--- /dev/null
+/*
+ * Copyright (c) 2000-2001,2011,2014 Apple Inc. All Rights Reserved.
+ *
+ * The contents of this file constitute Original Code as defined in and are
+ * subject to the Apple Public Source License Version 1.2 (the 'License').
+ * You may not use this file except in compliance with the License. Please obtain
+ * a copy of the License at http://www.apple.com/publicsource and read it before
+ * using this file.
+ *
+ * This Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
+ * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
+ * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+ * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
+ * specific language governing rights and limitations under the License.
+ */
+
+
+/* crypto/dsa/dsa_lib.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * 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 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 acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS 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 AUTHOR OR 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.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+/* Original version from Steven Schoch <schoch@sheba.arc.nasa.gov> */
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/bn.h>
+#include <openssl/dsa.h>
+#include <openssl/asn1.h>
+
+const char *DSA_version="DSA" OPENSSL_VERSION_PTEXT;
+
+static const DSA_METHOD *default_DSA_method;
+static int dsa_meth_num = 0;
+static STACK_OF(CRYPTO_EX_DATA_FUNCS) *dsa_meth = NULL;
+
+void DSA_set_default_method(const DSA_METHOD *meth)
+{
+ default_DSA_method = meth;
+}
+
+const DSA_METHOD *DSA_get_default_method(void)
+{
+ if(!default_DSA_method) default_DSA_method = DSA_OpenSSL();
+ return default_DSA_method;
+}
+
+DSA *DSA_new(void)
+{
+ return DSA_new_method(NULL);
+}
+
+const DSA_METHOD *DSA_set_method(DSA *dsa, const DSA_METHOD *meth)
+{
+ const DSA_METHOD *mtmp;
+ mtmp = dsa->meth;
+ if (mtmp->finish) mtmp->finish(dsa);
+ dsa->meth = meth;
+ if (meth->init) meth->init(dsa);
+ return mtmp;
+}
+
+
+DSA *DSA_new_method(const DSA_METHOD *meth)
+ {
+ DSA *ret;
+
+ ret=(DSA *)Malloc(sizeof(DSA));
+ if (ret == NULL)
+ {
+ DSAerr(DSA_F_DSA_NEW,ERR_R_MALLOC_FAILURE);
+ return(NULL);
+ }
+ if(!default_DSA_method) default_DSA_method = DSA_OpenSSL();
+ if(meth) ret->meth = meth;
+ else ret->meth = default_DSA_method;
+ ret->pad=0;
+ ret->version=0;
+ ret->write_params=1;
+ ret->p=NULL;
+ ret->q=NULL;
+ ret->g=NULL;
+
+ ret->pub_key=NULL;
+ ret->priv_key=NULL;
+
+ ret->kinv=NULL;
+ ret->r=NULL;
+ ret->method_mont_p=NULL;
+
+ ret->references=1;
+ ret->flags=ret->meth->flags;
+ if ((ret->meth->init != NULL) && !ret->meth->init(ret))
+ {
+ Free(ret);
+ ret=NULL;
+ }
+ else
+ CRYPTO_new_ex_data(dsa_meth,ret,&ret->ex_data);
+
+ return(ret);
+ }
+
+void DSA_free(DSA *r)
+ {
+ int i;
+
+ if (r == NULL) return;
+
+ i=CRYPTO_add(&r->references,-1,CRYPTO_LOCK_DSA);
+#ifdef REF_PRINT
+ REF_PRINT("DSA",r);
+#endif
+ if (i > 0) return;
+#ifdef REF_CHECK
+ if (i < 0)
+ {
+ fprintf(stderr,"DSA_free, bad reference count\n");
+ abort();
+ }
+#endif
+
+ CRYPTO_free_ex_data(dsa_meth, r, &r->ex_data);
+
+ if(r->meth->finish) r->meth->finish(r);
+
+ if (r->p != NULL) BN_clear_free(r->p);
+ if (r->q != NULL) BN_clear_free(r->q);
+ if (r->g != NULL) BN_clear_free(r->g);
+ if (r->pub_key != NULL) BN_clear_free(r->pub_key);
+ if (r->priv_key != NULL) BN_clear_free(r->priv_key);
+ if (r->kinv != NULL) BN_clear_free(r->kinv);
+ if (r->r != NULL) BN_clear_free(r->r);
+ Free(r);
+ }
+
+#ifndef _OPENSSL_APPLE_CDSA_
+int DSA_size(DSA *r)
+ {
+ int ret,i;
+ ASN1_INTEGER bs;
+ unsigned char buf[4];
+
+ i=BN_num_bits(r->q);
+ 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);
+ return(ret);
+ }
+#endif /* _OPENSSL_APPLE_CDSA_ */
+
+int DSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
+ CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
+ {
+ dsa_meth_num++;
+ return(CRYPTO_get_ex_new_index(dsa_meth_num-1,
+ &dsa_meth,argl,argp,new_func,dup_func,free_func));
+ }
+
+int DSA_set_ex_data(DSA *d, int idx, void *arg)
+ {
+ return(CRYPTO_set_ex_data(&d->ex_data,idx,arg));
+ }
+
+void *DSA_get_ex_data(DSA *d, int idx)
+ {
+ return(CRYPTO_get_ex_data(&d->ex_data,idx));
+ }
+
+#ifndef NO_DH
+DH *DSA_dup_DH(DSA *r)
+ {
+ /* DSA has p, q, g, optional pub_key, optional priv_key.
+ * DH has p, optional length, g, optional pub_key, optional priv_key.
+ */
+
+ DH *ret = NULL;
+
+ if (r == NULL)
+ goto err;
+ ret = DH_new();
+ if (ret == NULL)
+ goto err;
+ if (r->p != NULL)
+ if ((ret->p = BN_dup(r->p)) == NULL)
+ goto err;
+ if (r->q != NULL)
+ ret->length = BN_num_bits(r->q);
+ if (r->g != NULL)
+ if ((ret->g = BN_dup(r->g)) == NULL)
+ goto err;
+ if (r->pub_key != NULL)
+ if ((ret->pub_key = BN_dup(r->pub_key)) == NULL)
+ goto err;
+ if (r->priv_key != NULL)
+ if ((ret->priv_key = BN_dup(r->priv_key)) == NULL)
+ goto err;
+
+ return ret;
+
+ err:
+ if (ret != NULL)
+ DH_free(ret);
+ return NULL;
+ }
+#endif
projects / apple / security.git / blobdiff