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