/*
- * 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 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
*
+ * Licensed under the Apache License 2.0 (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 <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 "internal/evp_int.h"
int generator;
int use_dsa;
int subprime_len;
+ int pad;
/* message digest used for parameter generation */
const EVP_MD *md;
int rfc5114_param;
+ int param_nid;
/* Keygen callback info */
int gentmp[2];
/* KDF (if any) to use for DH */
{
DH_PKEY_CTX *dctx;
- dctx = OPENSSL_zalloc(sizeof(*dctx));
- if (dctx == NULL)
+ if ((dctx = OPENSSL_zalloc(sizeof(*dctx))) == NULL) {
+ DHerr(DH_F_PKEY_DH_INIT, ERR_R_MALLOC_FAILURE);
return 0;
- dctx->prime_len = 1024;
+ }
+ dctx->prime_len = 2048;
dctx->subprime_len = -1;
dctx->generator = 2;
dctx->kdf_type = EVP_PKEY_DH_KDF_NONE;
return 1;
}
-static int pkey_dh_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
+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, const EVP_PKEY_CTX *src)
{
DH_PKEY_CTX *dctx, *sctx;
if (!pkey_dh_init(dst))
dctx->subprime_len = sctx->subprime_len;
dctx->generator = sctx->generator;
dctx->use_dsa = sctx->use_dsa;
+ dctx->pad = sctx->pad;
dctx->md = sctx->md;
dctx->rfc5114_param = sctx->rfc5114_param;
+ dctx->param_nid = sctx->param_nid;
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) {
- OPENSSL_free(dctx->kdf_ukm);
- 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;
dctx->subprime_len = p1;
return 1;
+ case EVP_PKEY_CTRL_DH_PAD:
+ dctx->pad = p1;
+ return 1;
+
case EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR:
if (dctx->use_dsa)
return -2;
return 1;
case EVP_PKEY_CTRL_DH_RFC5114:
- if (p1 < 1 || p1 > 3)
+ if (p1 < 1 || p1 > 3 || dctx->param_nid != NID_undef)
return -2;
dctx->rfc5114_param = p1;
return 1;
+ case EVP_PKEY_CTRL_DH_NID:
+ if (p1 <= 0 || dctx->rfc5114_param != 0)
+ return -2;
+ dctx->param_nid = p1;
+ return 1;
+
case EVP_PKEY_CTRL_PEER_KEY:
/* Default behaviour is OK */
return 1;
dctx->rfc5114_param = len;
return 1;
}
+ if (strcmp(type, "dh_param") == 0) {
+ DH_PKEY_CTX *dctx = ctx->data;
+ int nid = OBJ_sn2nid(value);
+
+ if (nid == NID_undef) {
+ DHerr(DH_F_PKEY_DH_CTRL_STR, DH_R_INVALID_PARAMETER_NAME);
+ return -2;
+ }
+ dctx->param_nid = nid;
+ return 1;
+ }
if (strcmp(type, "dh_paramgen_generator") == 0) {
int len;
len = atoi(value);
typ = atoi(value);
return EVP_PKEY_CTX_set_dh_paramgen_type(ctx, typ);
}
+ if (strcmp(type, "dh_pad") == 0) {
+ int pad;
+ pad = atoi(value);
+ return EVP_PKEY_CTX_set_dh_pad(ctx, pad);
+ }
return -2;
}
return 1;
}
+ if (dctx->param_nid != 0) {
+ if ((dh = DH_new_by_nid(dctx->param_nid)) == NULL)
+ return 0;
+ EVP_PKEY_assign(pkey, EVP_PKEY_DH, dh);
+ return 1;
+ }
+
if (ctx->pkey_gencb) {
pcb = BN_GENCB_new();
if (pcb == NULL)
static int pkey_dh_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
{
+ DH_PKEY_CTX *dctx = ctx->data;
DH *dh = NULL;
- if (ctx->pkey == NULL) {
+
+ if (ctx->pkey == NULL && dctx->param_nid == 0) {
DHerr(DH_F_PKEY_DH_KEYGEN, DH_R_NO_PARAMETERS_SET);
return 0;
}
- dh = DH_new();
+ if (dctx->param_nid != 0)
+ dh = DH_new_by_nid(dctx->param_nid);
+ else
+ dh = DH_new();
if (dh == NULL)
return 0;
EVP_PKEY_assign(pkey, ctx->pmeth->pkey_id, dh);
/* Note: if error return, pkey is freed by parent routine */
- if (!EVP_PKEY_copy_parameters(pkey, ctx->pkey))
+ if (ctx->pkey != NULL && !EVP_PKEY_copy_parameters(pkey, ctx->pkey))
return 0;
return DH_generate_key(pkey->pkey.dh);
}
*keylen = DH_size(dh);
return 1;
}
- ret = DH_compute_key(key, dhpub, dh);
+ if (dctx->pad)
+ ret = DH_compute_key_padded(key, dhpub, dh);
+ else
+ ret = DH_compute_key(key, dhpub, dh);
if (ret < 0)
return ret;
*keylen = ret;
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