Commit Graph

84 Commits

Author SHA1 Message Date
Mateusz Starzyk
bb2ced33dd Ignore plaintext length for CCM*-no-tag.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-10-21 11:33:37 +02:00
Mateusz Starzyk
5d7f6b1fd5 Remove rendundat ctx->add_len check.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-09-06 12:09:34 +02:00
Mateusz Starzyk
64f0b5f454 Return BAD_INPUT error for CCM context's erroneous state
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-09-02 11:50:54 +02:00
Mateusz Starzyk
7251eda6ff Replace BAD_SEQUENCE error with BAD_INPUT
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-09-01 13:26:44 +02:00
Mateusz Starzyk
cbefb6ba4d Merge branch 'development' into ccm_chunked
Conflicts:
	library/ccm.c

Conflict resolved by re-applying the MBEDTLS_BYTE_0 macro.
Conflict resolved by ignoring the MBEDTLS_PUT_UINT16_BE macro
used in development branch on the 'b' buffer, because the 'b'
buffer is removed in current branch.
2021-08-24 15:14:23 +02:00
Joe Subbiani
d0687856af Improve documentation and add more uses of MBEDTLS_PUT
minor changes, such as improving the documentation for the byte reading
macros, and using MBEDTLS_PUT_UINT16_xy in place of byte reading
macro combinations

Signed-off-by: Joe Subbiani <joe.subbiani@arm.com>
2021-08-19 09:57:42 +01:00
Joe Subbiani
2194dc477a Replace MBEDTLS_CHAR_x with MBEDTLS_BYTE_x
The CHAR macros casted to an unsigned char which in this project
is garunteed to be 8 bits - the same as uint8_t (which BYTE casts
to) therefore, instances of CHAR have been swapped with BYTE and
the number of macros have been cut down

Signed-off-by: Joe Subbiani <joe.subbiani@arm.com>
2021-08-19 09:56:47 +01:00
Joe Subbiani
cd84d76e9b Add Character byte reading macros
These cast to an unsigned char rather than a uint8_t
like with MBEDTLS_BYTE_x
These save alot of space and will improve maintence by
replacing the appropriate code with MBEDTLS_CHAR_x

Signed-off-by: Joe Subbiani <joe.subbiani@arm.com>
2021-08-19 09:55:41 +01:00
Mateusz Starzyk
2f1754916c Improve comment on local_output.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 14:00:14 +02:00
Mateusz Starzyk
b73c3ec1bc Restore MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED as default ret.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 14:00:14 +02:00
Mateusz Starzyk
62d22f9782 Use additional state in CCM to track auth data input.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 14:00:14 +02:00
Mateusz Starzyk
4f2dd8aada Fix errors returned by CCM functions.
Add new error code for calling functions in wrong order.

Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 14:00:14 +02:00
Mateusz Starzyk
f337850738 Use const size buffer for local output in CCM decryption.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:59:36 +02:00
Mateusz Starzyk
c562788068 Fix local buffer allocation conditions.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:58:39 +02:00
Mateusz Starzyk
c8bdf36a72 Validate tag pointer in ccm function.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:58:39 +02:00
Mateusz Starzyk
1bda9451ef Factor out common code from ccm decrypt functions.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:58:39 +02:00
Mateusz Starzyk
eb395c00c9 Move 'Authenticated decryption' comment.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:58:39 +02:00
Mateusz Starzyk
22f7a35ca4 Do not use output buffer for internal XOR during decryption.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:58:39 +02:00
Mateusz Starzyk
36d3b89c84 Verify input data lengths.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:56:37 +02:00
Mateusz Starzyk
2d5652acee Move ccm error state handling.
Remove error clearing from ccm_starts() and ccm_set_lengths().
Add error check in ccm_update_ad(), ccm_update() and ccm_finish().

Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:56:37 +02:00
Mateusz Starzyk
5d97601e81 Remove ccm input validation.
VALIDATE and VALIDATE_RET macros are obsolete.

Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:56:37 +02:00
Mateusz Starzyk
ca9dc8d1d7 Rename ccm_calculate_first_block function.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:56:37 +02:00
Mateusz Starzyk
c52220d775 Clear temporary buffer after block crypt operation.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:56:37 +02:00
Mateusz Starzyk
a9cbdfbb34 Replace ccm status flags with bitshifts.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:56:37 +02:00
Mateusz Starzyk
663055f784 Remove UPDATE_CBC macro and working b buffer.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:56:37 +02:00
Mateusz Starzyk
20bac2fbe4 Fix chunked ccm update.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:56:37 +02:00
Mateusz Starzyk
05e92d67bb Fix crypt mode configuration. Validate parameters in chunked input functions.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:56:37 +02:00
Mateusz Starzyk
6a15bcf61b Add support for chunked plaintext/cyphertext input.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:56:37 +02:00
Mateusz Starzyk
2ad7d8e1ff Replace CCM_CRYPT macro with a more versatile static function.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:56:37 +02:00
Mateusz Starzyk
33392450b7 Add chunked auth data support
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:56:37 +02:00
Mateusz Starzyk
eb2ca96d69 Store set lenghts in ccm context.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:56:37 +02:00
Mateusz Starzyk
88c4d624f8 Clear context state if previous operation failed.
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:56:37 +02:00
Mateusz Starzyk
793692cbcb Split ccm_auth function.
Move logic to ccm_starts, ccm_set_lengths, ccm_update_ad,
ccm_update and ccm_finish
Use separate variable to track context state.
Encode first block only if both mbedtls_ccm_starts() and
mbedtls_ccm_set_lengths() were called.

Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:56:37 +02:00
Mateusz Starzyk
89d469cdb4 Move working variables to ccm context structure
Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
2021-08-10 13:56:37 +02:00
Fredrik Strupe
5e940c6068 Fix additional data length field check for CCM
The CCM specification (NIST SP 800-38C) mandates that the formatting of
the additional data length l(a) changes when it is greater _or equal_ to
2^16 - 2^8 (>= 0xFF00). Since such lengths are not supported in mbed TLS,
the operation should fail in such cases.

This commit fixes an off-by-one error which allowed encryption/decryption
to be executed when l(a) was equal to 0xFF00, resulting in an
incorrect/non-standard length format being used.

Fixes #3719.

Signed-off-by: Fredrik Strupe <fredrik.strupe@silabs.com>
2020-10-08 12:09:44 +02:00
Bence Szépkúti
1e14827beb 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 10:35:41 +02:00
Gilles Peskine
db09ef6d22 Include common.h instead of config.h in library source files
In library source files, include "common.h", which takes care of
including "mbedtls/config.h" (or the alternative MBEDTLS_CONFIG_FILE)
and other things that are used throughout the library.

FROM=$'#if !defined(MBEDTLS_CONFIG_FILE)\n#include "mbedtls/config.h"\n#else\n#include MBEDTLS_CONFIG_FILE\n#endif' perl -i -0777 -pe 's~\Q$ENV{FROM}~#include "common.h"~' library/*.c 3rdparty/*/library/*.c scripts/data_files/error.fmt scripts/data_files/version_features.fmt

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2020-07-02 11:26:57 +02:00
Janos Follath
24eed8d2d2 Initialise return values to an error
Initialising the return values to and error is best practice and makes
the library more robust.
2019-12-03 16:07:18 +00:00
Jaeden Amero
3956a847e6 Merge remote-tracking branch 'origin/pr/2092' into development
* origin/pr/2092:
  Add more missing parentheses around macro parameters
  Add further missing brackets around macro parameters
  Adapt ChangeLog
  Improve macro hygiene
2019-04-24 11:17:21 +01:00
Hanno Becker
1eeca41472 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.
2019-02-19 17:59:00 +00:00
Andrzej Kurek
ee3c435063 Whitespace fix for ccm, gcm, and pkcs5
Fix whitespace mistakes  in ccm, gcm, and pkcs5.
2019-01-10 03:17:34 -05:00
Michał Janiszewski
c79e92b802 Rename remaining test data 2019-01-10 03:14:00 -05:00
Michał Janiszewski
9aeea93cc3 Rename globals to avoid shadowing by various function arguments
It's easier and more telling to rename the globals used only for test,
rather than rename all the shadowing function arguments.
2019-01-10 03:14:00 -05:00
k-stachowiak
6adb0574ea Improve details of CCM parameter validation and documentation 2018-12-19 19:02:39 +01:00
k-stachowiak
f712534801 Add missing validation code in CCM 2018-12-19 19:02:39 +01:00
k-stachowiak
ff8a0989c8 Allow empty arguments in some CCM functions' parameter validation 2018-12-19 19:02:39 +01:00
k-stachowiak
fd42d531ba Explicitly allow NULL as an argument to mbedtls_ccm_free() 2018-12-19 19:02:39 +01:00
k-stachowiak
26d365eb54 Add parameter validation for CCM 2018-12-19 19:02:39 +01:00
Ron Eldor
1b9b217abf enforce input and output of ccm selftest on stack
In `mbedtls_ccm_self_test()`, enforce input and output
buffers sent to the ccm API to be contigous and aligned,
by copying the test vectors to buffers on the stack.
2018-07-30 11:29:26 +03:00
Janos Follath
4c579391b1 CCM*: Remove superfluous braces 2018-05-30 13:58:38 +01:00