X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fdh%2Fdh_lib.c;h=83b3dc50c15a0a288ffcf2e5fa1a18d7dc3f4bb3;hp=a300b38396506784a696f7fa972f50b1fbac0eff;hb=2514fa79acba998c2a8d4e5a8288a5b3ae990377;hpb=7dfb0b774e6592dcbfe47015168a0ac8b44e2a17;ds=sidebyside

diff --git a/crypto/dh/dh_lib.c b/crypto/dh/dh_lib.c
index a300b38396..83b3dc50c1 100644
--- a/crypto/dh/dh_lib.c
+++ b/crypto/dh/dh_lib.c
@@ -58,21 +58,90 @@
 
 #include <stdio.h>
 #include "cryptlib.h"
-#include "bn.h"
-#include "dh.h"
+#include <openssl/bn.h>
+#include <openssl/dh.h>
+#ifndef OPENSSL_NO_ENGINE
+#include <openssl/engine.h>
+#endif
 
-char *DH_version="Diffie-Hellman part of SSLeay 0.9.0b 29-Jun-1998";
+const char DH_version[]="Diffie-Hellman" OPENSSL_VERSION_PTEXT;
 
-DH *DH_new()
+static const DH_METHOD *default_DH_method = NULL;
+
+void DH_set_default_method(const DH_METHOD *meth)
+	{
+	default_DH_method = meth;
+	}
+
+const DH_METHOD *DH_get_default_method(void)
+	{
+	if(!default_DH_method)
+		default_DH_method = DH_OpenSSL();
+	return default_DH_method;
+	}
+
+int DH_set_method(DH *dh, const DH_METHOD *meth)
+	{
+	/* NB: The caller is specifically setting a method, so it's not up to us
+	 * to deal with which ENGINE it comes from. */
+        const DH_METHOD *mtmp;
+        mtmp = dh->meth;
+        if (mtmp->finish) mtmp->finish(dh);
+#ifndef OPENSSL_NO_ENGINE
+	if (dh->engine)
+		{
+		ENGINE_finish(dh->engine);
+		dh->engine = NULL;
+		}
+#endif
+        dh->meth = meth;
+        if (meth->init) meth->init(dh);
+        return 1;
+	}
+
+DH *DH_new(void)
+	{
+	return DH_new_method(NULL);
+	}
+
+DH *DH_new_method(ENGINE *engine)
 	{
 	DH *ret;
 
-	ret=(DH *)Malloc(sizeof(DH));
+	ret=(DH *)OPENSSL_malloc(sizeof(DH));
 	if (ret == NULL)
 		{
-		DHerr(DH_F_DH_NEW,ERR_R_MALLOC_FAILURE);
+		DHerr(DH_F_DH_NEW_METHOD,ERR_R_MALLOC_FAILURE);
 		return(NULL);
 		}
+
+	ret->meth = DH_get_default_method();
+#ifndef OPENSSL_NO_ENGINE
+	if (engine)
+		{
+		if (!ENGINE_init(engine))
+			{
+			DHerr(DH_F_DH_NEW_METHOD, ERR_R_ENGINE_LIB);
+			OPENSSL_free(ret);
+			return NULL;
+			}
+		ret->engine = engine;
+		}
+	else
+		ret->engine = ENGINE_get_default_DH();
+	if(ret->engine)
+		{
+		ret->meth = ENGINE_get_DH(ret->engine);
+		if(!ret->meth)
+			{
+			DHerr(DH_F_DH_NEW_METHOD,ERR_R_ENGINE_LIB);
+			ENGINE_finish(ret->engine);
+			OPENSSL_free(ret);
+			return NULL;
+			}
+		}
+#endif
+
 	ret->pad=0;
 	ret->version=0;
 	ret->p=NULL;
@@ -80,21 +149,111 @@ DH *DH_new()
 	ret->length=0;
 	ret->pub_key=NULL;
 	ret->priv_key=NULL;
+	ret->q=NULL;
+	ret->j=NULL;
+	ret->seed = NULL;
+	ret->seedlen = 0;
+	ret->counter = NULL;
+	ret->method_mont_p=NULL;
+	ret->references = 1;
+	ret->flags=ret->meth->flags;
+	CRYPTO_new_ex_data(CRYPTO_EX_INDEX_DH, ret, &ret->ex_data);
+	if ((ret->meth->init != NULL) && !ret->meth->init(ret))
+		{
+#ifndef OPENSSL_NO_ENGINE
+		if (ret->engine)
+			ENGINE_finish(ret->engine);
+#endif
+		CRYPTO_free_ex_data(CRYPTO_EX_INDEX_DH, ret, &ret->ex_data);
+		OPENSSL_free(ret);
+		ret=NULL;
+		}
 	return(ret);
 	}
 
-void DH_free(r)
-DH *r;
+void DH_free(DH *r)
 	{
+	int i;
+	if(r == NULL) return;
+	i = CRYPTO_add(&r->references, -1, CRYPTO_LOCK_DH);
+#ifdef REF_PRINT
+	REF_PRINT("DH",r);
+#endif
+	if (i > 0) return;
+#ifdef REF_CHECK
+	if (i < 0)
+		{
+		fprintf(stderr,"DH_free, bad reference count\n");
+		abort();
+	}
+#endif
+
+	if (r->meth->finish)
+		r->meth->finish(r);
+#ifndef OPENSSL_NO_ENGINE
+	if (r->engine)
+		ENGINE_finish(r->engine);
+#endif
+
+	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_DH, r, &r->ex_data);
+
 	if (r->p != NULL) BN_clear_free(r->p);
 	if (r->g != NULL) BN_clear_free(r->g);
+	if (r->q != NULL) BN_clear_free(r->q);
+	if (r->j != NULL) BN_clear_free(r->j);
+	if (r->seed) OPENSSL_free(r->seed);
+	if (r->counter != NULL) BN_clear_free(r->counter);
 	if (r->pub_key != NULL) BN_clear_free(r->pub_key);
 	if (r->priv_key != NULL) BN_clear_free(r->priv_key);
-	Free(r);
+	OPENSSL_free(r);
 	}
 
-int DH_size(dh)
-DH *dh;
+int DH_up_ref(DH *r)
+	{
+	int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_DH);
+#ifdef REF_PRINT
+	REF_PRINT("DH",r);
+#endif
+#ifdef REF_CHECK
+	if (i < 2)
+		{
+		fprintf(stderr, "DH_up, bad reference count\n");
+		abort();
+		}
+#endif
+	return ((i > 1) ? 1 : 0);
+	}
+
+int DH_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_DH, argl, argp,
+				new_func, dup_func, free_func);
+        }
+
+int DH_set_ex_data(DH *d, int idx, void *arg)
+	{
+	return(CRYPTO_set_ex_data(&d->ex_data,idx,arg));
+	}
+
+void *DH_get_ex_data(DH *d, int idx)
+	{
+	return(CRYPTO_get_ex_data(&d->ex_data,idx));
+	}
+
+int DH_size(const DH *dh)
 	{
 	return(BN_num_bytes(dh->p));
 	}
+
+int DH_security_bits(const DH *dh)
+	{
+	int N;
+	if (dh->q)
+		N = BN_num_bits(dh->q);
+	else if (dh->length)
+		N = dh->length;
+	else
+		N = -1;
+	return BN_security_bits(BN_num_bits(dh->p), N);
+	}