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SP C: change number of words for RSA/DH

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Faster small code and fast code.
Allow fixed 4096-bit FFDHE parameters in benchmark.
Convert [u]int[32|64|128]*_t types to sp_[u]int[32|64|128].
Add a div for when top bits are all 1
WOLFSSL_SP_FAST_LARGE_CODE added to make mul_add function faster on
non-embedded platforms.
Change mod_exp window sizes for same performance but less memory.
P256 with c32 now 9 words instead of 10.
This commit is contained in:
Sean Parkinson
2021-07-16 22:17:20 +10:00
parent ffd69f6426
commit d372f097f7
12 changed files with 34580 additions and 18233 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
configure.ac
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@ -5238,6 +5238,21 @@ do
fi
;;
smallfast)
ENABLED_SP_SMALL=yes
ENABLED_SP_RSA=yes
ENABLED_SP_DH=yes
ENABLED_SP_FF_2048=yes
ENABLED_SP_FF_3072=yes
ENABLED_SP_ECC=yes
ENABLED_SP_EC_256=yes
if test "$host_cpu" = "x86_64"; then
ENABLED_SP_FF_4096=yes
ENABLED_SP_EC_384=yes
fi
AM_CFLAGS="$AM_CFLAGS -DWOLFSSL_SP_FAST_MODEXP"
;;
yes)
ENABLED_SP_RSA=yes
ENABLED_SP_DH=yes
@ -5390,6 +5405,14 @@ if test "$ENABLED_SP_RSA" = "yes" || test "$ENABLED_SP_DH" = "yes"; then
AM_CFLAGS="$AM_CFLAGS -DWOLFSSL_SP_4096"
AM_CCASFLAGS="$AM_CCASFLAGS -DWOLFSSL_SP_4096"
fi
case $host_cpu in
*x86_64* | *aarch64*)
AM_CFLAGS="$AM_CFLAGS -DWOLFSSL_SP_LARGE_CODE"
;;
*)
;;
esac
fi
if test "$ENABLED_ECC" != "no" && test "$ENABLED_SP_ECC" = "yes"; then
ENABLED_SP=yes

14
wolfcrypt/benchmark/benchmark.c
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@ -5056,7 +5056,11 @@ exit_bench_rsa_key:
#endif
#endif
#ifdef HAVE_FFDHE_4096
#define BENCH_DH_KEY_SIZE 512 /* for 4096 bit */
#else
#define BENCH_DH_KEY_SIZE 384 /* for 3072 bit */
#endif
#define BENCH_DH_PRIV_SIZE (BENCH_DH_KEY_SIZE/8)
void bench_dh(int doAsync)
@ -5127,6 +5131,12 @@ void bench_dh(int doAsync)
dhKeySz = 3072;
}
#endif
#ifdef HAVE_FFDHE_4096
else if (use_ffdhe == 4096) {
params = wc_Dh_ffdhe4096_Get();
dhKeySz = 4096;
}
#endif
/* clear for done cleanup */
XMEMSET(dhKey, 0, sizeof(dhKey));
@ -7005,6 +7015,10 @@ int main(int argc, char** argv)
else if (string_matches(argv[1], "-ffdhe3072"))
use_ffdhe = 3072;
#endif
#if !defined(NO_DH) && defined(HAVE_FFDHE_4096)
else if (string_matches(argv[1], "-ffdhe4096"))
use_ffdhe = 4096;
#endif
#if defined(HAVE_ECC) && !defined(NO_ECC256)
else if (string_matches(argv[1], "-p256"))
bench_asym_algs |= BENCH_ECC_P256;

1003
wolfcrypt/src/sp_arm32.c
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1019
wolfcrypt/src/sp_arm64.c
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1004
wolfcrypt/src/sp_armthumb.c
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32147
wolfcrypt/src/sp_c32.c
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15851
wolfcrypt/src/sp_c64.c
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1003
wolfcrypt/src/sp_cortexm.c
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551
wolfcrypt/src/sp_x86_64.c
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120
wolfcrypt/src/sp_x86_64_asm.S
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@ -219,15 +219,15 @@ L_2048_from_bin_movbe_zero_end:
*/
#ifndef __APPLE__
.text
.globl sp_2048_to_bin_bswap
.type sp_2048_to_bin_bswap,@function
.globl sp_2048_to_bin_bswap_32
.type sp_2048_to_bin_bswap_32,@function
.align 16
sp_2048_to_bin_bswap:
sp_2048_to_bin_bswap_32:
#else
.section __TEXT,__text
.globl _sp_2048_to_bin_bswap
.globl _sp_2048_to_bin_bswap_32
.p2align 4
_sp_2048_to_bin_bswap:
_sp_2048_to_bin_bswap_32:
#endif /* __APPLE__ */
movq 248(%rdi), %rdx
movq 240(%rdi), %rax
@ -327,7 +327,7 @@ _sp_2048_to_bin_bswap:
movq %rax, 248(%rsi)
repz retq
#ifndef __APPLE__
.size sp_2048_to_bin_bswap,.-sp_2048_to_bin_bswap
.size sp_2048_to_bin_bswap_32,.-sp_2048_to_bin_bswap_32
#endif /* __APPLE__ */
#ifndef NO_MOVBE_SUPPORT
/* Write r as big endian to byte array.
@ -339,15 +339,15 @@ _sp_2048_to_bin_bswap:
*/
#ifndef __APPLE__
.text
.globl sp_2048_to_bin_movbe
.type sp_2048_to_bin_movbe,@function
.globl sp_2048_to_bin_movbe_32
.type sp_2048_to_bin_movbe_32,@function
.align 16
sp_2048_to_bin_movbe:
sp_2048_to_bin_movbe_32:
#else
.section __TEXT,__text
.globl _sp_2048_to_bin_movbe
.globl _sp_2048_to_bin_movbe_32
.p2align 4
_sp_2048_to_bin_movbe:
_sp_2048_to_bin_movbe_32:
#endif /* __APPLE__ */
movbeq 248(%rdi), %rdx
movbeq 240(%rdi), %rax
@ -415,7 +415,7 @@ _sp_2048_to_bin_movbe:
movq %rax, 248(%rsi)
repz retq
#ifndef __APPLE__
.size sp_2048_to_bin_movbe,.-sp_2048_to_bin_movbe
.size sp_2048_to_bin_movbe_32,.-sp_2048_to_bin_movbe_32
#endif /* __APPLE__ */
#endif /* NO_MOVBE_SUPPORT */
/* Multiply a and b into r. (r = a * b)
@ -12889,15 +12889,15 @@ L_3072_from_bin_movbe_zero_end:
*/
#ifndef __APPLE__
.text
.globl sp_3072_to_bin_bswap
.type sp_3072_to_bin_bswap,@function
.globl sp_3072_to_bin_bswap_48
.type sp_3072_to_bin_bswap_48,@function
.align 16
sp_3072_to_bin_bswap:
sp_3072_to_bin_bswap_48:
#else
.section __TEXT,__text
.globl _sp_3072_to_bin_bswap
.globl _sp_3072_to_bin_bswap_48
.p2align 4
_sp_3072_to_bin_bswap:
_sp_3072_to_bin_bswap_48:
#endif /* __APPLE__ */
movq 376(%rdi), %rdx
movq 368(%rdi), %rax
@ -13045,7 +13045,7 @@ _sp_3072_to_bin_bswap:
movq %rax, 376(%rsi)
repz retq
#ifndef __APPLE__
.size sp_3072_to_bin_bswap,.-sp_3072_to_bin_bswap
.size sp_3072_to_bin_bswap_48,.-sp_3072_to_bin_bswap_48
#endif /* __APPLE__ */
#ifndef NO_MOVBE_SUPPORT
/* Write r as big endian to byte array.
@ -13057,15 +13057,15 @@ _sp_3072_to_bin_bswap:
*/
#ifndef __APPLE__
.text
.globl sp_3072_to_bin_movbe
.type sp_3072_to_bin_movbe,@function
.globl sp_3072_to_bin_movbe_48
.type sp_3072_to_bin_movbe_48,@function
.align 16
sp_3072_to_bin_movbe:
sp_3072_to_bin_movbe_48:
#else
.section __TEXT,__text
.globl _sp_3072_to_bin_movbe
.globl _sp_3072_to_bin_movbe_48
.p2align 4
_sp_3072_to_bin_movbe:
_sp_3072_to_bin_movbe_48:
#endif /* __APPLE__ */
movbeq 376(%rdi), %rdx
movbeq 368(%rdi), %rax
@ -13165,7 +13165,7 @@ _sp_3072_to_bin_movbe:
movq %rax, 376(%rsi)
repz retq
#ifndef __APPLE__
.size sp_3072_to_bin_movbe,.-sp_3072_to_bin_movbe
.size sp_3072_to_bin_movbe_48,.-sp_3072_to_bin_movbe_48
#endif /* __APPLE__ */
#endif /* NO_MOVBE_SUPPORT */
/* Multiply a and b into r. (r = a * b)
@ -28258,15 +28258,15 @@ L_4096_from_bin_movbe_zero_end:
*/
#ifndef __APPLE__
.text
.globl sp_4096_to_bin_bswap
.type sp_4096_to_bin_bswap,@function
.globl sp_4096_to_bin_bswap_64
.type sp_4096_to_bin_bswap_64,@function
.align 16
sp_4096_to_bin_bswap:
sp_4096_to_bin_bswap_64:
#else
.section __TEXT,__text
.globl _sp_4096_to_bin_bswap
.globl _sp_4096_to_bin_bswap_64
.p2align 4
_sp_4096_to_bin_bswap:
_sp_4096_to_bin_bswap_64:
#endif /* __APPLE__ */
movq 504(%rdi), %rdx
movq 496(%rdi), %rax
@ -28462,7 +28462,7 @@ _sp_4096_to_bin_bswap:
movq %rax, 504(%rsi)
repz retq
#ifndef __APPLE__
.size sp_4096_to_bin_bswap,.-sp_4096_to_bin_bswap
.size sp_4096_to_bin_bswap_64,.-sp_4096_to_bin_bswap_64
#endif /* __APPLE__ */
#ifndef NO_MOVBE_SUPPORT
/* Write r as big endian to byte array.
@ -28474,15 +28474,15 @@ _sp_4096_to_bin_bswap:
*/
#ifndef __APPLE__
.text
.globl sp_4096_to_bin_movbe
.type sp_4096_to_bin_movbe,@function
.globl sp_4096_to_bin_movbe_64
.type sp_4096_to_bin_movbe_64,@function
.align 16
sp_4096_to_bin_movbe:
sp_4096_to_bin_movbe_64:
#else
.section __TEXT,__text
.globl _sp_4096_to_bin_movbe
.globl _sp_4096_to_bin_movbe_64
.p2align 4
_sp_4096_to_bin_movbe:
_sp_4096_to_bin_movbe_64:
#endif /* __APPLE__ */
movbeq 504(%rdi), %rdx
movbeq 496(%rdi), %rax
@ -28614,7 +28614,7 @@ _sp_4096_to_bin_movbe:
movq %rax, 504(%rsi)
repz retq
#ifndef __APPLE__
.size sp_4096_to_bin_movbe,.-sp_4096_to_bin_movbe
.size sp_4096_to_bin_movbe_64,.-sp_4096_to_bin_movbe_64
#endif /* __APPLE__ */
#endif /* NO_MOVBE_SUPPORT */
/* Sub b from a into a. (a -= b)
@ -41080,15 +41080,15 @@ L_256_from_bin_movbe_zero_end:
*/
#ifndef __APPLE__
.text
.globl sp_256_to_bin_bswap
.type sp_256_to_bin_bswap,@function
.globl sp_256_to_bin_bswap_4
.type sp_256_to_bin_bswap_4,@function
.align 16
sp_256_to_bin_bswap:
sp_256_to_bin_bswap_4:
#else
.section __TEXT,__text
.globl _sp_256_to_bin_bswap
.globl _sp_256_to_bin_bswap_4
.p2align 4
_sp_256_to_bin_bswap:
_sp_256_to_bin_bswap_4:
#endif /* __APPLE__ */
movq 24(%rdi), %rdx
movq 16(%rdi), %rax
@ -41104,7 +41104,7 @@ _sp_256_to_bin_bswap:
movq %rax, 24(%rsi)
repz retq
#ifndef __APPLE__
.size sp_256_to_bin_bswap,.-sp_256_to_bin_bswap
.size sp_256_to_bin_bswap_4,.-sp_256_to_bin_bswap_4
#endif /* __APPLE__ */
#ifndef NO_MOVBE_SUPPORT
/* Write r as big endian to byte array.
@ -41116,15 +41116,15 @@ _sp_256_to_bin_bswap:
*/
#ifndef __APPLE__
.text
.globl sp_256_to_bin_movbe
.type sp_256_to_bin_movbe,@function
.globl sp_256_to_bin_movbe_4
.type sp_256_to_bin_movbe_4,@function
.align 16
sp_256_to_bin_movbe:
sp_256_to_bin_movbe_4:
#else
.section __TEXT,__text
.globl _sp_256_to_bin_movbe
.globl _sp_256_to_bin_movbe_4
.p2align 4
_sp_256_to_bin_movbe:
_sp_256_to_bin_movbe_4:
#endif /* __APPLE__ */
movbeq 24(%rdi), %rdx
movbeq 16(%rdi), %rax
@ -41136,7 +41136,7 @@ _sp_256_to_bin_movbe:
movq %rax, 24(%rsi)
repz retq
#ifndef __APPLE__
.size sp_256_to_bin_movbe,.-sp_256_to_bin_movbe
.size sp_256_to_bin_movbe_4,.-sp_256_to_bin_movbe_4
#endif /* __APPLE__ */
#endif /* NO_MOVBE_SUPPORT */
#ifdef HAVE_INTEL_AVX2
@ -45179,15 +45179,15 @@ L_384_from_bin_movbe_zero_end:
*/
#ifndef __APPLE__
.text
.globl sp_384_to_bin_bswap
.type sp_384_to_bin_bswap,@function
.globl sp_384_to_bin_bswap_6
.type sp_384_to_bin_bswap_6,@function
.align 16
sp_384_to_bin_bswap:
sp_384_to_bin_bswap_6:
#else
.section __TEXT,__text
.globl _sp_384_to_bin_bswap
.globl _sp_384_to_bin_bswap_6
.p2align 4
_sp_384_to_bin_bswap:
_sp_384_to_bin_bswap_6:
#endif /* __APPLE__ */
movq 40(%rdi), %rdx
movq 32(%rdi), %rax
@ -45209,7 +45209,7 @@ _sp_384_to_bin_bswap:
movq %rax, 40(%rsi)
repz retq
#ifndef __APPLE__
.size sp_384_to_bin_bswap,.-sp_384_to_bin_bswap
.size sp_384_to_bin_bswap_6,.-sp_384_to_bin_bswap_6
#endif /* __APPLE__ */
#ifndef NO_MOVBE_SUPPORT
/* Write r as big endian to byte array.
@ -45221,15 +45221,15 @@ _sp_384_to_bin_bswap:
*/
#ifndef __APPLE__
.text
.globl sp_384_to_bin_movbe
.type sp_384_to_bin_movbe,@function
.globl sp_384_to_bin_movbe_6
.type sp_384_to_bin_movbe_6,@function
.align 16
sp_384_to_bin_movbe:
sp_384_to_bin_movbe_6:
#else
.section __TEXT,__text
.globl _sp_384_to_bin_movbe
.globl _sp_384_to_bin_movbe_6
.p2align 4
_sp_384_to_bin_movbe:
_sp_384_to_bin_movbe_6:
#endif /* __APPLE__ */
movbeq 40(%rdi), %rdx
movbeq 32(%rdi), %rax
@ -45245,7 +45245,7 @@ _sp_384_to_bin_movbe:
movq %rax, 40(%rsi)
repz retq
#ifndef __APPLE__
.size sp_384_to_bin_movbe,.-sp_384_to_bin_movbe
.size sp_384_to_bin_movbe_6,.-sp_384_to_bin_movbe_6
#endif /* __APPLE__ */
#endif /* NO_MOVBE_SUPPORT */
/* Sub b from a into a. (a -= b)

40
wolfcrypt/src/sp_x86_64_asm.asm
View File

@ -217,7 +217,7 @@ ENDIF
; * a Byte array.
; */
_text SEGMENT READONLY PARA
sp_2048_to_bin_bswap PROC
sp_2048_to_bin_bswap_32 PROC
mov rax, QWORD PTR [rcx+248]
mov r8, QWORD PTR [rcx+240]
bswap rax
@ -315,7 +315,7 @@ sp_2048_to_bin_bswap PROC
mov QWORD PTR [rdx+240], rax
mov QWORD PTR [rdx+248], r8
ret
sp_2048_to_bin_bswap ENDP
sp_2048_to_bin_bswap_32 ENDP
_text ENDS
IFNDEF NO_MOVBE_SUPPORT
; /* Write r as big endian to byte array.
@ -326,7 +326,7 @@ IFNDEF NO_MOVBE_SUPPORT
; * a Byte array.
; */
_text SEGMENT READONLY PARA
sp_2048_to_bin_movbe PROC
sp_2048_to_bin_movbe_32 PROC
movbe rax, QWORD PTR [rcx+248]
movbe r8, QWORD PTR [rcx+240]
mov QWORD PTR [rdx], rax
@ -392,7 +392,7 @@ sp_2048_to_bin_movbe PROC
mov QWORD PTR [rdx+240], rax
mov QWORD PTR [rdx+248], r8
ret
sp_2048_to_bin_movbe ENDP
sp_2048_to_bin_movbe_32 ENDP
_text ENDS
ENDIF
; /* Multiply a and b into r. (r = a * b)
@ -12502,7 +12502,7 @@ ENDIF
; * a Byte array.
; */
_text SEGMENT READONLY PARA
sp_3072_to_bin_bswap PROC
sp_3072_to_bin_bswap_48 PROC
mov rax, QWORD PTR [rcx+376]
mov r8, QWORD PTR [rcx+368]
bswap rax
@ -12648,7 +12648,7 @@ sp_3072_to_bin_bswap PROC
mov QWORD PTR [rdx+368], rax
mov QWORD PTR [rdx+376], r8
ret
sp_3072_to_bin_bswap ENDP
sp_3072_to_bin_bswap_48 ENDP
_text ENDS
IFNDEF NO_MOVBE_SUPPORT
; /* Write r as big endian to byte array.
@ -12659,7 +12659,7 @@ IFNDEF NO_MOVBE_SUPPORT
; * a Byte array.
; */
_text SEGMENT READONLY PARA
sp_3072_to_bin_movbe PROC
sp_3072_to_bin_movbe_48 PROC
movbe rax, QWORD PTR [rcx+376]
movbe r8, QWORD PTR [rcx+368]
mov QWORD PTR [rdx], rax
@ -12757,7 +12757,7 @@ sp_3072_to_bin_movbe PROC
mov QWORD PTR [rdx+368], rax
mov QWORD PTR [rdx+376], r8
ret
sp_3072_to_bin_movbe ENDP
sp_3072_to_bin_movbe_48 ENDP
_text ENDS
ENDIF
; /* Multiply a and b into r. (r = a * b)
@ -27384,7 +27384,7 @@ ENDIF
; * a Byte array.
; */
_text SEGMENT READONLY PARA
sp_4096_to_bin_bswap PROC
sp_4096_to_bin_bswap_64 PROC
mov rax, QWORD PTR [rcx+504]
mov r8, QWORD PTR [rcx+496]
bswap rax
@ -27578,7 +27578,7 @@ sp_4096_to_bin_bswap PROC
mov QWORD PTR [rdx+496], rax
mov QWORD PTR [rdx+504], r8
ret
sp_4096_to_bin_bswap ENDP
sp_4096_to_bin_bswap_64 ENDP
_text ENDS
IFNDEF NO_MOVBE_SUPPORT
; /* Write r as big endian to byte array.
@ -27589,7 +27589,7 @@ IFNDEF NO_MOVBE_SUPPORT
; * a Byte array.
; */
_text SEGMENT READONLY PARA
sp_4096_to_bin_movbe PROC
sp_4096_to_bin_movbe_64 PROC
movbe rax, QWORD PTR [rcx+504]
movbe r8, QWORD PTR [rcx+496]
mov QWORD PTR [rdx], rax
@ -27719,7 +27719,7 @@ sp_4096_to_bin_movbe PROC
mov QWORD PTR [rdx+496], rax
mov QWORD PTR [rdx+504], r8
ret
sp_4096_to_bin_movbe ENDP
sp_4096_to_bin_movbe_64 ENDP
_text ENDS
ENDIF
; /* Sub b from a into a. (a -= b)
@ -39716,7 +39716,7 @@ ENDIF
; * a Byte array.
; */
_text SEGMENT READONLY PARA
sp_256_to_bin_bswap PROC
sp_256_to_bin_bswap_4 PROC
mov rax, QWORD PTR [rcx+24]
mov r8, QWORD PTR [rcx+16]
bswap rax
@ -39730,7 +39730,7 @@ sp_256_to_bin_bswap PROC
mov QWORD PTR [rdx+16], rax
mov QWORD PTR [rdx+24], r8
ret
sp_256_to_bin_bswap ENDP
sp_256_to_bin_bswap_4 ENDP
_text ENDS
IFNDEF NO_MOVBE_SUPPORT
; /* Write r as big endian to byte array.
@ -39741,7 +39741,7 @@ IFNDEF NO_MOVBE_SUPPORT
; * a Byte array.
; */
_text SEGMENT READONLY PARA
sp_256_to_bin_movbe PROC
sp_256_to_bin_movbe_4 PROC
movbe rax, QWORD PTR [rcx+24]
movbe r8, QWORD PTR [rcx+16]
mov QWORD PTR [rdx], rax
@ -39751,7 +39751,7 @@ sp_256_to_bin_movbe PROC
mov QWORD PTR [rdx+16], rax
mov QWORD PTR [rdx+24], r8
ret
sp_256_to_bin_movbe ENDP
sp_256_to_bin_movbe_4 ENDP
_text ENDS
ENDIF
IFDEF HAVE_INTEL_AVX2
@ -43467,7 +43467,7 @@ ENDIF
; * a Byte array.
; */
_text SEGMENT READONLY PARA
sp_384_to_bin_bswap PROC
sp_384_to_bin_bswap_6 PROC
mov rax, QWORD PTR [rcx+40]
mov r8, QWORD PTR [rcx+32]
bswap rax
@ -43487,7 +43487,7 @@ sp_384_to_bin_bswap PROC
mov QWORD PTR [rdx+32], rax
mov QWORD PTR [rdx+40], r8
ret
sp_384_to_bin_bswap ENDP
sp_384_to_bin_bswap_6 ENDP
_text ENDS
IFNDEF NO_MOVBE_SUPPORT
; /* Write r as big endian to byte array.
@ -43498,7 +43498,7 @@ IFNDEF NO_MOVBE_SUPPORT
; * a Byte array.
; */
_text SEGMENT READONLY PARA
sp_384_to_bin_movbe PROC
sp_384_to_bin_movbe_6 PROC
movbe rax, QWORD PTR [rcx+40]
movbe r8, QWORD PTR [rcx+32]
mov QWORD PTR [rdx], rax
@ -43512,7 +43512,7 @@ sp_384_to_bin_movbe PROC
mov QWORD PTR [rdx+32], rax
mov QWORD PTR [rdx+40], r8
ret
sp_384_to_bin_movbe ENDP
sp_384_to_bin_movbe_6 ENDP
_text ENDS
ENDIF
; /* Sub b from a into a. (a -= b)

38
wolfssl/wolfcrypt/sp_int.h
View File

@ -314,6 +314,25 @@ extern "C" {
/* Mask of word size. */
#define SP_WORD_MASK (SP_WORD_SIZE - 1)
/* For debugging only - format string for different digit sizes. */
#if SP_WORD_SIZE == 64
#if SP_ULONG_BITS == 64
#define SP_PRINT_FMT "%016lx"
#else
#define SP_PRINT_FMT "%016llx"
#endif
#elif SP_WORD_SIZE == 32
#if SP_UINT_BITS == 32
#define SP_PRINT_FMT "%08x"
#else
#define SP_PRINT_FMT "%08lx"
#endif
#elif SP_WORD_SIZE == 16
#define SP_PRINT_FMT "%04x"
#elif SP_WORD_SIZE == 8
#define SP_PRINT_FMT "%02x"
#endif
#if defined(WOLFSSL_HAVE_SP_ECC) && defined(WOLFSSL_SP_NONBLOCK)
/* Non-blocking ECC operation context. */
@ -417,25 +436,6 @@ typedef struct sp_ecc_ctx {
#endif
/* For debugging only - format string for different digit sizes. */
#if SP_WORD_SIZE == 64
#if SP_ULONG_BITS == 64
#define SP_PRINT_FMT "%016lx"
#else
#define SP_PRINT_FMT "%016llx"
#endif
#elif SP_WORD_SIZE == 32
#if SP_UINT_BITS == 32
#define SP_PRINT_FMT "%08x"
#else
#define SP_PRINT_FMT "%08lx"
#endif
#elif SP_WORD_SIZE == 16
#define SP_PRINT_FMT "%04x"
#elif SP_WORD_SIZE == 8
#define SP_PRINT_FMT "%02x"
#endif
#ifndef NO_FILESYSTEM
/* Output is formatted to be used with script that checks calculations. */