-/* crypto/ec/ec_asn1.c */
/*
- * Written by Nils Larsch for the OpenSSL project.
- */
-/* ====================================================================
- * Copyright (c) 2000-2003 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
- * licensing@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).
+ * Copyright 2002-2016 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
*/
#include <string.h>
#include <openssl/err.h>
#include <openssl/asn1t.h>
#include <openssl/objects.h>
-
+#include "internal/nelem.h"
int EC_GROUP_get_basis_type(const EC_GROUP *group)
- {
- int i=0;
-
- if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) !=
- NID_X9_62_characteristic_two_field)
- /* everything else is currently not supported */
- return 0;
-
- while (group->poly[i] != 0)
- i++;
-
- if (i == 4)
- return NID_X9_62_ppBasis;
- else if (i == 2)
- return NID_X9_62_tpBasis;
- else
- /* everything else is currently not supported */
- return 0;
- }
+{
+ int i;
+
+ if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) !=
+ NID_X9_62_characteristic_two_field)
+ /* everything else is currently not supported */
+ return 0;
+
+ /* Find the last non-zero element of group->poly[] */
+ for (i = 0;
+ i < (int)OSSL_NELEM(group->poly) && group->poly[i] != 0;
+ i++)
+ continue;
+
+ if (i == 4)
+ return NID_X9_62_ppBasis;
+ else if (i == 2)
+ return NID_X9_62_tpBasis;
+ else
+ /* everything else is currently not supported */
+ return 0;
+}
+
#ifndef OPENSSL_NO_EC2M
int EC_GROUP_get_trinomial_basis(const EC_GROUP *group, unsigned int *k)
- {
- if (group == NULL)
- return 0;
-
- if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) !=
- NID_X9_62_characteristic_two_field
- || !((group->poly[0] != 0) && (group->poly[1] != 0) && (group->poly[2] == 0)))
- {
- ECerr(EC_F_EC_GROUP_GET_TRINOMIAL_BASIS, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
- return 0;
- }
-
- if (k)
- *k = group->poly[1];
-
- return 1;
- }
+{
+ if (group == NULL)
+ return 0;
+
+ if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) !=
+ NID_X9_62_characteristic_two_field
+ || !((group->poly[0] != 0) && (group->poly[1] != 0)
+ && (group->poly[2] == 0))) {
+ ECerr(EC_F_EC_GROUP_GET_TRINOMIAL_BASIS,
+ ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+ return 0;
+ }
+
+ if (k)
+ *k = group->poly[1];
+
+ return 1;
+}
+
int EC_GROUP_get_pentanomial_basis(const EC_GROUP *group, unsigned int *k1,
- unsigned int *k2, unsigned int *k3)
- {
- if (group == NULL)
- return 0;
-
- if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) !=
- NID_X9_62_characteristic_two_field
- || !((group->poly[0] != 0) && (group->poly[1] != 0) && (group->poly[2] != 0) && (group->poly[3] != 0) && (group->poly[4] == 0)))
- {
- ECerr(EC_F_EC_GROUP_GET_PENTANOMIAL_BASIS, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
- return 0;
- }
-
- if (k1)
- *k1 = group->poly[3];
- if (k2)
- *k2 = group->poly[2];
- if (k3)
- *k3 = group->poly[1];
-
- return 1;
- }
+ unsigned int *k2, unsigned int *k3)
+{
+ if (group == NULL)
+ return 0;
+
+ if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) !=
+ NID_X9_62_characteristic_two_field
+ || !((group->poly[0] != 0) && (group->poly[1] != 0)
+ && (group->poly[2] != 0) && (group->poly[3] != 0)
+ && (group->poly[4] == 0))) {
+ ECerr(EC_F_EC_GROUP_GET_PENTANOMIAL_BASIS,
+ ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+ return 0;
+ }
+
+ if (k1)
+ *k1 = group->poly[3];
+ if (k2)
+ *k2 = group->poly[2];
+ if (k3)
+ *k3 = group->poly[1];
+
+ return 1;
+}
#endif
-
/* some structures needed for the asn1 encoding */
typedef struct x9_62_pentanomial_st {
- long k1;
- long k2;
- long k3;
- } X9_62_PENTANOMIAL;
+ int32_t k1;
+ int32_t k2;
+ int32_t k3;
+} X9_62_PENTANOMIAL;
typedef struct x9_62_characteristic_two_st {
- long m;
- ASN1_OBJECT *type;
- union {
- char *ptr;
- /* NID_X9_62_onBasis */
- ASN1_NULL *onBasis;
- /* NID_X9_62_tpBasis */
- ASN1_INTEGER *tpBasis;
- /* NID_X9_62_ppBasis */
- X9_62_PENTANOMIAL *ppBasis;
- /* anything else */
- ASN1_TYPE *other;
- } p;
- } X9_62_CHARACTERISTIC_TWO;
+ int32_t m;
+ ASN1_OBJECT *type;
+ union {
+ char *ptr;
+ /* NID_X9_62_onBasis */
+ ASN1_NULL *onBasis;
+ /* NID_X9_62_tpBasis */
+ ASN1_INTEGER *tpBasis;
+ /* NID_X9_62_ppBasis */
+ X9_62_PENTANOMIAL *ppBasis;
+ /* anything else */
+ ASN1_TYPE *other;
+ } p;
+} X9_62_CHARACTERISTIC_TWO;
typedef struct x9_62_fieldid_st {
- ASN1_OBJECT *fieldType;
- union {
- char *ptr;
- /* NID_X9_62_prime_field */
- ASN1_INTEGER *prime;
- /* NID_X9_62_characteristic_two_field */
- X9_62_CHARACTERISTIC_TWO *char_two;
- /* anything else */
- ASN1_TYPE *other;
- } p;
- } X9_62_FIELDID;
+ ASN1_OBJECT *fieldType;
+ union {
+ char *ptr;
+ /* NID_X9_62_prime_field */
+ ASN1_INTEGER *prime;
+ /* NID_X9_62_characteristic_two_field */
+ X9_62_CHARACTERISTIC_TWO *char_two;
+ /* anything else */
+ ASN1_TYPE *other;
+ } p;
+} X9_62_FIELDID;
typedef struct x9_62_curve_st {
- ASN1_OCTET_STRING *a;
- ASN1_OCTET_STRING *b;
- ASN1_BIT_STRING *seed;
- } X9_62_CURVE;
-
-typedef struct ec_parameters_st {
- long version;
- X9_62_FIELDID *fieldID;
- X9_62_CURVE *curve;
- ASN1_OCTET_STRING *base;
- ASN1_INTEGER *order;
- ASN1_INTEGER *cofactor;
- } ECPARAMETERS;
+ ASN1_OCTET_STRING *a;
+ ASN1_OCTET_STRING *b;
+ ASN1_BIT_STRING *seed;
+} X9_62_CURVE;
+
+struct ec_parameters_st {
+ int32_t version;
+ X9_62_FIELDID *fieldID;
+ X9_62_CURVE *curve;
+ ASN1_OCTET_STRING *base;
+ ASN1_INTEGER *order;
+ ASN1_INTEGER *cofactor;
+} /* ECPARAMETERS */ ;
struct ecpk_parameters_st {
- int type;
- union {
- ASN1_OBJECT *named_curve;
- ECPARAMETERS *parameters;
- ASN1_NULL *implicitlyCA;
- } value;
- }/* ECPKPARAMETERS */;
+ int type;
+ union {
+ ASN1_OBJECT *named_curve;
+ ECPARAMETERS *parameters;
+ ASN1_NULL *implicitlyCA;
+ } value;
+} /* ECPKPARAMETERS */ ;
/* SEC1 ECPrivateKey */
typedef struct ec_privatekey_st {
- long version;
- ASN1_OCTET_STRING *privateKey;
- ECPKPARAMETERS *parameters;
- ASN1_BIT_STRING *publicKey;
- } EC_PRIVATEKEY;
+ int32_t version;
+ ASN1_OCTET_STRING *privateKey;
+ ECPKPARAMETERS *parameters;
+ ASN1_BIT_STRING *publicKey;
+} EC_PRIVATEKEY;
/* the OpenSSL ASN.1 definitions */
ASN1_SEQUENCE(X9_62_PENTANOMIAL) = {
- ASN1_SIMPLE(X9_62_PENTANOMIAL, k1, LONG),
- ASN1_SIMPLE(X9_62_PENTANOMIAL, k2, LONG),
- ASN1_SIMPLE(X9_62_PENTANOMIAL, k3, LONG)
-} ASN1_SEQUENCE_END(X9_62_PENTANOMIAL)
+ ASN1_EMBED(X9_62_PENTANOMIAL, k1, INT32),
+ ASN1_EMBED(X9_62_PENTANOMIAL, k2, INT32),
+ ASN1_EMBED(X9_62_PENTANOMIAL, k3, INT32)
+} static_ASN1_SEQUENCE_END(X9_62_PENTANOMIAL)
DECLARE_ASN1_ALLOC_FUNCTIONS(X9_62_PENTANOMIAL)
IMPLEMENT_ASN1_ALLOC_FUNCTIONS(X9_62_PENTANOMIAL)
ASN1_ADB_TEMPLATE(char_two_def) = ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, p.other, ASN1_ANY);
ASN1_ADB(X9_62_CHARACTERISTIC_TWO) = {
- ADB_ENTRY(NID_X9_62_onBasis, ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, p.onBasis, ASN1_NULL)),
- ADB_ENTRY(NID_X9_62_tpBasis, ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, p.tpBasis, ASN1_INTEGER)),
- ADB_ENTRY(NID_X9_62_ppBasis, ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, p.ppBasis, X9_62_PENTANOMIAL))
+ ADB_ENTRY(NID_X9_62_onBasis, ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, p.onBasis, ASN1_NULL)),
+ ADB_ENTRY(NID_X9_62_tpBasis, ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, p.tpBasis, ASN1_INTEGER)),
+ ADB_ENTRY(NID_X9_62_ppBasis, ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, p.ppBasis, X9_62_PENTANOMIAL))
} ASN1_ADB_END(X9_62_CHARACTERISTIC_TWO, 0, type, 0, &char_two_def_tt, NULL);
ASN1_SEQUENCE(X9_62_CHARACTERISTIC_TWO) = {
- ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, m, LONG),
- ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, type, ASN1_OBJECT),
- ASN1_ADB_OBJECT(X9_62_CHARACTERISTIC_TWO)
-} ASN1_SEQUENCE_END(X9_62_CHARACTERISTIC_TWO)
+ ASN1_EMBED(X9_62_CHARACTERISTIC_TWO, m, INT32),
+ ASN1_SIMPLE(X9_62_CHARACTERISTIC_TWO, type, ASN1_OBJECT),
+ ASN1_ADB_OBJECT(X9_62_CHARACTERISTIC_TWO)
+} static_ASN1_SEQUENCE_END(X9_62_CHARACTERISTIC_TWO)
DECLARE_ASN1_ALLOC_FUNCTIONS(X9_62_CHARACTERISTIC_TWO)
IMPLEMENT_ASN1_ALLOC_FUNCTIONS(X9_62_CHARACTERISTIC_TWO)
ASN1_ADB_TEMPLATE(fieldID_def) = ASN1_SIMPLE(X9_62_FIELDID, p.other, ASN1_ANY);
ASN1_ADB(X9_62_FIELDID) = {
- ADB_ENTRY(NID_X9_62_prime_field, ASN1_SIMPLE(X9_62_FIELDID, p.prime, ASN1_INTEGER)),
- ADB_ENTRY(NID_X9_62_characteristic_two_field, ASN1_SIMPLE(X9_62_FIELDID, p.char_two, X9_62_CHARACTERISTIC_TWO))
+ ADB_ENTRY(NID_X9_62_prime_field, ASN1_SIMPLE(X9_62_FIELDID, p.prime, ASN1_INTEGER)),
+ ADB_ENTRY(NID_X9_62_characteristic_two_field, ASN1_SIMPLE(X9_62_FIELDID, p.char_two, X9_62_CHARACTERISTIC_TWO))
} ASN1_ADB_END(X9_62_FIELDID, 0, fieldType, 0, &fieldID_def_tt, NULL);
ASN1_SEQUENCE(X9_62_FIELDID) = {
- ASN1_SIMPLE(X9_62_FIELDID, fieldType, ASN1_OBJECT),
- ASN1_ADB_OBJECT(X9_62_FIELDID)
-} ASN1_SEQUENCE_END(X9_62_FIELDID)
+ ASN1_SIMPLE(X9_62_FIELDID, fieldType, ASN1_OBJECT),
+ ASN1_ADB_OBJECT(X9_62_FIELDID)
+} static_ASN1_SEQUENCE_END(X9_62_FIELDID)
ASN1_SEQUENCE(X9_62_CURVE) = {
- ASN1_SIMPLE(X9_62_CURVE, a, ASN1_OCTET_STRING),
- ASN1_SIMPLE(X9_62_CURVE, b, ASN1_OCTET_STRING),
- ASN1_OPT(X9_62_CURVE, seed, ASN1_BIT_STRING)
-} ASN1_SEQUENCE_END(X9_62_CURVE)
+ ASN1_SIMPLE(X9_62_CURVE, a, ASN1_OCTET_STRING),
+ ASN1_SIMPLE(X9_62_CURVE, b, ASN1_OCTET_STRING),
+ ASN1_OPT(X9_62_CURVE, seed, ASN1_BIT_STRING)
+} static_ASN1_SEQUENCE_END(X9_62_CURVE)
ASN1_SEQUENCE(ECPARAMETERS) = {
- ASN1_SIMPLE(ECPARAMETERS, version, LONG),
- ASN1_SIMPLE(ECPARAMETERS, fieldID, X9_62_FIELDID),
- ASN1_SIMPLE(ECPARAMETERS, curve, X9_62_CURVE),
- ASN1_SIMPLE(ECPARAMETERS, base, ASN1_OCTET_STRING),
- ASN1_SIMPLE(ECPARAMETERS, order, ASN1_INTEGER),
- ASN1_OPT(ECPARAMETERS, cofactor, ASN1_INTEGER)
+ ASN1_EMBED(ECPARAMETERS, version, INT32),
+ ASN1_SIMPLE(ECPARAMETERS, fieldID, X9_62_FIELDID),
+ ASN1_SIMPLE(ECPARAMETERS, curve, X9_62_CURVE),
+ ASN1_SIMPLE(ECPARAMETERS, base, ASN1_OCTET_STRING),
+ ASN1_SIMPLE(ECPARAMETERS, order, ASN1_INTEGER),
+ ASN1_OPT(ECPARAMETERS, cofactor, ASN1_INTEGER)
} ASN1_SEQUENCE_END(ECPARAMETERS)
DECLARE_ASN1_ALLOC_FUNCTIONS(ECPARAMETERS)
IMPLEMENT_ASN1_ALLOC_FUNCTIONS(ECPARAMETERS)
ASN1_CHOICE(ECPKPARAMETERS) = {
- ASN1_SIMPLE(ECPKPARAMETERS, value.named_curve, ASN1_OBJECT),
- ASN1_SIMPLE(ECPKPARAMETERS, value.parameters, ECPARAMETERS),
- ASN1_SIMPLE(ECPKPARAMETERS, value.implicitlyCA, ASN1_NULL)
+ ASN1_SIMPLE(ECPKPARAMETERS, value.named_curve, ASN1_OBJECT),
+ ASN1_SIMPLE(ECPKPARAMETERS, value.parameters, ECPARAMETERS),
+ ASN1_SIMPLE(ECPKPARAMETERS, value.implicitlyCA, ASN1_NULL)
} ASN1_CHOICE_END(ECPKPARAMETERS)
DECLARE_ASN1_FUNCTIONS_const(ECPKPARAMETERS)
IMPLEMENT_ASN1_FUNCTIONS_const(ECPKPARAMETERS)
ASN1_SEQUENCE(EC_PRIVATEKEY) = {
- ASN1_SIMPLE(EC_PRIVATEKEY, version, LONG),
- ASN1_SIMPLE(EC_PRIVATEKEY, privateKey, ASN1_OCTET_STRING),
- ASN1_EXP_OPT(EC_PRIVATEKEY, parameters, ECPKPARAMETERS, 0),
- ASN1_EXP_OPT(EC_PRIVATEKEY, publicKey, ASN1_BIT_STRING, 1)
-} ASN1_SEQUENCE_END(EC_PRIVATEKEY)
+ ASN1_EMBED(EC_PRIVATEKEY, version, INT32),
+ ASN1_SIMPLE(EC_PRIVATEKEY, privateKey, ASN1_OCTET_STRING),
+ ASN1_EXP_OPT(EC_PRIVATEKEY, parameters, ECPKPARAMETERS, 0),
+ ASN1_EXP_OPT(EC_PRIVATEKEY, publicKey, ASN1_BIT_STRING, 1)
+} static_ASN1_SEQUENCE_END(EC_PRIVATEKEY)
DECLARE_ASN1_FUNCTIONS_const(EC_PRIVATEKEY)
DECLARE_ASN1_ENCODE_FUNCTIONS_const(EC_PRIVATEKEY, EC_PRIVATEKEY)
/* some declarations of internal function */
-/* ec_asn1_group2field() sets the values in a X9_62_FIELDID object */
+/* ec_asn1_group2field() sets the values in a X9_62_FIELDID object */
static int ec_asn1_group2fieldid(const EC_GROUP *, X9_62_FIELDID *);
-/* ec_asn1_group2curve() sets the values in a X9_62_CURVE object */
+/* ec_asn1_group2curve() sets the values in a X9_62_CURVE object */
static int ec_asn1_group2curve(const EC_GROUP *, X9_62_CURVE *);
-/* ec_asn1_parameters2group() creates a EC_GROUP object from a
- * ECPARAMETERS object */
-static EC_GROUP *ec_asn1_parameters2group(const ECPARAMETERS *);
-/* ec_asn1_group2parameters() creates a ECPARAMETERS object from a
- * EC_GROUP object */
-static ECPARAMETERS *ec_asn1_group2parameters(const EC_GROUP *,ECPARAMETERS *);
-/* ec_asn1_pkparameters2group() creates a EC_GROUP object from a
- * ECPKPARAMETERS object */
-static EC_GROUP *ec_asn1_pkparameters2group(const ECPKPARAMETERS *);
-/* ec_asn1_group2pkparameters() creates a ECPKPARAMETERS object from a
- * EC_GROUP object */
-static ECPKPARAMETERS *ec_asn1_group2pkparameters(const EC_GROUP *,
- ECPKPARAMETERS *);
-
/* the function definitions */
static int ec_asn1_group2fieldid(const EC_GROUP *group, X9_62_FIELDID *field)
- {
- int ok=0, nid;
- BIGNUM *tmp = NULL;
-
- if (group == NULL || field == NULL)
- return 0;
-
- /* clear the old values (if necessary) */
- if (field->fieldType != NULL)
- ASN1_OBJECT_free(field->fieldType);
- if (field->p.other != NULL)
- ASN1_TYPE_free(field->p.other);
-
- nid = EC_METHOD_get_field_type(EC_GROUP_method_of(group));
- /* set OID for the field */
- if ((field->fieldType = OBJ_nid2obj(nid)) == NULL)
- {
- ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_OBJ_LIB);
- goto err;
- }
-
- if (nid == NID_X9_62_prime_field)
- {
- if ((tmp = BN_new()) == NULL)
- {
- ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- /* the parameters are specified by the prime number p */
- if (!EC_GROUP_get_curve_GFp(group, tmp, NULL, NULL, NULL))
- {
- ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_EC_LIB);
- goto err;
- }
- /* set the prime number */
- field->p.prime = BN_to_ASN1_INTEGER(tmp,NULL);
- if (field->p.prime == NULL)
- {
- ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_ASN1_LIB);
- goto err;
- }
- }
- else /* nid == NID_X9_62_characteristic_two_field */
+{
+ int ok = 0, nid;
+ BIGNUM *tmp = NULL;
+
+ if (group == NULL || field == NULL)
+ return 0;
+
+ /* clear the old values (if necessary) */
+ ASN1_OBJECT_free(field->fieldType);
+ ASN1_TYPE_free(field->p.other);
+
+ nid = EC_METHOD_get_field_type(EC_GROUP_method_of(group));
+ /* set OID for the field */
+ if ((field->fieldType = OBJ_nid2obj(nid)) == NULL) {
+ ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_OBJ_LIB);
+ goto err;
+ }
+
+ if (nid == NID_X9_62_prime_field) {
+ if ((tmp = BN_new()) == NULL) {
+ ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ /* the parameters are specified by the prime number p */
+ if (!EC_GROUP_get_curve_GFp(group, tmp, NULL, NULL, NULL)) {
+ ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_EC_LIB);
+ goto err;
+ }
+ /* set the prime number */
+ field->p.prime = BN_to_ASN1_INTEGER(tmp, NULL);
+ if (field->p.prime == NULL) {
+ ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_ASN1_LIB);
+ goto err;
+ }
+ } else if (nid == NID_X9_62_characteristic_two_field)
#ifdef OPENSSL_NO_EC2M
- {
- ECerr(EC_F_EC_ASN1_GROUP2FIELDID, EC_R_GF2M_NOT_SUPPORTED);
- goto err;
- }
+ {
+ ECerr(EC_F_EC_ASN1_GROUP2FIELDID, EC_R_GF2M_NOT_SUPPORTED);
+ goto err;
+ }
#else
- {
- int field_type;
- X9_62_CHARACTERISTIC_TWO *char_two;
-
- field->p.char_two = X9_62_CHARACTERISTIC_TWO_new();
- char_two = field->p.char_two;
-
- if (char_two == NULL)
- {
- ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- char_two->m = (long)EC_GROUP_get_degree(group);
-
- field_type = EC_GROUP_get_basis_type(group);
-
- if (field_type == 0)
- {
- ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_EC_LIB);
- goto err;
- }
- /* set base type OID */
- if ((char_two->type = OBJ_nid2obj(field_type)) == NULL)
- {
- ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_OBJ_LIB);
- goto err;
- }
-
- if (field_type == NID_X9_62_tpBasis)
- {
- unsigned int k;
-
- if (!EC_GROUP_get_trinomial_basis(group, &k))
- goto err;
-
- char_two->p.tpBasis = ASN1_INTEGER_new();
- if (!char_two->p.tpBasis)
- {
- ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- if (!ASN1_INTEGER_set(char_two->p.tpBasis, (long)k))
- {
- ECerr(EC_F_EC_ASN1_GROUP2FIELDID,
- ERR_R_ASN1_LIB);
- goto err;
- }
- }
- else if (field_type == NID_X9_62_ppBasis)
- {
- unsigned int k1, k2, k3;
-
- if (!EC_GROUP_get_pentanomial_basis(group, &k1, &k2, &k3))
- goto err;
-
- char_two->p.ppBasis = X9_62_PENTANOMIAL_new();
- if (!char_two->p.ppBasis)
- {
- ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- /* set k? values */
- char_two->p.ppBasis->k1 = (long)k1;
- char_two->p.ppBasis->k2 = (long)k2;
- char_two->p.ppBasis->k3 = (long)k3;
- }
- else /* field_type == NID_X9_62_onBasis */
- {
- /* for ONB the parameters are (asn1) NULL */
- char_two->p.onBasis = ASN1_NULL_new();
- if (!char_two->p.onBasis)
- {
- ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- }
- }
+ {
+ int field_type;
+ X9_62_CHARACTERISTIC_TWO *char_two;
+
+ field->p.char_two = X9_62_CHARACTERISTIC_TWO_new();
+ char_two = field->p.char_two;
+
+ if (char_two == NULL) {
+ ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ char_two->m = (long)EC_GROUP_get_degree(group);
+
+ field_type = EC_GROUP_get_basis_type(group);
+
+ if (field_type == 0) {
+ ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_EC_LIB);
+ goto err;
+ }
+ /* set base type OID */
+ if ((char_two->type = OBJ_nid2obj(field_type)) == NULL) {
+ ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_OBJ_LIB);
+ goto err;
+ }
+
+ if (field_type == NID_X9_62_tpBasis) {
+ unsigned int k;
+
+ if (!EC_GROUP_get_trinomial_basis(group, &k))
+ goto err;
+
+ char_two->p.tpBasis = ASN1_INTEGER_new();
+ if (char_two->p.tpBasis == NULL) {
+ ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ if (!ASN1_INTEGER_set(char_two->p.tpBasis, (long)k)) {
+ ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_ASN1_LIB);
+ goto err;
+ }
+ } else if (field_type == NID_X9_62_ppBasis) {
+ unsigned int k1, k2, k3;
+
+ if (!EC_GROUP_get_pentanomial_basis(group, &k1, &k2, &k3))
+ goto err;
+
+ char_two->p.ppBasis = X9_62_PENTANOMIAL_new();
+ if (char_two->p.ppBasis == NULL) {
+ ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ /* set k? values */
+ char_two->p.ppBasis->k1 = (long)k1;
+ char_two->p.ppBasis->k2 = (long)k2;
+ char_two->p.ppBasis->k3 = (long)k3;
+ } else { /* field_type == NID_X9_62_onBasis */
+
+ /* for ONB the parameters are (asn1) NULL */
+ char_two->p.onBasis = ASN1_NULL_new();
+ if (char_two->p.onBasis == NULL) {
+ ECerr(EC_F_EC_ASN1_GROUP2FIELDID, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ }
+ }
#endif
+ else {
+ ECerr(EC_F_EC_ASN1_GROUP2FIELDID, EC_R_UNSUPPORTED_FIELD);
+ goto err;
+ }
- ok = 1;
+ ok = 1;
-err : if (tmp)
- BN_free(tmp);
- return(ok);
+ err:
+ BN_free(tmp);
+ return ok;
}
static int ec_asn1_group2curve(const EC_GROUP *group, X9_62_CURVE *curve)
- {
- int ok=0, nid;
- BIGNUM *tmp_1=NULL, *tmp_2=NULL;
- unsigned char *buffer_1=NULL, *buffer_2=NULL,
- *a_buf=NULL, *b_buf=NULL;
- size_t len_1, len_2;
- unsigned char char_zero = 0;
-
- if (!group || !curve || !curve->a || !curve->b)
- return 0;
-
- if ((tmp_1 = BN_new()) == NULL || (tmp_2 = BN_new()) == NULL)
- {
- ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- nid = EC_METHOD_get_field_type(EC_GROUP_method_of(group));
-
- /* get a and b */
- if (nid == NID_X9_62_prime_field)
- {
- if (!EC_GROUP_get_curve_GFp(group, NULL, tmp_1, tmp_2, NULL))
- {
- ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_EC_LIB);
- goto err;
- }
- }
+{
+ int ok = 0, nid;
+ BIGNUM *tmp_1 = NULL, *tmp_2 = NULL;
+ unsigned char *buffer_1 = NULL, *buffer_2 = NULL,
+ *a_buf = NULL, *b_buf = NULL;
+ size_t len_1, len_2;
+ unsigned char char_zero = 0;
+
+ if (!group || !curve || !curve->a || !curve->b)
+ return 0;
+
+ if ((tmp_1 = BN_new()) == NULL || (tmp_2 = BN_new()) == NULL) {
+ ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ nid = EC_METHOD_get_field_type(EC_GROUP_method_of(group));
+
+ /* get a and b */
+ if (nid == NID_X9_62_prime_field) {
+ if (!EC_GROUP_get_curve_GFp(group, NULL, tmp_1, tmp_2, NULL)) {
+ ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_EC_LIB);
+ goto err;
+ }
+ }
#ifndef OPENSSL_NO_EC2M
- else /* nid == NID_X9_62_characteristic_two_field */
- {
- if (!EC_GROUP_get_curve_GF2m(group, NULL, tmp_1, tmp_2, NULL))
- {
- ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_EC_LIB);
- goto err;
- }
- }
+ else { /* nid == NID_X9_62_characteristic_two_field */
+
+ if (!EC_GROUP_get_curve_GF2m(group, NULL, tmp_1, tmp_2, NULL)) {
+ ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_EC_LIB);
+ goto err;
+ }
+ }
#endif
- len_1 = (size_t)BN_num_bytes(tmp_1);
- len_2 = (size_t)BN_num_bytes(tmp_2);
-
- if (len_1 == 0)
- {
- /* len_1 == 0 => a == 0 */
- a_buf = &char_zero;
- len_1 = 1;
- }
- else
- {
- if ((buffer_1 = OPENSSL_malloc(len_1)) == NULL)
- {
- ECerr(EC_F_EC_ASN1_GROUP2CURVE,
- ERR_R_MALLOC_FAILURE);
- goto err;
- }
- if ( (len_1 = BN_bn2bin(tmp_1, buffer_1)) == 0)
- {
- ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_BN_LIB);
- goto err;
- }
- a_buf = buffer_1;
- }
-
- if (len_2 == 0)
- {
- /* len_2 == 0 => b == 0 */
- b_buf = &char_zero;
- len_2 = 1;
- }
- else
- {
- if ((buffer_2 = OPENSSL_malloc(len_2)) == NULL)
- {
- ECerr(EC_F_EC_ASN1_GROUP2CURVE,
- ERR_R_MALLOC_FAILURE);
- goto err;
- }
- if ( (len_2 = BN_bn2bin(tmp_2, buffer_2)) == 0)
- {
- ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_BN_LIB);
- goto err;
- }
- b_buf = buffer_2;
- }
-
- /* set a and b */
- if (!M_ASN1_OCTET_STRING_set(curve->a, a_buf, len_1) ||
- !M_ASN1_OCTET_STRING_set(curve->b, b_buf, len_2))
- {
- ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_ASN1_LIB);
- goto err;
- }
-
- /* set the seed (optional) */
- if (group->seed)
- {
- if (!curve->seed)
- if ((curve->seed = ASN1_BIT_STRING_new()) == NULL)
- {
- ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- curve->seed->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07);
- curve->seed->flags |= ASN1_STRING_FLAG_BITS_LEFT;
- if (!ASN1_BIT_STRING_set(curve->seed, group->seed,
- (int)group->seed_len))
- {
- ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_ASN1_LIB);
- goto err;
- }
- }
- else
- {
- if (curve->seed)
- {
- ASN1_BIT_STRING_free(curve->seed);
- curve->seed = NULL;
- }
- }
-
- ok = 1;
-
-err: if (buffer_1)
- OPENSSL_free(buffer_1);
- if (buffer_2)
- OPENSSL_free(buffer_2);
- if (tmp_1)
- BN_free(tmp_1);
- if (tmp_2)
- BN_free(tmp_2);
- return(ok);
- }
-
-static ECPARAMETERS *ec_asn1_group2parameters(const EC_GROUP *group,
- ECPARAMETERS *param)
- {
- int ok=0;
- size_t len=0;
- ECPARAMETERS *ret=NULL;
- BIGNUM *tmp=NULL;
- unsigned char *buffer=NULL;
- const EC_POINT *point=NULL;
- point_conversion_form_t form;
-
- if ((tmp = BN_new()) == NULL)
- {
- ECerr(EC_F_EC_ASN1_GROUP2PARAMETERS, ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- if (param == NULL)
- {
- if ((ret = ECPARAMETERS_new()) == NULL)
- {
- ECerr(EC_F_EC_ASN1_GROUP2PARAMETERS,
- ERR_R_MALLOC_FAILURE);
- goto err;
- }
- }
- else
- ret = param;
-
- /* set the version (always one) */
- ret->version = (long)0x1;
-
- /* set the fieldID */
- if (!ec_asn1_group2fieldid(group, ret->fieldID))
- {
- ECerr(EC_F_EC_ASN1_GROUP2PARAMETERS, ERR_R_EC_LIB);
- goto err;
- }
-
- /* set the curve */
- if (!ec_asn1_group2curve(group, ret->curve))
- {
- ECerr(EC_F_EC_ASN1_GROUP2PARAMETERS, ERR_R_EC_LIB);
- goto err;
- }
-
- /* set the base point */
- if ((point = EC_GROUP_get0_generator(group)) == NULL)
- {
- ECerr(EC_F_EC_ASN1_GROUP2PARAMETERS, EC_R_UNDEFINED_GENERATOR);
- goto err;
- }
-
- form = EC_GROUP_get_point_conversion_form(group);
-
- len = EC_POINT_point2oct(group, point, form, NULL, len, NULL);
- if (len == 0)
- {
- ECerr(EC_F_EC_ASN1_GROUP2PARAMETERS, ERR_R_EC_LIB);
- goto err;
- }
- if ((buffer = OPENSSL_malloc(len)) == NULL)
- {
- ECerr(EC_F_EC_ASN1_GROUP2PARAMETERS, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- if (!EC_POINT_point2oct(group, point, form, buffer, len, NULL))
- {
- ECerr(EC_F_EC_ASN1_GROUP2PARAMETERS, ERR_R_EC_LIB);
- goto err;
- }
- if (ret->base == NULL && (ret->base = ASN1_OCTET_STRING_new()) == NULL)
- {
- ECerr(EC_F_EC_ASN1_GROUP2PARAMETERS, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- if (!ASN1_OCTET_STRING_set(ret->base, buffer, len))
- {
- ECerr(EC_F_EC_ASN1_GROUP2PARAMETERS, ERR_R_ASN1_LIB);
- goto err;
- }
-
- /* set the order */
- if (!EC_GROUP_get_order(group, tmp, NULL))
- {
- ECerr(EC_F_EC_ASN1_GROUP2PARAMETERS, ERR_R_EC_LIB);
- goto err;
- }
- ret->order = BN_to_ASN1_INTEGER(tmp, ret->order);
- if (ret->order == NULL)
- {
- ECerr(EC_F_EC_ASN1_GROUP2PARAMETERS, ERR_R_ASN1_LIB);
- goto err;
- }
-
- /* set the cofactor (optional) */
- if (EC_GROUP_get_cofactor(group, tmp, NULL))
- {
- ret->cofactor = BN_to_ASN1_INTEGER(tmp, ret->cofactor);
- if (ret->cofactor == NULL)
- {
- ECerr(EC_F_EC_ASN1_GROUP2PARAMETERS, ERR_R_ASN1_LIB);
- goto err;
- }
- }
-
- ok = 1;
-
-err : if(!ok)
- {
- if (ret && !param)
- ECPARAMETERS_free(ret);
- ret = NULL;
- }
- if (tmp)
- BN_free(tmp);
- if (buffer)
- OPENSSL_free(buffer);
- return(ret);
- }
-
-ECPKPARAMETERS *ec_asn1_group2pkparameters(const EC_GROUP *group,
- ECPKPARAMETERS *params)
- {
- int ok = 1, tmp;
- ECPKPARAMETERS *ret = params;
-
- if (ret == NULL)
- {
- if ((ret = ECPKPARAMETERS_new()) == NULL)
- {
- ECerr(EC_F_EC_ASN1_GROUP2PKPARAMETERS,
- ERR_R_MALLOC_FAILURE);
- return NULL;
- }
- }
- else
- {
- if (ret->type == 0 && ret->value.named_curve)
- ASN1_OBJECT_free(ret->value.named_curve);
- else if (ret->type == 1 && ret->value.parameters)
- ECPARAMETERS_free(ret->value.parameters);
- }
-
- if (EC_GROUP_get_asn1_flag(group))
- {
- /* use the asn1 OID to describe the
- * the elliptic curve parameters
- */
- tmp = EC_GROUP_get_curve_name(group);
- if (tmp)
- {
- ret->type = 0;
- if ((ret->value.named_curve = OBJ_nid2obj(tmp)) == NULL)
- ok = 0;
- }
- else
- /* we don't kmow the nid => ERROR */
- ok = 0;
- }
- else
- {
- /* use the ECPARAMETERS structure */
- ret->type = 1;
- if ((ret->value.parameters = ec_asn1_group2parameters(
- group, NULL)) == NULL)
- ok = 0;
- }
-
- if (!ok)
- {
- ECPKPARAMETERS_free(ret);
- return NULL;
- }
- return ret;
- }
-
-static EC_GROUP *ec_asn1_parameters2group(const ECPARAMETERS *params)
- {
- int ok = 0, tmp;
- EC_GROUP *ret = NULL;
- BIGNUM *p = NULL, *a = NULL, *b = NULL;
- EC_POINT *point=NULL;
- long field_bits;
-
- if (!params->fieldID || !params->fieldID->fieldType ||
- !params->fieldID->p.ptr)
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_ASN1_ERROR);
- goto err;
- }
-
- /* now extract the curve parameters a and b */
- if (!params->curve || !params->curve->a ||
- !params->curve->a->data || !params->curve->b ||
- !params->curve->b->data)
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_ASN1_ERROR);
- goto err;
- }
- a = BN_bin2bn(params->curve->a->data, params->curve->a->length, NULL);
- if (a == NULL)
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_BN_LIB);
- goto err;
- }
- b = BN_bin2bn(params->curve->b->data, params->curve->b->length, NULL);
- if (b == NULL)
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_BN_LIB);
- goto err;
- }
-
- /* get the field parameters */
- tmp = OBJ_obj2nid(params->fieldID->fieldType);
- if (tmp == NID_X9_62_characteristic_two_field)
+ len_1 = (size_t)BN_num_bytes(tmp_1);
+ len_2 = (size_t)BN_num_bytes(tmp_2);
+
+ if (len_1 == 0) {
+ /* len_1 == 0 => a == 0 */
+ a_buf = &char_zero;
+ len_1 = 1;
+ } else {
+ if ((buffer_1 = OPENSSL_malloc(len_1)) == NULL) {
+ ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ if ((len_1 = BN_bn2bin(tmp_1, buffer_1)) == 0) {
+ ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_BN_LIB);
+ goto err;
+ }
+ a_buf = buffer_1;
+ }
+
+ if (len_2 == 0) {
+ /* len_2 == 0 => b == 0 */
+ b_buf = &char_zero;
+ len_2 = 1;
+ } else {
+ if ((buffer_2 = OPENSSL_malloc(len_2)) == NULL) {
+ ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ if ((len_2 = BN_bn2bin(tmp_2, buffer_2)) == 0) {
+ ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_BN_LIB);
+ goto err;
+ }
+ b_buf = buffer_2;
+ }
+
+ /* set a and b */
+ if (!ASN1_OCTET_STRING_set(curve->a, a_buf, len_1) ||
+ !ASN1_OCTET_STRING_set(curve->b, b_buf, len_2)) {
+ ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_ASN1_LIB);
+ goto err;
+ }
+
+ /* set the seed (optional) */
+ if (group->seed) {
+ if (!curve->seed)
+ if ((curve->seed = ASN1_BIT_STRING_new()) == NULL) {
+ ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ curve->seed->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
+ curve->seed->flags |= ASN1_STRING_FLAG_BITS_LEFT;
+ if (!ASN1_BIT_STRING_set(curve->seed, group->seed,
+ (int)group->seed_len)) {
+ ECerr(EC_F_EC_ASN1_GROUP2CURVE, ERR_R_ASN1_LIB);
+ goto err;
+ }
+ } else {
+ ASN1_BIT_STRING_free(curve->seed);
+ curve->seed = NULL;
+ }
+
+ ok = 1;
+
+ err:
+ OPENSSL_free(buffer_1);
+ OPENSSL_free(buffer_2);
+ BN_free(tmp_1);
+ BN_free(tmp_2);
+ return ok;
+}
+
+ECPARAMETERS *EC_GROUP_get_ecparameters(const EC_GROUP *group,
+ ECPARAMETERS *params)
+{
+ size_t len = 0;
+ ECPARAMETERS *ret = NULL;
+ const BIGNUM *tmp;
+ unsigned char *buffer = NULL;
+ const EC_POINT *point = NULL;
+ point_conversion_form_t form;
+
+ if (params == NULL) {
+ if ((ret = ECPARAMETERS_new()) == NULL) {
+ ECerr(EC_F_EC_GROUP_GET_ECPARAMETERS, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ } else
+ ret = params;
+
+ /* set the version (always one) */
+ ret->version = (long)0x1;
+
+ /* set the fieldID */
+ if (!ec_asn1_group2fieldid(group, ret->fieldID)) {
+ ECerr(EC_F_EC_GROUP_GET_ECPARAMETERS, ERR_R_EC_LIB);
+ goto err;
+ }
+
+ /* set the curve */
+ if (!ec_asn1_group2curve(group, ret->curve)) {
+ ECerr(EC_F_EC_GROUP_GET_ECPARAMETERS, ERR_R_EC_LIB);
+ goto err;
+ }
+
+ /* set the base point */
+ if ((point = EC_GROUP_get0_generator(group)) == NULL) {
+ ECerr(EC_F_EC_GROUP_GET_ECPARAMETERS, EC_R_UNDEFINED_GENERATOR);
+ goto err;
+ }
+
+ form = EC_GROUP_get_point_conversion_form(group);
+
+ len = EC_POINT_point2buf(group, point, form, &buffer, NULL);
+ if (len == 0) {
+ ECerr(EC_F_EC_GROUP_GET_ECPARAMETERS, ERR_R_EC_LIB);
+ goto err;
+ }
+ if (ret->base == NULL && (ret->base = ASN1_OCTET_STRING_new()) == NULL) {
+ OPENSSL_free(buffer);
+ ECerr(EC_F_EC_GROUP_GET_ECPARAMETERS, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ ASN1_STRING_set0(ret->base, buffer, len);
+
+ /* set the order */
+ tmp = EC_GROUP_get0_order(group);
+ if (tmp == NULL) {
+ ECerr(EC_F_EC_GROUP_GET_ECPARAMETERS, ERR_R_EC_LIB);
+ goto err;
+ }
+ ret->order = BN_to_ASN1_INTEGER(tmp, ret->order);
+ if (ret->order == NULL) {
+ ECerr(EC_F_EC_GROUP_GET_ECPARAMETERS, ERR_R_ASN1_LIB);
+ goto err;
+ }
+
+ /* set the cofactor (optional) */
+ tmp = EC_GROUP_get0_cofactor(group);
+ if (tmp != NULL) {
+ ret->cofactor = BN_to_ASN1_INTEGER(tmp, ret->cofactor);
+ if (ret->cofactor == NULL) {
+ ECerr(EC_F_EC_GROUP_GET_ECPARAMETERS, ERR_R_ASN1_LIB);
+ goto err;
+ }
+ }
+
+ return ret;
+
+ err:
+ if (params == NULL)
+ ECPARAMETERS_free(ret);
+ return NULL;
+}
+
+ECPKPARAMETERS *EC_GROUP_get_ecpkparameters(const EC_GROUP *group,
+ ECPKPARAMETERS *params)
+{
+ int ok = 1, tmp;
+ ECPKPARAMETERS *ret = params;
+
+ if (ret == NULL) {
+ if ((ret = ECPKPARAMETERS_new()) == NULL) {
+ ECerr(EC_F_EC_GROUP_GET_ECPKPARAMETERS, ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+ } else {
+ if (ret->type == 0)
+ ASN1_OBJECT_free(ret->value.named_curve);
+ else if (ret->type == 1 && ret->value.parameters)
+ ECPARAMETERS_free(ret->value.parameters);
+ }
+
+ if (EC_GROUP_get_asn1_flag(group)) {
+ /*
+ * use the asn1 OID to describe the elliptic curve parameters
+ */
+ tmp = EC_GROUP_get_curve_name(group);
+ if (tmp) {
+ ret->type = 0;
+ if ((ret->value.named_curve = OBJ_nid2obj(tmp)) == NULL)
+ ok = 0;
+ } else
+ /* we don't know the nid => ERROR */
+ ok = 0;
+ } else {
+ /* use the ECPARAMETERS structure */
+ ret->type = 1;
+ if ((ret->value.parameters =
+ EC_GROUP_get_ecparameters(group, NULL)) == NULL)
+ ok = 0;
+ }
+
+ if (!ok) {
+ ECPKPARAMETERS_free(ret);
+ return NULL;
+ }
+ return ret;
+}
+
+EC_GROUP *EC_GROUP_new_from_ecparameters(const ECPARAMETERS *params)
+{
+ int ok = 0, tmp;
+ EC_GROUP *ret = NULL;
+ BIGNUM *p = NULL, *a = NULL, *b = NULL;
+ EC_POINT *point = NULL;
+ long field_bits;
+
+ if (!params->fieldID || !params->fieldID->fieldType ||
+ !params->fieldID->p.ptr) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_ASN1_ERROR);
+ goto err;
+ }
+
+ /* now extract the curve parameters a and b */
+ if (!params->curve || !params->curve->a ||
+ !params->curve->a->data || !params->curve->b ||
+ !params->curve->b->data) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_ASN1_ERROR);
+ goto err;
+ }
+ a = BN_bin2bn(params->curve->a->data, params->curve->a->length, NULL);
+ if (a == NULL) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_BN_LIB);
+ goto err;
+ }
+ b = BN_bin2bn(params->curve->b->data, params->curve->b->length, NULL);
+ if (b == NULL) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_BN_LIB);
+ goto err;
+ }
+
+ /* get the field parameters */
+ tmp = OBJ_obj2nid(params->fieldID->fieldType);
+ if (tmp == NID_X9_62_characteristic_two_field)
#ifdef OPENSSL_NO_EC2M
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_GF2M_NOT_SUPPORTED);
- goto err;
- }
+ {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_GF2M_NOT_SUPPORTED);
+ goto err;
+ }
#else
- {
- X9_62_CHARACTERISTIC_TWO *char_two;
-
- char_two = params->fieldID->p.char_two;
-
- field_bits = char_two->m;
- if (field_bits > OPENSSL_ECC_MAX_FIELD_BITS)
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_FIELD_TOO_LARGE);
- goto err;
- }
-
- if ((p = BN_new()) == NULL)
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- /* get the base type */
- tmp = OBJ_obj2nid(char_two->type);
-
- if (tmp == NID_X9_62_tpBasis)
- {
- long tmp_long;
-
- if (!char_two->p.tpBasis)
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_ASN1_ERROR);
- goto err;
- }
-
- tmp_long = ASN1_INTEGER_get(char_two->p.tpBasis);
-
- if (!(char_two->m > tmp_long && tmp_long > 0))
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_INVALID_TRINOMIAL_BASIS);
- goto err;
- }
-
- /* create the polynomial */
- if (!BN_set_bit(p, (int)char_two->m))
- goto err;
- if (!BN_set_bit(p, (int)tmp_long))
- goto err;
- if (!BN_set_bit(p, 0))
- goto err;
- }
- else if (tmp == NID_X9_62_ppBasis)
- {
- X9_62_PENTANOMIAL *penta;
-
- penta = char_two->p.ppBasis;
- if (!penta)
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_ASN1_ERROR);
- goto err;
- }
-
- if (!(char_two->m > penta->k3 && penta->k3 > penta->k2 && penta->k2 > penta->k1 && penta->k1 > 0))
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_INVALID_PENTANOMIAL_BASIS);
- goto err;
- }
-
- /* create the polynomial */
- if (!BN_set_bit(p, (int)char_two->m)) goto err;
- if (!BN_set_bit(p, (int)penta->k1)) goto err;
- if (!BN_set_bit(p, (int)penta->k2)) goto err;
- if (!BN_set_bit(p, (int)penta->k3)) goto err;
- if (!BN_set_bit(p, 0)) goto err;
- }
- else if (tmp == NID_X9_62_onBasis)
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_NOT_IMPLEMENTED);
- goto err;
- }
- else /* error */
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_ASN1_ERROR);
- goto err;
- }
-
- /* create the EC_GROUP structure */
- ret = EC_GROUP_new_curve_GF2m(p, a, b, NULL);
- }
+ {
+ X9_62_CHARACTERISTIC_TWO *char_two;
+
+ char_two = params->fieldID->p.char_two;
+
+ field_bits = char_two->m;
+ if (field_bits > OPENSSL_ECC_MAX_FIELD_BITS) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_FIELD_TOO_LARGE);
+ goto err;
+ }
+
+ if ((p = BN_new()) == NULL) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ /* get the base type */
+ tmp = OBJ_obj2nid(char_two->type);
+
+ if (tmp == NID_X9_62_tpBasis) {
+ long tmp_long;
+
+ if (!char_two->p.tpBasis) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_ASN1_ERROR);
+ goto err;
+ }
+
+ tmp_long = ASN1_INTEGER_get(char_two->p.tpBasis);
+
+ if (!(char_two->m > tmp_long && tmp_long > 0)) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS,
+ EC_R_INVALID_TRINOMIAL_BASIS);
+ goto err;
+ }
+
+ /* create the polynomial */
+ if (!BN_set_bit(p, (int)char_two->m))
+ goto err;
+ if (!BN_set_bit(p, (int)tmp_long))
+ goto err;
+ if (!BN_set_bit(p, 0))
+ goto err;
+ } else if (tmp == NID_X9_62_ppBasis) {
+ X9_62_PENTANOMIAL *penta;
+
+ penta = char_two->p.ppBasis;
+ if (!penta) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_ASN1_ERROR);
+ goto err;
+ }
+
+ if (!
+ (char_two->m > penta->k3 && penta->k3 > penta->k2
+ && penta->k2 > penta->k1 && penta->k1 > 0)) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS,
+ EC_R_INVALID_PENTANOMIAL_BASIS);
+ goto err;
+ }
+
+ /* create the polynomial */
+ if (!BN_set_bit(p, (int)char_two->m))
+ goto err;
+ if (!BN_set_bit(p, (int)penta->k1))
+ goto err;
+ if (!BN_set_bit(p, (int)penta->k2))
+ goto err;
+ if (!BN_set_bit(p, (int)penta->k3))
+ goto err;
+ if (!BN_set_bit(p, 0))
+ goto err;
+ } else if (tmp == NID_X9_62_onBasis) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_NOT_IMPLEMENTED);
+ goto err;
+ } else { /* error */
+
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_ASN1_ERROR);
+ goto err;
+ }
+
+ /* create the EC_GROUP structure */
+ ret = EC_GROUP_new_curve_GF2m(p, a, b, NULL);
+ }
#endif
- else if (tmp == NID_X9_62_prime_field)
- {
- /* we have a curve over a prime field */
- /* extract the prime number */
- if (!params->fieldID->p.prime)
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_ASN1_ERROR);
- goto err;
- }
- p = ASN1_INTEGER_to_BN(params->fieldID->p.prime, NULL);
- if (p == NULL)
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_ASN1_LIB);
- goto err;
- }
-
- if (BN_is_negative(p) || BN_is_zero(p))
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_INVALID_FIELD);
- goto err;
- }
-
- field_bits = BN_num_bits(p);
- if (field_bits > OPENSSL_ECC_MAX_FIELD_BITS)
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_FIELD_TOO_LARGE);
- goto err;
- }
-
- /* create the EC_GROUP structure */
- ret = EC_GROUP_new_curve_GFp(p, a, b, NULL);
- }
- else
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_INVALID_FIELD);
- goto err;
- }
-
- if (ret == NULL)
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_EC_LIB);
- goto err;
- }
-
- /* extract seed (optional) */
- if (params->curve->seed != NULL)
- {
- if (ret->seed != NULL)
- OPENSSL_free(ret->seed);
- if (!(ret->seed = OPENSSL_malloc(params->curve->seed->length)))
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP,
- ERR_R_MALLOC_FAILURE);
- goto err;
- }
- memcpy(ret->seed, params->curve->seed->data,
- params->curve->seed->length);
- ret->seed_len = params->curve->seed->length;
- }
-
- if (!params->order || !params->base || !params->base->data)
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_ASN1_ERROR);
- goto err;
- }
-
- if ((point = EC_POINT_new(ret)) == NULL) goto err;
-
- /* set the point conversion form */
- EC_GROUP_set_point_conversion_form(ret, (point_conversion_form_t)
- (params->base->data[0] & ~0x01));
-
- /* extract the ec point */
- if (!EC_POINT_oct2point(ret, point, params->base->data,
- params->base->length, NULL))
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_EC_LIB);
- goto err;
- }
-
- /* extract the order */
- if ((a = ASN1_INTEGER_to_BN(params->order, a)) == NULL)
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_ASN1_LIB);
- goto err;
- }
- if (BN_is_negative(a) || BN_is_zero(a))
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_INVALID_GROUP_ORDER);
- goto err;
- }
- if (BN_num_bits(a) > (int)field_bits + 1) /* Hasse bound */
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, EC_R_INVALID_GROUP_ORDER);
- goto err;
- }
-
- /* extract the cofactor (optional) */
- if (params->cofactor == NULL)
- {
- if (b)
- {
- BN_free(b);
- b = NULL;
- }
- }
- else
- if ((b = ASN1_INTEGER_to_BN(params->cofactor, b)) == NULL)
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_ASN1_LIB);
- goto err;
- }
- /* set the generator, order and cofactor (if present) */
- if (!EC_GROUP_set_generator(ret, point, a, b))
- {
- ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, ERR_R_EC_LIB);
- goto err;
- }
-
- ok = 1;
-
-err: if (!ok)
- {
- if (ret)
- EC_GROUP_clear_free(ret);
- ret = NULL;
- }
-
- if (p)
- BN_free(p);
- if (a)
- BN_free(a);
- if (b)
- BN_free(b);
- if (point)
- EC_POINT_free(point);
- return(ret);
+ else if (tmp == NID_X9_62_prime_field) {
+ /* we have a curve over a prime field */
+ /* extract the prime number */
+ if (!params->fieldID->p.prime) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_ASN1_ERROR);
+ goto err;
+ }
+ p = ASN1_INTEGER_to_BN(params->fieldID->p.prime, NULL);
+ if (p == NULL) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_ASN1_LIB);
+ goto err;
+ }
+
+ if (BN_is_negative(p) || BN_is_zero(p)) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_INVALID_FIELD);
+ goto err;
+ }
+
+ field_bits = BN_num_bits(p);
+ if (field_bits > OPENSSL_ECC_MAX_FIELD_BITS) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_FIELD_TOO_LARGE);
+ goto err;
+ }
+
+ /* create the EC_GROUP structure */
+ ret = EC_GROUP_new_curve_GFp(p, a, b, NULL);
+ } else {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_INVALID_FIELD);
+ goto err;
+ }
+
+ if (ret == NULL) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_EC_LIB);
+ goto err;
+ }
+
+ /* extract seed (optional) */
+ if (params->curve->seed != NULL) {
+ OPENSSL_free(ret->seed);
+ if ((ret->seed = OPENSSL_malloc(params->curve->seed->length)) == NULL) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ memcpy(ret->seed, params->curve->seed->data,
+ params->curve->seed->length);
+ ret->seed_len = params->curve->seed->length;
+ }
+
+ if (!params->order || !params->base || !params->base->data) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_ASN1_ERROR);
+ goto err;
+ }
+
+ if ((point = EC_POINT_new(ret)) == NULL)
+ goto err;
+
+ /* set the point conversion form */
+ EC_GROUP_set_point_conversion_form(ret, (point_conversion_form_t)
+ (params->base->data[0] & ~0x01));
+
+ /* extract the ec point */
+ if (!EC_POINT_oct2point(ret, point, params->base->data,
+ params->base->length, NULL)) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_EC_LIB);
+ goto err;
+ }
+
+ /* extract the order */
+ if ((a = ASN1_INTEGER_to_BN(params->order, a)) == NULL) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_ASN1_LIB);
+ goto err;
+ }
+ if (BN_is_negative(a) || BN_is_zero(a)) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_INVALID_GROUP_ORDER);
+ goto err;
+ }
+ if (BN_num_bits(a) > (int)field_bits + 1) { /* Hasse bound */
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_INVALID_GROUP_ORDER);
+ goto err;
+ }
+
+ /* extract the cofactor (optional) */
+ if (params->cofactor == NULL) {
+ BN_free(b);
+ b = NULL;
+ } else if ((b = ASN1_INTEGER_to_BN(params->cofactor, b)) == NULL) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_ASN1_LIB);
+ goto err;
+ }
+ /* set the generator, order and cofactor (if present) */
+ if (!EC_GROUP_set_generator(ret, point, a, b)) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, ERR_R_EC_LIB);
+ goto err;
+ }
+
+ ok = 1;
+
+ err:
+ if (!ok) {
+ EC_GROUP_clear_free(ret);
+ ret = NULL;
+ }
+
+ BN_free(p);
+ BN_free(a);
+ BN_free(b);
+ EC_POINT_free(point);
+ return ret;
}
-EC_GROUP *ec_asn1_pkparameters2group(const ECPKPARAMETERS *params)
- {
- EC_GROUP *ret=NULL;
- int tmp=0;
-
- if (params == NULL)
- {
- ECerr(EC_F_EC_ASN1_PKPARAMETERS2GROUP,
- EC_R_MISSING_PARAMETERS);
- return NULL;
- }
-
- if (params->type == 0)
- { /* the curve is given by an OID */
- tmp = OBJ_obj2nid(params->value.named_curve);
- if ((ret = EC_GROUP_new_by_curve_name(tmp)) == NULL)
- {
- ECerr(EC_F_EC_ASN1_PKPARAMETERS2GROUP,
- EC_R_EC_GROUP_NEW_BY_NAME_FAILURE);
- return NULL;
- }
- EC_GROUP_set_asn1_flag(ret, OPENSSL_EC_NAMED_CURVE);
- }
- else if (params->type == 1)
- { /* the parameters are given by a ECPARAMETERS
- * structure */
- ret = ec_asn1_parameters2group(params->value.parameters);
- if (!ret)
- {
- ECerr(EC_F_EC_ASN1_PKPARAMETERS2GROUP, ERR_R_EC_LIB);
- return NULL;
- }
- EC_GROUP_set_asn1_flag(ret, 0x0);
- }
- else if (params->type == 2)
- { /* implicitlyCA */
- return NULL;
- }
- else
- {
- ECerr(EC_F_EC_ASN1_PKPARAMETERS2GROUP, EC_R_ASN1_ERROR);
- return NULL;
- }
-
- return ret;
- }
+EC_GROUP *EC_GROUP_new_from_ecpkparameters(const ECPKPARAMETERS *params)
+{
+ EC_GROUP *ret = NULL;
+ int tmp = 0;
+
+ if (params == NULL) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPKPARAMETERS, EC_R_MISSING_PARAMETERS);
+ return NULL;
+ }
+
+ if (params->type == 0) { /* the curve is given by an OID */
+ tmp = OBJ_obj2nid(params->value.named_curve);
+ if ((ret = EC_GROUP_new_by_curve_name(tmp)) == NULL) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPKPARAMETERS,
+ EC_R_EC_GROUP_NEW_BY_NAME_FAILURE);
+ return NULL;
+ }
+ EC_GROUP_set_asn1_flag(ret, OPENSSL_EC_NAMED_CURVE);
+ } else if (params->type == 1) { /* the parameters are given by a
+ * ECPARAMETERS structure */
+ ret = EC_GROUP_new_from_ecparameters(params->value.parameters);
+ if (!ret) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPKPARAMETERS, ERR_R_EC_LIB);
+ return NULL;
+ }
+ EC_GROUP_set_asn1_flag(ret, 0x0);
+ } else if (params->type == 2) { /* implicitlyCA */
+ return NULL;
+ } else {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_ECPKPARAMETERS, EC_R_ASN1_ERROR);
+ return NULL;
+ }
+
+ return ret;
+}
/* EC_GROUP <-> DER encoding of ECPKPARAMETERS */
EC_GROUP *d2i_ECPKParameters(EC_GROUP **a, const unsigned char **in, long len)
- {
- EC_GROUP *group = NULL;
- ECPKPARAMETERS *params = NULL;
-
- if ((params = d2i_ECPKPARAMETERS(NULL, in, len)) == NULL)
- {
- ECerr(EC_F_D2I_ECPKPARAMETERS, EC_R_D2I_ECPKPARAMETERS_FAILURE);
- ECPKPARAMETERS_free(params);
- return NULL;
- }
-
- if ((group = ec_asn1_pkparameters2group(params)) == NULL)
- {
- ECerr(EC_F_D2I_ECPKPARAMETERS, EC_R_PKPARAMETERS2GROUP_FAILURE);
- ECPKPARAMETERS_free(params);
- return NULL;
- }
-
-
- if (a && *a)
- EC_GROUP_clear_free(*a);
- if (a)
- *a = group;
-
- ECPKPARAMETERS_free(params);
- return(group);
- }
+{
+ EC_GROUP *group = NULL;
+ ECPKPARAMETERS *params = NULL;
+ const unsigned char *p = *in;
+
+ if ((params = d2i_ECPKPARAMETERS(NULL, &p, len)) == NULL) {
+ ECerr(EC_F_D2I_ECPKPARAMETERS, EC_R_D2I_ECPKPARAMETERS_FAILURE);
+ ECPKPARAMETERS_free(params);
+ return NULL;
+ }
+
+ if ((group = EC_GROUP_new_from_ecpkparameters(params)) == NULL) {
+ ECerr(EC_F_D2I_ECPKPARAMETERS, EC_R_PKPARAMETERS2GROUP_FAILURE);
+ ECPKPARAMETERS_free(params);
+ return NULL;
+ }
+
+ if (a) {
+ EC_GROUP_clear_free(*a);
+ *a = group;
+ }
+
+ ECPKPARAMETERS_free(params);
+ *in = p;
+ return group;
+}
int i2d_ECPKParameters(const EC_GROUP *a, unsigned char **out)
- {
- int ret=0;
- ECPKPARAMETERS *tmp = ec_asn1_group2pkparameters(a, NULL);
- if (tmp == NULL)
- {
- ECerr(EC_F_I2D_ECPKPARAMETERS, EC_R_GROUP2PKPARAMETERS_FAILURE);
- return 0;
- }
- if ((ret = i2d_ECPKPARAMETERS(tmp, out)) == 0)
- {
- ECerr(EC_F_I2D_ECPKPARAMETERS, EC_R_I2D_ECPKPARAMETERS_FAILURE);
- ECPKPARAMETERS_free(tmp);
- return 0;
- }
- ECPKPARAMETERS_free(tmp);
- return(ret);
- }
+{
+ int ret = 0;
+ ECPKPARAMETERS *tmp = EC_GROUP_get_ecpkparameters(a, NULL);
+ if (tmp == NULL) {
+ ECerr(EC_F_I2D_ECPKPARAMETERS, EC_R_GROUP2PKPARAMETERS_FAILURE);
+ return 0;
+ }
+ if ((ret = i2d_ECPKPARAMETERS(tmp, out)) == 0) {
+ ECerr(EC_F_I2D_ECPKPARAMETERS, EC_R_I2D_ECPKPARAMETERS_FAILURE);
+ ECPKPARAMETERS_free(tmp);
+ return 0;
+ }
+ ECPKPARAMETERS_free(tmp);
+ return ret;
+}
/* some EC_KEY functions */
EC_KEY *d2i_ECPrivateKey(EC_KEY **a, const unsigned char **in, long len)
- {
- int ok=0;
- EC_KEY *ret=NULL;
- EC_PRIVATEKEY *priv_key=NULL;
-
- if ((priv_key = EC_PRIVATEKEY_new()) == NULL)
- {
- ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_MALLOC_FAILURE);
- return NULL;
- }
-
- if ((priv_key = d2i_EC_PRIVATEKEY(&priv_key, in, len)) == NULL)
- {
- ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
- EC_PRIVATEKEY_free(priv_key);
- return NULL;
- }
-
- if (a == NULL || *a == NULL)
- {
- if ((ret = EC_KEY_new()) == NULL)
- {
- ECerr(EC_F_D2I_ECPRIVATEKEY,
- ERR_R_MALLOC_FAILURE);
- goto err;
- }
- if (a)
- *a = ret;
- }
- else
- ret = *a;
-
- if (priv_key->parameters)
- {
- if (ret->group)
- EC_GROUP_clear_free(ret->group);
- ret->group = ec_asn1_pkparameters2group(priv_key->parameters);
- }
-
- if (ret->group == NULL)
- {
- ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
- goto err;
- }
-
- ret->version = priv_key->version;
-
- if (priv_key->privateKey)
- {
- ret->priv_key = BN_bin2bn(
- M_ASN1_STRING_data(priv_key->privateKey),
- M_ASN1_STRING_length(priv_key->privateKey),
- ret->priv_key);
- if (ret->priv_key == NULL)
- {
- ECerr(EC_F_D2I_ECPRIVATEKEY,
- ERR_R_BN_LIB);
- goto err;
- }
- }
- else
- {
- ECerr(EC_F_D2I_ECPRIVATEKEY,
- EC_R_MISSING_PRIVATE_KEY);
- goto err;
- }
-
- if (ret->pub_key)
- EC_POINT_clear_free(ret->pub_key);
- ret->pub_key = EC_POINT_new(ret->group);
- if (ret->pub_key == NULL)
- {
- ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
- goto err;
- }
-
- if (priv_key->publicKey)
- {
- const unsigned char *pub_oct;
- int pub_oct_len;
-
- pub_oct = M_ASN1_STRING_data(priv_key->publicKey);
- pub_oct_len = M_ASN1_STRING_length(priv_key->publicKey);
- /* The first byte - point conversion form - must be present. */
- if (pub_oct_len <= 0)
- {
- ECerr(EC_F_D2I_ECPRIVATEKEY, EC_R_BUFFER_TOO_SMALL);
- goto err;
- }
- /* Save the point conversion form. */
- ret->conv_form = (point_conversion_form_t)(pub_oct[0] & ~0x01);
- if (!EC_POINT_oct2point(ret->group, ret->pub_key,
- pub_oct, (size_t)(pub_oct_len), NULL))
- {
- ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
- goto err;
- }
- }
- else
- {
- if (!EC_POINT_mul(ret->group, ret->pub_key, ret->priv_key, NULL, NULL, NULL))
- {
- ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
- goto err;
- }
- /* Remember the original private-key-only encoding. */
- ret->enc_flag |= EC_PKEY_NO_PUBKEY;
- }
-
- ok = 1;
-err:
- if (!ok)
- {
- if (ret)
- EC_KEY_free(ret);
- ret = NULL;
- }
-
- if (priv_key)
- EC_PRIVATEKEY_free(priv_key);
-
- return(ret);
- }
-
-int i2d_ECPrivateKey(EC_KEY *a, unsigned char **out)
- {
- int ret=0, ok=0;
- unsigned char *buffer=NULL;
- size_t buf_len=0, tmp_len;
- EC_PRIVATEKEY *priv_key=NULL;
-
- if (a == NULL || a->group == NULL || a->priv_key == NULL ||
- (!(a->enc_flag & EC_PKEY_NO_PUBKEY) && a->pub_key == NULL))
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY,
- ERR_R_PASSED_NULL_PARAMETER);
- goto err;
- }
-
- if ((priv_key = EC_PRIVATEKEY_new()) == NULL)
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY,
- ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- priv_key->version = a->version;
-
- buf_len = (size_t)BN_num_bytes(a->priv_key);
- buffer = OPENSSL_malloc(buf_len);
- if (buffer == NULL)
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY,
- ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- if (!BN_bn2bin(a->priv_key, buffer))
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_BN_LIB);
- goto err;
- }
-
- if (!M_ASN1_OCTET_STRING_set(priv_key->privateKey, buffer, buf_len))
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_ASN1_LIB);
- goto err;
- }
-
- if (!(a->enc_flag & EC_PKEY_NO_PARAMETERS))
- {
- if ((priv_key->parameters = ec_asn1_group2pkparameters(
- a->group, priv_key->parameters)) == NULL)
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB);
- goto err;
- }
- }
-
- if (!(a->enc_flag & EC_PKEY_NO_PUBKEY))
- {
- priv_key->publicKey = M_ASN1_BIT_STRING_new();
- if (priv_key->publicKey == NULL)
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY,
- ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- tmp_len = EC_POINT_point2oct(a->group, a->pub_key,
- a->conv_form, NULL, 0, NULL);
-
- if (tmp_len > buf_len)
- {
- unsigned char *tmp_buffer = OPENSSL_realloc(buffer, tmp_len);
- if (!tmp_buffer)
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- buffer = tmp_buffer;
- buf_len = tmp_len;
- }
-
- if (!EC_POINT_point2oct(a->group, a->pub_key,
- a->conv_form, buffer, buf_len, NULL))
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB);
- goto err;
- }
-
- priv_key->publicKey->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07);
- priv_key->publicKey->flags |= ASN1_STRING_FLAG_BITS_LEFT;
- if (!M_ASN1_BIT_STRING_set(priv_key->publicKey, buffer,
- buf_len))
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_ASN1_LIB);
- goto err;
- }
- }
-
- if ((ret = i2d_EC_PRIVATEKEY(priv_key, out)) == 0)
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB);
- goto err;
- }
- ok=1;
-err:
- if (buffer)
- OPENSSL_free(buffer);
- if (priv_key)
- EC_PRIVATEKEY_free(priv_key);
- return(ok?ret:0);
- }
+{
+ EC_KEY *ret = NULL;
+ EC_PRIVATEKEY *priv_key = NULL;
+ const unsigned char *p = *in;
+
+ if ((priv_key = d2i_EC_PRIVATEKEY(NULL, &p, len)) == NULL) {
+ ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
+ return NULL;
+ }
+
+ if (a == NULL || *a == NULL) {
+ if ((ret = EC_KEY_new()) == NULL) {
+ ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ } else
+ ret = *a;
+
+ if (priv_key->parameters) {
+ EC_GROUP_clear_free(ret->group);
+ ret->group = EC_GROUP_new_from_ecpkparameters(priv_key->parameters);
+ }
+
+ if (ret->group == NULL) {
+ ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
+ goto err;
+ }
+
+ ret->version = priv_key->version;
+
+ if (priv_key->privateKey) {
+ ASN1_OCTET_STRING *pkey = priv_key->privateKey;
+ if (EC_KEY_oct2priv(ret, ASN1_STRING_get0_data(pkey),
+ ASN1_STRING_length(pkey)) == 0)
+ goto err;
+ } else {
+ ECerr(EC_F_D2I_ECPRIVATEKEY, EC_R_MISSING_PRIVATE_KEY);
+ goto err;
+ }
+
+ EC_POINT_clear_free(ret->pub_key);
+ ret->pub_key = EC_POINT_new(ret->group);
+ if (ret->pub_key == NULL) {
+ ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
+ goto err;
+ }
+
+ if (priv_key->publicKey) {
+ const unsigned char *pub_oct;
+ int pub_oct_len;
+
+ pub_oct = ASN1_STRING_get0_data(priv_key->publicKey);
+ pub_oct_len = ASN1_STRING_length(priv_key->publicKey);
+ if (!EC_KEY_oct2key(ret, pub_oct, pub_oct_len, NULL)) {
+ ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
+ goto err;
+ }
+ } else {
+ if (ret->group->meth->keygenpub == NULL
+ || ret->group->meth->keygenpub(ret) == 0)
+ goto err;
+ /* Remember the original private-key-only encoding. */
+ ret->enc_flag |= EC_PKEY_NO_PUBKEY;
+ }
+
+ if (a)
+ *a = ret;
+ EC_PRIVATEKEY_free(priv_key);
+ *in = p;
+ return ret;
+
+ err:
+ if (a == NULL || *a != ret)
+ EC_KEY_free(ret);
+ EC_PRIVATEKEY_free(priv_key);
+ return NULL;
+}
+
+int i2d_ECPrivateKey(EC_KEY *a, unsigned char **out)
+{
+ int ret = 0, ok = 0;
+ unsigned char *priv= NULL, *pub= NULL;
+ size_t privlen = 0, publen = 0;
+
+ EC_PRIVATEKEY *priv_key = NULL;
+
+ if (a == NULL || a->group == NULL ||
+ (!(a->enc_flag & EC_PKEY_NO_PUBKEY) && a->pub_key == NULL)) {
+ ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_PASSED_NULL_PARAMETER);
+ goto err;
+ }
+
+ if ((priv_key = EC_PRIVATEKEY_new()) == NULL) {
+ ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ priv_key->version = a->version;
+
+ privlen = EC_KEY_priv2buf(a, &priv);
+
+ if (privlen == 0) {
+ ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB);
+ goto err;
+ }
+
+ ASN1_STRING_set0(priv_key->privateKey, priv, privlen);
+ priv = NULL;
+
+ if (!(a->enc_flag & EC_PKEY_NO_PARAMETERS)) {
+ if ((priv_key->parameters =
+ EC_GROUP_get_ecpkparameters(a->group,
+ priv_key->parameters)) == NULL) {
+ ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB);
+ goto err;
+ }
+ }
+
+ if (!(a->enc_flag & EC_PKEY_NO_PUBKEY)) {
+ priv_key->publicKey = ASN1_BIT_STRING_new();
+ if (priv_key->publicKey == NULL) {
+ ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ publen = EC_KEY_key2buf(a, a->conv_form, &pub, NULL);
+
+ if (publen == 0) {
+ ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB);
+ goto err;
+ }
+
+ priv_key->publicKey->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
+ priv_key->publicKey->flags |= ASN1_STRING_FLAG_BITS_LEFT;
+ ASN1_STRING_set0(priv_key->publicKey, pub, publen);
+ pub = NULL;
+ }
+
+ if ((ret = i2d_EC_PRIVATEKEY(priv_key, out)) == 0) {
+ ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB);
+ goto err;
+ }
+ ok = 1;
+ err:
+ OPENSSL_clear_free(priv, privlen);
+ OPENSSL_free(pub);
+ EC_PRIVATEKEY_free(priv_key);
+ return (ok ? ret : 0);
+}
int i2d_ECParameters(EC_KEY *a, unsigned char **out)
- {
- if (a == NULL)
- {
- ECerr(EC_F_I2D_ECPARAMETERS, ERR_R_PASSED_NULL_PARAMETER);
- return 0;
- }
- return i2d_ECPKParameters(a->group, out);
- }
+{
+ if (a == NULL) {
+ ECerr(EC_F_I2D_ECPARAMETERS, ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+ return i2d_ECPKParameters(a->group, out);
+}
EC_KEY *d2i_ECParameters(EC_KEY **a, const unsigned char **in, long len)
- {
- EC_KEY *ret;
-
- if (in == NULL || *in == NULL)
- {
- ECerr(EC_F_D2I_ECPARAMETERS, ERR_R_PASSED_NULL_PARAMETER);
- return NULL;
- }
-
- if (a == NULL || *a == NULL)
- {
- if ((ret = EC_KEY_new()) == NULL)
- {
- ECerr(EC_F_D2I_ECPARAMETERS, ERR_R_MALLOC_FAILURE);
- return NULL;
- }
- if (a)
- *a = ret;
- }
- else
- ret = *a;
-
- if (!d2i_ECPKParameters(&ret->group, in, len))
- {
- ECerr(EC_F_D2I_ECPARAMETERS, ERR_R_EC_LIB);
- return NULL;
- }
-
- return ret;
- }
+{
+ EC_KEY *ret;
+
+ if (in == NULL || *in == NULL) {
+ ECerr(EC_F_D2I_ECPARAMETERS, ERR_R_PASSED_NULL_PARAMETER);
+ return NULL;
+ }
+
+ if (a == NULL || *a == NULL) {
+ if ((ret = EC_KEY_new()) == NULL) {
+ ECerr(EC_F_D2I_ECPARAMETERS, ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+ } else
+ ret = *a;
+
+ if (!d2i_ECPKParameters(&ret->group, in, len)) {
+ ECerr(EC_F_D2I_ECPARAMETERS, ERR_R_EC_LIB);
+ if (a == NULL || *a != ret)
+ EC_KEY_free(ret);
+ return NULL;
+ }
+
+ if (a)
+ *a = ret;
+
+ return ret;
+}
EC_KEY *o2i_ECPublicKey(EC_KEY **a, const unsigned char **in, long len)
- {
- EC_KEY *ret=NULL;
-
- if (a == NULL || (*a) == NULL || (*a)->group == NULL)
- {
- /* sorry, but a EC_GROUP-structur is necessary
- * to set the public key */
- ECerr(EC_F_O2I_ECPUBLICKEY, ERR_R_PASSED_NULL_PARAMETER);
- return 0;
- }
- ret = *a;
- if (ret->pub_key == NULL &&
- (ret->pub_key = EC_POINT_new(ret->group)) == NULL)
- {
- ECerr(EC_F_O2I_ECPUBLICKEY, ERR_R_MALLOC_FAILURE);
- return 0;
- }
- if (!EC_POINT_oct2point(ret->group, ret->pub_key, *in, len, NULL))
- {
- ECerr(EC_F_O2I_ECPUBLICKEY, ERR_R_EC_LIB);
- return 0;
- }
- /* save the point conversion form */
- ret->conv_form = (point_conversion_form_t)(*in[0] & ~0x01);
- *in += len;
- return ret;
- }
-
-int i2o_ECPublicKey(EC_KEY *a, unsigned char **out)
- {
- size_t buf_len=0;
- int new_buffer = 0;
-
- if (a == NULL)
- {
- ECerr(EC_F_I2O_ECPUBLICKEY, ERR_R_PASSED_NULL_PARAMETER);
- return 0;
- }
-
- buf_len = EC_POINT_point2oct(a->group, a->pub_key,
- a->conv_form, NULL, 0, NULL);
-
- if (out == NULL || buf_len == 0)
- /* out == NULL => just return the length of the octet string */
- return buf_len;
-
- if (*out == NULL)
- {
- if ((*out = OPENSSL_malloc(buf_len)) == NULL)
- {
- ECerr(EC_F_I2O_ECPUBLICKEY, ERR_R_MALLOC_FAILURE);
- return 0;
- }
- new_buffer = 1;
- }
- if (!EC_POINT_point2oct(a->group, a->pub_key, a->conv_form,
- *out, buf_len, NULL))
- {
- ECerr(EC_F_I2O_ECPUBLICKEY, ERR_R_EC_LIB);
- if (new_buffer)
- {
- OPENSSL_free(*out);
- *out = NULL;
- }
- return 0;
- }
- if (!new_buffer)
- *out += buf_len;
- return buf_len;
- }
+{
+ EC_KEY *ret = NULL;
+
+ if (a == NULL || (*a) == NULL || (*a)->group == NULL) {
+ /*
+ * sorry, but a EC_GROUP-structure is necessary to set the public key
+ */
+ ECerr(EC_F_O2I_ECPUBLICKEY, ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+ ret = *a;
+ if (!EC_KEY_oct2key(ret, *in, len, NULL)) {
+ ECerr(EC_F_O2I_ECPUBLICKEY, ERR_R_EC_LIB);
+ return 0;
+ }
+ *in += len;
+ return ret;
+}
+
+int i2o_ECPublicKey(const EC_KEY *a, unsigned char **out)
+{
+ size_t buf_len = 0;
+ int new_buffer = 0;
+
+ if (a == NULL) {
+ ECerr(EC_F_I2O_ECPUBLICKEY, ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+
+ buf_len = EC_POINT_point2oct(a->group, a->pub_key,
+ a->conv_form, NULL, 0, NULL);
+
+ if (out == NULL || buf_len == 0)
+ /* out == NULL => just return the length of the octet string */
+ return buf_len;
+
+ if (*out == NULL) {
+ if ((*out = OPENSSL_malloc(buf_len)) == NULL) {
+ ECerr(EC_F_I2O_ECPUBLICKEY, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ new_buffer = 1;
+ }
+ if (!EC_POINT_point2oct(a->group, a->pub_key, a->conv_form,
+ *out, buf_len, NULL)) {
+ ECerr(EC_F_I2O_ECPUBLICKEY, ERR_R_EC_LIB);
+ if (new_buffer) {
+ OPENSSL_free(*out);
+ *out = NULL;
+ }
+ return 0;
+ }
+ if (!new_buffer)
+ *out += buf_len;
+ return buf_len;
+}
+
+ASN1_SEQUENCE(ECDSA_SIG) = {
+ ASN1_SIMPLE(ECDSA_SIG, r, CBIGNUM),
+ ASN1_SIMPLE(ECDSA_SIG, s, CBIGNUM)
+} static_ASN1_SEQUENCE_END(ECDSA_SIG)
+
+DECLARE_ASN1_FUNCTIONS_const(ECDSA_SIG)
+DECLARE_ASN1_ENCODE_FUNCTIONS_const(ECDSA_SIG, ECDSA_SIG)
+IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(ECDSA_SIG, ECDSA_SIG, ECDSA_SIG)
+
+ECDSA_SIG *ECDSA_SIG_new(void)
+{
+ ECDSA_SIG *sig = OPENSSL_zalloc(sizeof(*sig));
+ if (sig == NULL)
+ ECerr(EC_F_ECDSA_SIG_NEW, ERR_R_MALLOC_FAILURE);
+ return sig;
+}
+
+void ECDSA_SIG_free(ECDSA_SIG *sig)
+{
+ if (sig == NULL)
+ return;
+ BN_clear_free(sig->r);
+ BN_clear_free(sig->s);
+ OPENSSL_free(sig);
+}
+
+void ECDSA_SIG_get0(const ECDSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps)
+{
+ if (pr != NULL)
+ *pr = sig->r;
+ if (ps != NULL)
+ *ps = sig->s;
+}
+
+int ECDSA_SIG_set0(ECDSA_SIG *sig, BIGNUM *r, BIGNUM *s)
+{
+ if (r == NULL || s == NULL)
+ return 0;
+ BN_clear_free(sig->r);
+ BN_clear_free(sig->s);
+ sig->r = r;
+ sig->s = s;
+ return 1;
+}
+
+int ECDSA_size(const EC_KEY *r)
+{
+ int ret, i;
+ ASN1_INTEGER bs;
+ unsigned char buf[4];
+ const EC_GROUP *group;
+
+ if (r == NULL)
+ return 0;
+ group = EC_KEY_get0_group(r);
+ if (group == NULL)
+ return 0;
+
+ i = EC_GROUP_order_bits(group);
+ if (i == 0)
+ return 0;
+ bs.length = (i + 7) / 8;
+ bs.data = buf;
+ bs.type = V_ASN1_INTEGER;
+ /* If the top bit is set the asn1 encoding is 1 larger. */
+ buf[0] = 0xff;
+
+ i = i2d_ASN1_INTEGER(&bs, NULL);
+ i += i; /* r and s */
+ ret = ASN1_object_size(1, i, V_ASN1_SEQUENCE);
+ return ret;
+}
projects / openssl.git / blobdiff