diff options
Diffstat (limited to 'openssl-1.1.0h/crypto/ec/ec_oct.c')
| -rw-r--r-- | openssl-1.1.0h/crypto/ec/ec_oct.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/openssl-1.1.0h/crypto/ec/ec_oct.c b/openssl-1.1.0h/crypto/ec/ec_oct.c new file mode 100644 index 0000000..effc42a --- /dev/null +++ b/openssl-1.1.0h/crypto/ec/ec_oct.c @@ -0,0 +1,165 @@ +/* + * Copyright 2011-2016 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +/* ==================================================================== + * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. + * Binary polynomial ECC support in OpenSSL originally developed by + * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. + */ + +#include <string.h> + +#include <openssl/err.h> +#include <openssl/opensslv.h> + +#include "ec_lcl.h" + +int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group, + EC_POINT *point, const BIGNUM *x, + int y_bit, BN_CTX *ctx) +{ + if (group->meth->point_set_compressed_coordinates == 0 + && !(group->meth->flags & EC_FLAGS_DEFAULT_OCT)) { + ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP, + ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + if (group->meth != point->meth) { + ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP, + EC_R_INCOMPATIBLE_OBJECTS); + return 0; + } + if (group->meth->flags & EC_FLAGS_DEFAULT_OCT) { + if (group->meth->field_type == NID_X9_62_prime_field) + return ec_GFp_simple_set_compressed_coordinates(group, point, x, + y_bit, ctx); + else +#ifdef OPENSSL_NO_EC2M + { + ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP, + EC_R_GF2M_NOT_SUPPORTED); + return 0; + } +#else + return ec_GF2m_simple_set_compressed_coordinates(group, point, x, + y_bit, ctx); +#endif + } + return group->meth->point_set_compressed_coordinates(group, point, x, + y_bit, ctx); +} + +#ifndef OPENSSL_NO_EC2M +int EC_POINT_set_compressed_coordinates_GF2m(const EC_GROUP *group, + EC_POINT *point, const BIGNUM *x, + int y_bit, BN_CTX *ctx) +{ + if (group->meth->point_set_compressed_coordinates == 0 + && !(group->meth->flags & EC_FLAGS_DEFAULT_OCT)) { + ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GF2M, + ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + if (group->meth != point->meth) { + ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GF2M, + EC_R_INCOMPATIBLE_OBJECTS); + return 0; + } + if (group->meth->flags & EC_FLAGS_DEFAULT_OCT) { + if (group->meth->field_type == NID_X9_62_prime_field) + return ec_GFp_simple_set_compressed_coordinates(group, point, x, + y_bit, ctx); + else + return ec_GF2m_simple_set_compressed_coordinates(group, point, x, + y_bit, ctx); + } + return group->meth->point_set_compressed_coordinates(group, point, x, + y_bit, ctx); +} +#endif + +size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *point, + point_conversion_form_t form, unsigned char *buf, + size_t len, BN_CTX *ctx) +{ + if (group->meth->point2oct == 0 + && !(group->meth->flags & EC_FLAGS_DEFAULT_OCT)) { + ECerr(EC_F_EC_POINT_POINT2OCT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + if (group->meth != point->meth) { + ECerr(EC_F_EC_POINT_POINT2OCT, EC_R_INCOMPATIBLE_OBJECTS); + return 0; + } + if (group->meth->flags & EC_FLAGS_DEFAULT_OCT) { + if (group->meth->field_type == NID_X9_62_prime_field) + return ec_GFp_simple_point2oct(group, point, form, buf, len, ctx); + else +#ifdef OPENSSL_NO_EC2M + { + ECerr(EC_F_EC_POINT_POINT2OCT, EC_R_GF2M_NOT_SUPPORTED); + return 0; + } +#else + return ec_GF2m_simple_point2oct(group, point, + form, buf, len, ctx); +#endif + } + + return group->meth->point2oct(group, point, form, buf, len, ctx); +} + +int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *point, + const unsigned char *buf, size_t len, BN_CTX *ctx) +{ + if (group->meth->oct2point == 0 + && !(group->meth->flags & EC_FLAGS_DEFAULT_OCT)) { + ECerr(EC_F_EC_POINT_OCT2POINT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + if (group->meth != point->meth) { + ECerr(EC_F_EC_POINT_OCT2POINT, EC_R_INCOMPATIBLE_OBJECTS); + return 0; + } + if (group->meth->flags & EC_FLAGS_DEFAULT_OCT) { + if (group->meth->field_type == NID_X9_62_prime_field) + return ec_GFp_simple_oct2point(group, point, buf, len, ctx); + else +#ifdef OPENSSL_NO_EC2M + { + ECerr(EC_F_EC_POINT_OCT2POINT, EC_R_GF2M_NOT_SUPPORTED); + return 0; + } +#else + return ec_GF2m_simple_oct2point(group, point, buf, len, ctx); +#endif + } + return group->meth->oct2point(group, point, buf, len, ctx); +} + +size_t EC_POINT_point2buf(const EC_GROUP *group, const EC_POINT *point, + point_conversion_form_t form, + unsigned char **pbuf, BN_CTX *ctx) +{ + size_t len; + unsigned char *buf; + len = EC_POINT_point2oct(group, point, form, NULL, 0, NULL); + if (len == 0) + return 0; + buf = OPENSSL_malloc(len); + if (buf == NULL) + return 0; + len = EC_POINT_point2oct(group, point, form, buf, len, ctx); + if (len == 0) { + OPENSSL_free(buf); + return 0; + } + *pbuf = buf; + return len; +} |