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nettle-types.h

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  • Forked from Nettle / nettle
    2326 commits behind the upstream repository.
    nettle-types.h 2.73 KiB
    /* nettle-types.h */
    
    /* nettle, low-level cryptographics library
     *
     * Copyright (C) 2005 Niels Möller
     *  
     * The nettle library is free software; you can redistribute it and/or modify
     * it under the terms of the GNU Lesser General Public License as published by
     * the Free Software Foundation; either version 2.1 of the License, or (at your
     * option) any later version.
     * 
     * The nettle library is distributed in the hope that it will be useful, but
     * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
     * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
     * License for more details.
     * 
     * You should have received a copy of the GNU Lesser General Public License
     * along with the nettle library; see the file COPYING.LIB.  If not, write to
     * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
     * MA 02111-1307, USA.
     */
    
    #ifndef NETTLE_TYPES_H
    #define NETTLE_TYPES_H
    
    #include "nettle-stdint.h"
    
    #ifdef __cplusplus
    extern "C" {
    #endif
    
    /* Randomness. Used by key generation and dsa signature creation. */
    typedef void nettle_random_func(void *ctx,
    				unsigned length, uint8_t *dst);
    
    /* Progress report function, mainly for key generation. */
    typedef void nettle_progress_func(void *ctx, int c);
    
    /* Realloc function, used by struct nettle_buffer. */
    typedef void *nettle_realloc_func(void *ctx, void *p, unsigned length);
    
    /* Ciphers */
    typedef void nettle_set_key_func(void *ctx,
    				 unsigned length,
    				 const uint8_t *key);
    
    /* Uses a void * for cipher contexts.
    
       For block ciphers it would make sense with a const void * for the
       context, but we use the same typedef for stream ciphers where the
       internal state changes during the encryption. */
    
    typedef void nettle_crypt_func(void *ctx,
    			       unsigned length, uint8_t *dst,
    			       const uint8_t *src);
    
    /* Hash algorithms */
    typedef void nettle_hash_init_func(void *ctx);
    typedef void nettle_hash_update_func(void *ctx,
    				     unsigned length,
    				     const uint8_t *src);
    typedef void nettle_hash_digest_func(void *ctx,
    				     unsigned length, uint8_t *dst);
    
    /* ASCII armor codecs. NOTE: Experimental and subject to change. */
    
    typedef unsigned nettle_armor_length_func(unsigned length);
    typedef void nettle_armor_init_func(void *ctx);
    
    typedef unsigned nettle_armor_encode_update_func(void *ctx,
    						 uint8_t *dst,
    						 unsigned src_length,
    						 const uint8_t *src);
    
    typedef unsigned nettle_armor_encode_final_func(void *ctx, uint8_t *dst);
    
    typedef int nettle_armor_decode_update_func(void *ctx,
    					    unsigned *dst_length,
    					    uint8_t *dst,
    					    unsigned src_length,
    					    const uint8_t *src);
    
    typedef int nettle_armor_decode_final_func(void *ctx);
    
    #ifdef __cplusplus
    }
    #endif
    
    #endif /* NETTLE_TYPES_H */