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114 commits

Author SHA1 Message Date
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