include/u-boot/sha1.h

   1 /**
   2  * \file sha1.h
   3  * based from http://xyssl.org/code/source/sha1/
   4  *  FIPS-180-1 compliant SHA-1 implementation
   5  *
   6  *  Copyright (C) 2003-2006  Christophe Devine
   7  *
   8  * SPDX-License-Identifier:     LGPL-2.1
   9  */
  10 /*
  11  *  The SHA-1 standard was published by NIST in 1993.
  12  *
  13  *  http://www.itl.nist.gov/fipspubs/fip180-1.htm
  14  */
  15 #ifndef _SHA1_H
  16 #define _SHA1_H
  17
  18 #ifdef __cplusplus
  19 extern "C" {
  20 #endif
  21
  22 #define SHA1_SUM_POS    -0x20
  23 #define SHA1_SUM_LEN    20
  24
  25 /**
  26  * \brief          SHA-1 context structure
  27  */
  28 typedef struct
  29 {
  30     unsigned long total[2];     /*!< number of bytes processed  */
  31     unsigned long state[5];     /*!< intermediate digest state  */
  32     unsigned char buffer[64];   /*!< data block being processed */
  33 }
  34 sha1_context;
  35
  36 /**
  37  * \brief          SHA-1 context setup
  38  *
  39  * \param ctx      SHA-1 context to be initialized
  40  */
  41 void sha1_starts( sha1_context *ctx );
  42
  43 /**
  44  * \brief          SHA-1 process buffer
  45  *
  46  * \param ctx      SHA-1 context
  47  * \param input    buffer holding the  data
  48  * \param ilen     length of the input data
  49  */
  50 void sha1_update(sha1_context *ctx, const unsigned char *input,
  51                  unsigned int ilen);
  52
  53 /**
  54  * \brief          SHA-1 final digest
  55  *
  56  * \param ctx      SHA-1 context
  57  * \param output   SHA-1 checksum result
  58  */
  59 void sha1_finish( sha1_context *ctx, unsigned char output[20] );
  60
  61 /**
  62  * \brief          Output = SHA-1( input buffer )
  63  *
  64  * \param input    buffer holding the  data
  65  * \param ilen     length of the input data
  66  * \param output   SHA-1 checksum result
  67  */
  68 void sha1_csum(const unsigned char *input, unsigned int ilen,
  69                 unsigned char *output);
  70
  71 /**
  72  * \brief          Output = SHA-1( input buffer ), with watchdog triggering
  73  *
  74  * \param input    buffer holding the  data
  75  * \param ilen     length of the input data
  76  * \param output   SHA-1 checksum result
  77  * \param chunk_sz watchdog triggering period (in bytes of input processed)
  78  */
  79 void sha1_csum_wd(const unsigned char *input, unsigned int ilen,
  80                 unsigned char *output, unsigned int chunk_sz);
  81
  82 /**
  83  * \brief          Output = HMAC-SHA-1( input buffer, hmac key )
  84  *
  85  * \param key      HMAC secret key
  86  * \param keylen   length of the HMAC key
  87  * \param input    buffer holding the  data
  88  * \param ilen     length of the input data
  89  * \param output   HMAC-SHA-1 result
  90  */
  91 void sha1_hmac(const unsigned char *key, int keylen,
  92                 const unsigned char *input, unsigned int ilen,
  93                 unsigned char *output);
  94
  95 /**
  96  * \brief          Checkup routine
  97  *
  98  * \return         0 if successful, or 1 if the test failed
  99  */
 100 int sha1_self_test( void );
 101
 102 #ifdef __cplusplus
 103 }
 104 #endif
 105
 106 #endif /* sha1.h */