* Written by Nils Larsch for the OpenSSL project.
*/
/* ====================================================================
- * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
+ * Copyright (c) 1998-2005 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
* contributed to the OpenSSL project.
*/
+#define OPENSSL_FIPSAPI
+
#include <string.h>
#include "ec_lcl.h"
#include <openssl/err.h>
ret=(EC_KEY *)OPENSSL_malloc(sizeof(EC_KEY));
if (ret == NULL)
{
- ECerr(EC_F_EC_NEW, ERR_R_MALLOC_FAILURE);
+ 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->meth_data = NULL;
+ ret->method_data = NULL;
return(ret);
}
+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;
+ }
void EC_KEY_free(EC_KEY *r)
{
if (r->priv_key != NULL)
BN_clear_free(r->priv_key);
- if (r->meth_data && r->meth_data->finish)
- r->meth_data->finish(r);
+ EC_EX_DATA_free_all_data(&r->method_data);
OPENSSL_cleanse((void *)r, sizeof(EC_KEY));
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);
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 *eckey)
+EC_KEY *EC_KEY_dup(const EC_KEY *ec_key)
{
- EC_KEY *ret = NULL;
- int ok = 1;
-
- ret = EC_KEY_new();
+ EC_KEY *ret = EC_KEY_new();
if (ret == NULL)
return NULL;
- /* copy the parameters */
- if (eckey->group)
- {
- ret->group = EC_GROUP_dup(eckey->group);
- if (ret->group == NULL)
- ok = 0;
- }
- /* copy the public key */
- if (eckey->pub_key && eckey->group)
- {
- ret->pub_key = EC_POINT_dup(eckey->pub_key, eckey->group);
- if (ret->pub_key == NULL)
- ok = 0;
- }
- /* copy the private key */
- if (eckey->priv_key)
- {
- ret->priv_key = BN_dup(eckey->priv_key);
- if (ret->priv_key == NULL)
- ok = 0;
- }
- /* copy the rest */
- ret->enc_flag = eckey->enc_flag;
- ret->conv_form = eckey->conv_form;
- ret->version = eckey->version;
-
- if (!ok)
+ if (EC_KEY_copy(ret, ec_key) == NULL)
{
EC_KEY_free(ret);
- ret = NULL;
+ return NULL;
}
-
return ret;
}
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;
+
+ }
+
+#endif
+
int EC_KEY_generate_key(EC_KEY *eckey)
{
int ok = 0;
BIGNUM *priv_key = NULL, *order = NULL;
EC_POINT *pub_key = NULL;
+#ifdef OPENSSL_FIPS
+ if(FIPS_selftest_failed())
+ {
+ FIPSerr(FIPS_F_EC_KEY_GENERATE_KEY,FIPS_R_FIPS_SELFTEST_FAILED);
+ return 0;
+ }
+#endif
+
if (!eckey || !eckey->group)
{
ECerr(EC_F_EC_KEY_GENERATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
if (!EC_GROUP_get_order(eckey->group, order, ctx))
goto err;
+#ifdef OPENSSL_FIPS
+ if (!fips_check_ec_prng(eckey))
+ goto err;
+#endif
+
do
if (!BN_rand_range(priv_key, order))
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;
+ }
+#endif
+
ok=1;
err:
{
int ok = 0;
BN_CTX *ctx = NULL;
- BIGNUM *order = 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 ((ctx = BN_CTX_new()) == NULL)
+
+ 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 ((order = BN_new()) == NULL)
+ }
+
+ if ((ctx = BN_CTX_new()) == NULL)
goto err;
if ((point = EC_POINT_new(eckey->group)) == NULL)
goto err;
goto err;
}
/* testing whether pub_key * order is the point at infinity */
- if (!EC_GROUP_get_order(eckey->group, order, ctx))
+ 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_copy(point, eckey->pub_key))
- {
- ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_EC_LIB);
- goto err;
- }
- if (!EC_POINT_mul(eckey->group, point, order, NULL, NULL, ctx))
+ 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;
err:
if (ctx != NULL)
BN_CTX_free(ctx);
- if (order != NULL)
- BN_free(order);
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
+#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 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:
+ if (ctx)
+ BN_CTX_free(ctx);
+ if (point)
+ EC_POINT_free(point);
+ return ok;
+
+ }
+
+const EC_GROUP *EC_KEY_get0_group(const EC_KEY *key)
+ {
+ 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;
+ }
+
+const BIGNUM *EC_KEY_get0_private_key(const EC_KEY *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;
+ }
+
+const EC_POINT *EC_KEY_get0_public_key(const EC_KEY *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;
+ }
+
+unsigned int EC_KEY_get_enc_flags(const EC_KEY *key)
+ {
+ return key->enc_flag;
+ }
+
+void EC_KEY_set_enc_flags(EC_KEY *key, unsigned int flags)
+ {
+ key->enc_flag = flags;
+ }
+
+point_conversion_form_t EC_KEY_get_conv_form(const EC_KEY *key)
+ {
+ 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 *))
+ {
+ void *ret;
+
+ CRYPTO_r_lock(CRYPTO_LOCK_EC);
+ ret = EC_EX_DATA_get_data(key->method_data, dup_func, free_func, clear_free_func);
+ CRYPTO_r_unlock(CRYPTO_LOCK_EC);
+
+ return ret;
+ }
+
+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);
+
+ return ex_data;
+ }
+
+void EC_KEY_set_asn1_flag(EC_KEY *key, int 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);
+ }
+
+int EC_KEY_get_flags(const EC_KEY *key)
+ {
+ return key->flags;
+ }
+
+void EC_KEY_set_flags(EC_KEY *key, int flags)
+ {
+ key->flags |= flags;
+ }
+
+void EC_KEY_clear_flags(EC_KEY *key, int flags)
+ {
+ key->flags &= ~flags;
+ }
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