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Author SHA1 Message Date
Manuel Pégourié-Gonnard
884569cdb4 Avoid code duplication in ecp_mul() 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
646393bb1e Move ops count to top-level context 
When a restartable function calls another restartable function, the current
ops_count needs to be shared to avoid either doing too many operations or
returning IN_PROGRESS uselessly. So it needs to be in the top-level context
rather than a specific sub-context.
 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
8467e6848d Stop checking for argument change 
This was intended to detect aborted operations, but now that case is handled
by the caller freeing the restart context.

Also, as the internal sub-context is managed by the callee, no need for the
caller to free/reset the restart context between successful calls.
 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
3cade22f96 Switch to restart context internally 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
b739a712d1 Start moving to new design/API 
Following discussion in the team, it was deemed preferable for the restart
context to be explicitly managed by the caller.

This commits in the first in a series moving in that directly: it starts by
only changing the public API, while still internally using the old design.
Future commits in that series will change to the new design internally.

The test function was simplified as it no longer makes sense to test for some
memory management errors since that responsibility shifted to the caller.
 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
45fd0164dd Rename multiplication-specific restart context 
It's going to be convenient for each function that can generate a
MBEDTLS_ERR_ECP_IN_PROGRESS on its own (as opposed to just passing it around)
to have its own restart context that they can allocate and free as needed
independently of the restart context of other functions.

For example ecp_muladd() is going to have its own restart_muladd context that
in can managed, then when it calls ecp_mul() this will manage a restart_mul
context without interfering with the caller's context.

So, things need to be renames to avoid future name clashes.
 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
e685449004 Scale ops count for larger curves 
From a user's perspective, you want a "basic operation" to take approximately
the same amount of time regardless of the curve size, especially since max_ops
is a global setting: otherwise if you pick a limit suitable for P-384 then
when you do an operation on P-256 it will return way more often than needed.

Said otherwise, a user is actually interested in actual running time, and we
do the API in terms of "basic ops" for practical reasons (no timers) but then
we should make sure it's a good proxy for running time.
 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
1c678e0e06 Update doc about minimum max_ops value 
Ok, so the original plan was to make mpi_inv_mod() the smallest block that
could not be divided. Updated plan is that the smallest block will be either:
- ecp_normalize_jac_many() (one mpi_inv_mod() + a number or mpi_mul_mpi()s)
- or the second loop in ecp_precompute_comb()

With default settings, the minimum non-restartable sequence is:
- for P-256: 222M
- for P-384: 341M

This is within a 2-3x factor of originally planned value of 120M. However,
that value can be approached, at the cost of some performance, by setting
ECP_WINDOW_SIZE (w below) lower than the default of 6. For example:
- w=4 -> 166M for any curve (perf. impact < 10%)
- w=2 -> 130M for any curve (perf. impact ~ 30%)

My opinion is that the current state with w=4 is a good compromise, and the
code complexity need to attain 120M is not warranted by the 1.4 factor between
that and the current minimum with w=4 (which is close to optimal perf).
 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
213541a548 Make the first precomp loop restartable 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
ae55707b28 Turn double loop into single loop 
In preparation for making the loop restartable
 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
e2d7cb3f10 Start splitting precompute_comb() 
This is the easy part: with the current steps, all information between steps
is passed via T which is already saved. Next we'll need to split at least the
first loop, and maybe calls to normalize_jac_many() and/or the second loop.
 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
67c83fb871 Give a constant a name 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
fc3e0beabf Separate auxiliary array in precompute_comb() 
Separating main computation from filling of the auxiliary array makes things
clearer and easier to restart as we don't have to remember the in-progress
auxiliary array.
 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
07bf6f52c1 Tune T ownership code + comments 
Don't miss the little code changes among all those comments change :)
 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
085b1dff40 Allow T to be computed in multiple steps 
Previously there were only two states:
- T unallocated
- T allocated and valid

Now there are three:
- T unallocated
- T allocated and in progress
- T allocated and valid

Introduce new bool T_ok to distinguish the last two states.
 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
c9c0aa6306 Remember precomputed table 
Free it as soon as it's no longer needed, but as a backup free it in
ecp_group_free(), in case ecp_mul() is not called again after returning
ECP_IN_PROGRESS.

So far we only remember it when it's fully computed, next step is to be able
to compute it in multiple steps.
 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
c5d844b999 Full restart support in ecp_mul_comb_core() 
Still recomputing table every time, though.
 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
2fad7ae02a Start actually splitting computation 
Temporary state is quite inefficient: pre-computed table is recomputed every
single time. This is WIP obviously.
 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
8962ddbb23 Don't write to destination until we're done 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
78d564a841 Add check for changing arguments 
In case of argument change, freeing everything is not the most efficient
(wastes one free()+calloc()) but makes the code simpler, which is probably
more important here
 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
77af79a324 Add proper allocation of restart context 
We'll need to store MPIs and other things that allocate memory in this
context, so we need a place to free it. We can't rely on doing it before
returning from ecp_mul() as we might return MBEDTLS_ERR_ECP_IN_PROGRESS (thus
preserving the context) and never be called again (for example, TLS handshake
aborted for another reason). So, ecp_group_free() looks like a good place to
do this, if the restart context is part of struct ecp_group.

This means it's not possible to use the same ecp_group structure in different
threads concurrently, but:
- that's already the case (and documented) for other reasons
- this feature is precisely intended for environments that lack threading

An alternative option would be for the caller to have to allocate/free the
restart context and pass it explicitly, but this means creating new functions
that take a context argument, and putting a burden on the user.
 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
62738e9b17 Further restrict variable scope by moving code 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
391f44153d Move more code to separate function 
This reduces the scope of some variables (M, k), clarifying where they're
used.
 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
24be79588d Group related code together 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
4b2336d7f6 Move some more code to new function 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
22be635d13 Re-order some more code 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
ec5606ad0c Extract code to separate function 
ecp_mul_comb() is already 110 lines long and we're going to add complexity
with the early-return+restart code, so let's try to make it simpler first.
 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
7306dff01f Group related code together 
This will be split to a new function next.
 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
510d5caece Add early return test + fake implementation 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
054433c493 Add mbedtls_ecp_set_max_ops() 
The plan is to count basic operations as follows:
- call to ecp_add_mixed()   -> 11
- call to ecp_double_jac()  -> 8
- call to mpi_mul_mpi()     -> 1
- call to mpi_inv_mod()     -> 120
- everything else           -> not counted

The counts for ecp_add_mixed() and ecp_double_jac() are based on the actual
number of calls to mpi_mul_mpi() they they make.

The count for mpi_inv_mod() is based on timing measurements on K64F and
LPC1768 boards, and are consistent with the usual very rough estimate of one
inversion = 100 multiplications. It could be useful to repeat that measurement
on a Cortex-M0 board as those have smaller divider and multipliers, so the
result could be a bit different but should be the same order of magnitude.

The documented limitation of 120 basic ops is due to the calls to mpi_inv_mod()
which are currently not interruptible nor planned to be so far.
 2017-08-09 11:44:53 +02:00
Manuel Pégourié-Gonnard
225b37a543 Fix typos in comment 2017-08-09 11:44:53 +02:00
Ron Eldor
7269fee0b6 Check return code of mbedtls_mpi_fill_random 
Add MBEDTLS_MPI_CHK to check for error value of mbedtls_mpi_fill_random.
Reported and fix suggested by guidovranken in #740
 2017-07-27 21:44:33 +01:00
Janos Follath
bfea4a7c02 Remove mutexes from ECP hardware acceleration 
Protecting the ECP hardware acceleratior with mutexes is inconsistent with the
philosophy of the library. Pre-existing hardware accelerator interfaces
leave concurrency support to the underlying platform.

Fixes #863
 2017-07-27 21:44:32 +01:00
Ron Eldor
ca6ff5884d Check return code of mbedtls_mpi_fill_random 
Add MBEDTLS_MPI_CHK to check for error value of mbedtls_mpi_fill_random.
Reported and fix suggested by guidovranken in #740
 2017-07-27 15:08:01 +01:00
Janos Follath
78b1473ff3 Remove mutexes from ECP hardware acceleration 
Protecting the ECP hardware acceleratior with mutexes is inconsistent with the
philosophy of the library. Pre-existing hardware accelerator interfaces
leave concurrency support to the underlying platform.

Fixes #863
 2017-07-27 15:08:01 +01:00
Janos Follath
6c8ccd5be4 Fix cleanup label alignment 2017-05-11 22:42:14 +01:00
Janos Follath
c44ab97cc9 Apply review feedback on ECP interface 
Naming conventions are revised, style issues corrected and minor
optimisation added.
 2017-05-11 22:42:14 +01:00
Janos Follath
b8a90fb51c Update ECP hardware abstraction interface 
With this commit the Elliptic Curve Point interface is rewised. Two
compile time options has been removed to simplify the interface and
the function names got a new prefix that indicates that these functions
are for internal use and not part of the public interface.
 2017-05-11 22:42:14 +01:00
Janos Follath
430d3376c9 Add thread safety to ECP hardware acceleration 
The intended use of the abstraction layer for Elliptic Curve Point
arithmetic is to enable using hardware cryptographic accelerators.
These devices are a shared resource and the driver code rarely provides
thread safety.

This commit adds mutexes to the abstraction layer to protect the device
in a multi-threaded environment.
 2017-05-11 22:42:14 +01:00
Janos Follath
16e63ea2e2 Fix alternative ECP function names 
The alternative Elliptic Curve Point arithmetic functions didn't have
an 'mbedtls_' prefix as required by check-names.sh.
 2017-05-11 22:42:14 +01:00
Janos Follath
4d9c69dde8 Fix ECP alternative macro names 
The compile time macros enabling the initialisation and deinitialisation
in the alternative Elliptic Curve Point arithmetic implementation had
names that did not end with '_ALT' as required by check-names.sh.
 2017-05-11 22:42:14 +01:00
Janos Follath
47d28f08a6 Remove alt_internal directory 2017-05-11 22:42:14 +01:00
Janos Follath
372697b6b7 Clean up ECP abstraction layer code 
This commit fixes several style issues and fixes in the documentation
of the Elliptic Curve Point arithmetic abstraction layer.
 2017-05-11 22:42:14 +01:00
Janos Follath
b069753313 ECP: Add module and function level replacement options. 2017-05-11 22:42:14 +01:00
Janos Follath
98e28a74e3 Address user reported coverity issues. 2016-06-09 13:41:28 +01:00
Manuel Pégourié-Gonnard
de9f953b9f Optimize more common cases in ecp_muladd() 2015-10-23 15:50:37 +02:00
Manuel Pégourié-Gonnard
fadacb9d0b Merge branch 'development' into iotssl-461-ecjpake-finalization 
* development: (73 commits)
  Bump yotta dependencies version
  Fix typo in documentation
  Corrected misleading fn description in ssl_cache.h
  Corrected URL/reference to MPI library
  Fix yotta dependencies
  Fix minor spelling mistake in programs/pkey/gen_key.c
  Bump version to 2.1.2
  Fix CVE number in ChangeLog
  Add 'inline' workaround where needed
  Fix references to non-standard SIZE_T_MAX
  Fix yotta version dependencies again
  Upgrade yotta dependency versions
  Fix compile error in net.c with musl libc
  Add missing warning in doc
  Remove inline workaround when not useful
  Fix macroization of inline in C++
  Changed attribution for Guido Vranken
  Merge of IOTSSL-476 - Random malloc in pem_read()
  Fix for IOTSSL-473 Double free error
  Fix potential overflow in CertificateRequest
  ...

Conflicts:
	include/mbedtls/ssl_internal.h
	library/ssl_cli.c
 2015-10-20 15:00:29 +02:00
Manuel Pégourié-Gonnard
0223ab9d38 Fix macroization of inline in C++ 
When compiling as C++, MSVC complains about our macroization of a keyword.
Stop doing that as we know inline is always available in C++
 2015-10-05 11:41:36 +01:00
Manuel Pégourié-Gonnard
1a7c5ef42b Optimize some case of mbedtls_ecp_muladd() 
Those are used by EC-JPAKE
 2015-09-07 12:43:10 +02:00
Manuel Pégourié-Gonnard
6029a85572 Add ecjpake_zpk_read() 
Not really tested yet
 2015-09-07 12:43:09 +02:00
Manuel Pégourié-Gonnard
d9a3f47ecd Add mbedtls_ecp_gen_keypair_base() 2015-09-07 12:43:09 +02:00
Manuel Pégourié-Gonnard
37ff14062e Change main license to Apache 2.0 2015-09-04 14:21:07 +02:00
Manuel Pégourié-Gonnard
6fb8187279 Update date in copyright line 2015-07-28 17:11:58 +02:00
Manuel Pégourié-Gonnard
20af64dc2c Still need to #define inline for MSVC 
I only tested with VS2015 earlier, but previous versions apparently still
don't know that standard C99 keyword though it's documented on MSDN...
 2015-07-07 23:21:30 +02:00
Manuel Pégourié-Gonnard
2505528be4 Rm obsolete defines for inline wiht MSVC 
The "inline" keyword is supported since Visual Studio 2005 according to MSDN,
and we require Visual Studio 2010 or higher.
 2015-07-01 17:22:36 +02:00
Manuel Pégourié-Gonnard
07894338a0 Rename M255 to Curve25519 2015-06-23 13:09:10 +02:00
Manuel Pégourié-Gonnard
7320eb46d4 Remove references to some Montgomery curves 
After all it looks like those won't become standard.
 2015-06-23 13:09:10 +02:00
Manuel Pégourié-Gonnard
c0696c216b Rename mbedtls_mpi_msb to mbedtls_mpi_bitlen 2015-06-18 16:49:37 +02:00
Manuel Pégourié-Gonnard
88db5da117 Add pre-defined profiles for cert verification 2015-06-17 14:27:38 +02:00
Manuel Pégourié-Gonnard
cb46fd8216 Avoid non-standard strcasecmp() 2015-05-29 10:18:09 +02:00
Manuel Pégourié-Gonnard
6a8ca33fa5 Rename ERR_xxx_MALLOC_FAILED to ..._ALLOC_FAILED 2015-05-28 16:25:05 +02:00
Manuel Pégourié-Gonnard
7551cb9ee9 Replace malloc with calloc 
- platform layer currently broken (not adapted yet)
- memmory_buffer_alloc too
 2015-05-26 16:04:06 +02:00
Manuel Pégourié-Gonnard
2088ba6d30 Merge branch 'mbedtls-1.3' into development 
* mbedtls-1.3:
  Update Changelog for recent contribution
  Perf: rewrite of ecp_double_jac

Conflicts:
	library/ecp.c
 2015-05-12 10:36:26 +02:00
Manuel Pégourié-Gonnard
7010e4688f Merge remote-tracking branch 'peterdettman/perf-ecp-double-jac' into mbedtls-1.3 
* peterdettman/perf-ecp-double-jac:
  Perf: rewrite of ecp_double_jac
 2015-05-11 20:26:47 +02:00
Manuel Pégourié-Gonnard
e3a062ba1f Rename ecp_use_known_dp -> mbedtls_ecp_group_load() 2015-05-11 18:46:47 +02:00
Manuel Pégourié-Gonnard
56cc88a796 Rm ecp_add() and add ecp_muladd() 2015-05-11 18:40:45 +02:00
Manuel Pégourié-Gonnard
6dde596a03 Remove ecp_sub() 2015-05-11 18:18:32 +02:00
Manuel Pégourié-Gonnard
aff37e5aa1 Remove ecp_group_read_string() 2015-05-11 18:11:57 +02:00
Manuel Pégourié-Gonnard
8408a94969 Remove MBEDTLS_ from internal macros 2015-04-09 13:52:55 +02:00
Manuel Pégourié-Gonnard
2cf5a7c98e The Great Renaming 
A simple execution of tmp/invoke-rename.pl
 2015-04-08 13:25:31 +02:00
Manuel Pégourié-Gonnard
998930ae0d Replace non-ascii characters in source files 2015-04-03 13:48:06 +02:00
Manuel Pégourié-Gonnard
7f8099773e Rename include directory to mbedtls 2015-03-10 11:23:56 +00:00
Manuel Pégourié-Gonnard
fe44643b0e Rename website and repository 2015-03-06 13:17:10 +00:00
Manuel Pégourié-Gonnard
981732bb8e Fix missing/misplaced #include's 2015-02-17 15:47:31 +00:00
Mansour Moufid
c531b4af3c Apply the semantic patch rm-malloc-cast.cocci. 
for dir in library programs; do
        spatch --sp-file scripts/rm-malloc-cast.cocci --dir $dir \
        --in-place;
    done
 2015-02-16 10:43:52 +00:00
Rich Evans
00ab47026b cleanup library and some basic tests. Includes, add guards to includes 2015-02-10 11:28:46 +00:00
Peter Dettman
ce661b2cb8 Perf: rewrite of ecp_double_jac 
- Improve optimization for special case A == -3.
- Add optimization for special case A == 0.
- Use alternative base formula, saving several additions.
- Reduce temp variables to 4 (from 6).
 2015-02-07 14:43:51 +07:00
Manuel Pégourié-Gonnard
860b51642d Fix url again 2015-01-28 17:12:07 +00:00
Manuel Pégourié-Gonnard
085ab040aa Fix website url to use https. 2015-01-23 11:06:27 +00:00
Manuel Pégourié-Gonnard
9698f5852c Remove maintainer line. 2015-01-23 10:59:00 +00:00
Manuel Pégourié-Gonnard
19f6b5dfaa Remove redundant "all rights reserved" 2015-01-23 10:54:00 +00:00
Manuel Pégourié-Gonnard
a658a4051b Update copyright 2015-01-23 09:55:24 +00:00
Manuel Pégourié-Gonnard
967a2a5f8c Change name to mbed TLS in the copyright notice 2015-01-22 14:28:16 +00:00
Manuel Pégourié-Gonnard
30668d688d Add ecp_check_pub_priv() 2014-11-06 18:25:51 +01:00
Paul Bakker
82788fb63b Fix minor style issues 2014-10-20 13:59:19 +02:00
Peter Vaskovic
a676acf66b Fix missing curly braces. 2014-08-21 17:56:25 +02:00
Manuel Pégourié-Gonnard
ba782bbc4b Save some space in ECP curve tables 2014-07-08 14:20:26 +02:00
Manuel Pégourié-Gonnard
67dbe1ef44 Better length checking in ecp_point_read_binary() 2014-07-08 14:20:26 +02:00
Paul Bakker
66d5d076f7 Fix formatting in various code to match spacing from coding style 2014-06-17 17:06:47 +02:00
Paul Bakker
d8bb82665e Fix code styling for return statements 2014-06-17 14:06:49 +02:00
Paul Bakker
3461772559 Introduce polarssl_zeroize() instead of memset() for zeroization 2014-06-14 16:46:03 +02:00
Paul Bakker
9af723cee7 Fix formatting: remove trailing spaces, #endif with comments (> 10 lines) 2014-05-01 13:03:14 +02:00
Manuel Pégourié-Gonnard
cef4ad2509 Adapt sources to configurable config.h name 2014-04-30 16:40:20 +02:00
Paul Bakker
3d8fb63e11 Added missing MPI_CHK around mpi functions 2014-04-17 12:42:41 +02:00
Manuel Pégourié-Gonnard
c042cf0013 Fix broken tests due to changed error code 
Introduced in 5246ee5c59
 2014-03-26 14:12:20 +01:00
Manuel Pégourié-Gonnard
5246ee5c59 Work around compressed EC public key in some cases 2014-03-19 16:50:59 +01:00
Manuel Pégourié-Gonnard
2a2ae642d8 Fix forgotten curves in #ifdef 2014-02-24 10:29:21 +01:00
Paul Bakker
7dc4c44267 Library files moved to use platform layer 2014-02-06 13:20:16 +01:00
Manuel Pégourié-Gonnard
ac7194133e Renamings and other fixes 2014-02-06 10:28:38 +01:00
Gergely Budai
e40c469ad3 The default ECDH curve list will be dynamically built in the ecp module based on ecp_supported_curves[]. 2014-02-06 10:28:38 +01:00
Manuel Pégourié-Gonnard
6e8e34d61e Fix ecp_gen_keypair() 
Too few tries caused failures for some curves (esp. secp224k1)
 2014-02-05 15:53:45 +01:00
Paul Bakker
bf98c3dd11 Merged deterministic ECDSA 
Conflicts:
	library/ecdsa.c
 2014-01-23 15:48:01 +01:00
Manuel Pégourié-Gonnard
9bcff3905b Add OIDs and TLS IDs for prime Koblitz curves 2014-01-10 18:32:31 +01:00
Manuel Pégourié-Gonnard
c9573998ca Fix unchecked error codes in ecp_gen_keypair() 2014-01-06 11:01:38 +01:00
Manuel Pégourié-Gonnard
79f73b96d9 Remove bias in EC private key generation 2014-01-06 10:19:35 +01:00
Paul Bakker
c73879139e Merged ECP memory usage optimizations 2013-12-31 10:33:47 +01:00
Manuel Pégourié-Gonnard
26bc1c0f5d Fix a few unchecked return codes in EC 2013-12-30 19:33:33 +01:00
Manuel Pégourié-Gonnard
9e4191c3e7 Add another option to reduce EC memory usage 
Also document speed/memory trade-offs better.
 2013-12-30 19:16:05 +01:00
Paul Bakker
ec4bea7eee Forced cast to unsigned int for %u format in ecp_selftest() 2013-12-30 19:04:47 +01:00
Manuel Pégourié-Gonnard
1f789b8348 Lessen peak memory usage in EC by freeing earlier 
Cuts peak usage by 25% :)
 2013-12-30 17:36:54 +01:00
Manuel Pégourié-Gonnard
72c172a13d Save some small memory allocations inside ecp_mul() 2013-12-30 16:04:55 +01:00
Paul Bakker
92bcadb110 Removed 'z' length modifier from low-value size_t in ecp_selftest() 2013-12-30 15:37:17 +01:00
Manuel Pégourié-Gonnard
1f82b041e7 Adapt ecp_group_free() to static constants 2013-12-17 11:27:20 +01:00
Manuel Pégourié-Gonnard
73cc01d7fa Remove last non-static parts of known EC groups 2013-12-17 11:27:20 +01:00
Manuel Pégourié-Gonnard
731d08b406 Start using constants from ROM for EC groups 2013-12-17 11:27:20 +01:00
Manuel Pégourié-Gonnard
93f41dbdfd Fix possible issue in corner-case for ecp_mul_mx() 2013-12-05 15:58:38 +01:00
Manuel Pégourié-Gonnard
7a949d3f5b Update comments 2013-12-05 15:58:38 +01:00
Manuel Pégourié-Gonnard
d962273594 Add #ifdef's for curve types 2013-12-05 15:58:38 +01:00
Manuel Pégourié-Gonnard
7c94d8bcab WIP #ifdef's 2013-12-05 15:58:38 +01:00
Manuel Pégourié-Gonnard
b6f45a616c Avoid potential leak in ecp_mul_mxz() 2013-12-05 15:58:38 +01:00
Manuel Pégourié-Gonnard
97871ef236 Some operations are not supported with Curve25519 2013-12-05 15:58:38 +01:00
Manuel Pégourié-Gonnard
357ff65a51 Details in ecp_mul_mxz() 2013-12-05 15:58:38 +01:00
Manuel Pégourié-Gonnard
fe0af405f9 Adapt ecp_gen_keypair() to Curve25519 2013-12-05 15:58:38 +01:00
Manuel Pégourié-Gonnard
a0179b8c4a Change ecp_mul to handle Curve25519 too 2013-12-05 15:58:38 +01:00
Manuel Pégourié-Gonnard
312d2e8ea2 Adapt key checking functions for Curve25519 2013-12-05 15:58:38 +01:00
Manuel Pégourié-Gonnard
3afa07f05b Add coordinate randomization for Curve25519 2013-12-05 15:58:37 +01:00
Manuel Pégourié-Gonnard
d9ea82e7d9 Add basic arithmetic for Curve25519 2013-12-05 15:58:37 +01:00
Manuel Pégourié-Gonnard
3c0b4ea97e Rename a few functions 2013-12-05 15:58:37 +01:00
Manuel Pégourié-Gonnard
d5e0fbe1a3 Remove now useless function 2013-12-02 17:20:39 +01:00
Manuel Pégourié-Gonnard
32b04c1237 Split ecp.c 2013-12-02 16:36:11 +01:00
Manuel Pégourié-Gonnard
43863eeffc Declare internal variables static in ecp.c 2013-12-02 16:34:24 +01:00
Manuel Pégourié-Gonnard
d35e191434 Drop useless include in ecp.c 2013-12-02 16:34:24 +01:00
Manuel Pégourié-Gonnard
0267e3dc9b Add ecp_curve_info_from_name() 2013-11-30 15:10:14 +01:00
Manuel Pégourié-Gonnard
104ee1d1f6 Add ecp_genkey(), prettier wrapper 2013-11-30 14:35:07 +01:00
Manuel Pégourié-Gonnard
c57b654a3e Use t_uint rather than uintXX_t when appropriate 2013-11-26 15:19:56 +01:00
Manuel Pégourié-Gonnard
96c7a92b08 Change mpi_safe_cond_assign() for more const-ness 2013-11-25 18:28:53 +01:00
Manuel Pégourié-Gonnard
918148193d Enhance ecp_selftest 2013-11-21 21:56:38 +01:00
Manuel Pégourié-Gonnard
d728350cee Make memory access pattern constant 2013-11-21 21:56:38 +01:00
Manuel Pégourié-Gonnard
aade42fd88 Change method for making M odd in ecp_mul() 
- faster
- avoids M >= N (if m = N-1 or N-2)
 2013-11-21 21:56:38 +01:00
Manuel Pégourié-Gonnard
36daa13d76 Misc details 2013-11-21 21:56:38 +01:00
Manuel Pégourié-Gonnard
469a209334 Rm subtraction from ecp_add_mixed() 2013-11-21 21:56:38 +01:00
Manuel Pégourié-Gonnard
01fca5e882 Do point inversion without leaking information 2013-11-21 21:56:38 +01:00
Manuel Pégourié-Gonnard
44aab79022 Update bibliographic references 2013-11-21 21:56:38 +01:00
Manuel Pégourié-Gonnard
7f762319ad Use mpi_shrink() in ecp_precompute() 2013-11-21 21:56:38 +01:00
Manuel Pégourié-Gonnard
e282012219 Spare some memory 2013-11-21 21:56:38 +01:00
Manuel Pégourié-Gonnard
edc1a1f482 Small code cleanups 2013-11-21 21:56:38 +01:00
Manuel Pégourié-Gonnard
ff27b7c968 Tighten ecp_mul() validity checks 2013-11-21 21:56:38 +01:00
Manuel Pégourié-Gonnard
09ceaf49d0 Rm multiplication using NAF 
Comb method is at most 1% slower for random points,
and is way faster for fixed point (repeated).
 2013-11-21 21:56:38 +01:00
Manuel Pégourié-Gonnard
04a0225388 Optimize w in the comb method 2013-11-21 21:56:37 +01:00
Manuel Pégourié-Gonnard
70c14372c6 Add coordinate randomization back 2013-11-21 21:56:37 +01:00
Manuel Pégourié-Gonnard
c30200e4ce Fix bound issues 2013-11-21 21:56:37 +01:00
Manuel Pégourié-Gonnard
101a39f55f Improve comb method (less precomputed points) 2013-11-21 21:56:37 +01:00
Manuel Pégourié-Gonnard
d1c1ba90ca First version of ecp_mul_comb() 2013-11-21 21:56:20 +01:00
Paul Bakker
6a6087e71d Added missing inline definition for MSCV and ARM environments 2013-10-28 18:53:08 +01:00
Manuel Pégourié-Gonnard
9fcceac943 Add a comment about modules coupling 2013-10-23 20:56:12 +02:00
Manuel Pégourié-Gonnard
b21c81fb41 Use less memory in fix_negative() 2013-10-23 20:45:04 +02:00
Manuel Pégourié-Gonnard
cae6f3ed45 Reorganize code in ecp.c 2013-10-23 20:19:57 +02:00
Manuel Pégourié-Gonnard
5779cbe582 Make mod_p{224,256,384] a bit faster 
Speedup is roughly 25%, giving a 6% speedup on ecp_mul() for these curves.
 2013-10-23 20:17:00 +02:00
Manuel Pégourié-Gonnard
c04c530a98 Make NIST curves optimisation an option 2013-10-23 16:11:52 +02:00
Manuel Pégourié-Gonnard
0f9149cb0a Add mod_p384 2013-10-23 15:06:37 +02:00
Manuel Pégourié-Gonnard
ec655c908c Add mod_p256 2013-10-23 14:50:39 +02:00
Manuel Pégourié-Gonnard
210b458ddc Document and slightly reorganize mod_pXXX 2013-10-23 14:27:58 +02:00
Manuel Pégourié-Gonnard
2a08c0debc mod_p224 now working with 8-bit and 16-bit ints 2013-10-23 13:24:55 +02:00
Manuel Pégourié-Gonnard
a47e7058ea mod_p224 now endian-neutral 2013-10-23 13:24:55 +02:00
Manuel Pégourié-Gonnard
e783f06f73 Start working on mod_p224 
(Prototype, works only on 32-bit and little-endian 64-bit.)
 2013-10-23 13:24:55 +02:00
Manuel Pégourié-Gonnard
cc67aee9c8 Make ecp_mod_p521 a bit faster 2013-10-23 13:24:55 +02:00
Manuel Pégourié-Gonnard
c9e387ca9e Optimize ecp_modp() 
Makes it 22% faster, for a 5% gain on ecp_mul()
 2013-10-23 13:24:55 +02:00
Manuel Pégourié-Gonnard
d1e7a45fdd Rework ecp_mod_p192() 
On x86_64, this makes it 5x faster, and ecp_mul() 17% faster for this curve.
The code is shorter too.
 2013-10-23 13:24:55 +02:00
Paul Bakker
b9cfaa0c7f Explicit conversions and minor changes to prevent MSVC compiler warnings 2013-10-14 15:50:40 +02:00
Manuel Pégourié-Gonnard
0cd6f98c0f Don't special-case a = -3, not worth it 2013-10-10 15:55:39 +02:00
Manuel Pégourié-Gonnard
b8012fca5f Adjust dependencies 2013-10-10 15:40:49 +02:00
Manuel Pégourié-Gonnard
0ace4b3154 Use much less variables in ecp_double_jac_gen() 2013-10-10 13:21:48 +02:00
Manuel Pégourié-Gonnard
1c4aa24df1 Add brainpool support for ecp_mul() 2013-10-10 12:56:00 +02:00
Manuel Pégourié-Gonnard
cd7458aafd Support brainpool curves in ecp_check_pubkey() 2013-10-10 12:56:00 +02:00
Manuel Pégourié-Gonnard
a070ada6d4 Add brainpool curves to ecp_use_kown_dp() 2013-10-10 12:56:00 +02:00
Manuel Pégourié-Gonnard
cec4a53c98 Add domain parameters for Brainpool curves 2013-10-10 12:56:00 +02:00
Manuel Pégourié-Gonnard
8195c1a567 Add identifiers for Brainpool curves 2013-10-10 12:56:00 +02:00
Manuel Pégourié-Gonnard
f24b4a7316 Interface change in ECP info functions 
ecp_named_curve_from_grp_id() -> ecp_curve_info_from_grp_id()
ecp_grp_id_from_named_curve() -> ecp_curve_info_from_tls_id()
 2013-09-24 21:25:53 +02:00
Manuel Pégourié-Gonnard
da179e4870 Add ecp_curve_list(), hide ecp_supported_curves 2013-09-18 15:37:44 +02:00
Manuel Pégourié-Gonnard
161ef968db Cache pre-computed points for ecp_mul() 
Up to 1.25 speedup on ECDSA sign for small curves, but mainly useful as a
preparation for fixed-point mult (a few prototypes changed in constness).
 2013-09-18 15:37:44 +02:00
Manuel Pégourié-Gonnard
56cd319f0e Add human-friendly name in ecp_curve_info 2013-09-18 15:37:44 +02:00
Manuel Pégourié-Gonnard
a79d123a55 Make ecp_supported_curves constant 2013-09-18 14:35:57 +02:00
Manuel Pégourié-Gonnard
c972770f78 Prepare ecp_group for future extensions 2013-09-18 14:35:53 +02:00
Manuel Pégourié-Gonnard
456d3b9b0b Make ECP error codes more specific 2013-09-18 14:35:53 +02:00
Manuel Pégourié-Gonnard
568c9cf878 Add ecp_supported_curves and simplify some code 2013-09-18 14:34:34 +02:00
Manuel Pégourié-Gonnard
7038039f2e Dissociate TLS and internal EC curve identifiers 
Allows to add new curves before they get a TLS number
 2013-09-18 14:34:34 +02:00
Manuel Pégourié-Gonnard
07de4b1d08 Implement randomized coordinates in ecp_mul() 2013-09-02 16:26:04 +02:00
Manuel Pégourié-Gonnard
e09d2f8261 Change ecp_mul() prototype to allow randomization 
(Also improve an error code while at it.)
 2013-09-02 14:29:09 +02:00
Manuel Pégourié-Gonnard
e09631b7c4 Create ecp_group_copy() and use it 2013-08-20 20:08:29 +02:00
Manuel Pégourié-Gonnard
b694b4896c Add ecdsa_{read,write}_signature() 2013-08-20 20:04:16 +02:00
Manuel Pégourié-Gonnard
96f3a4e1b3 Rm ecp_keypair.alg 
Avoid duplicating information already present in pk_context.
 2013-07-17 15:59:44 +02:00
Manuel Pégourié-Gonnard
de44a4aecf Rename ecp_check_prvkey with a 'i' for consistency 2013-07-09 16:42:34 +02:00
Manuel Pégourié-Gonnard
c8dc295e83 Add ecp_check_prvkey, with test 
Also group key checking and generation functions in ecp.h and ecp.c.
 2013-07-08 15:31:18 +02:00
Manuel Pégourié-Gonnard
b8c6e0e3e9 Add ecp_keypair struct, init/free and constants 2013-07-08 15:31:18 +02:00
Paul Bakker
6e339b52e8 Memory-allocation abstraction layer and buffer-based allocator added 2013-07-03 17:22:31 +02:00
Paul Bakker
fd3eac5786 Cleaned up ECP error codes 2013-06-29 23:31:33 +02:00
Paul Bakker
5dc6b5fb05 Made supported curves configurable 2013-06-29 23:26:34 +02:00
Paul Bakker
b6c5d2e1a6 Cleanup up non-prototyped functions (static) and const-correctness 
More fixes based on the compiler directives -Wcast-qual -Wwrite-strings
-Wmissing-prototypes -Wmissing-declarations. Not everything with regards
to -Wcast-qual has been fixed as some have unwanted consequences for the
rest of the code.
 2013-06-25 16:25:17 +02:00
Paul Bakker
a280d0f2b9 Fixed compiler warning for possible uninitialized ret 2013-04-08 13:40:17 +02:00
Manuel Pégourié-Gonnard
98f51815d6 Fix ecp_tls_read_point's signature 2013-02-10 13:38:29 +01:00
Manuel Pégourié-Gonnard
7c145c6418 Fix ecp_tls_read_group's signature 2013-02-10 13:20:52 +01:00
Manuel Pégourié-Gonnard
46106a9d75 Add tests for (and fix bug in) ecp_tls_write_group 2013-02-10 12:51:17 +01:00
Manuel Pégourié-Gonnard
420f1eb675 Fix ecp_tls_write_point's signature 2013-02-10 12:22:46 +01:00
Manuel Pégourié-Gonnard
b325887fad Add ecp_tls_write_group() 2013-02-10 12:06:19 +01:00
Manuel Pégourié-Gonnard
7e86025f32 Rename ecp_*_binary to ecp_point_*_binary 2013-02-10 10:58:48 +01:00
Manuel Pégourié-Gonnard
d84895dc22 Supress 'format' argument to ecp_read_binary. 
And adjust error codes for ecp_*_binary while at it.
 2013-02-10 10:53:04 +01:00
Manuel Pégourié-Gonnard
0079405918 Add functions for read/write ECPoint records 2013-02-09 19:00:07 +01:00
Manuel Pégourié-Gonnard
1a96728964 Add function parsing a TLS ECParameters record 2013-02-09 17:53:31 +01:00
Manuel Pégourié-Gonnard
6545ca7bed Add ECDH primitives 2013-01-26 19:11:24 +01:00
Manuel Pégourié-Gonnard
45a035a9ac Add ecp_gen_keypair() 2013-01-26 14:42:45 +01:00
Paul Bakker
cf4365f560 Updated error codes for ECP 2013-01-16 17:00:43 +01:00
Manuel Pégourié-Gonnard
5e402d88ea Added ecp_read_binary(). 2013-01-16 16:31:54 +01:00
Manuel Pégourié-Gonnard
37d218a8e3 Added support for writing points compressed 2013-01-16 16:31:54 +01:00
Manuel Pégourié-Gonnard
e19feb5b46 Added ecp_write_binary(). 2013-01-16 16:31:53 +01:00
Manuel Pégourié-Gonnard
1c33057a63 Added ecp_check_pubkey(). 2013-01-16 16:31:53 +01:00
Manuel Pégourié-Gonnard
3680c82c5a Made choice of w safer and more optimal 2013-01-16 16:31:53 +01:00
Manuel Pégourié-Gonnard
cdd44324e9 Added ecp_normalize_many() for faster precompute() 2013-01-16 16:31:53 +01:00
Manuel Pégourié-Gonnard
b63f9e98f5 Made ecp_mul() faster and truly SPA resistant 2013-01-16 16:31:53 +01:00
Manuel Pégourié-Gonnard
7652a593d6 Added a precompute() function for fast mult 2013-01-16 16:31:53 +01:00
Manuel Pégourié-Gonnard
855560758c Added function preparing for faster multiplication 2013-01-16 16:31:52 +01:00
Manuel Pégourié-Gonnard
b4a310b472 Added a selftest about SPA resistance 2013-01-16 16:31:52 +01:00
Manuel Pégourié-Gonnard
9674fd0d5e Added ecp_sub() as a variant of ecp_add() 2013-01-16 16:31:52 +01:00
Manuel Pégourié-Gonnard
1c2782cc7c Changed to jacobian coordinates everywhere 2013-01-16 16:31:52 +01:00
Manuel Pégourié-Gonnard
773ed546a2 Added a nbits member to ecp_group 2013-01-16 16:31:52 +01:00
Manuel Pégourié-Gonnard
4bdd47d2cb Multiplication by negative is now forbidden 2013-01-16 16:31:52 +01:00
Manuel Pégourié-Gonnard
8433824d5f Added fast mod_p192 2013-01-16 16:31:52 +01:00
Manuel Pégourié-Gonnard
4712325777 Clarifications in comments; code cosmetics & style 2013-01-16 16:31:52 +01:00
Manuel Pégourié-Gonnard
dada4da33f Moved domain paramaters to ecp.c 2013-01-16 16:31:51 +01:00
Manuel Pégourié-Gonnard
62aad14139 Added slot for fast modp, with mod_p521 2013-01-16 16:31:51 +01:00
Manuel Pégourié-Gonnard
84d1aea1ac Now reducing mod p after every single operation 2013-01-16 16:31:51 +01:00
Manuel Pégourié-Gonnard
e0c16922f9 Point multiplication using Jacobian coordinates 2013-01-16 16:31:51 +01:00
Manuel Pégourié-Gonnard
7e0adfbcc5 Replaced add_generic with add_mixed 2013-01-16 16:31:51 +01:00
Manuel Pégourié-Gonnard
989c32bc3e Replaced double_generic with double_jac 2013-01-16 16:31:51 +01:00
Manuel Pégourié-Gonnard
27b1ba8be0 Changed ecp_mul() to always add the same point 2013-01-16 16:31:51 +01:00
Manuel Pégourié-Gonnard
d070f51224 Started introducting Jacobian coordinates 2013-01-16 16:31:51 +01:00
Manuel Pégourié-Gonnard
4b8c3f2a1c Moved tests from selftest to tests/test_suite_ecp 2013-01-16 16:31:50 +01:00
Manuel Pégourié-Gonnard
a5402fee04 Added ecp_use_known_dp() 2013-01-16 16:31:50 +01:00
Manuel Pégourié-Gonnard
efaa31e9ae Implemented multiplication 2013-01-16 16:31:50 +01:00
Manuel Pégourié-Gonnard
b4ab8a8137 Fixed memory leak due to typo 2013-01-16 16:31:50 +01:00
Manuel Pégourié-Gonnard
de532ee73f Implemented generic doubling 2013-01-16 16:31:50 +01:00
Manuel Pégourié-Gonnard
ab38b70816 Fixed add_generic 2013-01-16 16:31:50 +01:00
Manuel Pégourié-Gonnard
b505c2796c Got first tests working, fixed ecp_copy() 2013-01-16 16:31:49 +01:00
Manuel Pégourié-Gonnard
d0dc6317e1 Added a few test cases for addition 2013-01-16 16:31:49 +01:00
Manuel Pégourié-Gonnard
847395a8a9 Added ecp_XXX_read_string() 2013-01-16 16:31:49 +01:00
Manuel Pégourié-Gonnard
7cfcea349c Documented error codes properly 2013-01-16 16:31:49 +01:00
Manuel Pégourié-Gonnard
ae180d0f20 Got started on ecp_add(): generic case done 2013-01-16 16:31:49 +01:00
Manuel Pégourié-Gonnard
883f313516 Added ecp_copy() (for points) 2013-01-16 16:31:49 +01:00
Manuel Pégourié-Gonnard
5179e463d5 Allowed point at infinity, supressed ecp_double() 2013-01-16 16:31:49 +01:00
Manuel Pégourié-Gonnard
1e8c8ecd95 Implemented ecp_{point,group}_free() 2013-01-16 16:31:49 +01:00
Manuel Pégourié-Gonnard
39d2adbbd0 Added (skeleton) ecp.[ch] 2013-01-16 16:31:48 +01:00