add support for named curves

Submitted by: Nils Larsch <nla@trustcenter.de>
This commit is contained in:
Bodo Möller 2002-02-13 17:22:59 +00:00
parent 1fe198b6f9
commit 945e15a253
6 changed files with 358 additions and 8 deletions

View File

@ -24,10 +24,10 @@ APPS=
LIB=$(TOP)/libcrypto.a
LIBSRC= ec_lib.c ecp_smpl.c ecp_mont.c ecp_recp.c ecp_nist.c ec_cvt.c ec_mult.c \
ec_err.c
ec_err.c ec_curve.c
LIBOBJ= ec_lib.o ecp_smpl.o ecp_mont.o ecp_recp.o ecp_nist.o ec_cvt.o ec_mult.o \
ec_err.o
ec_err.o ec_curve.o
SRC= $(LIBSRC)
@ -82,6 +82,15 @@ clean:
# DO NOT DELETE THIS LINE -- make depend depends on it.
ec_curve.o: ../../include/openssl/asn1.h ../../include/openssl/asn1t.h
ec_curve.o: ../../include/openssl/bio.h ../../include/openssl/bn.h
ec_curve.o: ../../include/openssl/crypto.h ../../include/openssl/e_os2.h
ec_curve.o: ../../include/openssl/ec.h ../../include/openssl/err.h
ec_curve.o: ../../include/openssl/lhash.h ../../include/openssl/obj_mac.h
ec_curve.o: ../../include/openssl/opensslconf.h
ec_curve.o: ../../include/openssl/opensslv.h ../../include/openssl/ossl_typ.h
ec_curve.o: ../../include/openssl/safestack.h ../../include/openssl/stack.h
ec_curve.o: ../../include/openssl/symhacks.h ec_curve.c ec_lcl.h
ec_cvt.o: ../../include/openssl/bn.h ../../include/openssl/e_os2.h
ec_cvt.o: ../../include/openssl/ec.h ../../include/openssl/opensslconf.h
ec_cvt.o: ../../include/openssl/symhacks.h ec_cvt.c ec_lcl.h

View File

@ -107,8 +107,11 @@ void EC_GROUP_free(EC_GROUP *);
void EC_GROUP_clear_free(EC_GROUP *);
int EC_GROUP_copy(EC_GROUP *, const EC_GROUP *);
void EC_GROUP_set_nid(EC_GROUP *, int);
int EC_GROUP_get_nid(const EC_GROUP *);
const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *);
/* We don't have types for field specifications and field elements in general.
* Otherwise we could declare
@ -117,15 +120,36 @@ const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *);
int EC_GROUP_set_curve_GFp(EC_GROUP *, const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *);
int EC_GROUP_get_curve_GFp(const EC_GROUP *, BIGNUM *p, BIGNUM *a, BIGNUM *b, BN_CTX *);
/* EC_GROUP_new_GFp() calls EC_GROUP_new() and EC_GROUP_set_GFp()
* after choosing an appropriate EC_METHOD */
EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *);
int EC_GROUP_set_generator(EC_GROUP *, const EC_POINT *generator, const BIGNUM *order, const BIGNUM *cofactor);
EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *);
int EC_GROUP_get_order(const EC_GROUP *, BIGNUM *order, BN_CTX *);
int EC_GROUP_get_cofactor(const EC_GROUP *, BIGNUM *cofactor, BN_CTX *);
/* EC_GROUP_new_GFp() calls EC_GROUP_new() and EC_GROUP_set_GFp()
* after choosing an appropriate EC_METHOD */
EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *);
EC_GROUP *EC_GROUP_get_group_by_name(int name);
/* Valid arguments to EC_GROUP_get_group_by_name(): */
#define EC_GROUP_NO_CURVE 0
#define EC_GROUP_NIST_PRIME_192 1
#define EC_GROUP_NIST_PRIME_224 2
#define EC_GROUP_NIST_PRIME_256 3
#define EC_GROUP_NIST_PRIME_384 4
#define EC_GROUP_NIST_PRIME_521 5
#define EC_GROUP_X9_62_PRIME_192V1 NID_X9_62_prime192v1
#define EC_GROUP_X9_62_PRIME_192V2 NID_X9_62_prime192v2
#define EC_GROUP_X9_62_PRIME_192V3 NID_X9_62_prime192v3
#define EC_GROUP_X9_62_PRIME_239V1 NID_X9_62_prime239v1
#define EC_GROUP_X9_62_PRIME_239V2 NID_X9_62_prime239v2
#define EC_GROUP_X9_62_PRIME_239V3 NID_X9_62_prime239v3
#define EC_GROUP_X9_62_PRIME_256V1 NID_X9_62_prime256v1
EC_GROUP *EC_GROUP_nid2group(const int nid);
int EC_GROUP_group2nid(const EC_GROUP *group);
EC_POINT *EC_POINT_new(const EC_GROUP *);
void EC_POINT_free(EC_POINT *);
void EC_POINT_clear_free(EC_POINT *);
@ -196,12 +220,16 @@ void ERR_load_EC_strings(void);
#define EC_F_EC_GROUP_GET_COFACTOR 140
#define EC_F_EC_GROUP_GET_CURVE_GFP 130
#define EC_F_EC_GROUP_GET_EXTRA_DATA 107
#define EC_F_EC_GROUP_GET_GROUP_BY_NAME 144
#define EC_F_EC_GROUP_GET_ORDER 141
#define EC_F_EC_GROUP_GROUP2NID 145
#define EC_F_EC_GROUP_NEW 108
#define EC_F_EC_GROUP_NID2GROUP 146
#define EC_F_EC_GROUP_PRECOMPUTE_MULT 142
#define EC_F_EC_GROUP_SET_CURVE_GFP 109
#define EC_F_EC_GROUP_SET_EXTRA_DATA 110
#define EC_F_EC_GROUP_SET_GENERATOR 111
#define EC_F_EC_GROUP_SET_PRIME_GROUP 147
#define EC_F_EC_POINTS_MAKE_AFFINE 136
#define EC_F_EC_POINTS_MUL 138
#define EC_F_EC_POINT_ADD 112
@ -231,12 +259,15 @@ void ERR_load_EC_strings(void);
#define EC_R_INVALID_ENCODING 102
#define EC_R_INVALID_FIELD 103
#define EC_R_INVALID_FORM 104
#define EC_R_MISSING_PARAMETERS 115
#define EC_R_NOT_INITIALIZED 111
#define EC_R_NO_SUCH_EXTRA_DATA 105
#define EC_R_POINT_AT_INFINITY 106
#define EC_R_POINT_IS_NOT_ON_CURVE 107
#define EC_R_SLOT_FULL 108
#define EC_R_UNDEFINED_GENERATOR 113
#define EC_R_UNKNOWN_GROUP 116
#define EC_R_UNKNOWN_NID 117
#define EC_R_UNKNOWN_ORDER 114
#ifdef __cplusplus

274
crypto/ec/ec_curve.c Normal file
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@ -0,0 +1,274 @@
/* crypto/ec/ec_curve.c */
/* ====================================================================
* Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* openssl-core@openssl.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
#include "ec_lcl.h"
#include <openssl/err.h>
#include <openssl/obj_mac.h>
#include <openssl/asn1.h>
#include <openssl/asn1t.h>
EC_GROUP *EC_GROUP_nid2group(const int nid)
{
switch(nid)
{
case NID_X9_62_prime192v1:
return EC_GROUP_get_group_by_name(EC_GROUP_X9_62_PRIME_192V1);
case NID_X9_62_prime192v2:
return EC_GROUP_get_group_by_name(EC_GROUP_X9_62_PRIME_192V2);
case NID_X9_62_prime192v3:
return EC_GROUP_get_group_by_name(EC_GROUP_X9_62_PRIME_192V3);
case NID_X9_62_prime239v1:
return EC_GROUP_get_group_by_name(EC_GROUP_X9_62_PRIME_239V1);
case NID_X9_62_prime239v2:
return EC_GROUP_get_group_by_name(EC_GROUP_X9_62_PRIME_239V2);
case NID_X9_62_prime239v3:
return EC_GROUP_get_group_by_name(EC_GROUP_X9_62_PRIME_239V3);
case NID_X9_62_prime256v1:
return EC_GROUP_get_group_by_name(EC_GROUP_X9_62_PRIME_256V1);
}
ECerr(EC_F_EC_GROUP_NID2GROUP, EC_R_UNKNOWN_NID);
return NULL;
}
int EC_GROUP_group2nid(const EC_GROUP *group)
{
return EC_GROUP_get_nid(group);
#if 0
/* TODO: a real compare function for EC_GROUPs */
#define EC_GROUP_cmp(a,b) ((a) != (b))
if (group == NULL)
{
ECerr(EC_F_EC_GROUP_GROUP2NID, EC_R_MISSING_PARAMETERS);
return 0;
}
if (!EC_GROUP_cmp(group, EC_GROUP_GET_X9_62_192V1_GROUP()))
return NID_X9_62_prime192v1;
else if (!EC_GROUP_cmp(group, EC_GROUP_get_x9_62_192v2_group()))
return NID_X9_62_prime192v2;
else if (!EC_GROUP_cmp(group, EC_GROUP_get_x9_62_192v3_group()))
return NID_X9_62_prime192v3;
else if (!EC_GROUP_cmp(group, EC_GROUP_get_x9_62_239v1_group()))
return NID_X9_62_prime239v1;
else if (!EC_GROUP_cmp(group, EC_GROUP_get_x9_62_239v2_group()))
return NID_X9_62_prime239v2;
else if (!EC_GROUP_cmp(group, EC_GROUP_get_x9_62_239v3_group()))
return NID_X9_62_prime239v3;
else if (!EC_GROUP_cmp(group, EC_GROUP_get_x9_62_256v1_group()))
return NID_X9_62_prime256v1;
ECerr(EC_F_EC_GROUP_GROUP2NID, EC_R_UNKNOWN_GROUP);
return 0;
#endif
}
static EC_GROUP *ec_group_set_prime_group(const char *prime_in,
const char *a_in, const char *b_in,
const char *x_in, const int y_bit, const char *order_in)
{
EC_GROUP *group=NULL;
EC_POINT *P=NULL;
BN_CTX *ctx=NULL;
BIGNUM *prime=NULL,*a=NULL,*b=NULL,*x=NULL,*order=NULL;
int ok=0;
if ((ctx = BN_CTX_new()) == NULL) goto bn_err;
if ((prime = BN_new()) == NULL || (a = BN_new()) == NULL || (b = BN_new()) == NULL ||
(x = BN_new()) == NULL || (order = BN_new()) == NULL) goto bn_err;
if (!BN_hex2bn(&prime, prime_in)) goto bn_err;
if (!BN_hex2bn(&a, a_in)) goto bn_err;
if (!BN_hex2bn(&b, b_in)) goto bn_err;
if ((group = EC_GROUP_new_curve_GFp(prime, a, b, ctx)) == NULL) goto err;
if ((P = EC_POINT_new(group)) == NULL) goto err;
if (!BN_hex2bn(&x, x_in)) goto bn_err;
if (!EC_POINT_set_compressed_coordinates_GFp(group, P, x, y_bit, ctx)) goto err;
if (!BN_hex2bn(&order, order_in)) goto bn_err;
if (!EC_GROUP_set_generator(group, P, order, BN_value_one())) goto err;
ok=1;
bn_err:
if (!ok)
ECerr(EC_F_EC_GROUP_SET_PRIME_GROUP, ERR_R_BN_LIB);
err:
if (!ok)
{
EC_GROUP_free(group);
group = NULL;
}
if (P) EC_POINT_free(P);
if (ctx) BN_CTX_free(ctx);
if (prime) BN_free(prime);
if (a) BN_free(a);
if (b) BN_free(b);
if (order) BN_free(order);
if (x) BN_free(x);
return(group);
}
EC_GROUP *EC_GROUP_get_group_by_name(int name)
{
EC_GROUP *ret = NULL;
switch (name)
{
case EC_GROUP_NO_CURVE:
return NULL;
case EC_GROUP_NIST_PRIME_224:
return ec_group_set_prime_group(
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF000000000000000000000001",
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFE",
"B4050A850C04B3ABF54132565044B0B7D7BFD8BA270B39432355FFB4",
"B70E0CBD6BB4BF7F321390B94A03C1D356C21122343280D6115C1D21",0,
"FFFFFFFFFFFFFFFFFFFFFFFFFFFF16A2E0B8F03E13DD29455C5C2A3D");
case EC_GROUP_NIST_PRIME_384:
return ec_group_set_prime_group(
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFF0000000000000000FFFFFFFF",
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFF0000000000000000FFFFFFFC",
"B3312FA7E23EE7E4988E056BE3F82D19181D9C6EFE8141120314088F5013875AC656398D8A2ED19D2A85C8EDD3EC2AEF",
"AA87CA22BE8B05378EB1C71EF320AD746E1D3B628BA79B9859F741E082542A385502F25DBF55296C3A545E3872760AB7",1,
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC7634D81F4372DDF581A0DB248B0A77AECEC196ACCC52973");
case EC_GROUP_NIST_PRIME_521:
return ec_group_set_prime_group(
"1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF",
"1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC",
"051953EB9618E1C9A1F929A21A0B68540EEA2DA725B99B"
"315F3B8B489918EF109E156193951EC7E937B1652C0BD3BB1BF073573DF883D2C34F1EF451FD46B503F00",
"C6858E06B70404E9CD9E3ECB662395B4429C648139053F"
"B521F828AF606B4D3DBAA14B5E77EFE75928FE1DC127A2FFA8DE3348B3C1856A429BF97E7E31C2E5BD66",0,
"1FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
"FFFFFFFFFFFFFFFFFFFFA51868783BF2F966B7FCC0148F709A5D03BB5C9B8899C47AEBB6FB71E91386409");
case EC_GROUP_NIST_PRIME_192:
case EC_GROUP_X9_62_PRIME_192V1:
ret = ec_group_set_prime_group(
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFF",
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFC",
"64210519E59C80E70FA7E9AB72243049FEB8DEECC146B9B1",
"188DA80EB03090F67CBF20EB43A18800F4FF0AFD82FF1012",1,
"FFFFFFFFFFFFFFFFFFFFFFFF99DEF836146BC9B1B4D22831");
EC_GROUP_set_nid(ret, NID_X9_62_prime192v1);
return ret;
case EC_GROUP_X9_62_PRIME_192V2:
ret = ec_group_set_prime_group(
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFF",
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFC",
"CC22D6DFB95C6B25E49C0D6364A4E5980C393AA21668D953",
"EEA2BAE7E1497842F2DE7769CFE9C989C072AD696F48034A",1,
"FFFFFFFFFFFFFFFFFFFFFFFE5FB1A724DC80418648D8DD31");
EC_GROUP_set_nid(ret, NID_X9_62_prime192v2);
return ret;
case EC_GROUP_X9_62_PRIME_192V3:
ret = ec_group_set_prime_group(
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFF",
"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFFFC",
"22123DC2395A05CAA7423DAECCC94760A7D462256BD56916",
"7D29778100C65A1DA1783716588DCE2B8B4AEE8E228F1896",0,
"FFFFFFFFFFFFFFFFFFFFFFFF7A62D031C83F4294F640EC13");
EC_GROUP_set_nid(ret, NID_X9_62_prime192v3);
return ret;
case EC_GROUP_X9_62_PRIME_239V1:
ret = ec_group_set_prime_group(
"7FFFFFFFFFFFFFFFFFFFFFFF7FFFFFFFFFFF8000000000007FFFFFFFFFFF",
"7FFFFFFFFFFFFFFFFFFFFFFF7FFFFFFFFFFF8000000000007FFFFFFFFFFC",
"6B016C3BDCF18941D0D654921475CA71A9DB2FB27D1D37796185C2942C0A",
"0FFA963CDCA8816CCC33B8642BEDF905C3D358573D3F27FBBD3B3CB9AAAF",0,
"7FFFFFFFFFFFFFFFFFFFFFFF7FFFFF9E5E9A9F5D9071FBD1522688909D0B");
EC_GROUP_set_nid(ret, NID_X9_62_prime239v1);
return ret;
case EC_GROUP_X9_62_PRIME_239V2:
ret = ec_group_set_prime_group(
"7FFFFFFFFFFFFFFFFFFFFFFF7FFFFFFFFFFF8000000000007FFFFFFFFFFF",
"7FFFFFFFFFFFFFFFFFFFFFFF7FFFFFFFFFFF8000000000007FFFFFFFFFFC",
"617FAB6832576CBBFED50D99F0249C3FEE58B94BA0038C7AE84C8C832F2C",
"38AF09D98727705120C921BB5E9E26296A3CDCF2F35757A0EAFD87B830E7",0,
"7FFFFFFFFFFFFFFFFFFFFFFF800000CFA7E8594377D414C03821BC582063");
EC_GROUP_set_nid(ret, NID_X9_62_prime239v2);
return ret;
case EC_GROUP_X9_62_PRIME_239V3:
ret = ec_group_set_prime_group(
"7FFFFFFFFFFFFFFFFFFFFFFF7FFFFFFFFFFF8000000000007FFFFFFFFFFF",
"7FFFFFFFFFFFFFFFFFFFFFFF7FFFFFFFFFFF8000000000007FFFFFFFFFFC",
"255705FA2A306654B1F4CB03D6A750A30C250102D4988717D9BA15AB6D3E",
"6768AE8E18BB92CFCF005C949AA2C6D94853D0E660BBF854B1C9505FE95A",1,
"7FFFFFFFFFFFFFFFFFFFFFFF7FFFFF975DEB41B3A6057C3C432146526551");
EC_GROUP_set_nid(ret, NID_X9_62_prime239v3);
return ret;
case EC_GROUP_NIST_PRIME_256:
case EC_GROUP_X9_62_PRIME_256V1:
ret = ec_group_set_prime_group(
"FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFF",
"FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFC",
"5AC635D8AA3A93E7B3EBBD55769886BC651D06B0CC53B0F63BCE3C3E27D2604B",
"6B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C296",1,
"FFFFFFFF00000000FFFFFFFFFFFFFFFFBCE6FAADA7179E84F3B9CAC2FC632551");
EC_GROUP_set_nid(ret, NID_X9_62_prime256v1);
return ret;
}
ECerr(EC_F_EC_GROUP_GET_GROUP_BY_NAME, EC_R_UNKNOWN_GROUP);
return NULL;
}

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@ -85,12 +85,16 @@ static ERR_STRING_DATA EC_str_functs[]=
{ERR_PACK(0,EC_F_EC_GROUP_GET_COFACTOR,0), "EC_GROUP_get_cofactor"},
{ERR_PACK(0,EC_F_EC_GROUP_GET_CURVE_GFP,0), "EC_GROUP_get_curve_GFp"},
{ERR_PACK(0,EC_F_EC_GROUP_GET_EXTRA_DATA,0), "EC_GROUP_get_extra_data"},
{ERR_PACK(0,EC_F_EC_GROUP_GET_GROUP_BY_NAME,0), "EC_GROUP_get_group_by_name"},
{ERR_PACK(0,EC_F_EC_GROUP_GET_ORDER,0), "EC_GROUP_get_order"},
{ERR_PACK(0,EC_F_EC_GROUP_GROUP2NID,0), "EC_GROUP_group2nid"},
{ERR_PACK(0,EC_F_EC_GROUP_NEW,0), "EC_GROUP_new"},
{ERR_PACK(0,EC_F_EC_GROUP_NID2GROUP,0), "EC_GROUP_nid2group"},
{ERR_PACK(0,EC_F_EC_GROUP_PRECOMPUTE_MULT,0), "EC_GROUP_precompute_mult"},
{ERR_PACK(0,EC_F_EC_GROUP_SET_CURVE_GFP,0), "EC_GROUP_set_curve_GFp"},
{ERR_PACK(0,EC_F_EC_GROUP_SET_EXTRA_DATA,0), "EC_GROUP_set_extra_data"},
{ERR_PACK(0,EC_F_EC_GROUP_SET_GENERATOR,0), "EC_GROUP_set_generator"},
{ERR_PACK(0,EC_F_EC_GROUP_SET_PRIME_GROUP,0), "EC_GROUP_SET_PRIME_GROUP"},
{ERR_PACK(0,EC_F_EC_POINTS_MAKE_AFFINE,0), "EC_POINTs_make_affine"},
{ERR_PACK(0,EC_F_EC_POINTS_MUL,0), "EC_POINTs_mul"},
{ERR_PACK(0,EC_F_EC_POINT_ADD,0), "EC_POINT_add"},
@ -123,12 +127,15 @@ static ERR_STRING_DATA EC_str_reasons[]=
{EC_R_INVALID_ENCODING ,"invalid encoding"},
{EC_R_INVALID_FIELD ,"invalid field"},
{EC_R_INVALID_FORM ,"invalid form"},
{EC_R_MISSING_PARAMETERS ,"missing parameters"},
{EC_R_NOT_INITIALIZED ,"not initialized"},
{EC_R_NO_SUCH_EXTRA_DATA ,"no such extra data"},
{EC_R_POINT_AT_INFINITY ,"point at infinity"},
{EC_R_POINT_IS_NOT_ON_CURVE ,"point is not on curve"},
{EC_R_SLOT_FULL ,"slot full"},
{EC_R_UNDEFINED_GENERATOR ,"undefined generator"},
{EC_R_UNKNOWN_GROUP ,"unknown group"},
{EC_R_UNKNOWN_NID ,"unknown nid"},
{EC_R_UNKNOWN_ORDER ,"unknown order"},
{0,NULL}
};

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@ -166,6 +166,9 @@ struct ec_group_st {
EC_POINT *generator; /* optional */
BIGNUM order, cofactor;
int references;
int nid;
void *field_data1; /* method-specific (e.g., Montgomery structure) */
void *field_data2; /* method-specific */
} /* EC_GROUP */;

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@ -93,7 +93,11 @@ EC_GROUP *EC_GROUP_new(const EC_METHOD *meth)
ret->extra_data_dup_func = 0;
ret->extra_data_free_func = 0;
ret->extra_data_clear_free_func = 0;
ret->nid = 0;
ret->references = 1;
if (!meth->group_init(ret))
{
OPENSSL_free(ret);
@ -106,6 +110,12 @@ EC_GROUP *EC_GROUP_new(const EC_METHOD *meth)
void EC_GROUP_free(EC_GROUP *group)
{
int i;
i = CRYPTO_add(&group->references, -1, CRYPTO_LOCK_EC);
if (i > 0)
return;
if (group->meth->group_finish != 0)
group->meth->group_finish(group);
@ -117,6 +127,12 @@ void EC_GROUP_free(EC_GROUP *group)
void EC_GROUP_clear_free(EC_GROUP *group)
{
int i;
i = CRYPTO_add(&group->references, -1, CRYPTO_LOCK_EC);
if (i > 0)
return;
if (group->meth->group_clear_finish != 0)
group->meth->group_clear_finish(group);
else if (group->meth != NULL && group->meth->group_finish != 0)
@ -297,6 +313,16 @@ void EC_GROUP_clear_free_extra_data(EC_GROUP *group)
group->extra_data_clear_free_func = 0;
}
void EC_GROUP_set_nid(EC_GROUP *group, int nid)
{
group->nid = nid;
}
int EC_GROUP_get_nid(const EC_GROUP *group)
{
return group->nid;
}
/* functions for EC_POINT objects */