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
  17 # if defined(OPENSSL_SYS_WINDOWS)
  18 #  include <windows.h>
  19 # endif
  20
  21 #ifdef  __cplusplus
  22 extern "C" {
  23 #endif
  24
  25 /* Already defined in ossl_typ.h */
  26 /* typedef struct rand_meth_st RAND_METHOD; */
  27
  28 struct rand_meth_st {
  29     int (*seed) (const void *buf, int num);
  30     int (*bytes) (unsigned char *buf, int num);
  31     void (*cleanup) (void);
  32     int (*add) (const void *buf, int num, double entropy);
  33     int (*pseudorand) (unsigned char *buf, int num);
  34     int (*status) (void);
  35 };
  36
  37 # ifdef BN_DEBUG
  38 extern int rand_predictable;
  39 # endif
  40
  41 int RAND_set_rand_method(const RAND_METHOD *meth);
  42 const RAND_METHOD *RAND_get_rand_method(void);
  43 # ifndef OPENSSL_NO_ENGINE
  44 int RAND_set_rand_engine(ENGINE *engine);
  45 # endif
  46 RAND_METHOD *RAND_OpenSSL(void);
  47 #if OPENSSL_API_COMPAT < 0x10100000L
  48 # define RAND_cleanup() while(0) continue
  49 #endif
  50 int RAND_bytes(unsigned char *buf, int num);
  51 DEPRECATEDIN_1_1_0(int RAND_pseudo_bytes(unsigned char *buf, int num))
  52 void RAND_seed(const void *buf, int num);
  53 #if defined(__ANDROID__) && defined(__NDK_FPABI__)
  54 __NDK_FPABI__   /* __attribute__((pcs("aapcs"))) on ARM */
  55 #endif
  56 void RAND_add(const void *buf, int num, double entropy);
  57 int RAND_load_file(const char *file, long max_bytes);
  58 int RAND_write_file(const char *file);
  59 const char *RAND_file_name(char *file, size_t num);
  60 int RAND_status(void);
  61 # ifndef OPENSSL_NO_EGD
  62 int RAND_query_egd_bytes(const char *path, unsigned char *buf, int bytes);
  63 int RAND_egd(const char *path);
  64 int RAND_egd_bytes(const char *path, int bytes);
  65 # endif
  66 int RAND_poll(void);
  67
  68 # if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32)
  69
  70 void RAND_screen(void);
  71 int RAND_event(UINT, WPARAM, LPARAM);
  72
  73 # endif
  74
  75 /* BEGIN ERROR CODES */
  76 /*
  77  * The following lines are auto generated by the script mkerr.pl. Any changes
  78  * made after this point may be overwritten when the script is next run.
  79  */
  80 void ERR_load_RAND_strings(void);
  81
  82 /* Error codes for the RAND functions. */
  83
  84 /* Function codes. */
  85 # define RAND_F_FIPS_RAND                                 102
  86 # define RAND_F_FIPS_RAND_SET_DT                          103
  87 # define RAND_F_FIPS_SET_PRNG_SEED                        104
  88 # define RAND_F_FIPS_SET_TEST_MODE                        105
  89 # define RAND_F_FIPS_X931_SET_DT                          106
  90 # define RAND_F_RAND_BYTES                                100
  91 # define RAND_F_RAND_GET_RAND_METHOD                      101
  92
  93 /* Reason codes. */
  94 # define RAND_R_NOT_IN_TEST_MODE                          101
  95 # define RAND_R_NO_KEY_SET                                102
  96 # define RAND_R_PRNG_ERROR                                103
  97 # define RAND_R_PRNG_KEYED                                104
  98 # define RAND_R_PRNG_NOT_SEEDED                           100
  99 # define RAND_R_PRNG_SEED_MUST_NOT_MATCH_KEY              105
 100 # define RAND_R_PRNG_STUCK                                106
 101
 102 #ifdef  __cplusplus
 103 }
 104 #endif
 105 #endif