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+/* crypto/evp/p_lib.c */
+/* Copyright (C) 1995-1997 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.]
+ */
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include "objects.h"
+#include "evp.h"
+#include "asn1_mac.h"
+#include "x509.h"
+
+/* EVPerr(EVP_F_D2I_PKEY,EVP_R_UNSUPPORTED_CIPHER); */
+/* EVPerr(EVP_F_D2I_PKEY,EVP_R_IV_TOO_LARGE); */
+
+#ifndef NOPROTO
+static void EVP_PKEY_free_it(EVP_PKEY *x);
+#else
+static void EVP_PKEY_free_it();
+#endif
+
+int EVP_PKEY_size(pkey)
+EVP_PKEY *pkey;
+ {
+#ifndef NO_RSA
+ if (pkey->type == EVP_PKEY_RSA)
+ return(RSA_size(pkey->pkey.rsa));
+ else
+#endif
+#ifndef NO_DSA
+ if (pkey->type == EVP_PKEY_DSA)
+ return(DSA_size(pkey->pkey.dsa));
+#endif
+ return(0);
+ }
+
+int EVP_PKEY_save_parameters(pkey,mode)
+EVP_PKEY *pkey;
+int mode;
+ {
+#ifndef NO_DSA
+ if (pkey->type == EVP_PKEY_DSA)
+ {
+ int ret=pkey->save_parameters=mode;
+
+ if (mode >= 0)
+ pkey->save_parameters=mode;
+ return(ret);
+ }
+#endif
+ return(0);
+ }
+
+int EVP_PKEY_copy_parameters(to,from)
+EVP_PKEY *to,*from;
+ {
+ if (to->type != from->type)
+ {
+ EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_DIFFERENT_KEY_TYPES);
+ return(0);
+ }
+
+ if (EVP_PKEY_missing_parameters(from))
+ {
+ EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_MISSING_PARMATERS);
+ return(0);
+ }
+#ifndef NO_DSA
+ if (to->type == EVP_PKEY_DSA)
+ {
+ BIGNUM *a;
+
+ if ((a=BN_dup(from->pkey.dsa->p)) == NULL) goto err;
+ if (to->pkey.dsa->p != NULL) BN_free(to->pkey.dsa->p);
+ to->pkey.dsa->p=a;
+
+ if ((a=BN_dup(from->pkey.dsa->q)) == NULL) goto err;
+ if (to->pkey.dsa->q != NULL) BN_free(to->pkey.dsa->q);
+ to->pkey.dsa->q=a;
+
+ if ((a=BN_dup(from->pkey.dsa->g)) == NULL) goto err;
+ if (to->pkey.dsa->g != NULL) BN_free(to->pkey.dsa->g);
+ to->pkey.dsa->g=a;
+ }
+#endif
+ return(1);
+err:
+ return(0);
+ }
+
+int EVP_PKEY_missing_parameters(pkey)
+EVP_PKEY *pkey;
+ {
+#ifndef NO_DSA
+ if (pkey->type == EVP_PKEY_DSA)
+ {
+ DSA *dsa;
+
+ dsa=pkey->pkey.dsa;
+ if ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))
+ return(1);
+ }
+#endif
+ return(0);
+ }
+
+EVP_PKEY *EVP_PKEY_new()
+ {
+ EVP_PKEY *ret;
+
+ ret=(EVP_PKEY *)Malloc(sizeof(EVP_PKEY));
+ if (ret == NULL)
+ {
+ EVPerr(EVP_F_EVP_PKEY_NEW,ERR_R_MALLOC_FAILURE);
+ return(NULL);
+ }
+ ret->type=EVP_PKEY_NONE;
+ ret->references=1;
+ ret->pkey.ptr=NULL;
+ ret->attributes=NULL;
+ ret->save_parameters=1;
+ return(ret);
+ }
+
+int EVP_PKEY_assign(pkey,type,key)
+EVP_PKEY *pkey;
+int type;
+char *key;
+ {
+ if (pkey == NULL) return(0);
+ if (pkey->pkey.ptr != NULL)
+ EVP_PKEY_free_it(pkey);
+ pkey->type=EVP_PKEY_type(type);
+ pkey->save_type=type;
+ pkey->pkey.ptr=key;
+ return(1);
+ }
+
+int EVP_PKEY_type(type)
+int type;
+ {
+ switch (type)
+ {
+ case EVP_PKEY_RSA:
+ case EVP_PKEY_RSA2:
+ return(EVP_PKEY_RSA);
+ case EVP_PKEY_DSA:
+ case EVP_PKEY_DSA2:
+ case EVP_PKEY_DSA3:
+ return(EVP_PKEY_DSA);
+ case EVP_PKEY_DH:
+ return(EVP_PKEY_DH);
+ default:
+ return(NID_undef);
+ }
+ }
+
+void EVP_PKEY_free(x)
+EVP_PKEY *x;
+ {
+ int i;
+
+ if (x == NULL) return;
+
+ i=CRYPTO_add(&x->references,-1,CRYPTO_LOCK_EVP_PKEY);
+ if (i > 0) return;
+#ifdef REF_CHECK
+ if (i < 0)
+ {
+ fprintf(stderr,"EVP_PKEY_free, bad reference count\n");
+ abort();
+ }
+#endif
+ EVP_PKEY_free_it(x);
+ Free((char *)x);
+ }
+
+static void EVP_PKEY_free_it(x)
+EVP_PKEY *x;
+ {
+ switch (x->type)
+ {
+#ifndef NO_RSA
+ case EVP_PKEY_RSA:
+ case EVP_PKEY_RSA2:
+ RSA_free(x->pkey.rsa);
+ break;
+#endif
+#ifndef NO_DSA
+ case EVP_PKEY_DSA:
+ case EVP_PKEY_DSA2:
+ case EVP_PKEY_DSA3:
+ DSA_free(x->pkey.dsa);
+ break;
+#endif
+#ifndef NO_DH
+ case EVP_PKEY_DH:
+ DH_free(x->pkey.dh);
+ break;
+#endif
+ }
+ }
+
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