhancements, lcov now sees chacha20.c
and poly1305.c at 100% line coverage, and for chachapoly.c only two lines are
not covered (error returns from lower-level module that should never happen
except perhaps if an alternative implementation returns an unexpected error).
2018-05-24 13:37:31 +02:00
Manuel Pégourié-Gonnard a8fa8b8f96 poly1305: add test for parameter validation
Also fix two validation bugs found while adding the tests.

Also handle test dependencies the right way while at it.
2018-05-24 13:37:31 +02:00
Manuel Pégourié-Gonnard 1465602ee1 poly1305: fix bug in starts() and add test for it 2018-05-24 13:37:31 +02:00
Manuel Pégourié-Gonnard b1ac5e7842 poly1305: adjust parameter order
This module used (len, pointer) while (pointer, len) is more common in the
rest of the library, in particular it's what's used in the CMAC API that is
very comparable to Poly1305, so switch to (pointer, len) for consistency.
2018-05-24 13:37:31 +02:00
Manuel Pégourié-Gonnard 4edd51babe Rename poly1305_setkey() to poly1305_starts()
For consistency with the existing CMAC and HMAC APIs
2018-05-24 13:37:31 +02:00
Manuel Pégourié-Gonnard b7e99006f9 Avoid using %zu in selftest functions
This is a C99 feature and unfortunately we can't rely on it yet considering
the set of toolchain (versions) we want to support.
2018-05-24 13:37:31 +02:00
Manuel Pégourié-Gonnard 95d0bdbd84 Adapt the _ALT style to our new standard
- in .h files: only put the context declaration inside the #ifdef _ALT
  (this was changed in 2.9.0, ie after the original PR)
- in .c file: only leave selftest out of _ALT: even though some function are
  trivial to build from other parts, alt implementors might want to go another
way about them (for efficiency or other reasons)
2018-05-24 13:37:31 +02:00
Daniel King e6e7968c3a Minor style and formatting fixes.
This change corrects some minor style violations, mostly for spacing
around parentheses.
2018-05-24 13:37:31 +02:00
Daniel King b6897f67a4 Correct signedness of printf specifier in self tests 2018-05-24 13:37:31 +02:00
Daniel King dedf4a3e7b Adjust verbose self-test output to match other ciphers. 2018-05-24 13:37:31 +02:00
Daniel King a310c5e42b Allow some parameters to be NULL if the length is 0.
This change permits users of the ChaCha20/Poly1305 algorithms
(and the AEAD construction thereof) to pass NULL pointers for
data that they do not need, and avoids the need to provide a valid
buffer for data that is not used.
2018-05-24 13:37:31 +02:00
Daniel King adc32c0b50 Add Poly1305 authenticator algorithm (RFC 7539)
Test vectors are included from RFC 7539.

Poly1305 is also added to the benchmark program.
2018-05-24 13:37:31 +02:00