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comparison 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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67:0e9998148a16 69:33d812a61356
1 /*
2 * Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 #ifndef HEADER_DRBG_RAND_H
11 # define HEADER_DRBG_RAND_H
12
13 # include <time.h>
14 # include <openssl/ossl_typ.h>
15 # include <openssl/obj_mac.h>
16
17 /*
18 * RAND_DRBG flags
19 *
20 * Note: if new flags are added, the constant `rand_drbg_used_flags`
21 * in drbg_lib.c needs to be updated accordingly.
22 */
23
24 /* In CTR mode, disable derivation function ctr_df */
25 # define RAND_DRBG_FLAG_CTR_NO_DF 0x1
26
27
28 # if OPENSSL_API_COMPAT < 0x10200000L
29 /* This #define was replaced by an internal constant and should not be used. */
30 # define RAND_DRBG_USED_FLAGS (RAND_DRBG_FLAG_CTR_NO_DF)
31 # endif
32
33 /*
34 * Default security strength (in the sense of [NIST SP 800-90Ar1])
35 *
36 * NIST SP 800-90Ar1 supports the strength of the DRBG being smaller than that
37 * of the cipher by collecting less entropy. The current DRBG implementation
38 * does not take RAND_DRBG_STRENGTH into account and sets the strength of the
39 * DRBG to that of the cipher.
40 *
41 * RAND_DRBG_STRENGTH is currently only used for the legacy RAND
42 * implementation.
43 *
44 * Currently supported ciphers are: NID_aes_128_ctr, NID_aes_192_ctr and
45 * NID_aes_256_ctr
46 */
47 # define RAND_DRBG_STRENGTH 256
48 /* Default drbg type */
49 # define RAND_DRBG_TYPE NID_aes_256_ctr
50 /* Default drbg flags */
51 # define RAND_DRBG_FLAGS 0
52
53
54 # ifdef __cplusplus
55 extern "C" {
56 # endif
57
58 /*
59 * Object lifetime functions.
60 */
61 RAND_DRBG *RAND_DRBG_new(int type, unsigned int flags, RAND_DRBG *parent);
62 RAND_DRBG *RAND_DRBG_secure_new(int type, unsigned int flags, RAND_DRBG *parent);
63 int RAND_DRBG_set(RAND_DRBG *drbg, int type, unsigned int flags);
64 int RAND_DRBG_set_defaults(int type, unsigned int flags);
65 int RAND_DRBG_instantiate(RAND_DRBG *drbg,
66 const unsigned char *pers, size_t perslen);
67 int RAND_DRBG_uninstantiate(RAND_DRBG *drbg);
68 void RAND_DRBG_free(RAND_DRBG *drbg);
69
70 /*
71 * Object "use" functions.
72 */
73 int RAND_DRBG_reseed(RAND_DRBG *drbg,
74 const unsigned char *adin, size_t adinlen,
75 int prediction_resistance);
76 int RAND_DRBG_generate(RAND_DRBG *drbg, unsigned char *out, size_t outlen,
77 int prediction_resistance,
78 const unsigned char *adin, size_t adinlen);
79 int RAND_DRBG_bytes(RAND_DRBG *drbg, unsigned char *out, size_t outlen);
80
81 int RAND_DRBG_set_reseed_interval(RAND_DRBG *drbg, unsigned int interval);
82 int RAND_DRBG_set_reseed_time_interval(RAND_DRBG *drbg, time_t interval);
83
84 int RAND_DRBG_set_reseed_defaults(
85 unsigned int master_reseed_interval,
86 unsigned int slave_reseed_interval,
87 time_t master_reseed_time_interval,
88 time_t slave_reseed_time_interval
89 );
90
91 RAND_DRBG *RAND_DRBG_get0_master(void);
92 RAND_DRBG *RAND_DRBG_get0_public(void);
93 RAND_DRBG *RAND_DRBG_get0_private(void);
94
95 /*
96 * EXDATA
97 */
98 # define RAND_DRBG_get_ex_new_index(l, p, newf, dupf, freef) \
99 CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DRBG, l, p, newf, dupf, freef)
100 int RAND_DRBG_set_ex_data(RAND_DRBG *drbg, int idx, void *arg);
101 void *RAND_DRBG_get_ex_data(const RAND_DRBG *drbg, int idx);
102
103 /*
104 * Callback function typedefs
105 */
106 typedef size_t (*RAND_DRBG_get_entropy_fn)(RAND_DRBG *drbg,
107 unsigned char **pout,
108 int entropy, size_t min_len,
109 size_t max_len,
110 int prediction_resistance);
111 typedef void (*RAND_DRBG_cleanup_entropy_fn)(RAND_DRBG *ctx,
112 unsigned char *out, size_t outlen);
113 typedef size_t (*RAND_DRBG_get_nonce_fn)(RAND_DRBG *drbg, unsigned char **pout,
114 int entropy, size_t min_len,
115 size_t max_len);
116 typedef void (*RAND_DRBG_cleanup_nonce_fn)(RAND_DRBG *drbg,
117 unsigned char *out, size_t outlen);
118
119 int RAND_DRBG_set_callbacks(RAND_DRBG *drbg,
120 RAND_DRBG_get_entropy_fn get_entropy,
121 RAND_DRBG_cleanup_entropy_fn cleanup_entropy,
122 RAND_DRBG_get_nonce_fn get_nonce,
123 RAND_DRBG_cleanup_nonce_fn cleanup_nonce);
124
125
126 # ifdef __cplusplus
127 }
128 # endif
129
130 #endif