wolfSSL/wolfssl
1
0
Fork 1
mirror of https://github.com/wolfSSL/wolfssl.git synced 2025-07-31 19:24:42 +02:00
Code Issues Packages Projects Releases Wiki Activity

SP int: Rework allocation of temporaries

Browse Source 
Allocate only as much is as needed.
Use macros to simplify code.
Don't use an sp_int if you can use an array of 'sp_int_digit's.
This commit is contained in:
Sean Parkinson
2021-01-27 11:42:44 +10:00
parent acdc267104
commit b330196c28
3 changed files with 1893 additions and 2435 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
configure.ac
View File

@@ -5099,6 +5099,10 @@ do
AM_CFLAGS="$AM_CFLAGS -DSP_INT_BITS=$v"
ENABLED_SP_MATH_ALL="yes"
;;
nomalloc)
AM_CFLAGS="$AM_CFLAGS -DWOLFSSL_SP_NO_MALLOC"
ENABLED_SP_MATH_ALL="yes"
;;
*)
AC_MSG_ERROR([Support SP int bit sizes: 256, 384, 521, 1024, 2048, 3072, 4096. $ENABLED_SP_MATH_ALL not supported])
;;

4303
wolfcrypt/src/sp_int.c
View File

File diff suppressed because it is too large Load Diff

21
wolfssl/wolfcrypt/sp_int.h
View File

@@ -629,23 +629,12 @@ typedef struct sp_ecc_ctx {
#define CheckFastMathSettings() (SP_WORD_SIZE == CheckRunTimeFastMath())
#ifdef WOLFSSL_SP_INT_NEGATIVE
#ifdef HAVE_WOLF_BIGINT
#define SP_INT_EXTRA_OVERHEAD sizeof(int) + sizeof(struct WC_BIGINT)
#else
#define SP_INT_EXTRA_OVERHEAD sizeof(int)
#endif
#elif defined(HAVE_WOLF_BIGINT)
#define SP_INT_EXTRA_OVERHEAD sizeof(struct WC_BIGINT)
#else
#define SP_INT_EXTRA_OVERHEAD 0
#endif
#define WOLFSSL_SP_INT_OVERHEAD \
(sizeof(int) + sizeof(int) + SP_INT_EXTRA_OVERHEAD)
/* The number of bytes to a sp_int with 'cnt' digits. */
#define MP_INT_SIZEOF(cnt) \
(WOLFSSL_SP_INT_OVERHEAD + ((cnt) * SP_WORD_SIZEOF))
(sizeof(sp_int) - (SP_INT_DIGITS - (cnt)) * sizeof(sp_int_digit))
/* The address of the next sp_int after one with 'cnt' digits. */
#define MP_INT_NEXT(t, cnt) \
(sp_int*)(((byte*)(t)) + MP_INT_SIZEOF(cnt))
/**
* A reuslt of NO.