222 lines
6.0 KiB
C
222 lines
6.0 KiB
C
/* pmeth_gn.c */
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/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
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* project 2006.
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*/
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/* ====================================================================
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* Copyright (c) 2006 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "cryptlib.h"
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#include <openssl/objects.h>
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#include <openssl/evp.h>
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#include <openssl/bn.h>
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#include "evp_locl.h"
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int EVP_PKEY_paramgen_init(EVP_PKEY_CTX *ctx)
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{
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int ret;
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if (!ctx || !ctx->pmeth || !ctx->pmeth->paramgen)
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{
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EVPerr(EVP_F_EVP_PKEY_PARAMGEN_INIT,
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EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
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return -2;
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}
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ctx->operation = EVP_PKEY_OP_PARAMGEN;
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if (!ctx->pmeth->paramgen_init)
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return 1;
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ret = ctx->pmeth->paramgen_init(ctx);
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if (ret <= 0)
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ctx->operation = EVP_PKEY_OP_UNDEFINED;
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return ret;
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}
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int EVP_PKEY_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey)
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{
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int ret;
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if (!ctx || !ctx->pmeth || !ctx->pmeth->paramgen)
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{
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EVPerr(EVP_F_EVP_PKEY_PARAMGEN,
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EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
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return -2;
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}
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if (ctx->operation != EVP_PKEY_OP_PARAMGEN)
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{
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EVPerr(EVP_F_EVP_PKEY_PARAMGEN, EVP_R_OPERATON_NOT_INITIALIZED);
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return -1;
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}
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if (!ppkey)
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return -1;
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if (!*ppkey)
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*ppkey = EVP_PKEY_new();
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ret = ctx->pmeth->paramgen(ctx, *ppkey);
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if (ret <= 0)
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{
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EVP_PKEY_free(*ppkey);
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*ppkey = NULL;
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}
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return ret;
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}
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int EVP_PKEY_keygen_init(EVP_PKEY_CTX *ctx)
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{
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int ret;
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if (!ctx || !ctx->pmeth || !ctx->pmeth->keygen)
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{
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EVPerr(EVP_F_EVP_PKEY_KEYGEN_INIT,
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EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
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return -2;
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}
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ctx->operation = EVP_PKEY_OP_KEYGEN;
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if (!ctx->pmeth->keygen_init)
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return 1;
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ret = ctx->pmeth->keygen_init(ctx);
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if (ret <= 0)
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ctx->operation = EVP_PKEY_OP_UNDEFINED;
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return ret;
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}
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int EVP_PKEY_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey)
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{
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int ret;
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if (!ctx || !ctx->pmeth || !ctx->pmeth->keygen)
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{
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EVPerr(EVP_F_EVP_PKEY_KEYGEN,
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EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
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return -2;
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}
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if (ctx->operation != EVP_PKEY_OP_KEYGEN)
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{
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EVPerr(EVP_F_EVP_PKEY_KEYGEN, EVP_R_OPERATON_NOT_INITIALIZED);
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return -1;
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}
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if (!ppkey)
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return -1;
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if (!*ppkey)
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*ppkey = EVP_PKEY_new();
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ret = ctx->pmeth->keygen(ctx, *ppkey);
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if (ret <= 0)
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{
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EVP_PKEY_free(*ppkey);
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*ppkey = NULL;
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}
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return ret;
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}
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void EVP_PKEY_CTX_set_cb(EVP_PKEY_CTX *ctx, EVP_PKEY_gen_cb *cb)
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{
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ctx->pkey_gencb = cb;
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}
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EVP_PKEY_gen_cb *EVP_PKEY_CTX_get_cb(EVP_PKEY_CTX *ctx)
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{
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return ctx->pkey_gencb;
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}
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/* "translation callback" to call EVP_PKEY_CTX callbacks using BN_GENCB
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* style callbacks.
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*/
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static int trans_cb(int a, int b, BN_GENCB *gcb)
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{
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EVP_PKEY_CTX *ctx = gcb->arg;
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ctx->keygen_info[0] = a;
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ctx->keygen_info[1] = b;
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return ctx->pkey_gencb(ctx);
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}
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void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *ctx)
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{
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BN_GENCB_set(cb, trans_cb, ctx)
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}
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int EVP_PKEY_CTX_get_keygen_info(EVP_PKEY_CTX *ctx, int idx)
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{
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if (idx == -1)
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return ctx->keygen_info_count;
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if (idx < 0 || idx > ctx->keygen_info_count)
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return 0;
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return ctx->keygen_info[idx];
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}
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EVP_PKEY *EVP_PKEY_new_mac_key(int type, ENGINE *e,
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const unsigned char *key, int keylen)
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{
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EVP_PKEY_CTX *mac_ctx = NULL;
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EVP_PKEY *mac_key = NULL;
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mac_ctx = EVP_PKEY_CTX_new_id(type, e);
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if (!mac_ctx)
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return NULL;
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if (EVP_PKEY_keygen_init(mac_ctx) <= 0)
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goto merr;
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if (EVP_PKEY_CTX_ctrl(mac_ctx, -1, EVP_PKEY_OP_KEYGEN,
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EVP_PKEY_CTRL_SET_MAC_KEY,
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keylen, (void *)key) <= 0)
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goto merr;
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if (EVP_PKEY_keygen(mac_ctx, &mac_key) <= 0)
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goto merr;
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merr:
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if (mac_ctx)
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EVP_PKEY_CTX_free(mac_ctx);
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return mac_key;
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}
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