added polarssl-0.14.0

polarssl-0.14.0/include/polarssl/sha2.h

@@ -0,0 +1,155 @@
+/**
+ * \file sha2.h
+ *
+ *  Copyright (C) 2006-2010, Brainspark B.V.
+ *
+ *  This file is part of PolarSSL (http://www.polarssl.org)
+ *  Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
+ *
+ *  All rights reserved.
+ *
+ *  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_SHA2_H
+#define POLARSSL_SHA2_H
+
+/**
+ * \brief          SHA-256 context structure
+ */
+typedef struct
+{
+    unsigned long total[2];     /*!< number of bytes processed  */
+    unsigned long 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 */
+}
+sha2_context;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \brief          SHA-256 context setup
+ *
+ * \param ctx      context to be initialized
+ * \param is224    0 = use SHA256, 1 = use SHA224
+ */
+void sha2_starts( sha2_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 sha2_update( sha2_context *ctx, const unsigned char *input, int ilen );
+
+/**
+ * \brief          SHA-256 final digest
+ *
+ * \param ctx      SHA-256 context
+ * \param output   SHA-224/256 checksum result
+ */
+void sha2_finish( sha2_context *ctx, unsigned char output[32] );
+
+/**
+ * \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 sha2( const unsigned char *input, int 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, 1 if fopen failed,
+ *                 or 2 if fread failed
+ */
+int sha2_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 sha2_hmac_starts( sha2_context *ctx, const unsigned char *key, int 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 sha2_hmac_update( sha2_context *ctx, const unsigned char *input, int ilen );
+
+/**
+ * \brief          SHA-256 HMAC final digest
+ *
+ * \param ctx      HMAC context
+ * \param output   SHA-224/256 HMAC checksum result
+ */
+void sha2_hmac_finish( sha2_context *ctx, unsigned char output[32] );
+
+/**
+ * \brief          SHA-256 HMAC context reset
+ *
+ * \param ctx      HMAC context to be reset
+ */
+void sha2_hmac_reset( sha2_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 sha2_hmac( const unsigned char *key, int keylen,
+                const unsigned char *input, int ilen,
+                unsigned char output[32], int is224 );
+
+/**
+ * \brief          Checkup routine
+ *
+ * \return         0 if successful, or 1 if the test failed
+ */
+int sha2_self_test( int verbose );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* sha2.h */