diff options
author | Matt Caswell <matt@openssl.org> | 2015-01-22 03:40:55 +0000 |
---|---|---|
committer | Matt Caswell <matt@openssl.org> | 2015-01-22 09:20:09 +0000 |
commit | 0f113f3ee4d629ef9a4a30911b22b224772085e5 (patch) | |
tree | e014603da5aed1d0751f587a66d6e270b6bda3de /crypto/ec/ec_lib.c | |
parent | 22b52164aaed31d6e93dbd2d397ace041360e6aa (diff) |
Run util/openssl-format-source -v -c .
Reviewed-by: Tim Hudson <tjh@openssl.org>
Diffstat (limited to 'crypto/ec/ec_lib.c')
-rw-r--r-- | crypto/ec/ec_lib.c | 1884 |
1 files changed, 922 insertions, 962 deletions
diff --git a/crypto/ec/ec_lib.c b/crypto/ec/ec_lib.c index a553740dee..cc3dd35077 100644 --- a/crypto/ec/ec_lib.c +++ b/crypto/ec/ec_lib.c @@ -10,7 +10,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * 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 @@ -57,12 +57,10 @@ */ /* ==================================================================== * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. - * Binary polynomial ECC support in OpenSSL originally developed by + * Binary polynomial ECC support in OpenSSL originally developed by * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. */ - - #include <string.h> #include <openssl/err.h> @@ -72,1102 +70,1064 @@ const char EC_version[] = "EC" OPENSSL_VERSION_PTEXT; - /* functions for EC_GROUP objects */ EC_GROUP *EC_GROUP_new(const EC_METHOD *meth) - { - EC_GROUP *ret; - - if (meth == NULL) - { - ECerr(EC_F_EC_GROUP_NEW, EC_R_SLOT_FULL); - return NULL; - } - if (meth->group_init == 0) - { - ECerr(EC_F_EC_GROUP_NEW, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return NULL; - } - - ret = OPENSSL_malloc(sizeof *ret); - if (ret == NULL) - { - ECerr(EC_F_EC_GROUP_NEW, ERR_R_MALLOC_FAILURE); - return NULL; - } - - ret->meth = meth; - - ret->extra_data = NULL; - ret->mont_data = NULL; - - ret->generator = NULL; - ret->order = BN_new(); - ret->cofactor = NULL; - if(!ret->order) goto err; - ret->cofactor = BN_new(); - if(!ret->cofactor) goto err; - - ret->curve_name = 0; - ret->asn1_flag = 0; - ret->asn1_form = POINT_CONVERSION_UNCOMPRESSED; - - ret->seed = NULL; - ret->seed_len = 0; - - if (!meth->group_init(ret)) goto err; - - return ret; -err: - if(ret->order) BN_free(ret->order); - if(ret->cofactor) BN_free(ret->cofactor); - OPENSSL_free(ret); - return NULL; - } - +{ + EC_GROUP *ret; + + if (meth == NULL) { + ECerr(EC_F_EC_GROUP_NEW, EC_R_SLOT_FULL); + return NULL; + } + if (meth->group_init == 0) { + ECerr(EC_F_EC_GROUP_NEW, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return NULL; + } + + ret = OPENSSL_malloc(sizeof *ret); + if (ret == NULL) { + ECerr(EC_F_EC_GROUP_NEW, ERR_R_MALLOC_FAILURE); + return NULL; + } + + ret->meth = meth; + + ret->extra_data = NULL; + ret->mont_data = NULL; + + ret->generator = NULL; + ret->order = BN_new(); + ret->cofactor = NULL; + if (!ret->order) + goto err; + ret->cofactor = BN_new(); + if (!ret->cofactor) + goto err; + + ret->curve_name = 0; + ret->asn1_flag = 0; + ret->asn1_form = POINT_CONVERSION_UNCOMPRESSED; + + ret->seed = NULL; + ret->seed_len = 0; + + if (!meth->group_init(ret)) + goto err; + + return ret; + err: + if (ret->order) + BN_free(ret->order); + if (ret->cofactor) + BN_free(ret->cofactor); + OPENSSL_free(ret); + return NULL; +} void EC_GROUP_free(EC_GROUP *group) - { - if (!group) return; +{ + if (!group) + return; - if (group->meth->group_finish != 0) - group->meth->group_finish(group); + if (group->meth->group_finish != 0) + group->meth->group_finish(group); - EC_EX_DATA_free_all_data(&group->extra_data); + EC_EX_DATA_free_all_data(&group->extra_data); - if (group->mont_data) - BN_MONT_CTX_free(group->mont_data); + if (group->mont_data) + BN_MONT_CTX_free(group->mont_data); - if (group->generator != NULL) - EC_POINT_free(group->generator); - BN_free(group->order); - BN_free(group->cofactor); + if (group->generator != NULL) + EC_POINT_free(group->generator); + BN_free(group->order); + BN_free(group->cofactor); - if (group->seed) - OPENSSL_free(group->seed); + if (group->seed) + OPENSSL_free(group->seed); - OPENSSL_free(group); - } - + OPENSSL_free(group); +} void EC_GROUP_clear_free(EC_GROUP *group) - { - if (!group) return; - - if (group->meth->group_clear_finish != 0) - group->meth->group_clear_finish(group); - else if (group->meth->group_finish != 0) - group->meth->group_finish(group); +{ + if (!group) + return; - EC_EX_DATA_clear_free_all_data(&group->extra_data); + if (group->meth->group_clear_finish != 0) + group->meth->group_clear_finish(group); + else if (group->meth->group_finish != 0) + group->meth->group_finish(group); - if (group->mont_data) - BN_MONT_CTX_free(group->mont_data); + EC_EX_DATA_clear_free_all_data(&group->extra_data); - if (group->generator != NULL) - EC_POINT_clear_free(group->generator); - BN_clear_free(group->order); - BN_clear_free(group->cofactor); + if (group->mont_data) + BN_MONT_CTX_free(group->mont_data); - if (group->seed) - { - OPENSSL_cleanse(group->seed, group->seed_len); - OPENSSL_free(group->seed); - } + if (group->generator != NULL) + EC_POINT_clear_free(group->generator); + BN_clear_free(group->order); + BN_clear_free(group->cofactor); - OPENSSL_cleanse(group, sizeof *group); - OPENSSL_free(group); - } + if (group->seed) { + OPENSSL_cleanse(group->seed, group->seed_len); + OPENSSL_free(group->seed); + } + OPENSSL_cleanse(group, sizeof *group); + OPENSSL_free(group); +} int EC_GROUP_copy(EC_GROUP *dest, const EC_GROUP *src) - { - EC_EXTRA_DATA *d; - - if (dest->meth->group_copy == 0) - { - ECerr(EC_F_EC_GROUP_COPY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - if (dest->meth != src->meth) - { - ECerr(EC_F_EC_GROUP_COPY, EC_R_INCOMPATIBLE_OBJECTS); - return 0; - } - if (dest == src) - return 1; - - EC_EX_DATA_free_all_data(&dest->extra_data); - - for (d = src->extra_data; d != NULL; d = d->next) - { - void *t = d->dup_func(d->data); - - if (t == NULL) - return 0; - if (!EC_EX_DATA_set_data(&dest->extra_data, t, d->dup_func, d->free_func, d->clear_free_func)) - return 0; - } - - if (src->mont_data != NULL) - { - if (dest->mont_data == NULL) - { - dest->mont_data = BN_MONT_CTX_new(); - if (dest->mont_data == NULL) return 0; - } - if (!BN_MONT_CTX_copy(dest->mont_data, src->mont_data)) return 0; - } - else - { - /* src->generator == NULL */ - if (dest->mont_data != NULL) - { - BN_MONT_CTX_free(dest->mont_data); - dest->mont_data = NULL; - } - } - - if (src->generator != NULL) - { - if (dest->generator == NULL) - { - dest->generator = EC_POINT_new(dest); - if (dest->generator == NULL) return 0; - } - if (!EC_POINT_copy(dest->generator, src->generator)) return 0; - } - else - { - /* src->generator == NULL */ - if (dest->generator != NULL) - { - EC_POINT_clear_free(dest->generator); - dest->generator = NULL; - } - } - - if (!BN_copy(dest->order, src->order)) return 0; - if (!BN_copy(dest->cofactor, src->cofactor)) return 0; - - dest->curve_name = src->curve_name; - dest->asn1_flag = src->asn1_flag; - dest->asn1_form = src->asn1_form; - - if (src->seed) - { - if (dest->seed) - OPENSSL_free(dest->seed); - dest->seed = OPENSSL_malloc(src->seed_len); - if (dest->seed == NULL) - return 0; - if (!memcpy(dest->seed, src->seed, src->seed_len)) - return 0; - dest->seed_len = src->seed_len; - } - else - { - if (dest->seed) - OPENSSL_free(dest->seed); - dest->seed = NULL; - dest->seed_len = 0; - } - - - return dest->meth->group_copy(dest, src); - } +{ + EC_EXTRA_DATA *d; + + if (dest->meth->group_copy == 0) { + ECerr(EC_F_EC_GROUP_COPY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + if (dest->meth != src->meth) { + ECerr(EC_F_EC_GROUP_COPY, EC_R_INCOMPATIBLE_OBJECTS); + return 0; + } + if (dest == src) + return 1; + + EC_EX_DATA_free_all_data(&dest->extra_data); + + for (d = src->extra_data; d != NULL; d = d->next) { + void *t = d->dup_func(d->data); + + if (t == NULL) + return 0; + if (!EC_EX_DATA_set_data + (&dest->extra_data, t, d->dup_func, d->free_func, + d->clear_free_func)) + return 0; + } + + if (src->mont_data != NULL) { + if (dest->mont_data == NULL) { + dest->mont_data = BN_MONT_CTX_new(); + if (dest->mont_data == NULL) + return 0; + } + if (!BN_MONT_CTX_copy(dest->mont_data, src->mont_data)) + return 0; + } else { + /* src->generator == NULL */ + if (dest->mont_data != NULL) { + BN_MONT_CTX_free(dest->mont_data); + dest->mont_data = NULL; + } + } + if (src->generator != NULL) { + if (dest->generator == NULL) { + dest->generator = EC_POINT_new(dest); + if (dest->generator == NULL) + return 0; + } + if (!EC_POINT_copy(dest->generator, src->generator)) + return 0; + } else { + /* src->generator == NULL */ + if (dest->generator != NULL) { + EC_POINT_clear_free(dest->generator); + dest->generator = NULL; + } + } + + if (!BN_copy(dest->order, src->order)) + return 0; + if (!BN_copy(dest->cofactor, src->cofactor)) + return 0; + + dest->curve_name = src->curve_name; + dest->asn1_flag = src->asn1_flag; + dest->asn1_form = src->asn1_form; + + if (src->seed) { + if (dest->seed) + OPENSSL_free(dest->seed); + dest->seed = OPENSSL_malloc(src->seed_len); + if (dest->seed == NULL) + return 0; + if (!memcpy(dest->seed, src->seed, src->seed_len)) + return 0; + dest->seed_len = src->seed_len; + } else { + if (dest->seed) + OPENSSL_free(dest->seed); + dest->seed = NULL; + dest->seed_len = 0; + } + + return dest->meth->group_copy(dest, src); +} EC_GROUP *EC_GROUP_dup(const EC_GROUP *a) - { - EC_GROUP *t = NULL; - int ok = 0; +{ + EC_GROUP *t = NULL; + int ok = 0; - if (a == NULL) return NULL; + if (a == NULL) + return NULL; - if ((t = EC_GROUP_new(a->meth)) == NULL) return(NULL); - if (!EC_GROUP_copy(t, a)) goto err; + if ((t = EC_GROUP_new(a->meth)) == NULL) + return (NULL); + if (!EC_GROUP_copy(t, a)) + goto err; - ok = 1; - - err: - if (!ok) - { - if (t) EC_GROUP_free(t); - return NULL; - } - else return t; - } + ok = 1; + err: + if (!ok) { + if (t) + EC_GROUP_free(t); + return NULL; + } else + return t; +} const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group) - { - return group->meth; - } - +{ + return group->meth; +} int EC_METHOD_get_field_type(const EC_METHOD *meth) - { - return meth->field_type; - } - - -int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator, const BIGNUM *order, const BIGNUM *cofactor) - { - if (generator == NULL) - { - ECerr(EC_F_EC_GROUP_SET_GENERATOR, ERR_R_PASSED_NULL_PARAMETER); - return 0 ; - } - - if (group->generator == NULL) - { - group->generator = EC_POINT_new(group); - if (group->generator == NULL) return 0; - } - if (!EC_POINT_copy(group->generator, generator)) return 0; - - if (order != NULL) - { if (!BN_copy(group->order, order)) return 0; } - else - BN_zero(group->order); - - if (cofactor != NULL) - { if (!BN_copy(group->cofactor, cofactor)) return 0; } - else - BN_zero(group->cofactor); - - /* We ignore the return value because some groups have an order with - * factors of two, which makes the Montgomery setup fail. - * |group->mont_data| will be NULL in this case. */ - ec_precompute_mont_data(group); - - return 1; - } - +{ + return meth->field_type; +} + +int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator, + const BIGNUM *order, const BIGNUM *cofactor) +{ + if (generator == NULL) { + ECerr(EC_F_EC_GROUP_SET_GENERATOR, ERR_R_PASSED_NULL_PARAMETER); + return 0; + } + + if (group->generator == NULL) { + group->generator = EC_POINT_new(group); + if (group->generator == NULL) + return 0; + } + if (!EC_POINT_copy(group->generator, generator)) + return 0; + + if (order != NULL) { + if (!BN_copy(group->order, order)) + return 0; + } else + BN_zero(group->order); + + if (cofactor != NULL) { + if (!BN_copy(group->cofactor, cofactor)) + return 0; + } else + BN_zero(group->cofactor); + + /* + * We ignore the return value because some groups have an order with + * factors of two, which makes the Montgomery setup fail. + * |group->mont_data| will be NULL in this case. + */ + ec_precompute_mont_data(group); + + return 1; +} const EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group) - { - return group->generator; - } +{ + return group->generator; +} BN_MONT_CTX *EC_GROUP_get_mont_data(const EC_GROUP *group) - { - return group->mont_data; - } +{ + return group->mont_data; +} int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx) - { - if (!BN_copy(order, group->order)) - return 0; - - return !BN_is_zero(order); - } +{ + if (!BN_copy(order, group->order)) + return 0; + return !BN_is_zero(order); +} -int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor, BN_CTX *ctx) - { - if (!BN_copy(cofactor, group->cofactor)) - return 0; - - return !BN_is_zero(group->cofactor); - } +int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor, + BN_CTX *ctx) +{ + if (!BN_copy(cofactor, group->cofactor)) + return 0; + return !BN_is_zero(group->cofactor); +} void EC_GROUP_set_curve_name(EC_GROUP *group, int nid) - { - group->curve_name = nid; - } - +{ + group->curve_name = nid; +} int EC_GROUP_get_curve_name(const EC_GROUP *group) - { - return group->curve_name; - } - +{ + return group->curve_name; +} void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag) - { - group->asn1_flag = flag; - } - +{ + group->asn1_flag = flag; +} int EC_GROUP_get_asn1_flag(const EC_GROUP *group) - { - return group->asn1_flag; - } - +{ + return group->asn1_flag; +} -void EC_GROUP_set_point_conversion_form(EC_GROUP *group, +void EC_GROUP_set_point_conversion_form(EC_GROUP *group, point_conversion_form_t form) - { - group->asn1_form = form; - } - - -point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP *group) - { - return group->asn1_form; - } +{ + group->asn1_form = form; +} +point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP + *group) +{ + return group->asn1_form; +} size_t EC_GROUP_set_seed(EC_GROUP *group, const unsigned char *p, size_t len) - { - if (group->seed) - { - OPENSSL_free(group->seed); - group->seed = NULL; - group->seed_len = 0; - } - - if (!len || !p) - return 1; +{ + if (group->seed) { + OPENSSL_free(group->seed); + group->seed = NULL; + group->seed_len = 0; + } - if ((group->seed = OPENSSL_malloc(len)) == NULL) - return 0; - memcpy(group->seed, p, len); - group->seed_len = len; + if (!len || !p) + return 1; - return len; - } + if ((group->seed = OPENSSL_malloc(len)) == NULL) + return 0; + memcpy(group->seed, p, len); + group->seed_len = len; + return len; +} unsigned char *EC_GROUP_get0_seed(const EC_GROUP *group) - { - return group->seed; - } - +{ + return group->seed; +} size_t EC_GROUP_get_seed_len(const EC_GROUP *group) - { - return group->seed_len; - } - - -int EC_GROUP_set_curve_GFp(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) - { - if (group->meth->group_set_curve == 0) - { - ECerr(EC_F_EC_GROUP_SET_CURVE_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - return group->meth->group_set_curve(group, p, a, b, ctx); - } - - -int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, BIGNUM *b, BN_CTX *ctx) - { - if (group->meth->group_get_curve == 0) - { - ECerr(EC_F_EC_GROUP_GET_CURVE_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - return group->meth->group_get_curve(group, p, a, b, ctx); - } +{ + return group->seed_len; +} + +int EC_GROUP_set_curve_GFp(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, + const BIGNUM *b, BN_CTX *ctx) +{ + if (group->meth->group_set_curve == 0) { + ECerr(EC_F_EC_GROUP_SET_CURVE_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + return group->meth->group_set_curve(group, p, a, b, ctx); +} + +int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, + BIGNUM *b, BN_CTX *ctx) +{ + if (group->meth->group_get_curve == 0) { + ECerr(EC_F_EC_GROUP_GET_CURVE_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + return group->meth->group_get_curve(group, p, a, b, ctx); +} #ifndef OPENSSL_NO_EC2M -int EC_GROUP_set_curve_GF2m(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) - { - if (group->meth->group_set_curve == 0) - { - ECerr(EC_F_EC_GROUP_SET_CURVE_GF2M, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - return group->meth->group_set_curve(group, p, a, b, ctx); - } - - -int EC_GROUP_get_curve_GF2m(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, BIGNUM *b, BN_CTX *ctx) - { - if (group->meth->group_get_curve == 0) - { - ECerr(EC_F_EC_GROUP_GET_CURVE_GF2M, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - return group->meth->group_get_curve(group, p, a, b, ctx); - } +int EC_GROUP_set_curve_GF2m(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, + const BIGNUM *b, BN_CTX *ctx) +{ + if (group->meth->group_set_curve == 0) { + ECerr(EC_F_EC_GROUP_SET_CURVE_GF2M, + ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + return group->meth->group_set_curve(group, p, a, b, ctx); +} + +int EC_GROUP_get_curve_GF2m(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, + BIGNUM *b, BN_CTX *ctx) +{ + if (group->meth->group_get_curve == 0) { + ECerr(EC_F_EC_GROUP_GET_CURVE_GF2M, + ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + return group->meth->group_get_curve(group, p, a, b, ctx); +} #endif int EC_GROUP_get_degree(const EC_GROUP *group) - { - if (group->meth->group_get_degree == 0) - { - ECerr(EC_F_EC_GROUP_GET_DEGREE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - return group->meth->group_get_degree(group); - } - +{ + if (group->meth->group_get_degree == 0) { + ECerr(EC_F_EC_GROUP_GET_DEGREE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + return group->meth->group_get_degree(group); +} int EC_GROUP_check_discriminant(const EC_GROUP *group, BN_CTX *ctx) - { - if (group->meth->group_check_discriminant == 0) - { - ECerr(EC_F_EC_GROUP_CHECK_DISCRIMINANT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - return group->meth->group_check_discriminant(group, ctx); - } - +{ + if (group->meth->group_check_discriminant == 0) { + ECerr(EC_F_EC_GROUP_CHECK_DISCRIMINANT, + ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + return group->meth->group_check_discriminant(group, ctx); +} int EC_GROUP_cmp(const EC_GROUP *a, const EC_GROUP *b, BN_CTX *ctx) - { - int r = 0; - BIGNUM *a1, *a2, *a3, *b1, *b2, *b3; - BN_CTX *ctx_new = NULL; - - /* compare the field types*/ - if (EC_METHOD_get_field_type(EC_GROUP_method_of(a)) != - EC_METHOD_get_field_type(EC_GROUP_method_of(b))) - return 1; - /* compare the curve name (if present in both) */ - if (EC_GROUP_get_curve_name(a) && EC_GROUP_get_curve_name(b) && - EC_GROUP_get_curve_name(a) != EC_GROUP_get_curve_name(b)) - return 1; - - if (!ctx) - ctx_new = ctx = BN_CTX_new(); - if (!ctx) - return -1; - - BN_CTX_start(ctx); - a1 = BN_CTX_get(ctx); - a2 = BN_CTX_get(ctx); - a3 = BN_CTX_get(ctx); - b1 = BN_CTX_get(ctx); - b2 = BN_CTX_get(ctx); - b3 = BN_CTX_get(ctx); - if (!b3) - { - BN_CTX_end(ctx); - if (ctx_new) - BN_CTX_free(ctx); - return -1; - } - - /* XXX This approach assumes that the external representation - * of curves over the same field type is the same. - */ - if (!a->meth->group_get_curve(a, a1, a2, a3, ctx) || - !b->meth->group_get_curve(b, b1, b2, b3, ctx)) - r = 1; - - if (r || BN_cmp(a1, b1) || BN_cmp(a2, b2) || BN_cmp(a3, b3)) - r = 1; - - /* XXX EC_POINT_cmp() assumes that the methods are equal */ - if (r || EC_POINT_cmp(a, EC_GROUP_get0_generator(a), - EC_GROUP_get0_generator(b), ctx)) - r = 1; - - if (!r) - { - /* compare the order and cofactor */ - if (!EC_GROUP_get_order(a, a1, ctx) || - !EC_GROUP_get_order(b, b1, ctx) || - !EC_GROUP_get_cofactor(a, a2, ctx) || - !EC_GROUP_get_cofactor(b, b2, ctx)) - { - BN_CTX_end(ctx); - if (ctx_new) - BN_CTX_free(ctx); - return -1; - } - if (BN_cmp(a1, b1) || BN_cmp(a2, b2)) - r = 1; - } - - BN_CTX_end(ctx); - if (ctx_new) - BN_CTX_free(ctx); - - return r; - } +{ + int r = 0; + BIGNUM *a1, *a2, *a3, *b1, *b2, *b3; + BN_CTX *ctx_new = NULL; + + /* compare the field types */ + if (EC_METHOD_get_field_type(EC_GROUP_method_of(a)) != + EC_METHOD_get_field_type(EC_GROUP_method_of(b))) + return 1; + /* compare the curve name (if present in both) */ + if (EC_GROUP_get_curve_name(a) && EC_GROUP_get_curve_name(b) && + EC_GROUP_get_curve_name(a) != EC_GROUP_get_curve_name(b)) + return 1; + + if (!ctx) + ctx_new = ctx = BN_CTX_new(); + if (!ctx) + return -1; + + BN_CTX_start(ctx); + a1 = BN_CTX_get(ctx); + a2 = BN_CTX_get(ctx); + a3 = BN_CTX_get(ctx); + b1 = BN_CTX_get(ctx); + b2 = BN_CTX_get(ctx); + b3 = BN_CTX_get(ctx); + if (!b3) { + BN_CTX_end(ctx); + if (ctx_new) + BN_CTX_free(ctx); + return -1; + } + + /* + * XXX This approach assumes that the external representation of curves + * over the same field type is the same. + */ + if (!a->meth->group_get_curve(a, a1, a2, a3, ctx) || + !b->meth->group_get_curve(b, b1, b2, b3, ctx)) + r = 1; + + if (r || BN_cmp(a1, b1) || BN_cmp(a2, b2) || BN_cmp(a3, b3)) + r = 1; + + /* XXX EC_POINT_cmp() assumes that the methods are equal */ + if (r || EC_POINT_cmp(a, EC_GROUP_get0_generator(a), + EC_GROUP_get0_generator(b), ctx)) + r = 1; + + if (!r) { + /* compare the order and cofactor */ + if (!EC_GROUP_get_order(a, a1, ctx) || + !EC_GROUP_get_order(b, b1, ctx) || + !EC_GROUP_get_cofactor(a, a2, ctx) || + !EC_GROUP_get_cofactor(b, b2, ctx)) { + BN_CTX_end(ctx); + if (ctx_new) + BN_CTX_free(ctx); + return -1; + } + if (BN_cmp(a1, b1) || BN_cmp(a2, b2)) + r = 1; + } + + BN_CTX_end(ctx); + if (ctx_new) + BN_CTX_free(ctx); + return r; +} /* this has 'package' visibility */ int EC_EX_DATA_set_data(EC_EXTRA_DATA **ex_data, void *data, - void *(*dup_func)(void *), void (*free_func)(void *), void (*clear_free_func)(void *)) - { - EC_EXTRA_DATA *d; - - if (ex_data == NULL) - return 0; - - for (d = *ex_data; d != NULL; d = d->next) - { - if (d->dup_func == dup_func && d->free_func == free_func && d->clear_free_func == clear_free_func) - { - ECerr(EC_F_EC_EX_DATA_SET_DATA, EC_R_SLOT_FULL); - return 0; - } - } + void *(*dup_func) (void *), + void (*free_func) (void *), + void (*clear_free_func) (void *)) +{ + EC_EXTRA_DATA *d; + + if (ex_data == NULL) + return 0; + + for (d = *ex_data; d != NULL; d = d->next) { + if (d->dup_func == dup_func && d->free_func == free_func + && d->clear_free_func == clear_free_func) { + ECerr(EC_F_EC_EX_DATA_SET_DATA, EC_R_SLOT_FULL); + return 0; + } + } - if (data == NULL) - /* no explicit entry needed */ - return 1; + if (data == NULL) + /* no explicit entry needed */ + return 1; - d = OPENSSL_malloc(sizeof *d); - if (d == NULL) - return 0; + d = OPENSSL_malloc(sizeof *d); + if (d == NULL) + return 0; - d->data = data; - d->dup_func = dup_func; - d->free_func = free_func; - d->clear_free_func = clear_free_func; + d->data = data; + d->dup_func = dup_func; + d->free_func = free_func; + d->clear_free_func = clear_free_func; - d->next = *ex_data; - *ex_data = d; + d->next = *ex_data; + *ex_data = d; - return 1; - } + return 1; +} /* this has 'package' visibility */ void *EC_EX_DATA_get_data(const EC_EXTRA_DATA *ex_data, - void *(*dup_func)(void *), void (*free_func)(void *), void (*clear_free_func)(void *)) - { - const EC_EXTRA_DATA *d; - - for (d = ex_data; d != NULL; d = d->next) - { - if (d->dup_func == dup_func && d->free_func == free_func && d->clear_free_func == clear_free_func) - return d->data; - } - - return NULL; - } + void *(*dup_func) (void *), + void (*free_func) (void *), + void (*clear_free_func) (void *)) +{ + const EC_EXTRA_DATA *d; + + for (d = ex_data; d != NULL; d = d->next) { + if (d->dup_func == dup_func && d->free_func == free_func + && d->clear_free_func == clear_free_func) + return d->data; + } + + return NULL; +} /* this has 'package' visibility */ void EC_EX_DATA_free_data(EC_EXTRA_DATA **ex_data, - void *(*dup_func)(void *), void (*free_func)(void *), void (*clear_free_func)(void *)) - { - EC_EXTRA_DATA **p; - - if (ex_data == NULL) - return; - - for (p = ex_data; *p != NULL; p = &((*p)->next)) - { - if ((*p)->dup_func == dup_func && (*p)->free_func == free_func && (*p)->clear_free_func == clear_free_func) - { - EC_EXTRA_DATA *next = (*p)->next; - - (*p)->free_func((*p)->data); - OPENSSL_free(*p); - - *p = next; - return; - } - } - } + void *(*dup_func) (void *), + void (*free_func) (void *), + void (*clear_free_func) (void *)) +{ + EC_EXTRA_DATA **p; + + if (ex_data == NULL) + return; + + for (p = ex_data; *p != NULL; p = &((*p)->next)) { + if ((*p)->dup_func == dup_func && (*p)->free_func == free_func + && (*p)->clear_free_func == clear_free_func) { + EC_EXTRA_DATA *next = (*p)->next; + + (*p)->free_func((*p)->data); + OPENSSL_free(*p); + + *p = next; + return; + } + } +} /* this has 'package' visibility */ void EC_EX_DATA_clear_free_data(EC_EXTRA_DATA **ex_data, - void *(*dup_func)(void *), void (*free_func)(void *), void (*clear_free_func)(void *)) - { - EC_EXTRA_DATA **p; - - if (ex_data == NULL) - return; - - for (p = ex_data; *p != NULL; p = &((*p)->next)) - { - if ((*p)->dup_func == dup_func && (*p)->free_func == free_func && (*p)->clear_free_func == clear_free_func) - { - EC_EXTRA_DATA *next = (*p)->next; - - (*p)->clear_free_func((*p)->data); - OPENSSL_free(*p); - - *p = next; - return; - } - } - } + void *(*dup_func) (void *), + void (*free_func) (void *), + void (*clear_free_func) (void *)) +{ + EC_EXTRA_DATA **p; + + if (ex_data == NULL) + return; + + for (p = ex_data; *p != NULL; p = &((*p)->next)) { + if ((*p)->dup_func == dup_func && (*p)->free_func == free_func + && (*p)->clear_free_func == clear_free_func) { + EC_EXTRA_DATA *next = (*p)->next; + + (*p)->clear_free_func((*p)->data); + OPENSSL_free(*p); + + *p = next; + return; + } + } +} /* this has 'package' visibility */ void EC_EX_DATA_free_all_data(EC_EXTRA_DATA **ex_data) - { - EC_EXTRA_DATA *d; - - if (ex_data == NULL) - return; - - d = *ex_data; - while (d) - { - EC_EXTRA_DATA *next = d->next; - - d->free_func(d->data); - OPENSSL_free(d); - - d = next; - } - *ex_data = NULL; - } +{ + EC_EXTRA_DATA *d; + + if (ex_data == NULL) + return; + + d = *ex_data; + while (d) { + EC_EXTRA_DATA *next = d->next; + + d->free_func(d->data); + OPENSSL_free(d); + + d = next; + } + *ex_data = NULL; +} /* this has 'package' visibility */ void EC_EX_DATA_clear_free_all_data(EC_EXTRA_DATA **ex_data) - { - EC_EXTRA_DATA *d; - - if (ex_data == NULL) - return; - - d = *ex_data; - while (d) - { - EC_EXTRA_DATA *next = d->next; - - d->clear_free_func(d->data); - OPENSSL_free(d); - - d = next; |