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- /*
- * 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
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