src/Resource/sha2.h

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#ifndef _SHA2_H
#define _SHA2_H

#ifdef __cplusplus
extern "C" {
#endif

typedef struct
{
    unsigned long total[2];     
    unsigned long state[8];     
    unsigned char buffer[64];   
    unsigned char ipad[64];     
    unsigned char opad[64];     
    int is224;                  
}
sha2_context;

void sha2_starts( sha2_context *ctx, int is224 );

void sha2_update( sha2_context *ctx, unsigned char *input, int ilen );

void sha2_finish( sha2_context *ctx, unsigned char *output );

void sha2( unsigned char *input,  int ilen,
           unsigned char *output, int is224 );

int sha2_file( char *path, unsigned char *output, int is224 );

void sha2_hmac_starts( sha2_context *ctx,  int is224,
                       unsigned char *key, int keylen );

void sha2_hmac_update( sha2_context *ctx,
                       unsigned char *input, int ilen );

void sha2_hmac_finish( sha2_context *ctx, unsigned char *output );

void sha2_hmac( unsigned char *key,  int keylen,
                unsigned char *input,  int ilen,
                unsigned char *output, int is224 );

int sha2_self_test( int verbose );

#ifdef __cplusplus
}
#endif

#endif /* sha2.h */

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