diff options
Diffstat (limited to 'src/lib/libcrypto/bn/bn_exp.c')
-rw-r--r-- | src/lib/libcrypto/bn/bn_exp.c | 16 |
1 files changed, 0 insertions, 16 deletions
diff --git a/src/lib/libcrypto/bn/bn_exp.c b/src/lib/libcrypto/bn/bn_exp.c index 5d9263e01e..a27373c97b 100644 --- a/src/lib/libcrypto/bn/bn_exp.c +++ b/src/lib/libcrypto/bn/bn_exp.c | |||
@@ -114,11 +114,6 @@ | |||
114 | #include "bn_lcl.h" | 114 | #include "bn_lcl.h" |
115 | 115 | ||
116 | #include <stdlib.h> | 116 | #include <stdlib.h> |
117 | #if defined(__GNUC__) | ||
118 | # ifndef alloca | ||
119 | # define alloca(s) __builtin_alloca((s)) | ||
120 | # endif | ||
121 | #endif | ||
122 | 117 | ||
123 | /* maximum precomputation table size for *variable* sliding windows */ | 118 | /* maximum precomputation table size for *variable* sliding windows */ |
124 | #define TABLE_SIZE 32 | 119 | #define TABLE_SIZE 32 |
@@ -632,12 +627,6 @@ BN_mod_exp_mont_consttime(BIGNUM *rr, const BIGNUM *a, const BIGNUM *p, | |||
632 | numPowers = 1 << window; | 627 | numPowers = 1 << window; |
633 | powerbufLen = sizeof(m->d[0]) * (top * numPowers + | 628 | powerbufLen = sizeof(m->d[0]) * (top * numPowers + |
634 | ((2*top) > numPowers ? (2*top) : numPowers)); | 629 | ((2*top) > numPowers ? (2*top) : numPowers)); |
635 | #ifdef alloca | ||
636 | if (powerbufLen < 3072) | ||
637 | powerbufFree = alloca(powerbufLen + | ||
638 | MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH); | ||
639 | else | ||
640 | #endif | ||
641 | if ((powerbufFree = (unsigned char*)malloc(powerbufLen + | 630 | if ((powerbufFree = (unsigned char*)malloc(powerbufLen + |
642 | MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH)) == NULL) | 631 | MOD_EXP_CTIME_MIN_CACHE_LINE_WIDTH)) == NULL) |
643 | goto err; | 632 | goto err; |
@@ -645,11 +634,6 @@ BN_mod_exp_mont_consttime(BIGNUM *rr, const BIGNUM *a, const BIGNUM *p, | |||
645 | powerbuf = MOD_EXP_CTIME_ALIGN(powerbufFree); | 634 | powerbuf = MOD_EXP_CTIME_ALIGN(powerbufFree); |
646 | memset(powerbuf, 0, powerbufLen); | 635 | memset(powerbuf, 0, powerbufLen); |
647 | 636 | ||
648 | #ifdef alloca | ||
649 | if (powerbufLen < 3072) | ||
650 | powerbufFree = NULL; | ||
651 | #endif | ||
652 | |||
653 | /* lay down tmp and am right after powers table */ | 637 | /* lay down tmp and am right after powers table */ |
654 | tmp.d = (BN_ULONG *)(powerbuf + sizeof(m->d[0]) * top * numPowers); | 638 | tmp.d = (BN_ULONG *)(powerbuf + sizeof(m->d[0]) * top * numPowers); |
655 | am.d = tmp.d + top; | 639 | am.d = tmp.d + top; |