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path: root/crypto/ec/ec2_oct.c
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2021-05-13Replace some of the ERR_clear_error() calls with mark callsTomas Mraz
Fixes #15219 Reviewed-by: Richard Levitte <levitte@openssl.org> Reviewed-by: Paul Dale <pauli@openssl.org> Reviewed-by: Shane Lontis <shane.lontis@oracle.com> (Merged from https://github.com/openssl/openssl/pull/15253)
2021-05-09Avoid division by zero in hybrid point encodingTheo Buehler
In hybrid and compressed point encodings, the form octet contains a bit of information allowing to calculate y from x. For a point on a binary curve, this bit is zero if x is zero, otherwise it must match the rightmost bit of of the field element y / x. The existing code only considers the second possibility. It could thus incorrecly fail with a division by zero error as found by Guido Vranken's cryptofuzz. This commit adds a few explanatory comments to oct2point. The only actual code change is in the last hunk which adds a BN_is_zero(x) check to avoid the division by zero. Fixes #15021 Reviewed-by: Nicola Tuveri <nic.tuv@gmail.com> Reviewed-by: Tomas Mraz <tomas@openssl.org> (Merged from https://github.com/openssl/openssl/pull/15108)
2021-03-11Update copyright yearMatt Caswell
Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/14512)
2021-02-26Fix external symbols related to ec & sm2 keysShane Lontis
Partial fix for #12964 This adds ossl_ names for the following symbols: ec_*, ecx_*, ecdh_*, ecdsa_*, sm2_* Reviewed-by: Paul Dale <pauli@openssl.org> (Merged from https://github.com/openssl/openssl/pull/14231)
2020-11-13Convert all {NAME}err() in crypto/ to their corresponding ERR_raise() callRichard Levitte
This includes error reporting for libcrypto sub-libraries in surprising places. This was done using util/err-to-raise Reviewed-by: Paul Dale <paul.dale@oracle.com> (Merged from https://github.com/openssl/openssl/pull/13318)
2020-04-28Rename FIPS_MODE to FIPS_MODULERichard Levitte
This macro is used to determine if certain pieces of code should become part of the FIPS module or not. The old name was confusing. Fixes #11538 Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org> (Merged from https://github.com/openssl/openssl/pull/11539)
2020-04-23Update copyright yearMatt Caswell
Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/11616)
2020-02-04Deprecate the ECDSA and EV_KEY_METHOD functions.Pauli
Use of the low level ECDSA and EC_KEY_METHOD functions has been informally discouraged for a long time. We now formally deprecate them. Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/10960)
2019-09-28Reorganize local header filesDr. Matthias St. Pierre
Apart from public and internal header files, there is a third type called local header files, which are located next to source files in the source directory. Currently, they have different suffixes like '*_lcl.h', '*_local.h', or '*_int.h' This commit changes the different suffixes to '*_local.h' uniformly. Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/9333)
2019-08-06Make the EC code available from inside the FIPS providerMatt Caswell
Reviewed-by: Nicola Tuveri <nic.tuv@gmail.com> (Merged from https://github.com/openssl/openssl/pull/9380)
2019-03-30fixed public range check in ec_GF2m_simple_oct2pointShane Lontis
Reviewed-by: Matt Caswell <matt@openssl.org> Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de> (Merged from https://github.com/openssl/openssl/pull/8607)
2018-12-06Following the license change, modify the boilerplates in crypto/ec/Richard Levitte
[skip ci] Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/7791)
2018-09-11Update copyright yearMatt Caswell
Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/7176)
2018-07-31Use the new non-curve type specific EC functions internallyMatt Caswell
Fixes #6646 Reviewed-by: Rich Salz <rsalz@openssl.org> (Merged from https://github.com/openssl/openssl/pull/6815)
2017-06-20Modify Sun copyright to follow OpenSSL styleRich Salz
Approved by Oracle. Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de> (Merged from https://github.com/openssl/openssl/pull/3585)
2016-06-09RT 4242: reject invalid EC point coordinatesEmilia Kasper
We already test in EC_POINT_oct2point that points are on the curve. To be on the safe side, move this check to EC_POINT_set_affine_coordinates_* so as to also check point coordinates received through some other method. We do not check projective coordinates, though, as - it's unlikely that applications would be receiving this primarily internal representation from untrusted sources, and - it's possible that the projective setters are used in a setting where performance matters. Reviewed-by: Rich Salz <rsalz@openssl.org>
2016-05-17Copyright consolidation 05/10Rich Salz
Reviewed-by: Richard Levitte <levitte@openssl.org>
2016-01-26Remove /* foo.c */ commentsRich Salz
This was done by the following find . -name '*.[ch]' | /tmp/pl where /tmp/pl is the following three-line script: print unless $. == 1 && m@/\* .*\.[ch] \*/@; close ARGV if eof; # Close file to reset $. And then some hand-editing of other files. Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
2015-06-10EC_POINT_is_on_curve does not return a booleanMatt Caswell
The function EC_POINT_is_on_curve does not return a boolean value. It returns 1 if the point is on the curve, 0 if it is not, and -1 on error. Many usages within OpenSSL were incorrectly using this function and therefore not correctly handling error conditions. With thanks to the Open Crypto Audit Project for reporting this issue. Reviewed-by: Kurt Roeckx <kurt@openssl.org>
2015-04-30free NULL cleanup 7Rich Salz
This gets BN_.*free: BN_BLINDING_free BN_CTX_free BN_FLG_FREE BN_GENCB_free BN_MONT_CTX_free BN_RECP_CTX_free BN_clear_free BN_free BUF_MEM_free Also fix a call to DSA_SIG_free to ccgost engine and remove some #ifdef'd dead code in engines/e_ubsec. Reviewed-by: Richard Levitte <levitte@openssl.org>
2015-01-22Run util/openssl-format-source -v -c .Matt Caswell
Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-01-22Move more comments that confuse indentMatt Caswell
Reviewed-by: Tim Hudson <tjh@openssl.org>
2015-01-06Further comment amendments to preserve formatting prior to source reformatMatt Caswell
Reviewed-by: Tim Hudson <tjh@openssl.org>
2014-12-08Implement internally opaque bn access from ecMatt Caswell
Reviewed-by: Tim Hudson <tjh@openssl.org>
2011-02-14Don't use FIPS api for ec2_oct.cDr. Stephen Henson
2011-02-14Reorganise ECC code for inclusion in FIPS module.Dr. Stephen Henson
Move compression, point2oct and oct2point functions into separate files. Add a flags field to EC_METHOD. Add a flag EC_FLAGS_DEFAULT_OCT to use the default compession and oct functions (all existing methods do this). This removes dependencies from EC_METHOD while keeping original functionality.