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-rw-r--r--openssl/crypto/ec/ec_key.c920
1 files changed, 463 insertions, 457 deletions
diff --git a/openssl/crypto/ec/ec_key.c b/openssl/crypto/ec/ec_key.c
index 12fb0e6d6..0458d340b 100644
--- a/openssl/crypto/ec/ec_key.c
+++ b/openssl/crypto/ec/ec_key.c
@@ -1,457 +1,463 @@
-/* crypto/ec/ec_key.c */
-/*
- * Written by Nils Larsch for the OpenSSL project.
- */
-/* ====================================================================
- * 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
- * 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
- * openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
-/* ====================================================================
- * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
- * Portions originally developed by SUN MICROSYSTEMS, INC., and
- * contributed to the OpenSSL project.
- */
-
-#include <string.h>
-#include "ec_lcl.h"
-#include <openssl/err.h>
-#include <string.h>
-
-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->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);
- }
-
-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)
- {
- int i;
-
- if (r == NULL) return;
-
- i=CRYPTO_add(&r->references,-1,CRYPTO_LOCK_EC);
-#ifdef REF_PRINT
- REF_PRINT("EC_KEY",r);
-#endif
- if (i > 0) return;
-#ifdef REF_CHECK
- if (i < 0)
- {
- fprintf(stderr,"EC_KEY_free, bad reference count\n");
- abort();
- }
-#endif
-
- 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;
-
- 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;
- }
-
-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);
- }
-
-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;
-
- 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 (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);
- }
-
-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 ((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);
- }
-
-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 *))
- {
- 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);
- }
-
-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);
- }
+/* crypto/ec/ec_key.c */
+/*
+ * Written by Nils Larsch for the OpenSSL project.
+ */
+/* ====================================================================
+ * 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
+ * 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
+ * openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ * nor may "OpenSSL" appear in their names without prior written
+ * permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com). This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+/* ====================================================================
+ * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
+ * Portions originally developed by SUN MICROSYSTEMS, INC., and
+ * contributed to the OpenSSL project.
+ */
+
+#include <string.h>
+#include "ec_lcl.h"
+#include <openssl/err.h>
+#include <string.h>
+
+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->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);
+ }
+
+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)
+ {
+ int i;
+
+ if (r == NULL) return;
+
+ i=CRYPTO_add(&r->references,-1,CRYPTO_LOCK_EC);
+#ifdef REF_PRINT
+ REF_PRINT("EC_KEY",r);
+#endif
+ if (i > 0) return;
+#ifdef REF_CHECK
+ if (i < 0)
+ {
+ fprintf(stderr,"EC_KEY_free, bad reference count\n");
+ abort();
+ }
+#endif
+
+ 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;
+
+ 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;
+ }
+
+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);
+ }
+
+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;
+
+ 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 (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);
+ }
+
+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);
+ }
+
+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 *))
+ {
+ 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);
+ }
+
+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);
+ }
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 12:23:24 +0000