sha256.h

00001 /* sha256.h
00002  *
00003  * Copyright (C) 2006-2016 wolfSSL Inc.
00004  *
00005  * This file is part of wolfSSL.
00006  *
00007  * wolfSSL 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  * wolfSSL 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
00020  */
00021 
00022 
00023 /* code submitted by raphael.huck@efixo.com */
00024 
00025 #ifndef WOLF_CRYPT_SHA256_H
00026 #define WOLF_CRYPT_SHA256_H
00027 
00028 #include <wolfssl/wolfcrypt/types.h>
00029 
00030 #ifndef NO_SHA256
00031 
00032 #ifdef HAVE_FIPS
00033     /* for fips @wc_fips */
00034     #include <cyassl/ctaocrypt/sha256.h>
00035 #endif
00036 
00037 #ifdef FREESCALE_LTC_SHA
00038     #include "fsl_ltc.h"
00039 #endif
00040 
00041 
00042 #ifdef __cplusplus
00043     extern "C" {
00044 #endif
00045 
00046 #ifndef HAVE_FIPS /* avoid redefinition of structs */
00047 
00048 #ifdef WOLFSSL_PIC32MZ_HASH
00049     #include "port/pic32/pic32mz-crypt.h"
00050 #endif
00051 #ifdef WOLFSSL_ASYNC_CRYPT
00052     #include <wolfssl/wolfcrypt/async.h>
00053 #endif
00054 
00055 /* in bytes */
00056 enum {
00057     SHA256              =  2,   /* hash type unique */
00058     SHA256_BLOCK_SIZE   = 64,
00059     SHA256_DIGEST_SIZE  = 32,
00060     SHA256_PAD_SIZE     = 56
00061 };
00062 
00063 #ifndef WOLFSSL_TI_HASH
00064 
00065 /* Sha256 digest */
00066 typedef struct Sha256 {
00067 #ifdef FREESCALE_LTC_SHA
00068     ltc_hash_ctx_t ctx;
00069 #else
00070     /* alignment on digest and buffer speeds up ARMv8 crypto operations */
00071     ALIGN16 word32  digest[SHA256_DIGEST_SIZE / sizeof(word32)];
00072     ALIGN16 word32  buffer[SHA256_BLOCK_SIZE  / sizeof(word32)];
00073     word32  buffLen;   /* in bytes          */
00074     word32  loLen;     /* length in bytes   */
00075     word32  hiLen;     /* length in bytes   */
00076     void*   heap;
00077 #ifdef WOLFSSL_PIC32MZ_HASH
00078     pic32mz_desc desc; /* Crypt Engine descriptor */
00079 #endif
00080 #ifdef WOLFSSL_ASYNC_CRYPT
00081     WC_ASYNC_DEV asyncDev;
00082 #endif /* WOLFSSL_ASYNC_CRYPT */
00083 #endif /* FREESCALE_LTC_SHA */
00084 } Sha256;
00085 
00086 #else /* WOLFSSL_TI_HASH */
00087     #include "wolfssl/wolfcrypt/port/ti/ti-hash.h"
00088 #endif
00089 
00090 #endif /* HAVE_FIPS */
00091 
00092 WOLFSSL_API int wc_InitSha256(Sha256*);
00093 WOLFSSL_API int wc_InitSha256_ex(Sha256*, void*, int);
00094 WOLFSSL_API int wc_Sha256Update(Sha256*, const byte*, word32);
00095 WOLFSSL_API int wc_Sha256Final(Sha256*, byte*);
00096 WOLFSSL_API void wc_Sha256Free(Sha256*);
00097 
00098 WOLFSSL_API int wc_Sha256GetHash(Sha256*, byte*);
00099 WOLFSSL_API int wc_Sha256Copy(Sha256* src, Sha256* dst);
00100 
00101 #ifdef WOLFSSL_SHA224
00102 
00103 #ifndef HAVE_FIPS /* avoid redefinition of structs */
00104 /* in bytes */
00105 enum {
00106     SHA224              =   8,   /* hash type unique */
00107     SHA224_BLOCK_SIZE   =   SHA256_BLOCK_SIZE,
00108     SHA224_DIGEST_SIZE  =   28,
00109     SHA224_PAD_SIZE     =   SHA256_PAD_SIZE
00110 };
00111 
00112 typedef Sha256 Sha224;
00113 #endif /* HAVE_FIPS */
00114 
00115 WOLFSSL_API int wc_InitSha224(Sha224*);
00116 WOLFSSL_API int wc_InitSha224_ex(Sha224*, void*, int);
00117 WOLFSSL_API int wc_Sha224Update(Sha224*, const byte*, word32);
00118 WOLFSSL_API int wc_Sha224Final(Sha224*, byte*);
00119 WOLFSSL_API void wc_Sha224Free(Sha224*);
00120 
00121 WOLFSSL_API int wc_Sha224GetHash(Sha224*, byte*);
00122 WOLFSSL_API int wc_Sha224Copy(Sha224* src, Sha224* dst);
00123 
00124 #endif /* WOLFSSL_SHA224 */
00125 
00126 #ifdef __cplusplus
00127     } /* extern "C" */
00128 #endif
00129 
00130 #endif /* NO_SHA256 */
00131 #endif /* WOLF_CRYPT_SHA256_H */
00132 
00133