/* pmeth_gn.c */ /* * 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). * */ #include <stdio.h> #include <stdlib.h> #include "cryptlib.h" #include <openssl/objects.h> #include <openssl/evp.h> #include <openssl/bn.h> #include "evp_locl.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; } 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 == NULL) return -1; if (*ppkey == NULL) *ppkey = EVP_PKEY_new(); if (*ppkey == NULL) { EVPerr(EVP_F_EVP_PKEY_PARAMGEN, ERR_R_MALLOC_FAILURE); return -1; } ret = ctx->pmeth->paramgen(ctx, *ppkey); if (ret <= 0) { EVP_PKEY_free(*ppkey); *ppkey = NULL; } return ret; } 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; } 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; } void EVP_PKEY_CTX_set_cb(EVP_PKEY_CTX *ctx, EVP_PKEY_gen_cb *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. */ 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); } void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *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]; } 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_ctrl(mac_ctx, -1, EVP_PKEY_OP_KEYGEN, EVP_PKEY_CTRL_SET_MAC_KEY, keylen, (void *)key) <= 0) goto merr; if (EVP_PKEY_keygen(mac_ctx, &mac_key) <= 0) goto merr; merr: if (mac_ctx) EVP_PKEY_CTX_free(mac_ctx); return mac_key; }