Diff: include/polarssl/sha256.h

Revision:

0:137634ff4186

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/include/polarssl/sha256.h	Thu Jun 11 03:27:03 2015 +0000
@@ -0,0 +1,206 @@
+/**
+ * \file sha256.h
+ *
+ * \brief SHA-224 and SHA-256 cryptographic hash function
+ *
+ *  Copyright (C) 2006-2014, ARM Limited, All Rights Reserved
+ *
+ *  This file is part of mbed TLS (https://tls.mbed.org)
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+#ifndef POLARSSL_SHA256_H
+#define POLARSSL_SHA256_H
+
+#if !defined(POLARSSL_CONFIG_FILE)
+#include "config.h"
+#else
+#include POLARSSL_CONFIG_FILE
+#endif
+
+#include <stddef.h>
+
+#if defined(_MSC_VER) && !defined(EFIX64) && !defined(EFI32)
+#include <basetsd.h>
+typedef UINT32 uint32_t;
+#else
+#include <inttypes.h>
+#endif
+
+#define POLARSSL_ERR_SHA256_FILE_IO_ERROR              -0x0078  /**< Read/write error in file. */
+
+#if !defined(POLARSSL_SHA256_ALT)
+// Regular implementation
+//
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \brief          SHA-256 context structure
+ */
+typedef struct
+{
+    uint32_t total[2];          /*!< number of bytes processed  */
+    uint32_t state[8];          /*!< intermediate digest state  */
+    unsigned char buffer[64];   /*!< data block being processed */
+
+    unsigned char ipad[64];     /*!< HMAC: inner padding        */
+    unsigned char opad[64];     /*!< HMAC: outer padding        */
+    int is224;                  /*!< 0 => SHA-256, else SHA-224 */
+}
+sha256_context;
+
+/**
+ * \brief          Initialize SHA-256 context
+ *
+ * \param ctx      SHA-256 context to be initialized
+ */
+void sha256_init( sha256_context *ctx );
+
+/**
+ * \brief          Clear SHA-256 context
+ *
+ * \param ctx      SHA-256 context to be cleared
+ */
+void sha256_free( sha256_context *ctx );
+
+/**
+ * \brief          SHA-256 context setup
+ *
+ * \param ctx      context to be initialized
+ * \param is224    0 = use SHA256, 1 = use SHA224
+ */
+void sha256_starts( sha256_context *ctx, int is224 );
+
+/**
+ * \brief          SHA-256 process buffer
+ *
+ * \param ctx      SHA-256 context
+ * \param input    buffer holding the  data
+ * \param ilen     length of the input data
+ */
+void sha256_update( sha256_context *ctx, const unsigned char *input,
+                    size_t ilen );
+
+/**
+ * \brief          SHA-256 final digest
+ *
+ * \param ctx      SHA-256 context
+ * \param output   SHA-224/256 checksum result
+ */
+void sha256_finish( sha256_context *ctx, unsigned char output[32] );
+
+/* Internal use */
+void sha256_process( sha256_context *ctx, const unsigned char data[64] );
+
+#ifdef __cplusplus
+}
+#endif
+
+#else  /* POLARSSL_SHA256_ALT */
+#include "sha256_alt.h"
+#endif /* POLARSSL_SHA256_ALT */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \brief          Output = SHA-256( input buffer )
+ *
+ * \param input    buffer holding the  data
+ * \param ilen     length of the input data
+ * \param output   SHA-224/256 checksum result
+ * \param is224    0 = use SHA256, 1 = use SHA224
+ */
+void sha256( const unsigned char *input, size_t ilen,
+           unsigned char output[32], int is224 );
+
+/**
+ * \brief          Output = SHA-256( file contents )
+ *
+ * \param path     input file name
+ * \param output   SHA-224/256 checksum result
+ * \param is224    0 = use SHA256, 1 = use SHA224
+ *
+ * \return         0 if successful, or POLARSSL_ERR_SHA256_FILE_IO_ERROR
+ */
+int sha256_file( const char *path, unsigned char output[32], int is224 );
+
+/**
+ * \brief          SHA-256 HMAC context setup
+ *
+ * \param ctx      HMAC context to be initialized
+ * \param key      HMAC secret key
+ * \param keylen   length of the HMAC key
+ * \param is224    0 = use SHA256, 1 = use SHA224
+ */
+void sha256_hmac_starts( sha256_context *ctx, const unsigned char *key,
+                         size_t keylen, int is224 );
+
+/**
+ * \brief          SHA-256 HMAC process buffer
+ *
+ * \param ctx      HMAC context
+ * \param input    buffer holding the  data
+ * \param ilen     length of the input data
+ */
+void sha256_hmac_update( sha256_context *ctx, const unsigned char *input,
+                         size_t ilen );
+
+/**
+ * \brief          SHA-256 HMAC final digest
+ *
+ * \param ctx      HMAC context
+ * \param output   SHA-224/256 HMAC checksum result
+ */
+void sha256_hmac_finish( sha256_context *ctx, unsigned char output[32] );
+
+/**
+ * \brief          SHA-256 HMAC context reset
+ *
+ * \param ctx      HMAC context to be reset
+ */
+void sha256_hmac_reset( sha256_context *ctx );
+
+/**
+ * \brief          Output = HMAC-SHA-256( hmac key, input buffer )
+ *
+ * \param key      HMAC secret key
+ * \param keylen   length of the HMAC key
+ * \param input    buffer holding the  data
+ * \param ilen     length of the input data
+ * \param output   HMAC-SHA-224/256 result
+ * \param is224    0 = use SHA256, 1 = use SHA224
+ */
+void sha256_hmac( const unsigned char *key, size_t keylen,
+                  const unsigned char *input, size_t ilen,
+                  unsigned char output[32], int is224 );
+
+/**
+ * \brief          Checkup routine
+ *
+ * \return         0 if successful, or 1 if the test failed
+ */
+int sha256_self_test( int verbose );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* sha256.h */
+