96 lines
2 KiB
C
96 lines
2 KiB
C
/*
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* copyright (c) 2010 - 2012 Espressif System
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*
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* esf Link List Descriptor
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*/
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#ifndef _SHA256_H_
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#define _SHA256_H_
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#include "c_types.h"
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#include "rom/ets_sys.h"
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#include "rom/sha.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define ESP_SHA256_C
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#define SHA256 SHA2_256
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#define SHA224 4
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/**
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* \brief SHA-256 context structure
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*/
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typedef struct{
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SHA_CTX context;
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int context_type;
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}sha256_context;
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typedef sha256_context SHA256_CTX;
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/**
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* \brief Initialize SHA-256 context
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*
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* \param ctx SHA-256 context to be initialized
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*/
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void sha256_init( SHA256_CTX *ctx );
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/**
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* \brief Clear SHA-256 context
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*
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* \param ctx SHA-256 context to be cleared
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*/
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void sha256_free( SHA256_CTX *ctx );
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void sha256_process(SHA256_CTX *ctx, const unsigned char data[64]);
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/**
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* \brief Clone (the state of) a SHA-256 context
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*
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* \param dst The destination context
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* \param src The context to be cloned
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*/
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void sha256_clone( SHA256_CTX *dst, const SHA256_CTX *src );
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/**
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* \brief SHA-256 context setup
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*
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* \param ctx context to be initialized
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* \param is224 0 = use SHA256, 1 = use SHA224
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*/
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void sha256_starts( SHA256_CTX *ctx, int is224 );
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/**
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* \brief SHA-256 process buffer
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*
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* \param ctx SHA-256 context
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* \param input buffer holding the data
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* \param ilen length of the input data
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*/
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void sha256_update( SHA256_CTX *ctx, const unsigned char *input, size_t ilen );
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/**
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* \brief SHA-256 final digest
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*
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* \param ctx SHA-256 context
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* \param output SHA-224/256 checksum result
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*/
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void sha256_finish( SHA256_CTX *ctx, unsigned char output[32] );
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/**
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* \brief Output = SHA-256( input buffer )
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*
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* \param input buffer holding the data
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* \param ilen length of the input data
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* \param output SHA-224/256 checksum result
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* \param is224 0 = use SHA256, 1 = use SHA224
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*/
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void sha256_output( const unsigned char *input, size_t ilen, unsigned char output[32], int is224 );
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#ifdef __cplusplus
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}
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#endif
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#endif /* sha256.h */
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