1 /* SPDX-License-Identifier: LGPL-2.1 */ 2 /** 3 * \file sha1.h 4 * based from http://xyssl.org/code/source/sha1/ 5 * FIPS-180-1 compliant SHA-1 implementation 6 * 7 * Copyright (C) 2003-2006 Christophe Devine 8 */ 9 /* 10 * The SHA-1 standard was published by NIST in 1993. 11 * 12 * http://www.itl.nist.gov/fipspubs/fip180-1.htm 13 */ 14 #ifndef _SHA1_H 15 #define _SHA1_H 16 17 #include <linux/kconfig.h> 18 #include <linux/types.h> 19 20 #if CONFIG_IS_ENABLED(MBEDTLS_LIB_CRYPTO) 21 #include "mbedtls_options.h" 22 #include <mbedtls/sha1.h> 23 #endif 24 25 #ifdef __cplusplus 26 extern "C" { 27 #endif 28 29 #define SHA1_SUM_POS -0x20 30 #define SHA1_SUM_LEN 20 31 #define SHA1_DER_LEN 15 32 33 #define SHA1_DEF_CHUNK_SZ 0x10000 34 35 #define K_IPAD_VAL 0x36 36 #define K_OPAD_VAL 0x5C 37 #define K_PAD_LEN 64 38 39 extern const uint8_t sha1_der_prefix[]; 40 41 #if CONFIG_IS_ENABLED(MBEDTLS_LIB_CRYPTO) 42 typedef mbedtls_sha1_context sha1_context; 43 #else 44 /** 45 * \brief SHA-1 context structure 46 */ 47 typedef struct 48 { 49 unsigned long total[2]; /*!< number of bytes processed */ 50 uint32_t state[5]; /*!< intermediate digest state */ 51 unsigned char buffer[64]; /*!< data block being processed */ 52 } 53 sha1_context; 54 #endif 55 56 /** 57 * \brief SHA-1 context setup 58 * 59 * \param ctx SHA-1 context to be initialized 60 */ 61 void sha1_starts(sha1_context *ctx); 62 63 /** 64 * \brief SHA-1 process buffer 65 * 66 * \param ctx SHA-1 context 67 * \param input buffer holding the data 68 * \param ilen length of the input data 69 */ 70 void sha1_update(sha1_context *ctx, const unsigned char *input, 71 unsigned int ilen); 72 73 /** 74 * \brief SHA-1 final digest 75 * 76 * \param ctx SHA-1 context 77 * \param output SHA-1 checksum result 78 */ 79 void sha1_finish( sha1_context *ctx, unsigned char output[20] ); 80 81 /** 82 * \brief Output = SHA-1( input buffer ), with watchdog triggering 83 * 84 * \param input buffer holding the data 85 * \param ilen length of the input data 86 * \param output SHA-1 checksum result 87 * \param chunk_sz watchdog triggering period (in bytes of input processed) 88 */ 89 void sha1_csum_wd(const unsigned char *input, unsigned int ilen, 90 unsigned char *output, unsigned int chunk_sz); 91 92 /** 93 * \brief Output = HMAC-SHA-1( input buffer, hmac key ) 94 * 95 * \param key HMAC secret key 96 * \param keylen length of the HMAC key 97 * \param input buffer holding the data 98 * \param ilen length of the input data 99 * \param output HMAC-SHA-1 result 100 */ 101 void sha1_hmac(const unsigned char *key, int keylen, 102 const unsigned char *input, unsigned int ilen, 103 unsigned char *output); 104 105 /** 106 * \brief Checkup routine 107 * 108 * \return 0 if successful, or 1 if the test failed 109 */ 110 int sha1_self_test( void ); 111 112 #ifdef __cplusplus 113 } 114 #endif 115 116 #endif /* sha1.h */ 117