121 lines
4.5 KiB
C
121 lines
4.5 KiB
C
/*
|
|
* Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
|
|
*
|
|
* Licensed under the OpenSSL license (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 HEADER_DRBG_RAND_H
|
|
# define HEADER_DRBG_RAND_H
|
|
|
|
# include <time.h>
|
|
# include <openssl/ossl_typ.h>
|
|
|
|
|
|
/* In CTR mode, disable derivation function ctr_df */
|
|
# define RAND_DRBG_FLAG_CTR_NO_DF 0x1
|
|
|
|
/* A logical OR of all used flag bits (currently there is only one) */
|
|
# define RAND_DRBG_USED_FLAGS ( \
|
|
RAND_DRBG_FLAG_CTR_NO_DF \
|
|
)
|
|
|
|
/*
|
|
* 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 implemantion does
|
|
* not take RAND_DRBG_STRENGTH into account and sets the strength of the DRBG
|
|
* to that of the cipher.
|
|
*
|
|
* RAND_DRBG_STRENGTH is currently only used for the legacy RAND
|
|
* implementation.
|
|
*
|
|
* Currently supported ciphers are: NID_aes_128_ctr, NID_aes_192_ctr and
|
|
* NID_aes_256_ctr
|
|
*/
|
|
# define RAND_DRBG_STRENGTH 256
|
|
# define RAND_DRBG_TYPE NID_aes_256_ctr
|
|
# define RAND_DRBG_FLAGS 0
|
|
|
|
|
|
# ifdef __cplusplus
|
|
extern "C" {
|
|
# endif
|
|
|
|
/*
|
|
* Object lifetime functions.
|
|
*/
|
|
RAND_DRBG *RAND_DRBG_new(int type, unsigned int flags, RAND_DRBG *parent);
|
|
RAND_DRBG *RAND_DRBG_secure_new(int type, unsigned int flags, RAND_DRBG *parent);
|
|
int RAND_DRBG_set(RAND_DRBG *drbg, int type, unsigned int flags);
|
|
int RAND_DRBG_set_defaults(int type, unsigned int flags);
|
|
int RAND_DRBG_instantiate(RAND_DRBG *drbg,
|
|
const unsigned char *pers, size_t perslen);
|
|
int RAND_DRBG_uninstantiate(RAND_DRBG *drbg);
|
|
void RAND_DRBG_free(RAND_DRBG *drbg);
|
|
|
|
/*
|
|
* Object "use" functions.
|
|
*/
|
|
int RAND_DRBG_reseed(RAND_DRBG *drbg,
|
|
const unsigned char *adin, size_t adinlen,
|
|
int prediction_resistance);
|
|
int RAND_DRBG_generate(RAND_DRBG *drbg, unsigned char *out, size_t outlen,
|
|
int prediction_resistance,
|
|
const unsigned char *adin, size_t adinlen);
|
|
int RAND_DRBG_bytes(RAND_DRBG *drbg, unsigned char *out, size_t outlen);
|
|
|
|
int RAND_DRBG_set_reseed_interval(RAND_DRBG *drbg, unsigned int interval);
|
|
int RAND_DRBG_set_reseed_time_interval(RAND_DRBG *drbg, time_t interval);
|
|
|
|
int RAND_DRBG_set_reseed_defaults(
|
|
unsigned int master_reseed_interval,
|
|
unsigned int slave_reseed_interval,
|
|
time_t master_reseed_time_interval,
|
|
time_t slave_reseed_time_interval
|
|
);
|
|
|
|
RAND_DRBG *RAND_DRBG_get0_master(void);
|
|
RAND_DRBG *RAND_DRBG_get0_public(void);
|
|
RAND_DRBG *RAND_DRBG_get0_private(void);
|
|
|
|
/*
|
|
* EXDATA
|
|
*/
|
|
# define RAND_DRBG_get_ex_new_index(l, p, newf, dupf, freef) \
|
|
CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DRBG, l, p, newf, dupf, freef)
|
|
int RAND_DRBG_set_ex_data(RAND_DRBG *drbg, int idx, void *arg);
|
|
void *RAND_DRBG_get_ex_data(const RAND_DRBG *drbg, int idx);
|
|
|
|
/*
|
|
* Callback function typedefs
|
|
*/
|
|
typedef size_t (*RAND_DRBG_get_entropy_fn)(RAND_DRBG *drbg,
|
|
unsigned char **pout,
|
|
int entropy, size_t min_len,
|
|
size_t max_len,
|
|
int prediction_resistance);
|
|
typedef void (*RAND_DRBG_cleanup_entropy_fn)(RAND_DRBG *ctx,
|
|
unsigned char *out, size_t outlen);
|
|
typedef size_t (*RAND_DRBG_get_nonce_fn)(RAND_DRBG *drbg, unsigned char **pout,
|
|
int entropy, size_t min_len,
|
|
size_t max_len);
|
|
typedef void (*RAND_DRBG_cleanup_nonce_fn)(RAND_DRBG *drbg,
|
|
unsigned char *out, size_t outlen);
|
|
|
|
int RAND_DRBG_set_callbacks(RAND_DRBG *drbg,
|
|
RAND_DRBG_get_entropy_fn get_entropy,
|
|
RAND_DRBG_cleanup_entropy_fn cleanup_entropy,
|
|
RAND_DRBG_get_nonce_fn get_nonce,
|
|
RAND_DRBG_cleanup_nonce_fn cleanup_nonce);
|
|
|
|
|
|
# ifdef __cplusplus
|
|
}
|
|
# endif
|
|
|
|
#endif
|