diff options
Diffstat (limited to 'openssl/crypto/evp/pmeth_gn.c')
| -rw-r--r-- | openssl/crypto/evp/pmeth_gn.c | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/openssl/crypto/evp/pmeth_gn.c b/openssl/crypto/evp/pmeth_gn.c new file mode 100644 index 000000000..5d74161a0 --- /dev/null +++ b/openssl/crypto/evp/pmeth_gn.c @@ -0,0 +1,220 @@ +/* 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) + 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; + } + +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, + 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, 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; + } |