-/* crypto/ec/ec_key.c */
/*
* Written by Nils Larsch for the OpenSSL project.
*/
* 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
*/
/* ====================================================================
* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
- * Portions originally developed by SUN MICROSYSTEMS, INC., and
+ * Portions originally developed by SUN MICROSYSTEMS, INC., and
* contributed to the OpenSSL project.
*/
-#define OPENSSL_FIPSAPI
-
+#include <internal/cryptlib.h>
#include <string.h>
#include "ec_lcl.h"
#include <openssl/err.h>
-#include <string.h>
+#ifndef OPENSSL_NO_ENGINE
+# include <openssl/engine.h>
+#endif
EC_KEY *EC_KEY_new(void)
- {
- EC_KEY *ret;
-
- ret=(EC_KEY *)OPENSSL_malloc(sizeof(EC_KEY));
- if (ret == NULL)
- {
- ECerr(EC_F_EC_KEY_NEW, ERR_R_MALLOC_FAILURE);
- return(NULL);
- }
-
- ret->version = 1;
- ret->flags = 0;
- ret->group = NULL;
- ret->pub_key = NULL;
- ret->priv_key= NULL;
- ret->enc_flag= 0;
- ret->conv_form = POINT_CONVERSION_UNCOMPRESSED;
- ret->references= 1;
- ret->method_data = NULL;
- return(ret);
- }
+{
+ return EC_KEY_new_method(NULL);
+}
EC_KEY *EC_KEY_new_by_curve_name(int nid)
- {
- EC_KEY *ret = EC_KEY_new();
- if (ret == NULL)
- return NULL;
- ret->group = EC_GROUP_new_by_curve_name(nid);
- if (ret->group == NULL)
- {
- EC_KEY_free(ret);
- return NULL;
- }
- return ret;
- }
+{
+ EC_KEY *ret = EC_KEY_new();
+ if (ret == NULL)
+ return NULL;
+ ret->group = EC_GROUP_new_by_curve_name(nid);
+ if (ret->group == NULL) {
+ EC_KEY_free(ret);
+ return NULL;
+ }
+ if (ret->meth->set_group != NULL
+ && ret->meth->set_group(ret, ret->group) == 0) {
+ EC_KEY_free(ret);
+ return NULL;
+ }
+ return ret;
+}
void EC_KEY_free(EC_KEY *r)
- {
- int i;
+{
+ int i;
+
+ if (r == NULL)
+ return;
+
+ i = CRYPTO_add(&r->references, -1, CRYPTO_LOCK_EC);
+ REF_PRINT_COUNT("EC_KEY", r);
+ if (i > 0)
+ return;
+ REF_ASSERT_ISNT(i < 0);
- if (r == NULL) return;
+ if (r->meth->finish != NULL)
+ r->meth->finish(r);
- i=CRYPTO_add(&r->references,-1,CRYPTO_LOCK_EC);
-#ifdef REF_PRINT
- REF_PRINT("EC_KEY",r);
+#ifndef OPENSSL_NO_ENGINE
+ ENGINE_finish(r->engine);
#endif
- if (i > 0) return;
-#ifdef REF_CHECK
- if (i < 0)
- {
- fprintf(stderr,"EC_KEY_free, bad reference count\n");
- abort();
- }
+
+ CRYPTO_free_ex_data(CRYPTO_EX_INDEX_EC_KEY, r, &r->ex_data);
+ EC_GROUP_free(r->group);
+ EC_POINT_free(r->pub_key);
+ BN_clear_free(r->priv_key);
+
+ OPENSSL_clear_free((void *)r, sizeof(EC_KEY));
+}
+
+EC_KEY *EC_KEY_copy(EC_KEY *dest, EC_KEY *src)
+{
+ if (dest == NULL || src == NULL) {
+ ECerr(EC_F_EC_KEY_COPY, ERR_R_PASSED_NULL_PARAMETER);
+ return NULL;
+ }
+ if (src->meth != dest->meth) {
+ if (dest->meth->finish != NULL)
+ dest->meth->finish(dest);
+#ifndef OPENSSL_NO_ENGINE
+ if (ENGINE_finish(dest->engine) == 0)
+ return 0;
+ dest->engine = NULL;
+#endif
+ }
+ /* copy the parameters */
+ if (src->group != NULL) {
+ const EC_METHOD *meth = EC_GROUP_method_of(src->group);
+ /* clear the old group */
+ EC_GROUP_free(dest->group);
+ dest->group = EC_GROUP_new(meth);
+ if (dest->group == NULL)
+ return NULL;
+ if (!EC_GROUP_copy(dest->group, src->group))
+ return NULL;
+ }
+ /* copy the public key */
+ if (src->pub_key != NULL && src->group != NULL) {
+ EC_POINT_free(dest->pub_key);
+ dest->pub_key = EC_POINT_new(src->group);
+ if (dest->pub_key == NULL)
+ return NULL;
+ if (!EC_POINT_copy(dest->pub_key, src->pub_key))
+ return NULL;
+ }
+ /* copy the private key */
+ if (src->priv_key != NULL) {
+ if (dest->priv_key == NULL) {
+ dest->priv_key = BN_new();
+ if (dest->priv_key == NULL)
+ return NULL;
+ }
+ if (!BN_copy(dest->priv_key, src->priv_key))
+ return NULL;
+ }
+
+ /* copy the rest */
+ dest->enc_flag = src->enc_flag;
+ dest->conv_form = src->conv_form;
+ dest->version = src->version;
+ dest->flags = src->flags;
+ if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_EC_KEY,
+ &dest->ex_data, &src->ex_data))
+ return NULL;
+
+ if (src->meth != dest->meth) {
+#ifndef OPENSSL_NO_ENGINE
+ if (src->engine != NULL && ENGINE_init(src->engine) == 0)
+ return NULL;
+ dest->engine = src->engine;
#endif
+ dest->meth = src->meth;
+ }
+
+ if (src->meth->copy != NULL && src->meth->copy(dest, src) == 0)
+ return NULL;
+
+ return dest;
+}
+
+EC_KEY *EC_KEY_dup(EC_KEY *ec_key)
+{
+ EC_KEY *ret = EC_KEY_new_method(ec_key->engine);
- if (r->group != NULL)
- EC_GROUP_free(r->group);
- if (r->pub_key != NULL)
- EC_POINT_free(r->pub_key);
- if (r->priv_key != NULL)
- BN_clear_free(r->priv_key);
-
- EC_EX_DATA_free_all_data(&r->method_data);
-
- OPENSSL_cleanse((void *)r, sizeof(EC_KEY));
-
- OPENSSL_free(r);
- }
-
-EC_KEY *EC_KEY_copy(EC_KEY *dest, const EC_KEY *src)
- {
- EC_EXTRA_DATA *d;
-
- if (dest == NULL || src == NULL)
- {
- ECerr(EC_F_EC_KEY_COPY, ERR_R_PASSED_NULL_PARAMETER);
- return NULL;
- }
- /* copy the parameters */
- if (src->group)
- {
- const EC_METHOD *meth = EC_GROUP_method_of(src->group);
- /* clear the old group */
- if (dest->group)
- EC_GROUP_free(dest->group);
- dest->group = EC_GROUP_new(meth);
- if (dest->group == NULL)
- return NULL;
- if (!EC_GROUP_copy(dest->group, src->group))
- return NULL;
- }
- /* copy the public key */
- if (src->pub_key && src->group)
- {
- if (dest->pub_key)
- EC_POINT_free(dest->pub_key);
- dest->pub_key = EC_POINT_new(src->group);
- if (dest->pub_key == NULL)
- return NULL;
- if (!EC_POINT_copy(dest->pub_key, src->pub_key))
- return NULL;
- }
- /* copy the private key */
- if (src->priv_key)
- {
- if (dest->priv_key == NULL)
- {
- dest->priv_key = BN_new();
- if (dest->priv_key == NULL)
- return NULL;
- }
- if (!BN_copy(dest->priv_key, src->priv_key))
- return NULL;
- }
- /* copy method/extra data */
- EC_EX_DATA_free_all_data(&dest->method_data);
-
- for (d = src->method_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->method_data, t, d->dup_func, d->free_func, d->clear_free_func))
- return 0;
- }
-
- /* copy the rest */
- dest->enc_flag = src->enc_flag;
- dest->conv_form = src->conv_form;
- dest->version = src->version;
- dest->flags = src->flags;
-
- return dest;
- }
-
-EC_KEY *EC_KEY_dup(const EC_KEY *ec_key)
- {
- EC_KEY *ret = EC_KEY_new();
- if (ret == NULL)
- return NULL;
- if (EC_KEY_copy(ret, ec_key) == NULL)
- {
- EC_KEY_free(ret);
- return NULL;
- }
- return ret;
- }
+ if (ret == NULL)
+ return NULL;
+ if (EC_KEY_copy(ret, ec_key) == NULL) {
+ EC_KEY_free(ret);
+ return NULL;
+ }
+ return ret;
+}
int EC_KEY_up_ref(EC_KEY *r)
- {
- int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_EC);
-#ifdef REF_PRINT
- REF_PRINT("EC_KEY",r);
-#endif
-#ifdef REF_CHECK
- if (i < 2)
- {
- fprintf(stderr, "EC_KEY_up, bad reference count\n");
- abort();
- }
-#endif
- return ((i > 1) ? 1 : 0);
- }
-
-#ifdef OPENSSL_FIPS
-
-#include <openssl/evp.h>
-#include <openssl/fips.h>
-#include <openssl/fips_rand.h>
-
-static int fips_check_ec(EC_KEY *key)
- {
- EVP_PKEY pk;
- unsigned char tbs[] = "ECDSA Pairwise Check Data";
- pk.type = EVP_PKEY_EC;
- pk.pkey.ec = key;
-
- if (!fips_pkey_signature_test(FIPS_TEST_PAIRWISE,
- &pk, tbs, 0, NULL, 0, NULL, 0, NULL))
- {
- FIPSerr(FIPS_F_FIPS_CHECK_EC,FIPS_R_PAIRWISE_TEST_FAILED);
- fips_set_selftest_fail();
- return 0;
- }
- return 1;
- }
-
-int fips_check_ec_prng(EC_KEY *ec)
- {
- int bits, strength;
- if (!FIPS_module_mode())
- return 1;
-
- if (ec->flags & (EC_FLAG_NON_FIPS_ALLOW|EC_FLAG_FIPS_CHECKED))
- return 1;
-
- if (!ec->group)
- return 1;
-
- bits = BN_num_bits(&ec->group->order);
-
- if (bits < 160)
- {
- FIPSerr(FIPS_F_FIPS_CHECK_EC_PRNG,FIPS_R_KEY_TOO_SHORT);
- return 0;
- }
- /* Comparable algorithm strengths: from SP800-57 table 2 */
- if (bits >= 512)
- strength = 256;
- else if (bits >= 384)
- strength = 192;
- else if (bits >= 256)
- strength = 128;
- else if (bits >= 224)
- strength = 112;
- else
- strength = 80;
-
-
- if (FIPS_rand_strength() >= strength)
- return 1;
-
- FIPSerr(FIPS_F_FIPS_CHECK_EC_PRNG,FIPS_R_PRNG_STRENGTH_TOO_LOW);
- return 0;
-
- }
+{
+ int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_EC);
-#endif
+ REF_PRINT_COUNT("EC_KEY", r);
+ REF_ASSERT_ISNT(i < 2);
+ return ((i > 1) ? 1 : 0);
+}
int EC_KEY_generate_key(EC_KEY *eckey)
- {
- int ok = 0;
- BN_CTX *ctx = NULL;
- BIGNUM *priv_key = NULL, *order = NULL;
- EC_POINT *pub_key = NULL;
-
- if (!eckey || !eckey->group)
- {
- ECerr(EC_F_EC_KEY_GENERATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
- return 0;
- }
-
- if ((order = BN_new()) == NULL) goto err;
- if ((ctx = BN_CTX_new()) == NULL) goto err;
-
- if (eckey->priv_key == NULL)
- {
- priv_key = BN_new();
- if (priv_key == NULL)
- goto err;
- }
- else
- priv_key = eckey->priv_key;
-
- if (!EC_GROUP_get_order(eckey->group, order, ctx))
- goto err;
-
-#ifdef OPENSSL_FIPS
- if (!fips_check_ec_prng(eckey))
- goto err;
-#endif
+{
+ if (eckey == NULL || eckey->group == NULL) {
+ ECerr(EC_F_EC_KEY_GENERATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+ if (eckey->meth->keygen != NULL)
+ return eckey->meth->keygen(eckey);
+ ECerr(EC_F_EC_KEY_GENERATE_KEY, EC_R_OPERATION_NOT_SUPPORTED);
+ return 0;
+}
+
+int ossl_ec_key_gen(EC_KEY *eckey)
+{
+ int ok = 0;
+ BN_CTX *ctx = NULL;
+ BIGNUM *priv_key = NULL;
+ const BIGNUM *order = NULL;
+ EC_POINT *pub_key = NULL;
+
+ if ((ctx = BN_CTX_new()) == NULL)
+ goto err;
+
+ if (eckey->priv_key == NULL) {
+ priv_key = BN_new();
+ if (priv_key == NULL)
+ goto err;
+ } else
+ priv_key = eckey->priv_key;
+
+ order = EC_GROUP_get0_order(eckey->group);
+ if (order == NULL)
+ goto err;
+
+ do
+ if (!BN_rand_range(priv_key, order))
+ goto err;
+ while (BN_is_zero(priv_key)) ;
+
+ if (eckey->pub_key == NULL) {
+ pub_key = EC_POINT_new(eckey->group);
+ if (pub_key == NULL)
+ goto err;
+ } else
+ pub_key = eckey->pub_key;
+
+ if (!EC_POINT_mul(eckey->group, pub_key, priv_key, NULL, NULL, ctx))
+ goto err;
+
+ eckey->priv_key = priv_key;
+ eckey->pub_key = pub_key;
+
+ ok = 1;
+
+ err:
+ if (eckey->pub_key == NULL)
+ EC_POINT_free(pub_key);
+ if (eckey->priv_key != priv_key)
+ BN_free(priv_key);
+ BN_CTX_free(ctx);
+ return (ok);
+}
- do
- if (!BN_rand_range(priv_key, order))
- goto err;
- while (BN_is_zero(priv_key));
-
- if (eckey->pub_key == NULL)
- {
- pub_key = EC_POINT_new(eckey->group);
- if (pub_key == NULL)
- goto err;
- }
- else
- pub_key = eckey->pub_key;
-
- if (!EC_POINT_mul(eckey->group, pub_key, priv_key, NULL, NULL, ctx))
- goto err;
-
- eckey->priv_key = priv_key;
- eckey->pub_key = pub_key;
-
-#ifdef OPENSSL_FIPS
- if(!fips_check_ec(eckey))
- {
- eckey->priv_key = NULL;
- eckey->pub_key = NULL;
- goto err;
- }
+int EC_KEY_check_key(const EC_KEY *eckey)
+{
+ int ok = 0;
+ BN_CTX *ctx = NULL;
+ const BIGNUM *order = NULL;
+ EC_POINT *point = NULL;
+
+ if (eckey == NULL || eckey->group == NULL || eckey->pub_key == NULL) {
+ ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+
+ if (EC_POINT_is_at_infinity(eckey->group, eckey->pub_key)) {
+ ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_POINT_AT_INFINITY);
+ goto err;
+ }
+
+ if ((ctx = BN_CTX_new()) == NULL)
+ goto err;
+ if ((point = EC_POINT_new(eckey->group)) == NULL)
+ goto err;
+
+ /* testing whether the pub_key is on the elliptic curve */
+ if (EC_POINT_is_on_curve(eckey->group, eckey->pub_key, ctx) <= 0) {
+ ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_POINT_IS_NOT_ON_CURVE);
+ goto err;
+ }
+ /* testing whether pub_key * order is the point at infinity */
+ order = eckey->group->order;
+ if (BN_is_zero(order)) {
+ ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_INVALID_GROUP_ORDER);
+ goto err;
+ }
+ if (!EC_POINT_mul(eckey->group, point, NULL, eckey->pub_key, order, ctx)) {
+ ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_EC_LIB);
+ goto err;
+ }
+ if (!EC_POINT_is_at_infinity(eckey->group, point)) {
+ ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_WRONG_ORDER);
+ goto err;
+ }
+ /*
+ * in case the priv_key is present : check if generator * priv_key ==
+ * pub_key
+ */
+ if (eckey->priv_key != NULL) {
+ if (BN_cmp(eckey->priv_key, order) >= 0) {
+ ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_WRONG_ORDER);
+ goto err;
+ }
+ if (!EC_POINT_mul(eckey->group, point, eckey->priv_key,
+ NULL, NULL, ctx)) {
+ ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_EC_LIB);
+ goto err;
+ }
+ if (EC_POINT_cmp(eckey->group, point, eckey->pub_key, ctx) != 0) {
+ ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_INVALID_PRIVATE_KEY);
+ goto err;
+ }
+ }
+ ok = 1;
+ err:
+ BN_CTX_free(ctx);
+ EC_POINT_free(point);
+ return (ok);
+}
+
+int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, BIGNUM *x,
+ BIGNUM *y)
+{
+ BN_CTX *ctx = NULL;
+ BIGNUM *tx, *ty;
+ EC_POINT *point = NULL;
+ int ok = 0;
+#ifndef OPENSSL_NO_EC2M
+ int tmp_nid, is_char_two = 0;
#endif
- ok=1;
+ if (key == NULL || key->group == NULL || x == NULL || y == NULL) {
+ ECerr(EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES,
+ ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+ ctx = BN_CTX_new();
+ if (ctx == NULL)
+ goto err;
-err:
- if (order)
- BN_free(order);
- if (pub_key != NULL && eckey->pub_key == NULL)
- EC_POINT_free(pub_key);
- if (priv_key != NULL && eckey->priv_key == NULL)
- BN_free(priv_key);
- if (ctx != NULL)
- BN_CTX_free(ctx);
- return(ok);
- }
+ point = EC_POINT_new(key->group);
+
+ if (point == NULL)
+ goto err;
+
+ tx = BN_CTX_get(ctx);
+ ty = BN_CTX_get(ctx);
+ if (ty == NULL)
+ goto err;
-int EC_KEY_check_key(const EC_KEY *eckey)
- {
- int ok = 0;
- BN_CTX *ctx = NULL;
- const BIGNUM *order = NULL;
- EC_POINT *point = NULL;
-
- if (!eckey || !eckey->group || !eckey->pub_key)
- {
- ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_PASSED_NULL_PARAMETER);
- return 0;
- }
-
- if (EC_POINT_is_at_infinity(eckey->group, eckey->pub_key))
- {
- ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_POINT_AT_INFINITY);
- goto err;
- }
-
- if ((ctx = BN_CTX_new()) == NULL)
- goto err;
- if ((point = EC_POINT_new(eckey->group)) == NULL)
- goto err;
-
- /* testing whether the pub_key is on the elliptic curve */
- if (!EC_POINT_is_on_curve(eckey->group, eckey->pub_key, ctx))
- {
- ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_POINT_IS_NOT_ON_CURVE);
- goto err;
- }
- /* testing whether pub_key * order is the point at infinity */
- order = &eckey->group->order;
- if (BN_is_zero(order))
- {
- ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_INVALID_GROUP_ORDER);
- goto err;
- }
- if (!EC_POINT_mul(eckey->group, point, NULL, eckey->pub_key, order, ctx))
- {
- ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_EC_LIB);
- goto err;
- }
- if (!EC_POINT_is_at_infinity(eckey->group, point))
- {
- ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_WRONG_ORDER);
- goto err;
- }
- /* in case the priv_key is present :
- * check if generator * priv_key == pub_key
- */
- if (eckey->priv_key)
- {
- if (BN_cmp(eckey->priv_key, order) >= 0)
- {
- ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_WRONG_ORDER);
- goto err;
- }
- if (!EC_POINT_mul(eckey->group, point, eckey->priv_key,
- NULL, NULL, ctx))
- {
- ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_EC_LIB);
- goto err;
- }
- if (EC_POINT_cmp(eckey->group, point, eckey->pub_key,
- ctx) != 0)
- {
- ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_INVALID_PRIVATE_KEY);
- goto err;
- }
- }
- ok = 1;
-err:
- if (ctx != NULL)
- BN_CTX_free(ctx);
- if (point != NULL)
- EC_POINT_free(point);
- return(ok);
- }
-
-int EC_KEY_set_public_key_affine_coordinates(EC_KEY *key, BIGNUM *x, BIGNUM *y)
- {
- BN_CTX *ctx = NULL;
- BIGNUM *tx, *ty;
- EC_POINT *point = NULL;
- int ok = 0, tmp_nid, is_char_two = 0;
-
- if (!key || !key->group || !x || !y)
- {
- ECerr(EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES,
- ERR_R_PASSED_NULL_PARAMETER);
- return 0;
- }
- ctx = BN_CTX_new();
- if (!ctx)
- goto err;
-
- point = EC_POINT_new(key->group);
-
- if (!point)
- goto err;
-
- tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(key->group));
-
- if (tmp_nid == NID_X9_62_characteristic_two_field)
- is_char_two = 1;
-
- tx = BN_CTX_get(ctx);
- ty = BN_CTX_get(ctx);
#ifndef OPENSSL_NO_EC2M
- if (is_char_two)
- {
- if (!EC_POINT_set_affine_coordinates_GF2m(key->group, point,
- x, y, ctx))
- goto err;
- if (!EC_POINT_get_affine_coordinates_GF2m(key->group, point,
- tx, ty, ctx))
- goto err;
- }
- else
+ tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(key->group));
+
+ if (tmp_nid == NID_X9_62_characteristic_two_field)
+ is_char_two = 1;
+
+ if (is_char_two) {
+ if (!EC_POINT_set_affine_coordinates_GF2m(key->group, point,
+ x, y, ctx))
+ goto err;
+ if (!EC_POINT_get_affine_coordinates_GF2m(key->group, point,
+ tx, ty, ctx))
+ goto err;
+ } else
#endif
- {
- if (!EC_POINT_set_affine_coordinates_GFp(key->group, point,
- x, y, ctx))
- goto err;
- if (!EC_POINT_get_affine_coordinates_GFp(key->group, point,
- tx, ty, ctx))
- goto err;
- }
- /* Check if retrieved coordinates match originals: if not values
- * are out of range.
- */
- if (BN_cmp(x, tx) || BN_cmp(y, ty))
- {
- ECerr(EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES,
- EC_R_COORDINATES_OUT_OF_RANGE);
- goto err;
- }
-
- if (!EC_KEY_set_public_key(key, point))
- goto err;
-
- if (EC_KEY_check_key(key) == 0)
- goto err;
-
- ok = 1;
-
- err:
- if (ctx)
- BN_CTX_free(ctx);
- if (point)
- EC_POINT_free(point);
- return ok;
-
- }
+ {
+ if (!EC_POINT_set_affine_coordinates_GFp(key->group, point,
+ x, y, ctx))
+ goto err;
+ if (!EC_POINT_get_affine_coordinates_GFp(key->group, point,
+ tx, ty, ctx))
+ goto err;
+ }
+ /*
+ * Check if retrieved coordinates match originals and are less than field
+ * order: if not values are out of range.
+ */
+ if (BN_cmp(x, tx) || BN_cmp(y, ty)
+ || (BN_cmp(x, key->group->field) >= 0)
+ || (BN_cmp(y, key->group->field) >= 0)) {
+ ECerr(EC_F_EC_KEY_SET_PUBLIC_KEY_AFFINE_COORDINATES,
+ EC_R_COORDINATES_OUT_OF_RANGE);
+ goto err;
+ }
+
+ if (!EC_KEY_set_public_key(key, point))
+ goto err;
+
+ if (EC_KEY_check_key(key) == 0)
+ goto err;
+
+ ok = 1;
+
+ err:
+ BN_CTX_free(ctx);
+ EC_POINT_free(point);
+ return ok;
+
+}
const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key)
- {
- return key->group;
- }
+{
+ return key->group;
+}
int EC_KEY_set_group(EC_KEY *key, const EC_GROUP *group)
- {
- if (key->group != NULL)
- EC_GROUP_free(key->group);
- key->group = EC_GROUP_dup(group);
- return (key->group == NULL) ? 0 : 1;
- }
+{
+ if (key->meth->set_group != NULL && key->meth->set_group(key, group) == 0)
+ return 0;
+ EC_GROUP_free(key->group);
+ key->group = EC_GROUP_dup(group);
+ return (key->group == NULL) ? 0 : 1;
+}
const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *key)
- {
- return key->priv_key;
- }
+{
+ return key->priv_key;
+}
int EC_KEY_set_private_key(EC_KEY *key, const BIGNUM *priv_key)
- {
- if (key->priv_key)
- BN_clear_free(key->priv_key);
- key->priv_key = BN_dup(priv_key);
- return (key->priv_key == NULL) ? 0 : 1;
- }
+{
+ if (key->meth->set_private != NULL
+ && key->meth->set_private(key, priv_key) == 0)
+ return 0;
+ BN_clear_free(key->priv_key);
+ key->priv_key = BN_dup(priv_key);
+ return (key->priv_key == NULL) ? 0 : 1;
+}
const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *key)
- {
- return key->pub_key;
- }
+{
+ return key->pub_key;
+}
int EC_KEY_set_public_key(EC_KEY *key, const EC_POINT *pub_key)
- {
- if (key->pub_key != NULL)
- EC_POINT_free(key->pub_key);
- key->pub_key = EC_POINT_dup(pub_key, key->group);
- return (key->pub_key == NULL) ? 0 : 1;
- }
+{
+ if (key->meth->set_public != NULL
+ && key->meth->set_public(key, pub_key) == 0)
+ return 0;
+ EC_POINT_free(key->pub_key);
+ key->pub_key = EC_POINT_dup(pub_key, key->group);
+ return (key->pub_key == NULL) ? 0 : 1;
+}
unsigned int EC_KEY_get_enc_flags(const EC_KEY *key)
- {
- return key->enc_flag;
- }
+{
+ return key->enc_flag;
+}
void EC_KEY_set_enc_flags(EC_KEY *key, unsigned int flags)
- {
- key->enc_flag = flags;
- }
+{
+ key->enc_flag = flags;
+}
point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key)
- {
- return key->conv_form;
- }
+{
+ return key->conv_form;
+}
void EC_KEY_set_conv_form(EC_KEY *key, point_conversion_form_t cform)
- {
- key->conv_form = cform;
- if (key->group != NULL)
- EC_GROUP_set_point_conversion_form(key->group, cform);
- }
-
-void *EC_KEY_get_key_method_data(EC_KEY *key,
- void *(*dup_func)(void *), void (*free_func)(void *), void (*clear_free_func)(void *))
- {
- return EC_EX_DATA_get_data(key->method_data, dup_func, free_func, clear_free_func);
- }
-
-void EC_KEY_insert_key_method_data(EC_KEY *key, void *data,
- void *(*dup_func)(void *), void (*free_func)(void *), void (*clear_free_func)(void *))
- {
- EC_EXTRA_DATA *ex_data;
- CRYPTO_w_lock(CRYPTO_LOCK_EC);
- ex_data = EC_EX_DATA_get_data(key->method_data, dup_func, free_func, clear_free_func);
- if (ex_data == NULL)
- EC_EX_DATA_set_data(&key->method_data, data, dup_func, free_func, clear_free_func);
- CRYPTO_w_unlock(CRYPTO_LOCK_EC);
- }
+{
+ key->conv_form = cform;
+ if (key->group != NULL)
+ EC_GROUP_set_point_conversion_form(key->group, cform);
+}
void EC_KEY_set_asn1_flag(EC_KEY *key, int flag)
- {
- if (key->group != NULL)
- EC_GROUP_set_asn1_flag(key->group, flag);
- }
+{
+ if (key->group != NULL)
+ EC_GROUP_set_asn1_flag(key->group, flag);
+}
int EC_KEY_precompute_mult(EC_KEY *key, BN_CTX *ctx)
- {
- if (key->group == NULL)
- return 0;
- return EC_GROUP_precompute_mult(key->group, ctx);
- }
+{
+ if (key->group == NULL)
+ return 0;
+ return EC_GROUP_precompute_mult(key->group, ctx);
+}
int EC_KEY_get_flags(const EC_KEY *key)
- {
- return key->flags;
- }
+{
+ return key->flags;
+}
void EC_KEY_set_flags(EC_KEY *key, int flags)
- {
- key->flags |= flags;
- }
+{
+ key->flags |= flags;
+}
void EC_KEY_clear_flags(EC_KEY *key, int flags)
- {
- key->flags &= ~flags;
- }
+{
+ key->flags &= ~flags;
+}
+
+size_t EC_KEY_key2buf(const EC_KEY *key, point_conversion_form_t form,
+ unsigned char **pbuf, BN_CTX *ctx)
+{
+ if (key == NULL || key->pub_key == NULL || key->group == NULL)
+ return 0;
+ return EC_POINT_point2buf(key->group, key->pub_key, form, pbuf, ctx);
+}
+
+int EC_KEY_oct2key(EC_KEY *key, const unsigned char *buf, size_t len,
+ BN_CTX *ctx)
+{
+ if (key == NULL || key->group == NULL)
+ return 0;
+ if (key->pub_key == NULL)
+ key->pub_key = EC_POINT_new(key->group);
+ if (key->pub_key == NULL)
+ return 0;
+ return EC_POINT_oct2point(key->group, key->pub_key, buf, len, ctx);
+}
+
+size_t EC_KEY_priv2oct(const EC_KEY *eckey, unsigned char *buf, size_t len)
+{
+ size_t buf_len;
+ if (eckey->group == NULL || eckey->group->meth == NULL)
+ return 0;
+
+ buf_len = (EC_GROUP_get_degree(eckey->group) + 7) / 8;
+ if (eckey->priv_key == NULL)
+ return 0;
+ if (buf == NULL)
+ return buf_len;
+ else if (len < buf_len)
+ return 0;
+
+ /* Octetstring may need leading zeros if BN is to short */
+
+ if (BN_bn2binpad(eckey->priv_key, buf, buf_len) == -1) {
+ ECerr(EC_F_EC_KEY_PRIV2OCT, EC_R_BUFFER_TOO_SMALL);
+ return 0;
+ }
+
+ return buf_len;
+}
+
+int EC_KEY_oct2priv(EC_KEY *eckey, unsigned char *buf, size_t len)
+{
+ if (eckey->group == NULL || eckey->group->meth == NULL)
+ return 0;
+
+ if (eckey->priv_key == NULL)
+ eckey->priv_key = BN_secure_new();
+ if (eckey->priv_key == NULL) {
+ ECerr(EC_F_EC_KEY_OCT2PRIV, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ eckey->priv_key = BN_bin2bn(buf, len, eckey->priv_key);
+ if (eckey->priv_key == NULL) {
+ ECerr(EC_F_EC_KEY_OCT2PRIV, ERR_R_BN_LIB);
+ return 0;
+ }
+ return 1;
+}
+
+size_t EC_KEY_priv2buf(const EC_KEY *eckey, unsigned char **pbuf)
+{
+ size_t len;
+ unsigned char *buf;
+ len = EC_KEY_priv2oct(eckey, NULL, 0);
+ if (len == 0 || pbuf == NULL)
+ return len;
+ buf = OPENSSL_malloc(len);
+ if (buf == NULL)
+ return 0;
+ len = EC_KEY_priv2oct(eckey, buf, len);
+ if (len == 0) {
+ OPENSSL_free(buf);
+ return 0;
+ }
+ *pbuf = buf;
+ return len;
+}
projects / openssl.git / blobdiff