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15665d896b
Replaces our built-in SHA3 implementation with a verified one from the HACL* project. This implementation is used when OpenSSL does not provide SHA3 or is not present. 3.11 shiped with a very slow tiny sha3 implementation to get off of the <=3.10 reference implementation that wound up having serious bugs. This brings us back to a reasonably performing built-in implementation consistent with what we've just replaced our other guaranteed available standard hash algorithms with: code from the HACL* project. --------- Co-authored-by: Gregory P. Smith <greg@krypto.org>
266 lines
7.5 KiB
C
266 lines
7.5 KiB
C
/* Copyright (c) INRIA and Microsoft Corporation. All rights reserved.
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Licensed under the Apache 2.0 License. */
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#ifndef __KRML_TARGET_H
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#define __KRML_TARGET_H
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#include <stdlib.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdbool.h>
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#include <inttypes.h>
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#include <limits.h>
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#include <assert.h>
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/* Since KaRaMeL emits the inline keyword unconditionally, we follow the
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* guidelines at https://gcc.gnu.org/onlinedocs/gcc/Inline.html and make this
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* __inline__ to ensure the code compiles with -std=c90 and earlier. */
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#ifdef __GNUC__
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# define inline __inline__
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#endif
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/******************************************************************************/
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/* Macros that KaRaMeL will generate. */
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/******************************************************************************/
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/* For "bare" targets that do not have a C stdlib, the user might want to use
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* [-add-early-include '"mydefinitions.h"'] and override these. */
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#ifndef KRML_HOST_PRINTF
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# define KRML_HOST_PRINTF printf
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#endif
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#if ( \
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(defined __STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && \
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(!(defined KRML_HOST_EPRINTF)))
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# define KRML_HOST_EPRINTF(...) fprintf(stderr, __VA_ARGS__)
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#elif !(defined KRML_HOST_EPRINTF) && defined(_MSC_VER)
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# define KRML_HOST_EPRINTF(...) fprintf(stderr, __VA_ARGS__)
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#endif
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#ifndef KRML_HOST_EXIT
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# define KRML_HOST_EXIT exit
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#endif
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#ifndef KRML_HOST_MALLOC
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# define KRML_HOST_MALLOC malloc
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#endif
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#ifndef KRML_HOST_CALLOC
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# define KRML_HOST_CALLOC calloc
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#endif
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#ifndef KRML_HOST_FREE
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# define KRML_HOST_FREE free
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#endif
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#ifndef KRML_HOST_IGNORE
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# define KRML_HOST_IGNORE(x) (void)(x)
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#endif
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/* In FStar.Buffer.fst, the size of arrays is uint32_t, but it's a number of
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* *elements*. Do an ugly, run-time check (some of which KaRaMeL can eliminate).
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*/
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#if defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 4))
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# define _KRML_CHECK_SIZE_PRAGMA \
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_Pragma("GCC diagnostic ignored \"-Wtype-limits\"")
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#else
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# define _KRML_CHECK_SIZE_PRAGMA
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#endif
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#define KRML_CHECK_SIZE(size_elt, sz) \
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do { \
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_KRML_CHECK_SIZE_PRAGMA \
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if (((size_t)(sz)) > ((size_t)(SIZE_MAX / (size_elt)))) { \
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KRML_HOST_PRINTF( \
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"Maximum allocatable size exceeded, aborting before overflow at " \
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"%s:%d\n", \
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__FILE__, __LINE__); \
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KRML_HOST_EXIT(253); \
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} \
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} while (0)
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/* Macros for prettier unrolling of loops */
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#define KRML_LOOP1(i, n, x) { \
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x \
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i += n; \
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}
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#define KRML_LOOP2(i, n, x) \
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KRML_LOOP1(i, n, x) \
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KRML_LOOP1(i, n, x)
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#define KRML_LOOP3(i, n, x) \
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KRML_LOOP2(i, n, x) \
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KRML_LOOP1(i, n, x)
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#define KRML_LOOP4(i, n, x) \
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KRML_LOOP2(i, n, x) \
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KRML_LOOP2(i, n, x)
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#define KRML_LOOP5(i, n, x) \
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KRML_LOOP4(i, n, x) \
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KRML_LOOP1(i, n, x)
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#define KRML_LOOP6(i, n, x) \
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KRML_LOOP4(i, n, x) \
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KRML_LOOP2(i, n, x)
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#define KRML_LOOP7(i, n, x) \
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KRML_LOOP4(i, n, x) \
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KRML_LOOP3(i, n, x)
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#define KRML_LOOP8(i, n, x) \
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KRML_LOOP4(i, n, x) \
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KRML_LOOP4(i, n, x)
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#define KRML_LOOP9(i, n, x) \
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KRML_LOOP8(i, n, x) \
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KRML_LOOP1(i, n, x)
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#define KRML_LOOP10(i, n, x) \
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KRML_LOOP8(i, n, x) \
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KRML_LOOP2(i, n, x)
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#define KRML_LOOP11(i, n, x) \
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KRML_LOOP8(i, n, x) \
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KRML_LOOP3(i, n, x)
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#define KRML_LOOP12(i, n, x) \
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KRML_LOOP8(i, n, x) \
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KRML_LOOP4(i, n, x)
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#define KRML_LOOP13(i, n, x) \
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KRML_LOOP8(i, n, x) \
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KRML_LOOP5(i, n, x)
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#define KRML_LOOP14(i, n, x) \
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KRML_LOOP8(i, n, x) \
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KRML_LOOP6(i, n, x)
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#define KRML_LOOP15(i, n, x) \
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KRML_LOOP8(i, n, x) \
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KRML_LOOP7(i, n, x)
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#define KRML_LOOP16(i, n, x) \
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KRML_LOOP8(i, n, x) \
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KRML_LOOP8(i, n, x)
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#define KRML_UNROLL_FOR(i, z, n, k, x) do { \
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uint32_t i = z; \
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KRML_LOOP##n(i, k, x) \
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} while (0)
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#define KRML_ACTUAL_FOR(i, z, n, k, x) \
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do { \
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for (uint32_t i = z; i < n; i += k) { \
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x \
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} \
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} while (0)
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#ifndef KRML_UNROLL_MAX
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#define KRML_UNROLL_MAX 16
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#endif
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/* 1 is the number of loop iterations, i.e. (n - z)/k as evaluated by krml */
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#if 0 <= KRML_UNROLL_MAX
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#define KRML_MAYBE_FOR0(i, z, n, k, x)
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#else
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#define KRML_MAYBE_FOR0(i, z, n, k, x) KRML_ACTUAL_FOR(i, z, n, k, x)
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#endif
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#if 1 <= KRML_UNROLL_MAX
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#define KRML_MAYBE_FOR1(i, z, n, k, x) KRML_UNROLL_FOR(i, z, 1, k, x)
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#else
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#define KRML_MAYBE_FOR1(i, z, n, k, x) KRML_ACTUAL_FOR(i, z, n, k, x)
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#endif
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#if 2 <= KRML_UNROLL_MAX
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#define KRML_MAYBE_FOR2(i, z, n, k, x) KRML_UNROLL_FOR(i, z, 2, k, x)
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#else
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#define KRML_MAYBE_FOR2(i, z, n, k, x) KRML_ACTUAL_FOR(i, z, n, k, x)
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#endif
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#if 3 <= KRML_UNROLL_MAX
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#define KRML_MAYBE_FOR3(i, z, n, k, x) KRML_UNROLL_FOR(i, z, 3, k, x)
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#else
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#define KRML_MAYBE_FOR3(i, z, n, k, x) KRML_ACTUAL_FOR(i, z, n, k, x)
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#endif
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#if 4 <= KRML_UNROLL_MAX
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#define KRML_MAYBE_FOR4(i, z, n, k, x) KRML_UNROLL_FOR(i, z, 4, k, x)
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#else
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#define KRML_MAYBE_FOR4(i, z, n, k, x) KRML_ACTUAL_FOR(i, z, n, k, x)
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#endif
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#if 5 <= KRML_UNROLL_MAX
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#define KRML_MAYBE_FOR5(i, z, n, k, x) KRML_UNROLL_FOR(i, z, 5, k, x)
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#else
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#define KRML_MAYBE_FOR5(i, z, n, k, x) KRML_ACTUAL_FOR(i, z, n, k, x)
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#endif
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#if 6 <= KRML_UNROLL_MAX
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#define KRML_MAYBE_FOR6(i, z, n, k, x) KRML_UNROLL_FOR(i, z, 6, k, x)
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#else
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#define KRML_MAYBE_FOR6(i, z, n, k, x) KRML_ACTUAL_FOR(i, z, n, k, x)
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#endif
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#if 7 <= KRML_UNROLL_MAX
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#define KRML_MAYBE_FOR7(i, z, n, k, x) KRML_UNROLL_FOR(i, z, 7, k, x)
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#else
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#define KRML_MAYBE_FOR7(i, z, n, k, x) KRML_ACTUAL_FOR(i, z, n, k, x)
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#endif
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#if 8 <= KRML_UNROLL_MAX
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#define KRML_MAYBE_FOR8(i, z, n, k, x) KRML_UNROLL_FOR(i, z, 8, k, x)
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#else
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#define KRML_MAYBE_FOR8(i, z, n, k, x) KRML_ACTUAL_FOR(i, z, n, k, x)
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#endif
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#if 9 <= KRML_UNROLL_MAX
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#define KRML_MAYBE_FOR9(i, z, n, k, x) KRML_UNROLL_FOR(i, z, 9, k, x)
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#else
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#define KRML_MAYBE_FOR9(i, z, n, k, x) KRML_ACTUAL_FOR(i, z, n, k, x)
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#endif
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#if 10 <= KRML_UNROLL_MAX
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#define KRML_MAYBE_FOR10(i, z, n, k, x) KRML_UNROLL_FOR(i, z, 10, k, x)
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#else
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#define KRML_MAYBE_FOR10(i, z, n, k, x) KRML_ACTUAL_FOR(i, z, n, k, x)
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#endif
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#if 11 <= KRML_UNROLL_MAX
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#define KRML_MAYBE_FOR11(i, z, n, k, x) KRML_UNROLL_FOR(i, z, 11, k, x)
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#else
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#define KRML_MAYBE_FOR11(i, z, n, k, x) KRML_ACTUAL_FOR(i, z, n, k, x)
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#endif
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#if 12 <= KRML_UNROLL_MAX
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#define KRML_MAYBE_FOR12(i, z, n, k, x) KRML_UNROLL_FOR(i, z, 12, k, x)
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#else
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#define KRML_MAYBE_FOR12(i, z, n, k, x) KRML_ACTUAL_FOR(i, z, n, k, x)
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#endif
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#if 13 <= KRML_UNROLL_MAX
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#define KRML_MAYBE_FOR13(i, z, n, k, x) KRML_UNROLL_FOR(i, z, 13, k, x)
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#else
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#define KRML_MAYBE_FOR13(i, z, n, k, x) KRML_ACTUAL_FOR(i, z, n, k, x)
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#endif
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#if 14 <= KRML_UNROLL_MAX
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#define KRML_MAYBE_FOR14(i, z, n, k, x) KRML_UNROLL_FOR(i, z, 14, k, x)
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#else
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#define KRML_MAYBE_FOR14(i, z, n, k, x) KRML_ACTUAL_FOR(i, z, n, k, x)
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#endif
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#if 15 <= KRML_UNROLL_MAX
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#define KRML_MAYBE_FOR15(i, z, n, k, x) KRML_UNROLL_FOR(i, z, 15, k, x)
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#else
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#define KRML_MAYBE_FOR15(i, z, n, k, x) KRML_ACTUAL_FOR(i, z, n, k, x)
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#endif
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#if 16 <= KRML_UNROLL_MAX
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#define KRML_MAYBE_FOR16(i, z, n, k, x) KRML_UNROLL_FOR(i, z, 16, k, x)
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#else
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#define KRML_MAYBE_FOR16(i, z, n, k, x) KRML_ACTUAL_FOR(i, z, n, k, x)
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#endif
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#endif
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