| /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
| * project 2007. |
| */ |
| /* ==================================================================== |
| * Copyright (c) 2007 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 "cryptlib.h" |
| #include <openssl/evp.h> |
| #include "asn1_locl.h" |
| |
| #define HMAC_TEST_PRIVATE_KEY_FORMAT |
| |
| /* HMAC "ASN1" method. This is just here to indicate the |
| * maximum HMAC output length and to free up an HMAC |
| * key. |
| */ |
| |
| static int hmac_size(const EVP_PKEY *pkey) |
| { |
| return EVP_MAX_MD_SIZE; |
| } |
| |
| static void hmac_key_free(EVP_PKEY *pkey) |
| { |
| ASN1_OCTET_STRING *os = (ASN1_OCTET_STRING *)pkey->pkey.ptr; |
| if (os) |
| { |
| if (os->data) |
| OPENSSL_cleanse(os->data, os->length); |
| ASN1_OCTET_STRING_free(os); |
| } |
| } |
| |
| |
| static int hmac_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2) |
| { |
| switch (op) |
| { |
| case ASN1_PKEY_CTRL_DEFAULT_MD_NID: |
| *(int *)arg2 = NID_sha1; |
| return 1; |
| |
| default: |
| return -2; |
| } |
| } |
| |
| #ifdef HMAC_TEST_PRIVATE_KEY_FORMAT |
| /* A bogus private key format for test purposes. This is simply the |
| * HMAC key with "HMAC PRIVATE KEY" in the headers. When enabled the |
| * genpkey utility can be used to "generate" HMAC keys. |
| */ |
| |
| static int old_hmac_decode(EVP_PKEY *pkey, |
| const unsigned char **pder, int derlen) |
| { |
| ASN1_OCTET_STRING *os; |
| os = ASN1_OCTET_STRING_new(); |
| if (!os || !ASN1_OCTET_STRING_set(os, *pder, derlen)) |
| return 0; |
| EVP_PKEY_assign(pkey, EVP_PKEY_HMAC, os); |
| return 1; |
| } |
| |
| static int old_hmac_encode(const EVP_PKEY *pkey, unsigned char **pder) |
| { |
| int inc; |
| ASN1_OCTET_STRING *os = (ASN1_OCTET_STRING *)pkey->pkey.ptr; |
| if (pder) |
| { |
| if (!*pder) |
| { |
| *pder = OPENSSL_malloc(os->length); |
| inc = 0; |
| } |
| else inc = 1; |
| |
| memcpy(*pder, os->data, os->length); |
| |
| if (inc) |
| *pder += os->length; |
| } |
| |
| return os->length; |
| } |
| |
| #endif |
| |
| const EVP_PKEY_ASN1_METHOD hmac_asn1_meth = |
| { |
| EVP_PKEY_HMAC, |
| EVP_PKEY_HMAC, |
| 0, |
| |
| "HMAC", |
| "OpenSSL HMAC method", |
| |
| 0,0,0,0, |
| |
| 0,0,0, |
| |
| hmac_size, |
| 0, |
| 0,0,0,0,0,0, |
| |
| hmac_key_free, |
| hmac_pkey_ctrl, |
| #ifdef HMAC_TEST_PRIVATE_KEY_FORMAT |
| old_hmac_decode, |
| old_hmac_encode |
| #else |
| 0,0 |
| #endif |
| }; |
| |