include/openssl/rand.h

   1 /*
   2  * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #ifndef HEADER_RAND_H
  11 # define HEADER_RAND_H
  12
  13 # include <stdlib.h>
  14 # include <openssl/ossl_typ.h>
  15 # include <openssl/e_os2.h>
  16 # include <openssl/randerr.h>
  17
  18 #ifdef  __cplusplus
  19 extern "C" {
  20 #endif
  21
  22 /* Already defined in ossl_typ.h */
  23 /* typedef struct rand_meth_st RAND_METHOD; */
  24
  25 struct rand_meth_st {
  26     int (*seed) (const void *buf, int num);
  27     int (*bytes) (unsigned char *buf, int num);
  28     void (*cleanup) (void);
  29     int (*add) (const void *buf, int num, double entropy);
  30     int (*pseudorand) (unsigned char *buf, int num);
  31     int (*status) (void);
  32 };
  33
  34 # ifdef BN_DEBUG
  35 extern int rand_predictable;
  36 # endif
  37
  38 int RAND_set_rand_method(const RAND_METHOD *meth);
  39 const RAND_METHOD *RAND_get_rand_method(void);
  40 # ifndef OPENSSL_NO_ENGINE
  41 int RAND_set_rand_engine(ENGINE *engine);
  42 # endif
  43 RAND_METHOD *RAND_OpenSSL(void);
  44 #if OPENSSL_API_COMPAT < 0x10100000L
  45 # define RAND_cleanup() while(0) continue
  46 #endif
  47 int RAND_bytes(unsigned char *buf, int num);
  48 DEPRECATEDIN_1_1_0(int RAND_pseudo_bytes(unsigned char *buf, int num))
  49 void RAND_seed(const void *buf, int num);
  50 #if defined(__ANDROID__) && defined(__NDK_FPABI__)
  51 __NDK_FPABI__   /* __attribute__((pcs("aapcs"))) on ARM */
  52 #endif
  53 void RAND_add(const void *buf, int num, double entropy);
  54 int RAND_load_file(const char *file, long max_bytes);
  55 int RAND_write_file(const char *file);
  56 const char *RAND_file_name(char *file, size_t num);
  57 int RAND_status(void);
  58 # ifndef OPENSSL_NO_EGD
  59 int RAND_query_egd_bytes(const char *path, unsigned char *buf, int bytes);
  60 int RAND_egd(const char *path);
  61 int RAND_egd_bytes(const char *path, int bytes);
  62 # endif
  63 int RAND_poll(void);
  64
  65 #if defined(_WIN32) && (defined(BASETYPES) || defined(_WINDEF_H))
  66 /* application has to include <windows.h> in order to use these */
  67 DEPRECATEDIN_1_1_0(void RAND_screen(void))
  68 DEPRECATEDIN_1_1_0(int RAND_event(UINT, WPARAM, LPARAM))
  69 #endif
  70
  71 int ERR_load_RAND_strings(void);
  72
  73 # ifdef  __cplusplus
  74 }
  75 # endif
  76 #endif