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annotate CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/include/openssl/rand_drbg.h @ 69:33d812a61356

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planemo upload commit 2e9511a184a1ca667c7be0c6321a36dc4e3d116d
author jpayne
date Tue, 18 Mar 2025 17:55:14 -0400
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jpayne@69 1 /*
jpayne@69 2 * Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
jpayne@69 3 *
jpayne@69 4 * Licensed under the OpenSSL license (the "License"). You may not use
jpayne@69 5 * this file except in compliance with the License. You can obtain a copy
jpayne@69 6 * in the file LICENSE in the source distribution or at
jpayne@69 7 * https://www.openssl.org/source/license.html
jpayne@69 8 */
jpayne@69 9
jpayne@69 10 #ifndef HEADER_DRBG_RAND_H
jpayne@69 11 # define HEADER_DRBG_RAND_H
jpayne@69 12
jpayne@69 13 # include <time.h>
jpayne@69 14 # include <openssl/ossl_typ.h>
jpayne@69 15 # include <openssl/obj_mac.h>
jpayne@69 16
jpayne@69 17 /*
jpayne@69 18 * RAND_DRBG flags
jpayne@69 19 *
jpayne@69 20 * Note: if new flags are added, the constant `rand_drbg_used_flags`
jpayne@69 21 * in drbg_lib.c needs to be updated accordingly.
jpayne@69 22 */
jpayne@69 23
jpayne@69 24 /* In CTR mode, disable derivation function ctr_df */
jpayne@69 25 # define RAND_DRBG_FLAG_CTR_NO_DF 0x1
jpayne@69 26
jpayne@69 27
jpayne@69 28 # if OPENSSL_API_COMPAT < 0x10200000L
jpayne@69 29 /* This #define was replaced by an internal constant and should not be used. */
jpayne@69 30 # define RAND_DRBG_USED_FLAGS (RAND_DRBG_FLAG_CTR_NO_DF)
jpayne@69 31 # endif
jpayne@69 32
jpayne@69 33 /*
jpayne@69 34 * Default security strength (in the sense of [NIST SP 800-90Ar1])
jpayne@69 35 *
jpayne@69 36 * NIST SP 800-90Ar1 supports the strength of the DRBG being smaller than that
jpayne@69 37 * of the cipher by collecting less entropy. The current DRBG implementation
jpayne@69 38 * does not take RAND_DRBG_STRENGTH into account and sets the strength of the
jpayne@69 39 * DRBG to that of the cipher.
jpayne@69 40 *
jpayne@69 41 * RAND_DRBG_STRENGTH is currently only used for the legacy RAND
jpayne@69 42 * implementation.
jpayne@69 43 *
jpayne@69 44 * Currently supported ciphers are: NID_aes_128_ctr, NID_aes_192_ctr and
jpayne@69 45 * NID_aes_256_ctr
jpayne@69 46 */
jpayne@69 47 # define RAND_DRBG_STRENGTH 256
jpayne@69 48 /* Default drbg type */
jpayne@69 49 # define RAND_DRBG_TYPE NID_aes_256_ctr
jpayne@69 50 /* Default drbg flags */
jpayne@69 51 # define RAND_DRBG_FLAGS 0
jpayne@69 52
jpayne@69 53
jpayne@69 54 # ifdef __cplusplus
jpayne@69 55 extern "C" {
jpayne@69 56 # endif
jpayne@69 57
jpayne@69 58 /*
jpayne@69 59 * Object lifetime functions.
jpayne@69 60 */
jpayne@69 61 RAND_DRBG *RAND_DRBG_new(int type, unsigned int flags, RAND_DRBG *parent);
jpayne@69 62 RAND_DRBG *RAND_DRBG_secure_new(int type, unsigned int flags, RAND_DRBG *parent);
jpayne@69 63 int RAND_DRBG_set(RAND_DRBG *drbg, int type, unsigned int flags);
jpayne@69 64 int RAND_DRBG_set_defaults(int type, unsigned int flags);
jpayne@69 65 int RAND_DRBG_instantiate(RAND_DRBG *drbg,
jpayne@69 66 const unsigned char *pers, size_t perslen);
jpayne@69 67 int RAND_DRBG_uninstantiate(RAND_DRBG *drbg);
jpayne@69 68 void RAND_DRBG_free(RAND_DRBG *drbg);
jpayne@69 69
jpayne@69 70 /*
jpayne@69 71 * Object "use" functions.
jpayne@69 72 */
jpayne@69 73 int RAND_DRBG_reseed(RAND_DRBG *drbg,
jpayne@69 74 const unsigned char *adin, size_t adinlen,
jpayne@69 75 int prediction_resistance);
jpayne@69 76 int RAND_DRBG_generate(RAND_DRBG *drbg, unsigned char *out, size_t outlen,
jpayne@69 77 int prediction_resistance,
jpayne@69 78 const unsigned char *adin, size_t adinlen);
jpayne@69 79 int RAND_DRBG_bytes(RAND_DRBG *drbg, unsigned char *out, size_t outlen);
jpayne@69 80
jpayne@69 81 int RAND_DRBG_set_reseed_interval(RAND_DRBG *drbg, unsigned int interval);
jpayne@69 82 int RAND_DRBG_set_reseed_time_interval(RAND_DRBG *drbg, time_t interval);
jpayne@69 83
jpayne@69 84 int RAND_DRBG_set_reseed_defaults(
jpayne@69 85 unsigned int master_reseed_interval,
jpayne@69 86 unsigned int slave_reseed_interval,
jpayne@69 87 time_t master_reseed_time_interval,
jpayne@69 88 time_t slave_reseed_time_interval
jpayne@69 89 );
jpayne@69 90
jpayne@69 91 RAND_DRBG *RAND_DRBG_get0_master(void);
jpayne@69 92 RAND_DRBG *RAND_DRBG_get0_public(void);
jpayne@69 93 RAND_DRBG *RAND_DRBG_get0_private(void);
jpayne@69 94
jpayne@69 95 /*
jpayne@69 96 * EXDATA
jpayne@69 97 */
jpayne@69 98 # define RAND_DRBG_get_ex_new_index(l, p, newf, dupf, freef) \
jpayne@69 99 CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DRBG, l, p, newf, dupf, freef)
jpayne@69 100 int RAND_DRBG_set_ex_data(RAND_DRBG *drbg, int idx, void *arg);
jpayne@69 101 void *RAND_DRBG_get_ex_data(const RAND_DRBG *drbg, int idx);
jpayne@69 102
jpayne@69 103 /*
jpayne@69 104 * Callback function typedefs
jpayne@69 105 */
jpayne@69 106 typedef size_t (*RAND_DRBG_get_entropy_fn)(RAND_DRBG *drbg,
jpayne@69 107 unsigned char **pout,
jpayne@69 108 int entropy, size_t min_len,
jpayne@69 109 size_t max_len,
jpayne@69 110 int prediction_resistance);
jpayne@69 111 typedef void (*RAND_DRBG_cleanup_entropy_fn)(RAND_DRBG *ctx,
jpayne@69 112 unsigned char *out, size_t outlen);
jpayne@69 113 typedef size_t (*RAND_DRBG_get_nonce_fn)(RAND_DRBG *drbg, unsigned char **pout,
jpayne@69 114 int entropy, size_t min_len,
jpayne@69 115 size_t max_len);
jpayne@69 116 typedef void (*RAND_DRBG_cleanup_nonce_fn)(RAND_DRBG *drbg,
jpayne@69 117 unsigned char *out, size_t outlen);
jpayne@69 118
jpayne@69 119 int RAND_DRBG_set_callbacks(RAND_DRBG *drbg,
jpayne@69 120 RAND_DRBG_get_entropy_fn get_entropy,
jpayne@69 121 RAND_DRBG_cleanup_entropy_fn cleanup_entropy,
jpayne@69 122 RAND_DRBG_get_nonce_fn get_nonce,
jpayne@69 123 RAND_DRBG_cleanup_nonce_fn cleanup_nonce);
jpayne@69 124
jpayne@69 125
jpayne@69 126 # ifdef __cplusplus
jpayne@69 127 }
jpayne@69 128 # endif
jpayne@69 129
jpayne@69 130 #endif