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0b14a5b7cc
The one creating the DRBG should instantiate it, it's there that we know which parameters we should use to instantiate it. This splits the rand init in two parts to avoid a deadlock because when the global drbg is created it wands to call rand_add on the global rand method. Reviewed-by: Rich Salz <rsalz@openssl.org> Reviewed-by: Paul Dale <paul.dale@oracle.com> GH: #4268
68 lines
2.7 KiB
C
68 lines
2.7 KiB
C
/*
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* Copyright 2017 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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/* In CTR mode, use derivation function ctr_df */
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#define RAND_DRBG_FLAG_CTR_USE_DF 0x2
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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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int RAND_DRBG_set(RAND_DRBG *drbg, 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 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_set_reseed_interval(RAND_DRBG *drbg, int interval);
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RAND_DRBG *RAND_DRBG_get0_global(void);
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RAND_DRBG *RAND_DRBG_get0_priv_global(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 *dctx, int idx, void *arg);
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void *RAND_DRBG_get_ex_data(const RAND_DRBG *dctx, int idx);
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/*
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* Callback functions. See comments in drbg_lib.c
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*/
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typedef size_t (*RAND_DRBG_get_entropy_fn)(RAND_DRBG *ctx,
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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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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 *ctx, 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 *ctx,
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unsigned char *out, size_t outlen);
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int RAND_DRBG_set_callbacks(RAND_DRBG *dctx,
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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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#endif
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