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usr / src / crypto / openssl / crypto / ec /

📁 ..
📁 asm
📄 build.info(1.9 KB)
📄 curve25519.c(196.91 KB)
📁 curve448
📄 ec2_oct.c(9.54 KB)
📄 ec2_smpl.c(26.61 KB)
📄 ec_ameth.c(25.42 KB)
📄 ec_asn1.c(39.39 KB)
📄 ec_check.c(1.89 KB)
📄 ec_curve.c(138.45 KB)
📄 ec_cvt.c(2.64 KB)
📄 ec_err.c(21.19 KB)
📄 ec_key.c(18.77 KB)
📄 ec_kmeth.c(10.35 KB)
📄 ec_lib.c(33.27 KB)
📄 ec_local.h(34.19 KB)
📄 ec_mult.c(30.58 KB)
📄 ec_oct.c(5.09 KB)
📄 ec_pmeth.c(12.34 KB)
📄 ec_print.c(2.86 KB)
📄 ecdh_kdf.c(2.36 KB)
📄 ecdh_ossl.c(3.26 KB)
📄 ecdsa_ossl.c(12.55 KB)
📄 ecdsa_sign.c(1.77 KB)
📄 ecdsa_vrf.c(1.25 KB)
📄 eck_prn.c(7.32 KB)
📄 ecp_mont.c(7.81 KB)
📄 ecp_nist.c(4.79 KB)
📄 ecp_nistp224.c(59.33 KB)
📄 ecp_nistp256.c(73.78 KB)
📄 ecp_nistp521.c(71.96 KB)
📄 ecp_nistputil.c(9.8 KB)
📄 ecp_nistz256.c(50.59 KB)
📄 ecp_nistz256_table.c(602.98 KB)
📄 ecp_oct.c(10.17 KB)
📄 ecp_smpl.c(48.07 KB)
📄 ecx_meth.c(20.65 KB)

Editing: ec_oct.c

/*
 * Copyright 2011-2018 The OpenSSL Project Authors. All Rights Reserved.
 * Copyright (c) 2002, Oracle and/or its affiliates. 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
 */

#include <string.h>

#include <openssl/err.h>
#include <openssl/opensslv.h>

#include "ec_local.h"

int EC_POINT_set_compressed_coordinates(const EC_GROUP *group, EC_POINT *point,
                                        const BIGNUM *x, int y_bit, BN_CTX *ctx)
{
    if (group->meth->point_set_compressed_coordinates == NULL
        && !(group->meth->flags & EC_FLAGS_DEFAULT_OCT)) {
        ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES,
              ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
        return 0;
    }
    if (!ec_point_is_compat(point, group)) {
        ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES,
              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,
                  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);
}

#if OPENSSL_API_COMPAT < 0x10200000L
int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group,
                                            EC_POINT *point, const BIGNUM *x,
                                            int y_bit, BN_CTX *ctx)
{
    return EC_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)
{
    return EC_POINT_set_compressed_coordinates(group, point, x, y_bit, ctx);
}
# endif
#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 (!ec_point_is_compat(point, group)) {
        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 (!ec_point_is_compat(point, group)) {
        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;
    if ((buf = OPENSSL_malloc(len)) == NULL) {
        ECerr(EC_F_EC_POINT_POINT2BUF, ERR_R_MALLOC_FAILURE);
        return 0;
    }
    len = EC_POINT_point2oct(group, point, form, buf, len, ctx);
    if (len == 0) {
        OPENSSL_free(buf);
        return 0;
    }
    *pbuf = buf;
    return len;
}

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Editing: ec_oct.c

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