hmac.h

00001 /* hmac.h
00002  *
00003  * Copyright (C) 2006-2012 Sawtooth Consulting Ltd.
00004  *
00005  * This file is part of CyaSSL.
00006  *
00007  * CyaSSL is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 2 of the License, or
00010  * (at your option) any later version.
00011  *
00012  * CyaSSL is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU General Public License
00018  * along with this program; if not, write to the Free Software
00019  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
00020  */
00021 
00022 
00023 #ifndef NO_HMAC
00024 
00025 #ifndef CTAO_CRYPT_HMAC_H
00026 #define CTAO_CRYPT_HMAC_H
00027 
00028 #define NO_SHA256
00029 #define NO_SHA
00030 
00031 #ifndef NO_MD5
00032     #include "md5.h"
00033 #endif
00034 
00035 #ifndef NO_SHA
00036 #include <cyassl/ctaocrypt/sha.h>
00037 #endif
00038 
00039 
00040 #ifndef NO_SHA256
00041     #include <cyassl/ctaocrypt/sha256.h>
00042 #endif
00043 
00044 #ifdef CYASSL_SHA384
00045     #include <cyassl/ctaocrypt/sha512.h>
00046 #endif
00047 
00048 #ifdef HAVE_CAVIUM
00049     #include <cyassl/ctaocrypt/logging.h>
00050     #include "cavium_common.h"
00051 #endif
00052 
00053 #ifdef __cplusplus
00054     extern "C" {
00055 #endif
00056 
00057 
00058 #define CYASSL_HMAC_CAVIUM_MAGIC 0xBEEF0005
00059 
00060 enum {
00061     IPAD    = 0x36,
00062     OPAD    = 0x5C,
00063 #ifdef NO_MD5
00064     MD5     = 0,
00065 #endif
00066 #if defined(CYASSL_SHA384)
00067     INNER_HASH_SIZE = SHA384_DIGEST_SIZE,
00068     HMAC_BLOCK_SIZE = SHA384_BLOCK_SIZE
00069 #elif !defined(NO_SHA256)
00070     INNER_HASH_SIZE = SHA256_DIGEST_SIZE,
00071     HMAC_BLOCK_SIZE = SHA256_BLOCK_SIZE,
00072     SHA384          = 5
00073 #elif !defined(NO_SHA)
00074     INNER_HASH_SIZE = SHA_DIGEST_SIZE,
00075     HMAC_BLOCK_SIZE = SHA_BLOCK_SIZE,
00076     SHA256          = 2,                     /* hash type unique */
00077     SHA384          = 5
00078 #else
00079     INNER_HASH_SIZE = MD5_DIGEST_SIZE,
00080     HMAC_BLOCK_SIZE = MD5_BLOCK_SIZE,
00081     SHA                = 1,
00082     SHA256          = 2,                     /* hash type unique */
00083     SHA384          = 5
00084 #endif
00085 };
00086 
00087 
00088 /* hash union */
00089 typedef union {
00090     #ifndef NO_MD5
00091         Md5 md5;
00092     #endif
00093     #ifndef NO_SHA
00094     Sha sha;
00095     #endif
00096     #ifndef NO_SHA256
00097         Sha256 sha256;
00098     #endif
00099     #ifdef CYASSL_SHA384
00100         Sha384 sha384;
00101     #endif
00102 } Hash;
00103 
00104 /* Hmac digest */
00105 typedef struct Hmac {
00106     Hash    hash;
00107     word32  ipad[HMAC_BLOCK_SIZE  / sizeof(word32)];  /* same block size all*/
00108     word32  opad[HMAC_BLOCK_SIZE  / sizeof(word32)];
00109     word32  innerHash[INNER_HASH_SIZE / sizeof(word32)]; /* max size */
00110     byte    macType;                                     /* md5 sha or sha256 */
00111     byte    innerHashKeyed;                              /* keyed flag */
00112 #ifdef HAVE_CAVIUM
00113     word16   keyLen;          /* hmac key length */
00114     word16   dataLen;
00115     HashType type;            /* hmac key type */
00116     int      devId;           /* nitrox device id */
00117     word32   magic;           /* using cavium magic */
00118     word64   contextHandle;   /* nitrox context memory handle */
00119     byte*    data;            /* buffered input data for one call */
00120 #endif
00121 } Hmac;
00122 
00123 
00124 /* does init */
00125 CYASSL_API void HmacSetKey(Hmac*, int type, const byte* key, word32 keySz);
00126 CYASSL_API void HmacUpdate(Hmac*, const byte*, word32);
00127 CYASSL_API void HmacFinal(Hmac*, byte*);
00128 
00129 #ifdef HAVE_CAVIUM
00130     CYASSL_API int  HmacInitCavium(Hmac*, int);
00131     CYASSL_API void HmacFreeCavium(Hmac*);
00132 #endif
00133 
00134 
00135 #ifdef __cplusplus
00136     } /* extern "C" */
00137 #endif
00138 
00139 #endif /* CTAO_CRYPT_HMAC_H */
00140 
00141 #endif /* NO_HMAC */