/* * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved. * * Licensed under the Apache License 2.0 (the "License"). You may not use * this file except in compliance with the License. You can obtain a copy * in the file LICENSE in the source distribution or at * https://www.openssl.org/source/license.html */ #ifndef OPENSSL_RAND_H # define OPENSSL_RAND_H # pragma once # include <openssl/macros.h> # ifndef OPENSSL_NO_DEPRECATED_3_0 # define HEADER_RAND_H # endif # include <stdlib.h> # include <openssl/types.h> # include <openssl/e_os2.h> # include <openssl/randerr.h> # include <openssl/evp.h> #ifdef __cplusplus extern "C" { #endif /* * Default security strength (in the sense of [NIST SP 800-90Ar1]) * * NIST SP 800-90Ar1 supports the strength of the DRBG being smaller than that * of the cipher by collecting less entropy. The current DRBG implementation * does not take RAND_DRBG_STRENGTH into account and sets the strength of the * DRBG to that of the cipher. */ # define RAND_DRBG_STRENGTH 256 # ifndef OPENSSL_NO_DEPRECATED_3_0 struct rand_meth_st { int (*seed) (const void *buf, int num); int (*bytes) (unsigned char *buf, int num); void (*cleanup) (void); int (*add) (const void *buf, int num, double randomness); int (*pseudorand) (unsigned char *buf, int num); int (*status) (void); }; OSSL_DEPRECATEDIN_3_0 int RAND_set_rand_method(const RAND_METHOD *meth); OSSL_DEPRECATEDIN_3_0 const RAND_METHOD *RAND_get_rand_method(void); # ifndef OPENSSL_NO_ENGINE OSSL_DEPRECATEDIN_3_0 int RAND_set_rand_engine(ENGINE *engine); # endif OSSL_DEPRECATEDIN_3_0 RAND_METHOD *RAND_OpenSSL(void); # endif /* OPENSSL_NO_DEPRECATED_3_0 */ # ifndef OPENSSL_NO_DEPRECATED_1_1_0 # define RAND_cleanup() while(0) continue # endif int RAND_bytes(unsigned char *buf, int num); int RAND_priv_bytes(unsigned char *buf, int num); /* * Equivalent of RAND_priv_bytes() but additionally taking an OSSL_LIB_CTX and * a strength. */ int RAND_priv_bytes_ex(OSSL_LIB_CTX *ctx, unsigned char *buf, size_t num, unsigned int strength); /* * Equivalent of RAND_bytes() but additionally taking an OSSL_LIB_CTX and * a strength. */ int RAND_bytes_ex(OSSL_LIB_CTX *ctx, unsigned char *buf, size_t num, unsigned int strength); # ifndef OPENSSL_NO_DEPRECATED_1_1_0 OSSL_DEPRECATEDIN_1_1_0 int RAND_pseudo_bytes(unsigned char *buf, int num); # endif EVP_RAND_CTX *RAND_get0_primary(OSSL_LIB_CTX *ctx); EVP_RAND_CTX *RAND_get0_public(OSSL_LIB_CTX *ctx); EVP_RAND_CTX *RAND_get0_private(OSSL_LIB_CTX *ctx); int RAND_set0_public(OSSL_LIB_CTX *ctx, EVP_RAND_CTX *rand); int RAND_set0_private(OSSL_LIB_CTX *ctx, EVP_RAND_CTX *rand); int RAND_set_DRBG_type(OSSL_LIB_CTX *ctx, const char *drbg, const char *propq, const char *cipher, const char *digest); int RAND_set_seed_source_type(OSSL_LIB_CTX *ctx, const char *seed, const char *propq); void RAND_seed(const void *buf, int num); void RAND_keep_random_devices_open(int keep); # if defined(__ANDROID__) && defined(__NDK_FPABI__) __NDK_FPABI__ /* __attribute__((pcs("aapcs"))) on ARM */ # endif void RAND_add(const void *buf, int num, double randomness); int RAND_load_file(const char *file, long max_bytes); int RAND_write_file(const char *file); const char *RAND_file_name(char *file, size_t num); int RAND_status(void); # ifndef OPENSSL_NO_EGD int RAND_query_egd_bytes(const char *path, unsigned char *buf, int bytes); int RAND_egd(const char *path); int RAND_egd_bytes(const char *path, int bytes); # endif int RAND_poll(void); # if defined(_WIN32) && (defined(BASETYPES) || defined(_WINDEF_H)) /* application has to include <windows.h> in order to use these */ # ifndef OPENSSL_NO_DEPRECATED_1_1_0 OSSL_DEPRECATEDIN_1_1_0 void RAND_screen(void); OSSL_DEPRECATEDIN_1_1_0 int RAND_event(UINT, WPARAM, LPARAM); # endif # endif #ifdef __cplusplus } #endif #endif