-/* pmeth_gn.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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 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 <stdlib.h>
-#include "cryptlib.h"
+#include <openssl/core.h>
+#include <openssl/core_names.h>
+#include "internal/cryptlib.h"
+#include "internal/core.h"
#include <openssl/objects.h>
#include <openssl/evp.h>
-#include "evp_locl.h"
+#include "crypto/bn.h"
+#include "crypto/asn1.h"
+#include "crypto/evp.h"
+#include "evp_local.h"
-int EVP_PKEY_paramgen_init(EVP_PKEY_CTX *ctx)
- {
- int ret;
- if (!ctx || !ctx->pmeth || !ctx->pmeth->paramgen)
- {
- EVPerr(EVP_F_EVP_PKEY_PARAMGEN_INIT,
- EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return -2;
- }
- ctx->operation = EVP_PKEY_OP_PARAMGEN;
- if (!ctx->pmeth->paramgen_init)
- return 1;
- ret = ctx->pmeth->paramgen_init(ctx);
- if (ret <= 0)
- ctx->operation = EVP_PKEY_OP_UNDEFINED;
- return ret;
- }
+#if !defined(FIPS_MODE) && !defined(OPENSSL_NO_EC)
+# define TMP_SM2_HACK
+#endif
-int EVP_PKEY_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey)
- {
- int ret;
- if (!ctx || !ctx->pmeth || !ctx->pmeth->paramgen)
- {
- EVPerr(EVP_F_EVP_PKEY_PARAMGEN,
- EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return -2;
- }
-
- if (ctx->operation != EVP_PKEY_OP_PARAMGEN)
- {
- EVPerr(EVP_F_EVP_PKEY_PARAMGEN, EVP_R_OPERATON_NOT_INITIALIZED);
- return -1;
- }
-
- if (!ppkey)
- return -1;
-
- if (!*ppkey)
- *ppkey = EVP_PKEY_new();
-
- ret = ctx->pmeth->paramgen(ctx, *ppkey);
- if (ret <= 0)
- {
- EVP_PKEY_free(*ppkey);
- *ppkey = NULL;
- }
- return ret;
- }
+/* TODO(3.0) remove when provider SM2 key generation is implemented */
+#ifdef TMP_SM2_HACK
+# include <openssl/ec.h>
+# include <openssl/serializer.h>
+# include "internal/sizes.h"
+#endif
+
+static int gen_init(EVP_PKEY_CTX *ctx, int operation)
+{
+ int ret = 0;
+
+ if (ctx == NULL)
+ goto not_supported;
+
+ evp_pkey_ctx_free_old_ops(ctx);
+ ctx->operation = operation;
+
+ if (ctx->keymgmt == NULL || ctx->keymgmt->gen_init == NULL)
+ goto legacy;
+
+/* TODO remove when provider SM2 key generation is implemented */
+#ifdef TMP_SM2_HACK
+ if (ctx->pmeth != NULL && ctx->pmeth->pkey_id == EVP_PKEY_SM2)
+ goto legacy;
+#endif
+
+ switch (operation) {
+ case EVP_PKEY_OP_PARAMGEN:
+ ctx->op.keymgmt.genctx =
+ evp_keymgmt_gen_init(ctx->keymgmt,
+ OSSL_KEYMGMT_SELECT_ALL_PARAMETERS);
+ break;
+ case EVP_PKEY_OP_KEYGEN:
+ ctx->op.keymgmt.genctx =
+ evp_keymgmt_gen_init(ctx->keymgmt, OSSL_KEYMGMT_SELECT_KEYPAIR);
+ break;
+ }
+
+ if (ctx->op.keymgmt.genctx == NULL)
+ ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
+ else
+ ret = 1;
+ goto end;
+
+ legacy:
+#ifdef FIPS_MODE
+ goto not_supported;
+#else
+ if (ctx->pmeth == NULL
+ || (operation == EVP_PKEY_OP_PARAMGEN
+ && ctx->pmeth->paramgen == NULL)
+ || (operation == EVP_PKEY_OP_KEYGEN
+ && ctx->pmeth->keygen == NULL))
+ goto not_supported;
+
+ ret = 1;
+ switch (operation) {
+ case EVP_PKEY_OP_PARAMGEN:
+ if (ctx->pmeth->paramgen_init != NULL)
+ ret = ctx->pmeth->paramgen_init(ctx);
+ break;
+ case EVP_PKEY_OP_KEYGEN:
+ if (ctx->pmeth->keygen_init != NULL)
+ ret = ctx->pmeth->keygen_init(ctx);
+ break;
+ }
+#endif
+
+ end:
+ if (ret <= 0)
+ ctx->operation = EVP_PKEY_OP_UNDEFINED;
+ return ret;
+
+ not_supported:
+ ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ ret = -2;
+ goto end;
+}
+
+int EVP_PKEY_paramgen_init(EVP_PKEY_CTX *ctx)
+{
+ return gen_init(ctx, EVP_PKEY_OP_PARAMGEN);
+}
int EVP_PKEY_keygen_init(EVP_PKEY_CTX *ctx)
- {
- int ret;
- if (!ctx || !ctx->pmeth || !ctx->pmeth->keygen)
- {
- EVPerr(EVP_F_EVP_PKEY_KEYGEN_INIT,
- EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return -2;
- }
- ctx->operation = EVP_PKEY_OP_KEYGEN;
- if (!ctx->pmeth->keygen_init)
- return 1;
- ret = ctx->pmeth->keygen_init(ctx);
- if (ret <= 0)
- ctx->operation = EVP_PKEY_OP_UNDEFINED;
- return ret;
- }
+{
+ return gen_init(ctx, EVP_PKEY_OP_KEYGEN);
+}
+
+static int ossl_callback_to_pkey_gencb(const OSSL_PARAM params[], void *arg)
+{
+ EVP_PKEY_CTX *ctx = arg;
+ const OSSL_PARAM *param = NULL;
+ int p = -1, n = -1;
+
+ if (ctx->pkey_gencb == NULL)
+ return 1; /* No callback? That's fine */
+
+ if ((param = OSSL_PARAM_locate_const(params, OSSL_GEN_PARAM_POTENTIAL))
+ == NULL
+ || !OSSL_PARAM_get_int(param, &p))
+ return 0;
+ if ((param = OSSL_PARAM_locate_const(params, OSSL_GEN_PARAM_ITERATION))
+ == NULL
+ || !OSSL_PARAM_get_int(param, &n))
+ return 0;
+
+ ctx->keygen_info[0] = p;
+ ctx->keygen_info[1] = n;
+
+ return ctx->pkey_gencb(ctx);
+}
+
+int EVP_PKEY_gen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey)
+{
+ int ret = 0;
+ OSSL_CALLBACK cb;
+ EVP_PKEY *allocated_pkey = NULL;
+
+ if (ppkey == NULL)
+ return -1;
+
+ if (ctx == NULL)
+ goto not_supported;
+
+ if ((ctx->operation & EVP_PKEY_OP_TYPE_GEN) == 0)
+ goto not_initialized;
+
+ if (*ppkey == NULL)
+ *ppkey = allocated_pkey = EVP_PKEY_new();
+
+ if (*ppkey == NULL) {
+ ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
+ return -1;
+ }
+
+ if (ctx->op.keymgmt.genctx == NULL)
+ goto legacy;
+
+ ret = 1;
+ if (ctx->pkey != NULL) {
+ EVP_KEYMGMT *tmp_keymgmt = ctx->keymgmt;
+ void *keydata =
+ evp_pkey_export_to_provider(ctx->pkey, ctx->libctx,
+ &tmp_keymgmt, ctx->propquery);
+
+ if (keydata == NULL)
+ goto not_supported;
+ ret = evp_keymgmt_gen_set_template(ctx->keymgmt,
+ ctx->op.keymgmt.genctx, keydata);
+ }
+
+ /*
+ * the returned value from evp_keymgmt_util_gen() is cached in *ppkey,
+ * so we so not need to save it, just check it.
+ */
+ ret = ret
+ && (evp_keymgmt_util_gen(*ppkey, ctx->keymgmt, ctx->op.keymgmt.genctx,
+ ossl_callback_to_pkey_gencb, ctx)
+ != NULL);
+
+#ifndef FIPS_MODE
+ /* In case |*ppkey| was originally a legacy key */
+ if (ret)
+ evp_pkey_free_legacy(*ppkey);
+#endif
+
+/* TODO remove when SM2 key have been cleanly separated from EC keys */
+#ifdef TMP_SM2_HACK
+ /*
+ * Legacy SM2 keys are implemented as EC_KEY with a twist. The legacy
+ * key generation detects the SM2 curve and "magically" changes the pkey
+ * id accordingly.
+ * Since we don't have SM2 in the provider implementation, we need to
+ * downgrade the generated provider side key to a legacy one under the
+ * same conditions.
+ *
+ * THIS IS AN UGLY BUT TEMPORARY HACK
+ */
+ {
+ char curve_name[OSSL_MAX_NAME_SIZE] = "";
+
+ if (EVP_PKEY_CTX_get_ec_paramgen_curve_name(ctx, curve_name,
+ sizeof(curve_name)) < 1
+ || strcmp(curve_name, "SM2") != 0)
+ goto end;
+ }
+
+ if (!evp_pkey_downgrade(*ppkey)
+ || !EVP_PKEY_set_alias_type(*ppkey, EVP_PKEY_SM2))
+ ret = 0;
+#endif
+ goto end;
+
+ legacy:
+#ifdef FIPS_MODE
+ goto not_supported;
+#else
+ if (ctx->pkey && !evp_pkey_downgrade(ctx->pkey))
+ goto not_accessible;
+ switch (ctx->operation) {
+ case EVP_PKEY_OP_PARAMGEN:
+ ret = ctx->pmeth->paramgen(ctx, *ppkey);
+ break;
+ case EVP_PKEY_OP_KEYGEN:
+ ret = ctx->pmeth->keygen(ctx, *ppkey);
+ break;
+ default:
+ goto not_supported;
+ }
+#endif
+
+ end:
+ if (ret <= 0) {
+ if (allocated_pkey != NULL)
+ *ppkey = NULL;
+ EVP_PKEY_free(allocated_pkey);
+ }
+ return ret;
+
+ not_supported:
+ ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ ret = -2;
+ goto end;
+ not_initialized:
+ ERR_raise(ERR_LIB_EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+ ret = -1;
+ goto end;
+#ifndef FIPS_MODE
+ not_accessible:
+ ERR_raise(ERR_LIB_EVP, EVP_R_INACCESSIBLE_DOMAIN_PARAMETERS);
+ ret = -1;
+ goto end;
+#endif
+}
+
+int EVP_PKEY_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey)
+{
+ if (ctx->operation != EVP_PKEY_OP_PARAMGEN) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+ return -1;
+ }
+ return EVP_PKEY_gen(ctx, ppkey);
+}
int EVP_PKEY_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey)
- {
- int ret;
-
- if (!ctx || !ctx->pmeth || !ctx->pmeth->keygen)
- {
- EVPerr(EVP_F_EVP_PKEY_KEYGEN,
- EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
- return -2;
- }
- if (ctx->operation != EVP_PKEY_OP_KEYGEN)
- {
- EVPerr(EVP_F_EVP_PKEY_KEYGEN, EVP_R_OPERATON_NOT_INITIALIZED);
- return -1;
- }
-
- if (!ppkey)
- return -1;
-
- if (!*ppkey)
- *ppkey = EVP_PKEY_new();
-
- ret = ctx->pmeth->keygen(ctx, *ppkey);
- if (ret <= 0)
- {
- EVP_PKEY_free(*ppkey);
- *ppkey = NULL;
- }
- return ret;
- }
+{
+ if (ctx->operation != EVP_PKEY_OP_KEYGEN) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+ return -1;
+ }
+ return EVP_PKEY_gen(ctx, ppkey);
+}
void EVP_PKEY_CTX_set_cb(EVP_PKEY_CTX *ctx, EVP_PKEY_gen_cb *cb)
- {
- ctx->pkey_gencb = cb;
- }
+{
+ ctx->pkey_gencb = cb;
+}
+
+EVP_PKEY_gen_cb *EVP_PKEY_CTX_get_cb(EVP_PKEY_CTX *ctx)
+{
+ return ctx->pkey_gencb;
+}
-/* "translation callback" to call EVP_PKEY_CTX callbacks using BN_GENCB
- * style callbacks.
+/*
+ * "translation callback" to call EVP_PKEY_CTX callbacks using BN_GENCB style
+ * callbacks.
*/
static int trans_cb(int a, int b, BN_GENCB *gcb)
- {
- EVP_PKEY_CTX *ctx = gcb->arg;
- ctx->keygen_info[0] = a;
- ctx->keygen_info[1] = b;
- return ctx->pkey_gencb(ctx);
- }
+{
+ EVP_PKEY_CTX *ctx = BN_GENCB_get_arg(gcb);
+ ctx->keygen_info[0] = a;
+ ctx->keygen_info[1] = b;
+ return ctx->pkey_gencb(ctx);
+}
void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *ctx)
- {
- BN_GENCB_set(cb, trans_cb, ctx)
- }
+{
+ BN_GENCB_set(cb, trans_cb, ctx);
+}
int EVP_PKEY_CTX_get_keygen_info(EVP_PKEY_CTX *ctx, int idx)
- {
- if (idx == -1)
- return ctx->keygen_info_count;
- if (idx < 0 || idx > ctx->keygen_info_count)
- return 0;
- return ctx->keygen_info[idx];
- }
+{
+ if (idx == -1)
+ return ctx->keygen_info_count;
+ if (idx < 0 || idx > ctx->keygen_info_count)
+ return 0;
+ return ctx->keygen_info[idx];
+}
+
+#ifndef FIPS_MODE
+
+EVP_PKEY *EVP_PKEY_new_mac_key(int type, ENGINE *e,
+ const unsigned char *key, int keylen)
+{
+ EVP_PKEY_CTX *mac_ctx = NULL;
+ EVP_PKEY *mac_key = NULL;
+ mac_ctx = EVP_PKEY_CTX_new_id(type, e);
+ if (!mac_ctx)
+ return NULL;
+ if (EVP_PKEY_keygen_init(mac_ctx) <= 0)
+ goto merr;
+ if (EVP_PKEY_CTX_set_mac_key(mac_ctx, key, keylen) <= 0)
+ goto merr;
+ if (EVP_PKEY_keygen(mac_ctx, &mac_key) <= 0)
+ goto merr;
+ merr:
+ EVP_PKEY_CTX_free(mac_ctx);
+ return mac_key;
+}
+
+#endif /* FIPS_MODE */
+
+/*- All methods below can also be used in FIPS_MODE */
+
+static int fromdata_init(EVP_PKEY_CTX *ctx, int operation)
+{
+ if (ctx == NULL || ctx->keytype == NULL)
+ goto not_supported;
+
+ evp_pkey_ctx_free_old_ops(ctx);
+ if (ctx->keymgmt == NULL)
+ goto not_supported;
+
+ ctx->operation = operation;
+ return 1;
+
+ not_supported:
+ ctx->operation = EVP_PKEY_OP_UNDEFINED;
+ ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return -2;
+}
+
+int EVP_PKEY_param_fromdata_init(EVP_PKEY_CTX *ctx)
+{
+ return fromdata_init(ctx, EVP_PKEY_OP_PARAMFROMDATA);
+}
+
+int EVP_PKEY_key_fromdata_init(EVP_PKEY_CTX *ctx)
+{
+ return fromdata_init(ctx, EVP_PKEY_OP_KEYFROMDATA);
+}
+
+int EVP_PKEY_fromdata(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey, OSSL_PARAM params[])
+{
+ void *keydata = NULL;
+ int selection;
+
+ if (ctx == NULL || (ctx->operation & EVP_PKEY_OP_TYPE_FROMDATA) == 0) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return -2;
+ }
+
+ if (ppkey == NULL)
+ return -1;
+
+ if (*ppkey == NULL)
+ *ppkey = EVP_PKEY_new();
+
+ if (*ppkey == NULL) {
+ ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
+ return -1;
+ }
+
+ if (ctx->operation == EVP_PKEY_OP_PARAMFROMDATA)
+ selection = OSSL_KEYMGMT_SELECT_ALL_PARAMETERS;
+ else
+ selection = OSSL_KEYMGMT_SELECT_ALL;
+ keydata = evp_keymgmt_util_fromdata(*ppkey, ctx->keymgmt, selection,
+ params);
+
+ if (keydata == NULL)
+ return 0;
+ /* keydata is cached in *ppkey, so we need not bother with it further */
+ return 1;
+}
+
+/*
+ * TODO(3.0) Re-evaluate the names, it's possible that we find these to be
+ * better:
+ *
+ * EVP_PKEY_param_settable()
+ * EVP_PKEY_param_gettable()
+ */
+const OSSL_PARAM *EVP_PKEY_param_fromdata_settable(EVP_PKEY_CTX *ctx)
+{
+ /* We call fromdata_init to get ctx->keymgmt populated */
+ if (fromdata_init(ctx, EVP_PKEY_OP_UNDEFINED))
+ return evp_keymgmt_import_types(ctx->keymgmt,
+ OSSL_KEYMGMT_SELECT_ALL_PARAMETERS);
+ return NULL;
+}
+
+const OSSL_PARAM *EVP_PKEY_key_fromdata_settable(EVP_PKEY_CTX *ctx)
+{
+ /* We call fromdata_init to get ctx->keymgmt populated */
+ if (fromdata_init(ctx, EVP_PKEY_OP_UNDEFINED))
+ return evp_keymgmt_import_types(ctx->keymgmt,
+ OSSL_KEYMGMT_SELECT_ALL);
+ return NULL;
+}
projects / openssl.git / blobdiff