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37 commits

Author SHA1 Message Date
Bodo Möller
82281ce47d ECC library bugfixes. 
Submitted by: Emilia Kapser (Google)
 2010-08-26 12:10:57 +00:00
Andy Polyakov
27c7e53882 ec_mult.c: update from HEAD (Win64 compile warnings). 2009-05-05 19:23:45 +00:00
Ben Laurie
57a6ac7c4f Check scalar->d before we use it (in BN_num_bits()). (Coverity ID 129) 2008-12-27 02:15:16 +00:00
Bodo Möller
19f6c524bf Fix crypto/ec/ec_mult.c to work properly with scalars of value 0 2007-05-22 09:47:43 +00:00
Nils Larsch
eeb821f707 fix error found by coverity: check if ctx is != NULL before calling BN_CTX_end() 2006-03-14 22:48:41 +00:00
Nils Larsch
9dd8405341 ecc api cleanup; summary: 
- hide the EC_KEY structure definition in ec_lcl.c + add
  some functions to use/access the EC_KEY fields
- change the way how method specific data (ecdsa/ecdh) is
  attached to a EC_KEY
- add ECDSA_sign_ex and ECDSA_do_sign_ex functions with
  additional parameters for pre-computed values
- rebuild libeay.num from 0.9.7
 2005-05-16 10:11:04 +00:00
Nils Larsch
ff22e913a3 - use BN_set_negative and BN_is_negative instead of BN_set_sign 
and BN_get_sign
- implement BN_set_negative as a function
- always use "#define BN_is_zero(a) ((a)->top == 0)"
 2005-04-22 20:02:44 +00:00
Richard Levitte
513c01a591 Make sure EC_window_bits_for_scalar_size() returns a size_t 2003-05-21 08:40:06 +00:00
Bodo Möller
ba729265a8 Allow EC_GROUP objects to share precomputation for improved memory 
efficiency (EC_PRE_COMP objects are now constant once completed).

Extend 'extra_data' API to support arbitrarily many slots (although we
need only one at the moment).

Modify EC internal 'extra_data' API: EC_GROUP_[clear_]free_extra_data
now frees only a single slot (the previous functions are available as
EC_GROUP_[clear_]free_all_extra_data).

Submitted by: Nils Larsch
Reviewed by: Bodo Moeller
 2003-02-12 18:30:16 +00:00
Richard Levitte
28f573a28d Make sure memcpy() is properly declared by including string.h. 2003-02-10 11:14:35 +00:00
Bodo Möller
65b254e8c0 remove debugging leftovers 2003-02-08 15:56:05 +00:00
Bodo Möller
82871eaa17 comment 2003-02-07 11:54:57 +00:00
Bodo Möller
37c660ff9b implement fast point multiplication with precomputation 
Submitted by: Nils Larsch
Reviewed by: Bodo Moeller
 2003-02-06 19:25:12 +00:00
Bodo Möller
b53e44e572 implement and use new macros BN_get_sign(), BN_set_sign() 
Submitted by: Nils Larsch
 2002-11-04 13:17:22 +00:00
Bodo Möller
35b73a1f20 Rename implementations of method functions so that they match 
the new method names where _GF... suffixes have been removed.

Revert changes to ..._{get/set}_Jprojective_coordinates_...:
The current implementation for ECC over binary fields does not use
projective coordinates, and if it did, it would not use Jacobian
projective coordinates; so it's OK to use the ..._GFp prefix for all
this.

Add author attributions to some files so that it doesn't look
as if Sun wrote all of this :-)
 2002-08-02 14:28:37 +00:00
Bodo Möller
7793f30e09 add support for elliptic curves over binary fields 
Submitted by: Duglas Stebila <douglas.stebila@sun.com>,
              Sheueling Chang <sheueling.chang@sun.com>

(CHANGES entries by Bodo Moeller)
 2002-08-02 13:42:24 +00:00
Bodo Möller
2c8d0dccfc improve wNAF generation 2002-05-05 23:45:09 +00:00
Bodo Möller
f916052eab remove disabled code 2002-04-14 13:28:17 +00:00
Bodo Möller
d009bcbfb6 bugfix: allocate sufficiently large buffer 
Submitted by: Nils Larsch
 2002-02-20 11:59:42 +00:00
Richard Levitte
b77fcddb6b Apply a small patch from Oscar Jacobsson <oscar@jacobsson.org> that 
makes things more compilable with VC++.
 2002-01-26 04:50:41 +00:00
Bodo Möller
c05940edc7 comment 2001-11-22 11:08:38 +00:00
Bodo Möller
e71adb85c5 avoid stupid compiler warning 2001-11-16 11:37:36 +00:00
Bodo Möller
b19941ab05 comment 2001-11-16 06:22:21 +00:00
Bodo Möller
c78515f55e comments etc. 2001-11-15 22:35:41 +00:00
Bodo Möller
3ba1f11147 Improve EC efficiency. 2001-11-15 22:32:11 +00:00
Bodo Möller
56a106115f comment change 2001-07-10 11:28:53 +00:00
Bodo Möller
e3a4f8b84c Precomputation will not necessarily be LIm-Lee precomputation. 2001-07-10 10:04:05 +00:00
Bodo Möller
413a4a0461 Fix warnings. 2001-04-03 14:03:47 +00:00
Bodo Möller
26fbabf3d1 Increase boundaries in EC_window_bits_for_scalar_size table. 2001-03-20 11:16:12 +00:00
Bodo Möller
37cdcb4d8a Table for window sizes. 2001-03-19 22:38:24 +00:00
Bodo Möller
194dd04699 Rename function EC_GROUP_precompute to EC_GROUP_precompute_mult, 
which indicate its purpose more clearly.
 2001-03-12 07:26:23 +00:00
Bodo Möller
3837491174 Add functions EC_POINT_mul and EC_GROUP_precompute. 
The latter does nothing for now, but its existence means
that applications can request precomputation when appropriate.
 2001-03-11 12:27:24 +00:00
Bodo Möller
86a921af06 handle negative scalars correctly when doing point multiplication 2001-03-11 08:44:50 +00:00
Bodo Möller
6f8f443170 comment and error code update 2001-03-10 23:37:52 +00:00
Bodo Möller
48fe4d6233 More EC stuff, including EC_POINTs_mul() for simultaneous scalar 
multiplication of an arbitrary number of points.
 2001-03-10 23:18:35 +00:00
Bodo Möller
38e3c5815c Add yet another (still empty) source code file that I forgot. 2001-03-05 20:31:49 +00:00
Bodo Möller
65e8167079 Move ec.h to ec2.h because it is not compatible with what we will use. 
Add EC vaporware: change relevant Makefiles and add some empty source
files.

"make update".
 2001-03-05 20:13:37 +00:00