3aa77530ca
- Tweek man page. - Remove all mention of RANDOM_FORTUNA. If the system owner wants YARROW or DUMMY, they ask for it, otherwise they get FORTUNA. - Tidy up headers a bit. - Tidy up declarations a bit. - Make static in a couple of places where needed. - Move Yarrow/Fortuna SYSINIT/SYSUNINIT to randomdev.c, moving us towards a single file where the algorithm context is used. - Get rid of random_*_process_buffer() functions. They were only used in one place each, and are better subsumed into those places. - Remove *_post_read() functions as they are stubs everywhere. - Assert against buffer size illegalities. - Clean up some silly code in the randomdev_read() routine. - Make the harvesting more consistent. - Make some requested argument name changes. - Tidy up and clarify a few comments. - Make some requested comment changes. - Make some requested macro changes. * NOTE: the thing calling itself a 'unit test' is not yet a proper unit test, but it helps me ensure things work. It may be a proper unit test at some time in the future, but for now please don't make any assumptions or hold any expectations. Differential Revision: https://reviews.freebsd.org/D2025 Approved by: so (/dev/random blanket)
58 lines
2.4 KiB
C
58 lines
2.4 KiB
C
/*-
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* Copyright (c) 2000-2015 Mark R V Murray
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef SYS_DEV_RANDOM_HASH_H_INCLUDED
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#define SYS_DEV_RANDOM_HASH_H_INCLUDED
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/* Keys are formed from cipher blocks */
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#define RANDOM_KEYSIZE 32 /* (in bytes) == 256 bits */
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#define RANDOM_KEYSIZE_WORDS (RANDOM_KEYSIZE/sizeof(uint32_t))
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#define RANDOM_BLOCKSIZE 16 /* (in bytes) == 128 bits */
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#define RANDOM_BLOCKSIZE_WORDS (RANDOM_BLOCKSIZE/sizeof(uint32_t))
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#define RANDOM_KEYS_PER_BLOCK (RANDOM_KEYSIZE/RANDOM_BLOCKSIZE)
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/* The size of the zero block portion used to form H_d(m) */
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#define RANDOM_ZERO_BLOCKSIZE 64 /* (in bytes) == 512 zero bits */
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struct randomdev_hash {
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SHA256_CTX sha;
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};
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struct randomdev_key {
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keyInstance key; /* Key schedule */
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cipherInstance cipher; /* Rijndael internal */
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};
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void randomdev_hash_init(struct randomdev_hash *);
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void randomdev_hash_iterate(struct randomdev_hash *, const void *, size_t);
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void randomdev_hash_finish(struct randomdev_hash *, void *);
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void randomdev_encrypt_init(struct randomdev_key *, const void *);
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void randomdev_encrypt(struct randomdev_key *context, const void *, void *, u_int);
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#endif /* SYS_DEV_RANDOM_HASH_H_INCLUDED */
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