1221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL 2e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * project 2007. 3e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu */ 4e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu/* ==================================================================== 5e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * Copyright (c) 2007 The OpenSSL Project. All rights reserved. 6e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * 7e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * Redistribution and use in source and binary forms, with or without 8e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * modification, are permitted provided that the following conditions 9e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * are met: 10e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * 11e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * 1. Redistributions of source code must retain the above copyright 12e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * notice, this list of conditions and the following disclaimer. 13e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * 14e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * 2. Redistributions in binary form must reproduce the above copyright 15e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * notice, this list of conditions and the following disclaimer in 16e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * the documentation and/or other materials provided with the 17e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * distribution. 18e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * 19e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * 3. All advertising materials mentioning features or use of this 20e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * software must display the following acknowledgment: 21e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * "This product includes software developed by the OpenSSL Project 22e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 23e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * 24e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 25e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * endorse or promote products derived from this software without 26e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * prior written permission. For written permission, please contact 27e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * licensing@OpenSSL.org. 28e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * 29e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * 5. Products derived from this software may not be called "OpenSSL" 30e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * nor may "OpenSSL" appear in their names without prior written 31e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * permission of the OpenSSL Project. 32e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * 33e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * 6. Redistributions of any form whatsoever must retain the following 34e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * acknowledgment: 35e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * "This product includes software developed by the OpenSSL Project 36e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 37e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * 38e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 39e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 40e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 41e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 42e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 43e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 44e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 45e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 46e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 47e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 48e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 49e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * OF THE POSSIBILITY OF SUCH DAMAGE. 50e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * ==================================================================== 51e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * 52e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * This product includes cryptographic software written by Eric Young 53e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * (eay@cryptsoft.com). This product includes software written by Tim 54e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * Hudson (tjh@cryptsoft.com). 55e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu * 56e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu */ 57e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu 58e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu#include <stdio.h> 59e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu#include "cryptlib.h" 60221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#include <openssl/evp.h> 61221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#include "asn1_locl.h" 62221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 63221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#define HMAC_TEST_PRIVATE_KEY_FORMAT 64e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu 65221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom/* HMAC "ASN1" method. This is just here to indicate the 66221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * maximum HMAC output length and to free up an HMAC 67221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * key. 68221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom */ 69e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu 70221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromstatic int hmac_size(const EVP_PKEY *pkey) 71221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 72221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return EVP_MAX_MD_SIZE; 73221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 74e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu 75221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromstatic void hmac_key_free(EVP_PKEY *pkey) 76e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu { 77221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ASN1_OCTET_STRING *os = (ASN1_OCTET_STRING *)pkey->pkey.ptr; 78221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (os) 79e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu { 80221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (os->data) 81221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom OPENSSL_cleanse(os->data, os->length); 82221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ASN1_OCTET_STRING_free(os); 83e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu } 84221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 85221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 86221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 87221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromstatic int hmac_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2) 88221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 89221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom switch (op) 90e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu { 91221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom case ASN1_PKEY_CTRL_DEFAULT_MD_NID: 92221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom *(int *)arg2 = NID_sha1; 93221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 1; 94221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 95221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom default: 96221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return -2; 97e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu } 98221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 99221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 100221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#ifdef HMAC_TEST_PRIVATE_KEY_FORMAT 101221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom/* A bogus private key format for test purposes. This is simply the 102221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * HMAC key with "HMAC PRIVATE KEY" in the headers. When enabled the 103221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom * genpkey utility can be used to "generate" HMAC keys. 104221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom */ 105221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 106221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromstatic int old_hmac_decode(EVP_PKEY *pkey, 107221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom const unsigned char **pder, int derlen) 108221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 109221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ASN1_OCTET_STRING *os; 110221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom os = ASN1_OCTET_STRING_new(); 111221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (!os || !ASN1_OCTET_STRING_set(os, *pder, derlen)) 112221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return 0; 113221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVP_PKEY_assign(pkey, EVP_PKEY_HMAC, os); 114e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu return 1; 115e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu } 116e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu 117221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromstatic int old_hmac_encode(const EVP_PKEY *pkey, unsigned char **pder) 118e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu { 119221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom int inc; 120221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom ASN1_OCTET_STRING *os = (ASN1_OCTET_STRING *)pkey->pkey.ptr; 121221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (pder) 122221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 123221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (!*pder) 124221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 125221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom *pder = OPENSSL_malloc(os->length); 126221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom inc = 0; 127221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 128221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom else inc = 1; 129221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 130221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom memcpy(*pder, os->data, os->length); 131221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 132221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom if (inc) 133221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom *pder += os->length; 134221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom } 135221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 136221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom return os->length; 137e45f106cb6b47af1f21efe76e933bdea2f5dd1caNagendra Modadugu } 138221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 139221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#endif 140221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 141221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstromconst EVP_PKEY_ASN1_METHOD hmac_asn1_meth = 142221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom { 143221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVP_PKEY_HMAC, 144221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom EVP_PKEY_HMAC, 145221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 0, 146221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 147221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom "HMAC", 148221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom "OpenSSL HMAC method", 149221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 150221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 0,0,0,0, 151221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 152221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 0,0,0, 153221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 154221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom hmac_size, 155221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 0, 156392aa7cc7d2b122614c5393c3e357da07fd07af3Brian Carlstrom 0,0,0,0,0,0,0, 157221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 158221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom hmac_key_free, 159221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom hmac_pkey_ctrl, 160221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#ifdef HMAC_TEST_PRIVATE_KEY_FORMAT 161221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom old_hmac_decode, 162221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom old_hmac_encode 163221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#else 164221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 0,0 165221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom#endif 166221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom }; 167221304ee937bc0910948a8be1320cb8cc4eb6d36Brian Carlstrom 168