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/* pmeth_gn.c */ |
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/* |
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* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project |
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* 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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|
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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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|
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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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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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|
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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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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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|
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if (ctx->operation != EVP_PKEY_OP_PARAMGEN) { |
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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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|
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if (ppkey == NULL) |
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return -1; |
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|
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if (*ppkey == NULL) |
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*ppkey = EVP_PKEY_new(); |
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|
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if (*ppkey == NULL) { |
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EVPerr(EVP_F_EVP_PKEY_PARAMGEN, ERR_R_MALLOC_FAILURE); |
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return -1; |
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} |
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|
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ret = ctx->pmeth->paramgen(ctx, *ppkey); |
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if (ret <= 0) { |
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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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|
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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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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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|
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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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|
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if (!ctx || !ctx->pmeth || !ctx->pmeth->keygen) { |
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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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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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|
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if (!ppkey) |
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return -1; |
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|
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if (!*ppkey) |
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*ppkey = EVP_PKEY_new(); |
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|
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ret = ctx->pmeth->keygen(ctx, *ppkey); |
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if (ret <= 0) { |
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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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|
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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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|
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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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|
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/* |
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* "translation callback" to call EVP_PKEY_CTX callbacks using BN_GENCB style |
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* callbacks. |
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*/ |
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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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|
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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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|
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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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|
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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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} |