;testing speed of RSA coding (256 bit)
;for program CPUID (WildWest)
;author: halyavin
;structure of long number:
;rd 1 : length of number
;rd 39: digits of number
;length of zero number is equal to 1.
number_digits=39
number_size=4*(number_digits+1)
;calling convention:
;procedures can change eax,ecx,edx
init_rsatest:
;to do: add initialization which depends on processor.
ret
set_zero:
;eax - address of number
;[eax]:=0
;result: eax isn't changed
xor ecx,ecx
xor edx,edx
inc edx
mov dword [eax],edx
mov edx,39
add eax,4
.loop:
mov dword [eax],ecx
add eax,4
dec edx
jnz .loop
sub eax,160 ;size of number
ret
ladd:
;eax - first number
;edx - second number
;[eax]:=[eax]+[edx]
pushad
mov ecx,dword [eax]
mov esi,dword [edx]
mov ebp,eax
cmp ecx,esi
jg .l1
mov ecx,esi
.l1:
add eax,4
add edx,4
xor ebx,ebx
xor esi,esi
mov edi,ecx
.l2:
add ebx,dword [eax]
adc ebx,dword [edx]
adc esi,esi
mov dword [eax],ebx
mov ebx,esi
add eax,4
xor esi,esi
add edx,4
dec ecx
jnz .l2
test ebx,ebx
jz .lend
inc dword [eax]
inc edi
.lend:
mov eax,ebp
mov dword [eax],edi
popad
ret
lsub:
;eax - first number
;edx - second number
;[eax]=[eax]-[edx]
;[eax]>=[edx]
pushad
mov ecx,dword [eax]
mov edi,ecx
mov ebp,eax
add eax,4
add edx,4
xor ebx,ebx
xor esi,esi
.l1:
mov esi,dword [eax]
sub esi,ebx
sbb esi,dword [edx]
mov dword [eax],esi
sbb esi,esi
mov ebx,esi
neg ebx
add eax,4
add edx,4
dec ecx
jnz .l1
dec edi
jz .lend
sub eax,4
.l2:
mov ebx,dword [eax]
test ebx,ebx
jnz .lend
sub eax,4
dec edi
jnz .l2
.lend:
inc edi
mov eax,ebp
mov [eax],edi
popad
ret
lcmp:
;eax - address of number
;edx - address of number
;result: ecx=1 if eax>edx
; ecx=0 if eax=edx
; ecx=-1 if eax<edx
push ebx
mov ebx,dword [eax]
cmp ebx,dword [edx]
jg .l1
jl .l2
push esi
push eax
push edx
lea eax,[eax+4*ebx]
lea edx,[edx+4*ebx]
.l3:
mov esi,dword [eax]
cmp esi,dword [edx]
ja .l4
jb .l5
sub eax,4
sub edx,4
dec ebx
jnz .l3
xor ecx,ecx
.lend:
pop edx
pop eax
pop esi
pop ebx
ret
.l4:
mov ecx,1
jmp .lend
.l5:
mov ecx,-1
jmp .lend
.l1:
mov ecx,1
pop ebx
ret
.l2:
mov ecx,-1
pop ebx
ret
lshr:
;eax - number
;edx - shift
;[eax]=[eax] shr edx
cmp edx,32
jl .general
mov ecx,edx
shr ecx,5
and edx,31
push esi
mov esi,ecx
cmp ecx,dword [eax]
jng .norm
xor esi,esi
mov ecx,dword [eax]
.norm:
push edi
push ebp
mov ebp,eax
add eax,4
.loop1:
test esi,esi
jz .endloop1
mov edi,dword [eax+4*ecx]
mov dword [eax],edi
add eax,4
dec esi
jmp .loop1
.endloop1:
mov eax,ebp
mov esi,dword [eax]
lea eax,[eax+4*esi]
xor edi,edi
mov esi,ecx
.loop2:
mov dword [eax],edi
sub eax,4
dec ecx
jnz .loop2
mov eax,ebp
sub dword [eax],esi
jz .len0
.lend1:
pop ebp
pop edi
pop esi
jmp .general
.len0:
inc dword [eax]
jmp .lend1
.general:
test edx,edx
jz .lend
push ebx
push esi
push edi
push ebp
push eax
mov ebx,dword [eax]
lea eax,[eax+4*ebx]
mov ecx,edx
sub ecx,32
neg ecx
mov esi,1
shl esi,cl
dec esi
mov ecx,edx
xor ebp,ebp
.loop3:
mov edi,dword [eax]
ror edi,cl
mov edx,edi
and edx,esi
or edx,ebp
mov dword [eax],edx
mov edx,esi
not edx
and edi,edx
mov ebp,edi
sub eax,4
dec ebx
jnz .loop3
pop eax
mov ebx,dword [eax]
mov ecx,dword [eax+4*ebx]
dec ebx
jz .norm1
test ecx,ecx
jnz .norm1
dec dword [eax]
.norm1:
pop ebp
pop edi
pop esi
pop ebx
.lend:
ret
lshl:
;eax - number
;edx - shift
;[eax]:=[eax] shl edx
cmp edx,32
jl .general
cmp dword [eax],1
jnz .l1
cmp dword [eax+4],0
jnz .l1
ret
.l1:
push esi
push ebx
mov ecx,edx
shr ecx,5
and edx,31
mov ebx,dword [eax]
add dword [eax],ecx
lea eax,[eax+4*ebx]
.loop1:
mov esi,dword [eax]
mov dword [eax+4*ecx],esi
sub eax,4
dec ebx
jnz .loop1
xor esi,esi
lea eax,[eax+4*ecx]
.loop2:
mov dword [eax],esi
sub eax,4
dec ecx
jnz .loop2
pop ebx
pop esi
jmp .general
.general:
test edx,edx
jz .lend
pushad
mov ecx,edx
mov ebx,1
shl ebx,cl
dec ebx
mov edx,dword [eax]
xor esi,esi
lea eax,[eax+4*edx]
.loop3:
mov edi,dword [eax]
rol edi,cl
mov ebp,edi
and ebp,ebx
add esi,ebp
mov dword [eax+4],esi
mov ebp,ebx
not ebp
and edi,ebp
mov esi,edi
sub eax,4
dec edx
jnz .loop3
mov dword [eax+4],esi
mov edx,dword [eax]
cmp dword [eax+4*edx+4],0
jz .l2
inc dword [eax]
.l2:
popad
.lend:
ret
lwrite_bit:
;eax - address of number
;edx - number of bit
;set bit to 1. First bit has number 0.
mov ecx,edx
shr edx,5
inc edx
cmp dword [eax],edx
jg .norm
mov dword [eax],edx
.norm:
push ebx
mov ebx,1
shl ebx,cl
or dword [eax+4*edx],ebx
pop ebx
ret
lcopy:
;eax - address of first number
;edx - address of second number
;[eax]:=[edx]
push ebx
push esi
push eax
push edx
push dword [eax]
mov ebx,dword [edx]
mov ecx,ebx
add edx,4
add eax,4
.loop1:
mov esi,dword [edx]
mov dword [eax],esi
add eax,4
add edx,4
dec ecx
jnz .loop1
pop ecx
sub ecx,ebx
jng .l1
xor esi,esi
.loop2:
mov dword [eax],esi
add eax,4
dec ecx
jnz .loop2
.l1:
pop edx
pop eax
mov dword [eax],ebx
pop esi
pop ebx
ret
lmul:
;eax - first number
;edx - second number
;ecx - third number
;[eax]:=[ecx]*[edx]
push ecx
push edx
call set_zero
pop edx
pop ecx
pushad
sub esp,16 ; local variables
mov ebp,edx
mov ebx,dword [edx]
mov dword [esp],ebx
mov ebx,dword [ecx]
mov dword [esp+4],ebx
mov ebx,eax
add ebp,4
add ecx,4
add ebx,4
xor esi,esi
mov dword [esp+8],esi
.loop1:
xor esi,esi
mov dword [esp+12],esi
.loop2:
mov eax,dword [esp+12]
mov eax,dword [ecx+4*eax]
mov edi,dword [esp+8]
mov edi,dword [ebp+4*edi]
mul edi
add eax,esi
adc edx,0
mov edi,dword [esp+12]
add edi,dword [esp+8]
add eax,dword [ebx+4*edi]
adc edx,0
mov dword [ebx+4*edi],eax
mov esi,edx
inc dword [esp+12]
mov eax,dword [esp+4]
cmp dword [esp+12],eax
jnz .loop2
test esi,esi
jz .loop1end
mov eax,dword [esp+12]
add eax,dword [esp+8]
mov [ebx+4*eax],esi
.loop1end:
inc dword [esp+8]
mov eax,dword [esp]
cmp dword [esp+8],eax
jnz .loop1
add esp,16
sub ebx,4
mov ecx,39
xor edx,edx
.loop3:
cmp dword [ebx+4*ecx],edx
jnz .loop3end
dec ecx
jnz .loop3
.loop3end:
test ecx,ecx
jnz .l1
inc ecx
.l1:
mov dword [ebx],ecx
popad
ret
lmod:
;eax - address of first number
;edx - address of second number
;[eax]:=[eax] mod [edx]
mov ecx,dword [eax]
sub ecx,dword [edx]
jl .lend
pushad
inc ecx
mov ebp,eax
mov eax,edx
mov edi,eax
shl ecx,5
mov edx,ecx
mov esi,ecx
call lshl
.loop:
mov eax,ebp
mov edx,edi
call lcmp
test ecx,ecx
jl .l1
call lsub
.l1:
dec esi
js .endloop
mov eax,edx
mov edx,1
call lshr
jmp .loop
.endloop:
popad
.lend:
ret
rsacode:
;eax - address of message
;edx - open key
;ecx - address of module
;esi - temparary number1
;edi - temparary number2
;esi - [eax]^edx mod (ecx)
;[eax] is changed.
push eax
push edx
push ecx
xchg eax,esi
call set_zero
mov dword [eax+4],1
mov esi,eax
mov eax,edi
call set_zero
.loop:
mov ecx,dword [esp+4]
test ecx,1
jz .l1
mov eax,edi
mov edx,esi
mov ecx,dword [esp+8]
call lmul
mov edx,dword [esp]
call lmod
mov eax,esi
mov edx,edi
call lcopy
.l1:
shr dword [esp+4],1
jz .endloop
mov edx,dword [esp+8]
mov ecx,edx
mov eax,edi
call lmul
mov edx,dword [esp]
call lmod
mov eax,dword [esp+8]
mov edx,edi
call lcopy
jmp .loop
.endloop:
pop ecx
pop edx
pop eax
ret
rsa_test:
mov eax,num1
mov dword [eax],16
mov ecx,1
mov edx,16
.loop:
add eax,4
mov dword [eax],ecx
dec edx
jnz .loop
mov eax,num1
mov ebx,[iter]
mov dword [eax+4],ebx
inc dword [iter]
mov edx,[openkey]
mov ecx,module
mov esi,num2
mov edi,num3
call rsacode
ret
init_test:
xor eax,eax
mov [iter],eax
mov [openkey],10007
mov eax,num2
call set_zero
mov eax,num3
call set_zero
ret
module:
;module=p*q.
;where
;p=
;dd 9
;dd 147,2,3,4,5,6,7,8,9
;times 30 dd 0
;q=
;dd 9
;dd 163,4,5,6,7,8,9,10,11
;times 30 dd 0
dd 17
dd 23961,914,1232,1556,1887,2226,2574,2932,3301,288,308,314,305,280,238,178,99
times 22 dd 0
;in decimal
;p=1042128803351525332193283695592003066548124262686459610611886292768993621049491
;q=1273712981880077616387281148672409277231717442781838063285512054053473668300963
;n=1327372985619988354987062708438042005329282516404896732667039640816200186465366322016844458439816997285872910403676793109807015096535910981266920474905959833