--- /dev/null
+/* crypto/ecdsa/ecs_lib.c */
+/* ====================================================================
+ * 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).
+ *
+ */
+
+#include <string.h>
+#include "ecs_locl.h"
+#ifndef OPENSSL_NO_ENGINE
+#include <openssl/engine.h>
+#endif
+#include <openssl/err.h>
+#include <openssl/bn.h>
+#ifdef OPENSSL_FIPS
+#include <openssl/fips.h>
+#endif
+
+const char ECDSA_version[]="ECDSA" OPENSSL_VERSION_PTEXT;
+
+static const ECDSA_METHOD *default_ECDSA_method = NULL;
+
+static void *ecdsa_data_new(void);
+static void *ecdsa_data_dup(void *);
+static void ecdsa_data_free(void *);
+
+void ECDSA_set_default_method(const ECDSA_METHOD *meth)
+{
+ default_ECDSA_method = meth;
+}
+
+const ECDSA_METHOD *ECDSA_get_default_method(void)
+{
+ if(!default_ECDSA_method)
+ {
+#ifdef OPENSSL_FIPS
+ if (FIPS_mode())
+ return FIPS_ecdsa_openssl();
+ else
+ return ECDSA_OpenSSL();
+#else
+ default_ECDSA_method = ECDSA_OpenSSL();
+#endif
+ }
+ return default_ECDSA_method;
+}
+
+int ECDSA_set_method(EC_KEY *eckey, const ECDSA_METHOD *meth)
+{
+ ECDSA_DATA *ecdsa;
+
+ ecdsa = ecdsa_check(eckey);
+
+ if (ecdsa == NULL)
+ return 0;
+
+#ifndef OPENSSL_NO_ENGINE
+ if (ecdsa->engine)
+ {
+ ENGINE_finish(ecdsa->engine);
+ ecdsa->engine = NULL;
+ }
+#endif
+ ecdsa->meth = meth;
+
+ return 1;
+}
+
+static ECDSA_DATA *ECDSA_DATA_new_method(ENGINE *engine)
+{
+ ECDSA_DATA *ret;
+
+ ret=(ECDSA_DATA *)OPENSSL_malloc(sizeof(ECDSA_DATA));
+ if (ret == NULL)
+ {
+ ECDSAerr(ECDSA_F_ECDSA_DATA_NEW_METHOD, ERR_R_MALLOC_FAILURE);
+ return(NULL);
+ }
+
+ ret->init = NULL;
+
+ ret->meth = ECDSA_get_default_method();
+ ret->engine = engine;
+#ifndef OPENSSL_NO_ENGINE
+ if (!ret->engine)
+ ret->engine = ENGINE_get_default_ECDSA();
+ if (ret->engine)
+ {
+ ret->meth = ENGINE_get_ECDSA(ret->engine);
+ if (!ret->meth)
+ {
+ ECDSAerr(ECDSA_F_ECDSA_DATA_NEW_METHOD, ERR_R_ENGINE_LIB);
+ ENGINE_finish(ret->engine);
+ OPENSSL_free(ret);
+ return NULL;
+ }
+ }
+#endif
+
+ ret->flags = ret->meth->flags;
+ CRYPTO_new_ex_data(CRYPTO_EX_INDEX_ECDSA, ret, &ret->ex_data);
+#if 0
+ if ((ret->meth->init != NULL) && !ret->meth->init(ret))
+ {
+ CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ECDSA, ret, &ret->ex_data);
+ OPENSSL_free(ret);
+ ret=NULL;
+ }
+#endif
+ return(ret);
+}
+
+static void *ecdsa_data_new(void)
+{
+ return (void *)ECDSA_DATA_new_method(NULL);
+}
+
+static void *ecdsa_data_dup(void *data)
+{
+ ECDSA_DATA *r = (ECDSA_DATA *)data;
+
+ /* XXX: dummy operation */
+ if (r == NULL)
+ return NULL;
+
+ return ecdsa_data_new();
+}
+
+static void ecdsa_data_free(void *data)
+{
+ ECDSA_DATA *r = (ECDSA_DATA *)data;
+
+#ifndef OPENSSL_NO_ENGINE
+ if (r->engine)
+ ENGINE_finish(r->engine);
+#endif
+ CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ECDSA, r, &r->ex_data);
+
+ OPENSSL_cleanse((void *)r, sizeof(ECDSA_DATA));
+
+ OPENSSL_free(r);
+}
+
+ECDSA_DATA *ecdsa_check(EC_KEY *key)
+{
+ ECDSA_DATA *ecdsa_data;
+
+ void *data = EC_KEY_get_key_method_data(key, ecdsa_data_dup,
+ ecdsa_data_free, ecdsa_data_free);
+ if (data == NULL)
+ {
+ ecdsa_data = (ECDSA_DATA *)ecdsa_data_new();
+ if (ecdsa_data == NULL)
+ return NULL;
+ data = EC_KEY_insert_key_method_data(key, (void *)ecdsa_data,
+ ecdsa_data_dup, ecdsa_data_free, ecdsa_data_free);
+ if (data != NULL)
+ {
+ /* Another thread raced us to install the key_method
+ * data and won. */
+ ecdsa_data_free(ecdsa_data);
+ ecdsa_data = (ECDSA_DATA *)data;
+ }
+ }
+ else
+ ecdsa_data = (ECDSA_DATA *)data;
+#ifdef OPENSSL_FIPS
+ if (FIPS_mode() && !(ecdsa_data->flags & ECDSA_FLAG_FIPS_METHOD)
+ && !(EC_KEY_get_flags(key) & EC_FLAG_NON_FIPS_ALLOW))
+ {
+ ECDSAerr(ECDSA_F_ECDSA_CHECK, ECDSA_R_NON_FIPS_METHOD);
+ return NULL;
+ }
+#endif
+
+ return ecdsa_data;
+}
+
+int ECDSA_size(const EC_KEY *r)
+{
+ int ret,i;
+ ASN1_INTEGER bs;
+ BIGNUM *order=NULL;
+ unsigned char buf[4];
+ const EC_GROUP *group;
+
+ if (r == NULL)
+ return 0;
+ group = EC_KEY_get0_group(r);
+ if (group == NULL)
+ return 0;
+
+ if ((order = BN_new()) == NULL) return 0;
+ if (!EC_GROUP_get_order(group,order,NULL))
+ {
+ BN_clear_free(order);
+ return 0;
+ }
+ i=BN_num_bits(order);
+ bs.length=(i+7)/8;
+ bs.data=buf;
+ bs.type=V_ASN1_INTEGER;
+ /* If the top bit is set the asn1 encoding is 1 larger. */
+ buf[0]=0xff;
+
+ i=i2d_ASN1_INTEGER(&bs,NULL);
+ i+=i; /* r and s */
+ ret=ASN1_object_size(1,i,V_ASN1_SEQUENCE);
+ BN_clear_free(order);
+ return(ret);
+}
+
+
+int ECDSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
+ CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
+{
+ return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_ECDSA, argl, argp,
+ new_func, dup_func, free_func);
+}
+
+int ECDSA_set_ex_data(EC_KEY *d, int idx, void *arg)
+{
+ ECDSA_DATA *ecdsa;
+ ecdsa = ecdsa_check(d);
+ if (ecdsa == NULL)
+ return 0;
+ return(CRYPTO_set_ex_data(&ecdsa->ex_data,idx,arg));
+}
+
+void *ECDSA_get_ex_data(EC_KEY *d, int idx)
+{
+ ECDSA_DATA *ecdsa;
+ ecdsa = ecdsa_check(d);
+ if (ecdsa == NULL)
+ return NULL;
+ return(CRYPTO_get_ex_data(&ecdsa->ex_data,idx));
+}
projects / cassiopeia.git / blobdiff