X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fdsa%2Fdsa_lib.c;h=b78fadd46792b8be65cc95073f8f6ae76503a843;hp=f4400706e7462697ed6d8339d67e654c1af317c6;hb=1d97c8435171a7af575f73c526d79e1ef0ee5960;hpb=5f32680329648886701f5b5832239eecf0b38390

diff --git a/crypto/dsa/dsa_lib.c b/crypto/dsa/dsa_lib.c
index f4400706e7..b78fadd467 100644
--- a/crypto/dsa/dsa_lib.c
+++ b/crypto/dsa/dsa_lib.c
@@ -60,29 +60,100 @@
 
 #include <stdio.h>
 #include "cryptlib.h"
-#include "bn.h"
-#include "dsa.h"
-#include "asn1.h"
+#include <openssl/bn.h>
+#include <openssl/dsa.h>
+#include <openssl/asn1.h>
+#ifndef OPENSSL_NO_ENGINE
+#include <openssl/engine.h>
+#endif
+#ifndef OPENSSL_NO_DH
+#include <openssl/dh.h>
+#endif
+
+const char DSA_version[]="DSA" OPENSSL_VERSION_PTEXT;
+
+static const DSA_METHOD *default_DSA_method = 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;
+	}
 
-char *DSA_version="DSA part of SSLeay/OpenSSL 0.9.1c 23-Dec-1998";
+DSA *DSA_new(void)
+	{
+	return DSA_new_method(NULL);
+	}
 
-DSA *DSA_new()
+int DSA_set_method(DSA *dsa, const DSA_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 DSA_METHOD *mtmp;
+        mtmp = dsa->meth;
+        if (mtmp->finish) mtmp->finish(dsa);
+#ifndef OPENSSL_NO_ENGINE
+	if (dsa->engine)
+		{
+		ENGINE_finish(dsa->engine);
+		dsa->engine = NULL;
+		}
+#endif
+        dsa->meth = meth;
+        if (meth->init) meth->init(dsa);
+        return 1;
+	}
+
+DSA *DSA_new_method(ENGINE *engine)
 	{
 	DSA *ret;
 
-	ret=(DSA *)Malloc(sizeof(DSA));
+	ret=(DSA *)OPENSSL_malloc(sizeof(DSA));
 	if (ret == NULL)
 		{
-		DSAerr(DSA_F_DSA_NEW,ERR_R_MALLOC_FAILURE);
+		DSAerr(DSA_F_DSA_NEW_METHOD,ERR_R_MALLOC_FAILURE);
 		return(NULL);
 		}
+	ret->meth = DSA_get_default_method();
+#ifndef OPENSSL_NO_ENGINE
+	if (engine)
+		{
+		if (!ENGINE_init(engine))
+			{
+			DSAerr(DSA_F_DSA_NEW_METHOD, ERR_R_ENGINE_LIB);
+			OPENSSL_free(ret);
+			return NULL;
+			}
+		ret->engine = engine;
+		}
+	else
+		ret->engine = ENGINE_get_default_DSA();
+	if(ret->engine)
+		{
+		ret->meth = ENGINE_get_DSA(ret->engine);
+		if(!ret->meth)
+			{
+			DSAerr(DSA_F_DSA_NEW_METHOD,
+				ERR_R_ENGINE_LIB);
+			ENGINE_finish(ret->engine);
+			OPENSSL_free(ret);
+			return NULL;
+			}
+		}
+#endif
+
 	ret->pad=0;
 	ret->version=0;
 	ret->write_params=1;
 	ret->p=NULL;
 	ret->q=NULL;
 	ret->g=NULL;
-	ret->flags=DSA_FLAG_CACHE_MONT_P;
 
 	ret->pub_key=NULL;
 	ret->priv_key=NULL;
@@ -92,11 +163,23 @@ DSA *DSA_new()
 	ret->method_mont_p=NULL;
 
 	ret->references=1;
+	ret->flags=ret->meth->flags & ~DSA_FLAG_NON_FIPS_ALLOW;
+	CRYPTO_new_ex_data(CRYPTO_EX_INDEX_DSA, 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_DSA, ret, &ret->ex_data);
+		OPENSSL_free(ret);
+		ret=NULL;
+		}
+	
 	return(ret);
 	}
 
-void DSA_free(r)
-DSA *r;
+void DSA_free(DSA *r)
 	{
 	int i;
 
@@ -115,6 +198,15 @@ DSA *r;
 		}
 #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_DSA, r, &r->ex_data);
+
 	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);
@@ -122,17 +214,33 @@ DSA *r;
 	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);
-	if (r->method_mont_p != NULL)
-		BN_MONT_CTX_free((BN_MONT_CTX *)r->method_mont_p);
-	Free(r);
+	OPENSSL_free(r);
 	}
 
-int DSA_size(r)
-DSA *r;
+int DSA_up_ref(DSA *r)
+	{
+	int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_DSA);
+#ifdef REF_PRINT
+	REF_PRINT("DSA",r);
+#endif
+#ifdef REF_CHECK
+	if (i < 2)
+		{
+		fprintf(stderr, "DSA_up_ref, bad reference count\n");
+		abort();
+		}
+#endif
+	return ((i > 1) ? 1 : 0);
+	}
+
+int DSA_size(const DSA *r)
 	{
 	int ret,i;
 	ASN1_INTEGER bs;
-	unsigned char buf[4];
+	unsigned char buf[4];	/* 4 bytes looks really small.
+				   However, i2d_ASN1_INTEGER() will not look
+				   beyond the first byte, as long as the second
+				   parameter is NULL. */
 
 	i=BN_num_bits(r->q);
 	bs.length=(i+7)/8;
@@ -147,3 +255,67 @@ DSA *r;
 	return(ret);
 	}
 
+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)
+        {
+	return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DSA, 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));
+	}
+
+int DSA_security_bits(const DSA *d)
+	{
+	return BN_security_bits(BN_num_bits(d->p), BN_num_bits(d->q));
+	}
+
+#ifndef OPENSSL_NO_DH
+DH *DSA_dup_DH(const 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,
+	 * optional q.
+	 */ 
+
+	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 ((ret->q = BN_dup(r->q)) == NULL)
+			goto err;
+		}
+	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