hmac.h

//@AUTOHEADER@BEGIN@
/***********************************************************************\
|                    Drift Standard Libraries v1.01                     |
|            Copyright 2010-2023 Drift Solutions / Indy Sams            |
| Docs and more information available at https://www.driftsolutions.dev |
|          This file released under the 3-clause BSD license,           |
|            see included DSL.LICENSE.TXT file for details.             |
\***********************************************************************/
//@AUTOHEADER@END@
 
#ifndef _DSL_HMAC_H_
#define _DSL_HMAC_H_
 
#include <drift/rwops.h>
 
struct HMAC_PROVIDER;
struct HMAC_NATIVE;
struct HASH_HMAC_CTX {
    size_t hashSize;
 
#ifndef DOXYGEN_SKIP
    const HMAC_PROVIDER * provider;
    void *pptr1;
    const HMAC_NATIVE * impl;
#endif
};
 
DSL_API HASH_HMAC_CTX * DSL_CC hmac_init(const char * name, const uint8 *key, size_t length);
DSL_API void DSL_CC hmac_update(HASH_HMAC_CTX *ctx, const uint8 *input, size_t length); 
DSL_API bool DSL_CC hmac_finish(HASH_HMAC_CTX *ctx, uint8 * out, size_t outlen); 
 
DSL_API bool DSL_CC hmacdata(const char * name, const uint8 *key, size_t keylen, const uint8 *data, size_t datalen, char * out, size_t outlen); 
DSL_API bool DSL_CC hmacfile(const char * name, const uint8 *key, size_t keylen, const char * fn, char * out, size_t outlen); 
DSL_API bool DSL_CC hmacfile_fp(const char * name, const uint8 *key, size_t keylen, FILE * fp, char * out, size_t outlen); 
DSL_API bool DSL_CC hmacfile_rw(const char * name, const uint8 *key, size_t keylen, DSL_FILE * fp, char * out, size_t outlen); 
 
#ifndef DOXYGEN_SKIP
 
struct HMAC_PROVIDER {
    const char * const name;
    HASH_HMAC_CTX * (*hmac_init)(const char * name, const uint8 *key, size_t length);
    void(*hmac_update)(HASH_HMAC_CTX *ctx, const uint8 *input, size_t length);
    bool(*hmac_finish)(HASH_HMAC_CTX *ctx, uint8 * out, size_t outlen);
};
 
struct HMAC_NATIVE {
    int hashSize;
 
    bool(*init)(HASH_HMAC_CTX * ctx, const uint8 *key, size_t length);
    void(*update)(HASH_HMAC_CTX * ctx, const uint8 *input, size_t length);
    bool(*finish)(HASH_HMAC_CTX * ctx, uint8 * out);
};
 
DSL_API void DSL_CC dsl_add_hmac_provider(const HMAC_PROVIDER * p);
DSL_API void DSL_CC dsl_remove_hmac_provider(const HMAC_PROVIDER * p);
DSL_API void DSL_CC dsl_get_hmac_providers(vector<const HMAC_PROVIDER *>& p);
 
DSL_API void DSL_CC dsl_add_native_hmac(const char * name, const HMAC_NATIVE * p); /* This should be called directly after dsl_init() and before any other DSL functions. The pointer must remain valid until after dsl_cleanup() is called. */
extern const HMAC_PROVIDER dsl_native_hmacers;
#endif // DOXYGEN_SKIP
 
#endif // _DSL_HMAC_H_