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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_cvt.c

/*
 * Copyright 2001-2018 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 <openssl/err.h>
#include "ec_local.h"

EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p, const BIGNUM *a,
                                 const BIGNUM *b, BN_CTX *ctx)
{
    const EC_METHOD *meth;
    EC_GROUP *ret;

#if defined(OPENSSL_BN_ASM_MONT)
    /*
     * This might appear controversial, but the fact is that generic
     * prime method was observed to deliver better performance even
     * for NIST primes on a range of platforms, e.g.: 60%-15%
     * improvement on IA-64, ~25% on ARM, 30%-90% on P4, 20%-25%
     * in 32-bit build and 35%--12% in 64-bit build on Core2...
     * Coefficients are relative to optimized bn_nist.c for most
     * intensive ECDSA verify and ECDH operations for 192- and 521-
     * bit keys respectively. Choice of these boundary values is
     * arguable, because the dependency of improvement coefficient
     * from key length is not a "monotone" curve. For example while
     * 571-bit result is 23% on ARM, 384-bit one is -1%. But it's
     * generally faster, sometimes "respectfully" faster, sometimes
     * "tolerably" slower... What effectively happens is that loop
     * with bn_mul_add_words is put against bn_mul_mont, and the
     * latter "wins" on short vectors. Correct solution should be
     * implementing dedicated NxN multiplication subroutines for
     * small N. But till it materializes, let's stick to generic
     * prime method...
     *                                              <appro>
     */
    meth = EC_GFp_mont_method();
#else
    if (BN_nist_mod_func(p))
        meth = EC_GFp_nist_method();
    else
        meth = EC_GFp_mont_method();
#endif

ret = EC_GROUP_new(meth);
    if (ret == NULL)
        return NULL;

if (!EC_GROUP_set_curve(ret, p, a, b, ctx)) {
        EC_GROUP_clear_free(ret);
        return NULL;
    }

return ret;
}

#ifndef OPENSSL_NO_EC2M
EC_GROUP *EC_GROUP_new_curve_GF2m(const BIGNUM *p, const BIGNUM *a,
                                  const BIGNUM *b, BN_CTX *ctx)
{
    const EC_METHOD *meth;
    EC_GROUP *ret;

meth = EC_GF2m_simple_method();

ret = EC_GROUP_new(meth);
    if (ret == NULL)
        return NULL;

if (!EC_GROUP_set_curve(ret, p, a, b, ctx)) {
        EC_GROUP_clear_free(ret);
        return NULL;
    }

return ret;
}
#endif

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Editing: ec_cvt.c

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