Dr. Stephen Henson
6056afd223
PR: 1612
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Submitted by: Robert Jackson <robert@rjsweb.net>
Reviewed by: steve
Fix EC_POINT_cmp function for case where b but not a is the point at infinity.
2011-01-24 14:42:11 +00:00
Nils Larsch
b7a80146f4
fix error found by coverity: check if ctx is != NULL before calling BN_CTX_end()
2006-03-13 23:12:08 +00:00
Nils Larsch
ff22e913a3
- use BN_set_negative and BN_is_negative instead of BN_set_sign
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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
Geoff Thorpe
7f5b4dd1e8
Using Horner's algorithm to evaluate the ec polynomial
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(suggested by Adam Young <ayoung@cigital.com>)
Submitted by: Nils Larsch
2004-07-16 03:24:19 +00:00
Geoff Thorpe
ace3ebd661
Improve error handling if decompression of an ec point fails, and cleanup
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ec_curve.c (unify comments, etc).
Submitted by: Nils Larsch
Reviewed by: Bodo Moeller, Geoff Thorpe
2004-07-06 15:50:04 +00:00
Richard Levitte
560f7abb7e
Make sure we use unsigned constants, or come compilers may complain.
2004-03-15 22:33:19 +00:00
Geoff Thorpe
b6358c89a1
Convert openssl code not to assume the deprecated form of BN_zero().
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Remove certain redundant BN_zero() initialisations, because BN_CTX_get(),
BN_init(), [etc] already initialise to zero.
Correct error checking in bn_sqr.c, and be less wishy-wash about how/why
the result's 'top' value is set (note also, 'max' is always > 0 at this
point).
2004-03-13 23:57:20 +00:00
Bodo Möller
37c660ff9b
implement fast point multiplication with precomputation
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Submitted by: Nils Larsch
Reviewed by: Bodo Moeller
2003-02-06 19:25:12 +00:00
Bodo Möller
922fa76e26
add a comment
2002-11-22 09:25:35 +00:00
Bodo Möller
137445140b
Make ec_GFp_simple_point_get_affine_coordinates() faster
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for Montgomery representations.
Submitted by: Sheueling Chang, Bodo Moeller
2002-11-20 10:53:33 +00:00
Bodo Möller
b53e44e572
implement and use new macros BN_get_sign(), BN_set_sign()
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Submitted by: Nils Larsch
2002-11-04 13:17:22 +00:00
Bodo Möller
6fb60a84dd
Change BN_mod_sqrt() so that it verifies that the input value is
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really the square of the return value.
2002-08-02 14:57:53 +00:00
Bodo Möller
35b73a1f20
Rename implementations of method functions so that they match
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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
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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
458c29175e
move ECC ASN1 that is not specific to ECDSA into crypto/ec/,
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and make some appropriate changes to the EC library.
Submitted by: Nils Larsch
2002-06-10 12:18:21 +00:00
Richard Levitte
02cbedc387
Make sure short aliases are used where required.
2002-05-23 13:52:36 +00:00
Bodo Möller
b6db386ffd
Change internals of the EC library so that the functions
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EC_GROUP_{set_generator,get_generator,get_order,get_cofactor} are
implemented directly in crypto/ec/ec_lib.c and not dispatched to
methods.
Also fix EC_GROUP_copy to copy the NID.
2002-05-08 11:54:24 +00:00
Bodo Möller
17d6bb8158
New function EC_GROUP_check_discriminant().
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Restructure implementation of EC_GROUP_check().
Submitted by: Nils Larsch
2002-03-20 10:18:07 +00:00
Bodo Möller
af28dd6c75
Fix bugs and typos.
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Add some WTLS curves.
New function EC_GROUP_check() (this will probably
be implemented differently soon).
Submitted by: Nils Larsch
Reviewed by: Bodo Moeller
2002-03-18 13:10:45 +00:00
Richard Levitte
1f0af2c073
len is a size_t, which is an unsigned integer. Therefore, some
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compilers will complain against the check for less than zero.
2001-05-14 11:56:47 +00:00
Bodo Möller
48fe4d6233
More EC stuff, including EC_POINTs_mul() for simultaneous scalar
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multiplication of an arbitrary number of points.
2001-03-10 23:18:35 +00:00
Bodo Möller
42909e3968
Fix ec_GFp_simple_cmp.
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Use example group from Annex I of X9.62 in ectest.c.
2001-03-08 22:52:49 +00:00
Bodo Möller
156e85578d
Implement EC_GFp_mont_method.
2001-03-08 20:55:16 +00:00
Bodo Möller
bb62a8b0c5
More method functions for elliptic curves,
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and an ectest.c that actually tests something.
2001-03-08 19:14:52 +00:00
Bodo Möller
1d5bd6cf71
More 'TODO' items.
2001-03-08 11:16:33 +00:00
Bodo Möller
226cc7ded4
More method functions for EC_GFp_simple_method.
2001-03-08 01:23:28 +00:00
Bodo Möller
e869d4bd32
More method functions.
2001-03-07 20:56:48 +00:00
Bodo Möller
60428dbf0a
Some actual method functions (not enough yet to use the EC library, though),
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including EC arithmetics derived from Lenka Fibikova's code (with some
additional optimizations).
2001-03-07 19:54:35 +00:00
Bodo Möller
58fc62296f
The next bunch of vaporware.
2001-03-07 09:29:45 +00:00
Bodo Möller
0657bf9c14
Implement dispatcher for EC_GROUP and EC_POINT method functions.
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Initial EC_GROUP_new_curve_GFp implementation.
2001-03-07 01:17:05 +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
f8fe20e0d9
Add more EC vaporware (empty source code files I missed in my
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previous commit).
2001-03-05 20:14:00 +00:00