X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fdh%2Fdh_lib.c;h=46d1a2b7b9a8d8b243264952ab0fe7f7b853aae2;hp=09965ee2ea8001e59679d6b8dd1fb0f3a5dfce2a;hb=0f113f3ee4d629ef9a4a30911b22b224772085e5;hpb=0b13e9f055d3f7be066dc2e89fc9f9822b12eca7

diff --git a/crypto/dh/dh_lib.c b/crypto/dh/dh_lib.c
index 09965ee2ea..46d1a2b7b9 100644
--- a/crypto/dh/dh_lib.c
+++ b/crypto/dh/dh_lib.c
@@ -5,21 +5,21 @@
  * 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:
@@ -34,10 +34,10 @@
  *     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 
+ * 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
@@ -49,7 +49,7 @@
  * 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
@@ -61,187 +61,203 @@
 #include <openssl/bn.h>
 #include <openssl/dh.h>
 #ifndef OPENSSL_NO_ENGINE
-#include <openssl/engine.h>
+# include <openssl/engine.h>
 #endif
 
-const char *DH_version="Diffie-Hellman" OPENSSL_VERSION_PTEXT;
+const char DH_version[] = "Diffie-Hellman" OPENSSL_VERSION_PTEXT;
 
 static const DH_METHOD *default_DH_method = NULL;
 
 void DH_set_default_method(const DH_METHOD *meth)
-	{
-	default_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;
-	}
+{
+    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);
+{
+    /*
+     * 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;
-		}
+    if (dh->engine) {
+        ENGINE_finish(dh->engine);
+        dh->engine = NULL;
+    }
 #endif
-        dh->meth = meth;
-        if (meth->init) meth->init(dh);
-        return 1;
-	}
+    dh->meth = meth;
+    if (meth->init)
+        meth->init(dh);
+    return 1;
+}
 
 DH *DH_new(void)
-	{
-	return DH_new_method(NULL);
-	}
+{
+    return DH_new_method(NULL);
+}
 
 DH *DH_new_method(ENGINE *engine)
-	{
-	DH *ret;
+{
+    DH *ret;
 
-	ret=(DH *)OPENSSL_malloc(sizeof(DH));
-	if (ret == NULL)
-		{
-		DHerr(DH_F_DH_NEW_METHOD,ERR_R_MALLOC_FAILURE);
-		return(NULL);
-		}
+    ret = (DH *)OPENSSL_malloc(sizeof(DH));
+    if (ret == NULL) {
+        DHerr(DH_F_DH_NEW_METHOD, ERR_R_MALLOC_FAILURE);
+        return (NULL);
+    }
 
-	ret->meth = DH_get_default_method();
+    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;
-			}
-		}
+    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;
-	ret->g=NULL;
-	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))
-		{
+    ret->pad = 0;
+    ret->version = 0;
+    ret->p = NULL;
+    ret->g = NULL;
+    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);
+        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);
-	}
+        CRYPTO_free_ex_data(CRYPTO_EX_INDEX_DH, ret, &ret->ex_data);
+        OPENSSL_free(ret);
+        ret = NULL;
+    }
+    return (ret);
+}
 
 void DH_free(DH *r)
-	{
-	int i;
-	if(r == NULL) return;
-	i = CRYPTO_add(&r->references, -1, CRYPTO_LOCK_DH);
+{
+    int i;
+    if (r == NULL)
+        return;
+    i = CRYPTO_add(&r->references, -1, CRYPTO_LOCK_DH);
 #ifdef REF_PRINT
-	REF_PRINT("DH",r);
+    REF_PRINT("DH", r);
 #endif
-	if (i > 0) return;
+    if (i > 0)
+        return;
 #ifdef REF_CHECK
-	if (i < 0)
-		{
-		fprintf(stderr,"DH_free, bad reference count\n");
-		abort();
-	}
+    if (i < 0) {
+        fprintf(stderr, "DH_free, bad reference count\n");
+        abort();
+    }
 #endif
 
-	if (r->meth->finish)
-		r->meth->finish(r);
+    if (r->meth->finish)
+        r->meth->finish(r);
 #ifndef OPENSSL_NO_ENGINE
-	if (r->engine)
-		ENGINE_finish(r->engine);
+    if (r->engine)
+        ENGINE_finish(r->engine);
 #endif
 
-	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_DH, r, &r->ex_data);
+    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);
-	OPENSSL_free(r);
-	}
+    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);
+    OPENSSL_free(r);
+}
 
 int DH_up_ref(DH *r)
-	{
-	int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_DH);
+{
+    int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_DH);
 #ifdef REF_PRINT
-	REF_PRINT("DH",r);
+    REF_PRINT("DH", r);
 #endif
 #ifdef REF_CHECK
-	if (i < 2)
-		{
-		fprintf(stderr, "DH_up, bad reference count\n");
-		abort();
-		}
+    if (i < 2) {
+        fprintf(stderr, "DH_up, bad reference count\n");
+        abort();
+    }
 #endif
-	return ((i > 1) ? 1 : 0);
-	}
+    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);
-        }
+                        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));
-	}
+{
+    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));
-	}
+{
+    return (CRYPTO_get_ex_data(&d->ex_data, idx));
+}
 
 int DH_size(const DH *dh)
-	{
-	return(BN_num_bytes(dh->p));
-	}
+{
+    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);
+}