Mercurial > dropbear
annotate libtommath/tommath_private.h @ 1597:8f7b6f75aa58
fix uninitialised memory in fuzzer codepath
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Tue, 06 Mar 2018 22:02:19 +0800 |
| parents | 8bba51a55704 |
| children | f52919ffd3b1 |
| rev | line source |
|---|---|
| 1436 | 1 /* LibTomMath, multiple-precision integer library -- Tom St Denis |
| 2 * | |
| 3 * LibTomMath is a library that provides multiple-precision | |
| 4 * integer arithmetic as well as number theoretic functionality. | |
| 5 * | |
| 6 * The library was designed directly after the MPI library by | |
| 7 * Michael Fromberger but has been written from scratch with | |
| 8 * additional optimizations in place. | |
| 9 * | |
| 10 * The library is free for all purposes without any express | |
| 11 * guarantee it works. | |
| 12 * | |
| 13 * Tom St Denis, [email protected], http://math.libtomcrypt.com | |
| 14 */ | |
| 15 #ifndef TOMMATH_PRIV_H_ | |
| 16 #define TOMMATH_PRIV_H_ | |
| 17 | |
| 18 #include <tommath.h> | |
| 19 #include <ctype.h> | |
| 20 | |
|
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8bba51a55704
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Matt Johnston <matt@ucc.asn.au>
parents:
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diff
changeset
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21 #ifndef MIN |
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8bba51a55704
Update to libtommath v1.0.1
Matt Johnston <matt@ucc.asn.au>
parents:
1436
diff
changeset
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22 #define MIN(x,y) (((x) < (y)) ? (x) : (y)) |
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8bba51a55704
Update to libtommath v1.0.1
Matt Johnston <matt@ucc.asn.au>
parents:
1436
diff
changeset
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23 #endif |
| 1436 | 24 |
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parents:
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changeset
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25 #ifndef MAX |
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8bba51a55704
Update to libtommath v1.0.1
Matt Johnston <matt@ucc.asn.au>
parents:
1436
diff
changeset
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26 #define MAX(x,y) (((x) > (y)) ? (x) : (y)) |
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8bba51a55704
Update to libtommath v1.0.1
Matt Johnston <matt@ucc.asn.au>
parents:
1436
diff
changeset
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27 #endif |
| 1436 | 28 |
| 29 #ifdef __cplusplus | |
| 30 extern "C" { | |
| 31 | |
| 32 /* C++ compilers don't like assigning void * to mp_digit * */ | |
| 33 #define OPT_CAST(x) (x *) | |
| 34 | |
| 35 #else | |
| 36 | |
| 37 /* C on the other hand doesn't care */ | |
| 38 #define OPT_CAST(x) | |
| 39 | |
| 40 #endif | |
| 41 | |
| 42 /* define heap macros */ | |
| 43 #ifndef XMALLOC | |
| 44 /* default to libc stuff */ | |
| 45 #define XMALLOC malloc | |
| 46 #define XFREE free | |
| 47 #define XREALLOC realloc | |
| 48 #define XCALLOC calloc | |
| 49 #else | |
| 50 /* prototypes for our heap functions */ | |
| 51 extern void *XMALLOC(size_t n); | |
| 52 extern void *XREALLOC(void *p, size_t n); | |
| 53 extern void *XCALLOC(size_t n, size_t s); | |
| 54 extern void XFREE(void *p); | |
| 55 #endif | |
| 56 | |
| 57 /* lowlevel functions, do not call! */ | |
| 58 int s_mp_add(mp_int *a, mp_int *b, mp_int *c); | |
| 59 int s_mp_sub(mp_int *a, mp_int *b, mp_int *c); | |
| 60 #define s_mp_mul(a, b, c) s_mp_mul_digs(a, b, c, (a)->used + (b)->used + 1) | |
| 61 int fast_s_mp_mul_digs(mp_int *a, mp_int *b, mp_int *c, int digs); | |
| 62 int s_mp_mul_digs(mp_int *a, mp_int *b, mp_int *c, int digs); | |
| 63 int fast_s_mp_mul_high_digs(mp_int *a, mp_int *b, mp_int *c, int digs); | |
| 64 int s_mp_mul_high_digs(mp_int *a, mp_int *b, mp_int *c, int digs); | |
| 65 int fast_s_mp_sqr(mp_int *a, mp_int *b); | |
| 66 int s_mp_sqr(mp_int *a, mp_int *b); | |
| 67 int mp_karatsuba_mul(mp_int *a, mp_int *b, mp_int *c); | |
| 68 int mp_toom_mul(mp_int *a, mp_int *b, mp_int *c); | |
| 69 int mp_karatsuba_sqr(mp_int *a, mp_int *b); | |
| 70 int mp_toom_sqr(mp_int *a, mp_int *b); | |
| 71 int fast_mp_invmod(mp_int *a, mp_int *b, mp_int *c); | |
| 72 int mp_invmod_slow (mp_int * a, mp_int * b, mp_int * c); | |
| 73 int fast_mp_montgomery_reduce(mp_int *x, mp_int *n, mp_digit rho); | |
| 74 int mp_exptmod_fast(mp_int *G, mp_int *X, mp_int *P, mp_int *Y, int redmode); | |
| 75 int s_mp_exptmod (mp_int * G, mp_int * X, mp_int * P, mp_int * Y, int redmode); | |
| 76 void bn_reverse(unsigned char *s, int len); | |
| 77 | |
| 78 extern const char *mp_s_rmap; | |
| 79 | |
| 80 /* Fancy macro to set an MPI from another type. | |
| 81 * There are several things assumed: | |
| 82 * x is the counter and unsigned | |
| 83 * a is the pointer to the MPI | |
| 84 * b is the original value that should be set in the MPI. | |
| 85 */ | |
| 86 #define MP_SET_XLONG(func_name, type) \ | |
| 87 int func_name (mp_int * a, type b) \ | |
| 88 { \ | |
| 89 unsigned int x; \ | |
| 90 int res; \ | |
| 91 \ | |
| 92 mp_zero (a); \ | |
| 93 \ | |
| 94 /* set four bits at a time */ \ | |
| 95 for (x = 0; x < (sizeof(type) * 2u); x++) { \ | |
| 96 /* shift the number up four bits */ \ | |
| 97 if ((res = mp_mul_2d (a, 4, a)) != MP_OKAY) { \ | |
| 98 return res; \ | |
| 99 } \ | |
| 100 \ | |
| 101 /* OR in the top four bits of the source */ \ | |
| 102 a->dp[0] |= (b >> ((sizeof(type) * 8u) - 4u)) & 15u; \ | |
| 103 \ | |
| 104 /* shift the source up to the next four bits */ \ | |
| 105 b <<= 4; \ | |
| 106 \ | |
| 107 /* ensure that digits are not clamped off */ \ | |
| 108 a->used += 1; \ | |
| 109 } \ | |
| 110 mp_clamp (a); \ | |
| 111 return MP_OKAY; \ | |
| 112 } | |
| 113 | |
| 114 #ifdef __cplusplus | |
| 115 } | |
| 116 #endif | |
| 117 | |
| 118 #endif | |
| 119 | |
| 120 | |
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Update to libtommath v1.0.1
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parents:
1436
diff
changeset
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121 /* ref: $Format:%D$ */ |
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Matt Johnston <matt@ucc.asn.au>
parents:
1436
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changeset
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122 /* git commit: $Format:%H$ */ |
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parents:
1436
diff
changeset
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123 /* commit time: $Format:%ai$ */ |