diff options
Diffstat (limited to 'thirdparty/openssl/crypto/ec/ec_asn1.c')
| -rw-r--r-- | thirdparty/openssl/crypto/ec/ec_asn1.c | 1331 |
1 files changed, 0 insertions, 1331 deletions
diff --git a/thirdparty/openssl/crypto/ec/ec_asn1.c b/thirdparty/openssl/crypto/ec/ec_asn1.c deleted file mode 100644 index b0cd3e1788..0000000000 --- a/thirdparty/openssl/crypto/ec/ec_asn1.c +++ /dev/null @@ -1,1331 +0,0 @@ -/* 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). - * - */ - -#include <string.h> -#include "ec_lcl.h" -#include <openssl/err.h> -#include <openssl/asn1t.h> -#include <openssl/objects.h> - -#define OSSL_NELEM(x) (sizeof(x)/sizeof(x[0])) - -int EC_GROUP_get_basis_type(const EC_GROUP *group) -{ - 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; -} - -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; -} -#endif - -/* some structures needed for the asn1 encoding */ -typedef struct x9_62_pentanomial_st { - long k1; - long k2; - long 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; - -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; - -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; - -struct ecpk_parameters_st { - 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; - -/* 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) - -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)) -} 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) - -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)) -} 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_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_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_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_CHOICE_END(ECPKPARAMETERS) - -DECLARE_ASN1_FUNCTIONS_const(ECPKPARAMETERS) -DECLARE_ASN1_ENCODE_FUNCTIONS_const(ECPKPARAMETERS, 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) - -DECLARE_ASN1_FUNCTIONS_const(EC_PRIVATEKEY) -DECLARE_ASN1_ENCODE_FUNCTIONS_const(EC_PRIVATEKEY, EC_PRIVATEKEY) -IMPLEMENT_ASN1_FUNCTIONS_const(EC_PRIVATEKEY) - -/* some declarations of internal function */ - -/* 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 */ -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 */ -#ifdef OPENSSL_NO_EC2M - { - 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; - } - } - } -#endif - - ok = 1; - - err:if (tmp) - 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; - } - } -#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; - } - } -#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) -#ifdef OPENSSL_NO_EC2M - { - ECerr(EC_F_EC_ASN1_PARAMETERS2GROUP, 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); - } -#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); -} - -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 <-> DER encoding of ECPKPARAMETERS */ - -EC_GROUP *d2i_ECPKParameters(EC_GROUP **a, const unsigned char **in, long len) -{ - 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_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); - *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); -} - -/* 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; - 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) { - 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; - } - - if (a) - *a = ret; - *in = p; - ok = 1; - err: - if (!ok) { - if (ret && (a == NULL || *a != 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, bn_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; - - bn_len = (size_t)BN_num_bytes(a->priv_key); - - /* Octetstring may need leading zeros if BN is to short */ - - buf_len = (EC_GROUP_get_degree(a->group) + 7) / 8; - - if (bn_len > buf_len) { - ECerr(EC_F_I2D_ECPRIVATEKEY, EC_R_BUFFER_TOO_SMALL); - goto err; - } - - 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 + buf_len - bn_len)) { - ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_BN_LIB); - goto err; - } - - if (buf_len - bn_len > 0) { - memset(buffer, 0, buf_len - bn_len); - } - - 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); -} - -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); -} - -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; - } - } 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; -} |