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