/*
- * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
- * 2006.
- */
-/* ====================================================================
- * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
- *
- * 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 above 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 acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * licensing@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED 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 OpenSSL PROJECT OR
- * ITS 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.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
+ * Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
*
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
#include <stdio.h>
-#include "cryptlib.h"
+#include "internal/cryptlib.h"
#include <openssl/asn1t.h>
#include <openssl/x509.h>
#include <openssl/evp.h>
-#include <openssl/dh.h>
+#include "dh_locl.h"
#include <openssl/bn.h>
-#ifndef OPENSSL_NO_DSA
-# include <openssl/dsa.h>
-#endif
+#include <openssl/dsa.h>
#include <openssl/objects.h>
-#include "evp_locl.h"
+#include "internal/evp_int.h"
/* DH pkey context structure */
static int pkey_dh_init(EVP_PKEY_CTX *ctx)
{
DH_PKEY_CTX *dctx;
- dctx = OPENSSL_malloc(sizeof(DH_PKEY_CTX));
- if (!dctx)
+
+ dctx = OPENSSL_zalloc(sizeof(*dctx));
+ if (dctx == NULL)
return 0;
dctx->prime_len = 1024;
dctx->subprime_len = -1;
dctx->generator = 2;
- dctx->use_dsa = 0;
- dctx->md = NULL;
- dctx->rfc5114_param = 0;
-
dctx->kdf_type = EVP_PKEY_DH_KDF_NONE;
- dctx->kdf_oid = NULL;
- dctx->kdf_md = NULL;
- dctx->kdf_ukm = NULL;
- dctx->kdf_ukmlen = 0;
- dctx->kdf_outlen = 0;
ctx->data = dctx;
ctx->keygen_info = dctx->gentmp;
return 1;
}
+static void pkey_dh_cleanup(EVP_PKEY_CTX *ctx)
+{
+ DH_PKEY_CTX *dctx = ctx->data;
+ if (dctx != NULL) {
+ OPENSSL_free(dctx->kdf_ukm);
+ ASN1_OBJECT_free(dctx->kdf_oid);
+ OPENSSL_free(dctx);
+ }
+}
+
+
static int pkey_dh_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
{
DH_PKEY_CTX *dctx, *sctx;
dctx->kdf_type = sctx->kdf_type;
dctx->kdf_oid = OBJ_dup(sctx->kdf_oid);
- if (!dctx->kdf_oid)
+ if (dctx->kdf_oid == NULL)
return 0;
dctx->kdf_md = sctx->kdf_md;
- if (dctx->kdf_ukm) {
- dctx->kdf_ukm = BUF_memdup(sctx->kdf_ukm, sctx->kdf_ukmlen);
+ if (sctx->kdf_ukm != NULL) {
+ dctx->kdf_ukm = OPENSSL_memdup(sctx->kdf_ukm, sctx->kdf_ukmlen);
+ if (dctx->kdf_ukm == NULL)
+ return 0;
dctx->kdf_ukmlen = sctx->kdf_ukmlen;
}
dctx->kdf_outlen = sctx->kdf_outlen;
return 1;
}
-static void pkey_dh_cleanup(EVP_PKEY_CTX *ctx)
-{
- DH_PKEY_CTX *dctx = ctx->data;
- if (dctx) {
- if (dctx->kdf_ukm)
- OPENSSL_free(dctx->kdf_ukm);
- if (dctx->kdf_oid)
- ASN1_OBJECT_free(dctx->kdf_oid);
- OPENSSL_free(dctx);
- }
-}
-
static int pkey_dh_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
{
DH_PKEY_CTX *dctx = ctx->data;
case EVP_PKEY_CTRL_DH_KDF_TYPE:
if (p1 == -2)
return dctx->kdf_type;
+#ifdef OPENSSL_NO_CMS
+ if (p1 != EVP_PKEY_DH_KDF_NONE)
+#else
if (p1 != EVP_PKEY_DH_KDF_NONE && p1 != EVP_PKEY_DH_KDF_X9_42)
+#endif
return -2;
dctx->kdf_type = p1;
return 1;
return 1;
case EVP_PKEY_CTRL_DH_KDF_UKM:
- if (dctx->kdf_ukm)
- OPENSSL_free(dctx->kdf_ukm);
+ OPENSSL_free(dctx->kdf_ukm);
dctx->kdf_ukm = p2;
if (p2)
dctx->kdf_ukmlen = p1;
return dctx->kdf_ukmlen;
case EVP_PKEY_CTRL_DH_KDF_OID:
- if (dctx->kdf_oid)
- ASN1_OBJECT_free(dctx->kdf_oid);
+ ASN1_OBJECT_free(dctx->kdf_oid);
dctx->kdf_oid = p2;
return 1;
static int pkey_dh_ctrl_str(EVP_PKEY_CTX *ctx,
const char *type, const char *value)
{
- if (!strcmp(type, "dh_paramgen_prime_len")) {
+ if (strcmp(type, "dh_paramgen_prime_len") == 0) {
int len;
len = atoi(value);
return EVP_PKEY_CTX_set_dh_paramgen_prime_len(ctx, len);
}
- if (!strcmp(type, "dh_rfc5114")) {
+ if (strcmp(type, "dh_rfc5114") == 0) {
DH_PKEY_CTX *dctx = ctx->data;
int len;
len = atoi(value);
dctx->rfc5114_param = len;
return 1;
}
- if (!strcmp(type, "dh_paramgen_generator")) {
+ if (strcmp(type, "dh_paramgen_generator") == 0) {
int len;
len = atoi(value);
return EVP_PKEY_CTX_set_dh_paramgen_generator(ctx, len);
}
- if (!strcmp(type, "dh_paramgen_subprime_len")) {
+ if (strcmp(type, "dh_paramgen_subprime_len") == 0) {
int len;
len = atoi(value);
return EVP_PKEY_CTX_set_dh_paramgen_subprime_len(ctx, len);
}
- if (!strcmp(type, "dh_paramgen_type")) {
+ if (strcmp(type, "dh_paramgen_type") == 0) {
int typ;
typ = atoi(value);
return EVP_PKEY_CTX_set_dh_paramgen_type(ctx, typ);
if (dctx->use_dsa > 2)
return NULL;
ret = DSA_new();
- if (!ret)
+ if (ret == NULL)
return NULL;
if (subprime_len == -1) {
if (prime_len >= 2048)
if (ctx->pkey_gencb) {
pcb = BN_GENCB_new();
+ if (pcb == NULL)
+ return 0;
evp_pkey_set_cb_translate(pcb, ctx);
} else
pcb = NULL;
if (dctx->use_dsa) {
DSA *dsa_dh;
dsa_dh = dsa_dh_generate(dctx, pcb);
- if (pcb)
- BN_GENCB_free(pcb);
- if (!dsa_dh)
+ BN_GENCB_free(pcb);
+ if (dsa_dh == NULL)
return 0;
dh = DSA_dup_DH(dsa_dh);
DSA_free(dsa_dh);
}
#endif
dh = DH_new();
- if (!dh) {
- if (pcb)
- BN_GENCB_free(pcb);
+ if (dh == NULL) {
+ BN_GENCB_free(pcb);
return 0;
}
ret = DH_generate_parameters_ex(dh,
dctx->prime_len, dctx->generator, pcb);
- if (pcb)
- BN_GENCB_free(pcb);
+ BN_GENCB_free(pcb);
if (ret)
EVP_PKEY_assign_DH(pkey, dh);
else
return 0;
}
dh = DH_new();
- if (!dh)
+ if (dh == NULL)
return 0;
EVP_PKEY_assign(pkey, ctx->pmeth->pkey_id, dh);
/* Note: if error return, pkey is freed by parent routine */
return ret;
*keylen = ret;
return 1;
- } else if (dctx->kdf_type == EVP_PKEY_DH_KDF_X9_42) {
+ }
+#ifndef OPENSSL_NO_CMS
+ else if (dctx->kdf_type == EVP_PKEY_DH_KDF_X9_42) {
+
unsigned char *Z = NULL;
size_t Zlen = 0;
if (!dctx->kdf_outlen || !dctx->kdf_oid)
ret = 0;
Zlen = DH_size(dh);
Z = OPENSSL_malloc(Zlen);
- if(!Z) {
+ if (Z == NULL) {
goto err;
}
if (DH_compute_key_padded(Z, dhpub, dh) <= 0)
*keylen = dctx->kdf_outlen;
ret = 1;
err:
- if (Z) {
- OPENSSL_cleanse(Z, Zlen);
- OPENSSL_free(Z);
- }
+ OPENSSL_clear_free(Z, Zlen);
return ret;
}
- return 1;
+#endif
+ return 0;
}
const EVP_PKEY_METHOD dh_pkey_meth = {
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