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1 /*
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2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
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3 *
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4 * Licensed under the OpenSSL license (the "License"). You may not use
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5 * this file except in compliance with the License. You can obtain a copy
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6 * in the file LICENSE in the source distribution or at
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7 * https://www.openssl.org/source/license.html
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8 */
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9
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10 #ifndef HEADER_RAND_H
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11 # define HEADER_RAND_H
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12
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13 # include <stdlib.h>
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14 # include <openssl/ossl_typ.h>
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15 # include <openssl/e_os2.h>
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16 # include <openssl/randerr.h>
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17
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18 #ifdef __cplusplus
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19 extern "C" {
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20 #endif
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21
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22 struct rand_meth_st {
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23 int (*seed) (const void *buf, int num);
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24 int (*bytes) (unsigned char *buf, int num);
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25 void (*cleanup) (void);
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26 int (*add) (const void *buf, int num, double randomness);
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27 int (*pseudorand) (unsigned char *buf, int num);
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28 int (*status) (void);
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29 };
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30
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31 int RAND_set_rand_method(const RAND_METHOD *meth);
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32 const RAND_METHOD *RAND_get_rand_method(void);
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33 # ifndef OPENSSL_NO_ENGINE
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34 int RAND_set_rand_engine(ENGINE *engine);
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35 # endif
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36
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37 RAND_METHOD *RAND_OpenSSL(void);
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38
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39 # if OPENSSL_API_COMPAT < 0x10100000L
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40 # define RAND_cleanup() while(0) continue
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41 # endif
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42 int RAND_bytes(unsigned char *buf, int num);
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43 int RAND_priv_bytes(unsigned char *buf, int num);
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44 DEPRECATEDIN_1_1_0(int RAND_pseudo_bytes(unsigned char *buf, int num))
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45
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46 void RAND_seed(const void *buf, int num);
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47 void RAND_keep_random_devices_open(int keep);
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48
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49 # if defined(__ANDROID__) && defined(__NDK_FPABI__)
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50 __NDK_FPABI__ /* __attribute__((pcs("aapcs"))) on ARM */
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51 # endif
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52 void RAND_add(const void *buf, int num, double randomness);
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53 int RAND_load_file(const char *file, long max_bytes);
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54 int RAND_write_file(const char *file);
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55 const char *RAND_file_name(char *file, size_t num);
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56 int RAND_status(void);
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57
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58 # ifndef OPENSSL_NO_EGD
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59 int RAND_query_egd_bytes(const char *path, unsigned char *buf, int bytes);
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60 int RAND_egd(const char *path);
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61 int RAND_egd_bytes(const char *path, int bytes);
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62 # endif
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63
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64 int RAND_poll(void);
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65
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66 # if defined(_WIN32) && (defined(BASETYPES) || defined(_WINDEF_H))
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67 /* application has to include <windows.h> in order to use these */
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68 DEPRECATEDIN_1_1_0(void RAND_screen(void))
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69 DEPRECATEDIN_1_1_0(int RAND_event(UINT, WPARAM, LPARAM))
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70 # endif
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71
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72
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73 #ifdef __cplusplus
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74 }
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75 #endif
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76
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77 #endif
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