'MASM SHA256 running from C#
I received a task in college to compare execution time for calculating SHA256 in C# and assembly.
It is supposed to be a simple WPF app with file input and 2 buttons.
After selecting the file via input and clicking the 1st button the code is calculating SHA256 of the provided file and measures the execution time - this part works as expected.
Clicking the 2nd button is supposed to call function from imported DLL (I used [DllImport] attribute) and calculate SHA256 with assembly. Here I got completely stuck. I have no idea how to create a function which will calculate this hash from assembly (here I want to point out that I don't have to write this function by my own, but it was also not provided).
After hours of searching through the internet and looking for some simple MASM SHA256 implementation I gave up and decided to try another angle. Found some simple implementation in C and tried to compile it to MASM, but with no luck there as well. I am getting a lot of different compilation errors from VS and I have no idea if I am even heading in the correct direction. That's why I decided to ask here for some guidance.
Here is the code sample of assembly I am currently working with, and a screenshot of errors I am getting.
.code
sha256 proc
k:
DWORD 1116352408
DWORD 1899447441
DWORD -1245643825
DWORD -373957723
DWORD 961987163
DWORD 1508970993
DWORD -1841331548
DWORD -1424204075
DWORD -670586216
DWORD 310598401
DWORD 607225278
DWORD 1426881987
DWORD 1925078388
DWORD -2132889090
DWORD -1680079193
DWORD -1046744716
DWORD -459576895
DWORD -272742522
DWORD 264347078
DWORD 604807628
DWORD 770255983
DWORD 1249150122
DWORD 1555081692
DWORD 1996064986
DWORD -1740746414
DWORD -1473132947
DWORD -1341970488
DWORD -1084653625
DWORD -958395405
DWORD -710438585
DWORD 113926993
DWORD 338241895
DWORD 666307205
DWORD 773529912
DWORD 1294757372
DWORD 1396182291
DWORD 1695183700
DWORD 1986661051
DWORD -2117940946
DWORD -1838011259
DWORD -1564481375
DWORD -1474664885
DWORD -1035236496
DWORD -949202525
DWORD -778901479
DWORD -694614492
DWORD -200395387
DWORD 275423344
DWORD 430227734
DWORD 506948616
DWORD 659060556
DWORD 883997877
DWORD 958139571
DWORD 1322822218
DWORD 1537002063
DWORD 1747873779
DWORD 1955562222
DWORD 2024104815
DWORD -2067236844
DWORD -1933114872
DWORD -1866530822
DWORD -1538233109
DWORD -1090935817
DWORD -965641998
memsetOur:
push rbp
mov rbp, rsp
mov QWORD PTR [rbp-24], rdi
mov DWORD PTR [rbp-28], esi
mov QWORD PTR [rbp-40], rdx
mov rax, QWORD PTR [rbp-24]
mov QWORD PTR [rbp-8], rax
jmp L2
L3:
mov rax, QWORD PTR [rbp-8]
lea rdx, [rax+1]
mov QWORD PTR [rbp-8], rdx
mov edx, DWORD PTR [rbp-28]
mov BYTE PTR [rax], dl
L2:
mov rax, QWORD PTR [rbp-40]
lea rdx, [rax-1]
mov QWORD PTR [rbp-40], rdx
test rax, rax
jne L3
mov rax, QWORD PTR [rbp-24]
pop rbp
ret
memcpyOwn:
push rbp
mov rbp, rsp
mov QWORD PTR [rbp-24], rdi
mov QWORD PTR [rbp-32], rsi
mov QWORD PTR [rbp-40], rdx
mov rax, QWORD PTR [rbp-24]
mov QWORD PTR [rbp-8], rax
mov rax, QWORD PTR [rbp-32]
mov QWORD PTR [rbp-16], rax
jmp L6
L7:
mov rdx, QWORD PTR [rbp-16]
lea rax, [rdx+1]
mov QWORD PTR [rbp-16], rax
mov rax, QWORD PTR [rbp-8]
lea rcx, [rax+1]
mov QWORD PTR [rbp-8], rcx
movzx edx, BYTE PTR [rdx]
mov BYTE PTR [rax], dl
L6:
mov rax, QWORD PTR [rbp-40]
lea rdx, [rax-1]
mov QWORD PTR [rbp-40], rdx
test rax, rax
jne L7
mov rax, QWORD PTR [rbp-24]
pop rbp
ret
right_rot:
push rbp
mov rbp, rsp
mov DWORD PTR [rbp-4], edi
mov DWORD PTR [rbp-8], esi
mov eax, DWORD PTR [rbp-8]
mov edx, DWORD PTR [rbp-4]
mov ecx, eax
ror edx, cl
mov eax, edx
pop rbp
ret
init_buf_state:
push rbp
mov rbp, rsp
mov QWORD PTR [rbp-8], rdi
mov QWORD PTR [rbp-16], rsi
mov QWORD PTR [rbp-24], rdx
mov rax, QWORD PTR [rbp-8]
mov rdx, QWORD PTR [rbp-16]
mov QWORD PTR [rax], rdx
mov rax, QWORD PTR [rbp-8]
mov rdx, QWORD PTR [rbp-24]
mov QWORD PTR [rax+8], rdx
mov rax, QWORD PTR [rbp-8]
mov rdx, QWORD PTR [rbp-24]
mov QWORD PTR [rax+16], rdx
mov rax, QWORD PTR [rbp-8]
mov DWORD PTR [rax+24], 0
mov rax, QWORD PTR [rbp-8]
mov DWORD PTR [rax+28], 0
nop
pop rbp
ret
calc_chunk:
push rbp
mov rbp, rsp
sub rsp, 48
mov QWORD PTR [rbp-40], rdi
mov QWORD PTR [rbp-48], rsi
mov rax, QWORD PTR [rbp-48]
mov eax, DWORD PTR [rax+28]
test eax, eax
je L13
mov eax, 0
jmp L14
L13:
mov rax, QWORD PTR [rbp-48]
mov rax, QWORD PTR [rax+8]
cmp rax, 63
jbe L15
mov rax, QWORD PTR [rbp-48]
mov rcx, QWORD PTR [rax]
mov rax, QWORD PTR [rbp-40]
mov edx, 64
mov rsi, rcx
mov rdi, rax
call memcpyOwn
mov rax, QWORD PTR [rbp-48]
mov rax, QWORD PTR [rax]
lea rdx, [rax+64]
mov rax, QWORD PTR [rbp-48]
mov QWORD PTR [rax], rdx
mov rax, QWORD PTR [rbp-48]
mov rax, QWORD PTR [rax+8]
lea rdx, [rax-64]
mov rax, QWORD PTR [rbp-48]
mov QWORD PTR [rax+8], rdx
mov eax, 1
jmp L14
L15:
mov rax, QWORD PTR [rbp-48]
mov rdx, QWORD PTR [rax+8]
mov rax, QWORD PTR [rbp-48]
mov rcx, QWORD PTR [rax]
mov rax, QWORD PTR [rbp-40]
mov rsi, rcx
mov rdi, rax
call memcpyOwn
mov rax, QWORD PTR [rbp-48]
mov rax, QWORD PTR [rax+8]
add QWORD PTR [rbp-40], rax
mov rax, QWORD PTR [rbp-48]
mov rdx, QWORD PTR [rax+8]
mov eax, 64
sub rax, rdx
mov QWORD PTR [rbp-8], rax
mov rax, QWORD PTR [rbp-48]
mov rdx, QWORD PTR [rax]
mov rax, QWORD PTR [rbp-48]
mov rax, QWORD PTR [rax+8]
add rdx, rax
mov rax, QWORD PTR [rbp-48]
mov QWORD PTR [rax], rdx
mov rax, QWORD PTR [rbp-48]
mov QWORD PTR [rax+8], 0
mov rax, QWORD PTR [rbp-48]
mov eax, DWORD PTR [rax+24]
test eax, eax
jne L16
mov rax, QWORD PTR [rbp-40]
lea rdx, [rax+1]
mov QWORD PTR [rbp-40], rdx
mov BYTE PTR [rax], -128
sub QWORD PTR [rbp-8], 1
mov rax, QWORD PTR [rbp-48]
mov DWORD PTR [rax+24], 1
L16:
cmp QWORD PTR [rbp-8], 7
jbe L17
mov rax, QWORD PTR [rbp-8]
sub rax, 8
mov QWORD PTR [rbp-16], rax
mov rax, QWORD PTR [rbp-48]
mov rax, QWORD PTR [rax+16]
sal rax, 3
mov QWORD PTR [rbp-24], rax
mov rdx, QWORD PTR [rbp-16]
mov rax, QWORD PTR [rbp-40]
mov esi, 0
mov rdi, rax
call memsetOur
mov rax, QWORD PTR [rbp-16]
add QWORD PTR [rbp-40], rax
mov rax, QWORD PTR [rbp-24]
shr rax, 56
mov edx, eax
mov rax, QWORD PTR [rbp-40]
mov BYTE PTR [rax], dl
mov rax, QWORD PTR [rbp-24]
shr rax, 48
mov rdx, rax
mov rax, QWORD PTR [rbp-40]
add rax, 1
mov BYTE PTR [rax], dl
mov rax, QWORD PTR [rbp-24]
shr rax, 40
mov rdx, rax
mov rax, QWORD PTR [rbp-40]
add rax, 2
mov BYTE PTR [rax], dl
mov rax, QWORD PTR [rbp-24]
shr rax, 32
mov rdx, rax
mov rax, QWORD PTR [rbp-40]
add rax, 3
mov BYTE PTR [rax], dl
mov rax, QWORD PTR [rbp-24]
shr rax, 24
mov rdx, rax
mov rax, QWORD PTR [rbp-40]
add rax, 4
mov BYTE PTR [rax], dl
mov rax, QWORD PTR [rbp-24]
shr rax, 16
mov rdx, rax
mov rax, QWORD PTR [rbp-40]
add rax, 5
mov BYTE PTR [rax], dl
mov rax, QWORD PTR [rbp-24]
shr rax, 8
mov rdx, rax
mov rax, QWORD PTR [rbp-40]
add rax, 6
mov BYTE PTR [rax], dl
mov rax, QWORD PTR [rbp-40]
add rax, 7
mov rdx, QWORD PTR [rbp-24]
mov BYTE PTR [rax], dl
mov rax, QWORD PTR [rbp-48]
mov DWORD PTR [rax+28], 1
jmp L18
L17:
mov rdx, QWORD PTR [rbp-8]
mov rax, QWORD PTR [rbp-40]
mov esi, 0
mov rdi, rax
call memsetOur
L18:
mov eax, 1
L14:
leave
ret
calc_sha_256:
push rbp
mov rbp, rsp
push rbx
sub rsp, 504
mov QWORD PTR [rbp-488], rdi
mov QWORD PTR [rbp-496], rsi
mov QWORD PTR [rbp-504], rdx
mov DWORD PTR [rbp-20], 1779033703
mov DWORD PTR [rbp-24], -1150833019
mov DWORD PTR [rbp-28], 1013904242
mov DWORD PTR [rbp-32], -1521486534
mov DWORD PTR [rbp-36], 1359893119
mov DWORD PTR [rbp-40], -1694144372
mov DWORD PTR [rbp-44], 528734635
mov DWORD PTR [rbp-48], 1541459225
mov rdx, QWORD PTR [rbp-504]
mov rcx, QWORD PTR [rbp-496]
lea rax, [rbp-224]
mov rsi, rcx
mov rdi, rax
call init_buf_state
jmp L20
L27:
lea rax, [rbp-192]
mov QWORD PTR [rbp-88], rax
lea rax, [rbp-480]
mov edx, 256
mov esi, 0
mov rdi, rax
call memsetOur
mov DWORD PTR [rbp-92], 0
jmp L21
L22:
mov rax, QWORD PTR [rbp-88]
movzx eax, BYTE PTR [rax]
movzx eax, al
sal eax, 24
mov edx, eax
mov rax, QWORD PTR [rbp-88]
add rax, 1
movzx eax, BYTE PTR [rax]
movzx eax, al
sal eax, 16
or edx, eax
mov rax, QWORD PTR [rbp-88]
add rax, 2
movzx eax, BYTE PTR [rax]
movzx eax, al
sal eax, 8
or edx, eax
mov rax, QWORD PTR [rbp-88]
add rax, 3
movzx eax, BYTE PTR [rax]
movzx eax, al
or edx, eax
mov eax, DWORD PTR [rbp-92]
cdqe
mov DWORD PTR [rbp-480+rax*4], edx
add QWORD PTR [rbp-88], 4
add DWORD PTR [rbp-92], 1
L21:
cmp DWORD PTR [rbp-92], 15
jle L22
mov DWORD PTR [rbp-92], 16
jmp L23
L24:
mov eax, DWORD PTR [rbp-92]
sub eax, 15
cdqe
mov eax, DWORD PTR [rbp-480+rax*4]
mov esi, 7
mov edi, eax
call right_rot
mov ebx, eax
mov eax, DWORD PTR [rbp-92]
sub eax, 15
cdqe
mov eax, DWORD PTR [rbp-480+rax*4]
mov esi, 18
mov edi, eax
call right_rot
xor ebx, eax
mov edx, ebx
mov eax, DWORD PTR [rbp-92]
sub eax, 15
cdqe
mov eax, DWORD PTR [rbp-480+rax*4]
shr eax, 3
xor eax, edx
mov DWORD PTR [rbp-120], eax
mov eax, DWORD PTR [rbp-92]
sub eax, 2
cdqe
mov eax, DWORD PTR [rbp-480+rax*4]
mov esi, 17
mov edi, eax
call right_rot
mov ebx, eax
mov eax, DWORD PTR [rbp-92]
sub eax, 2
cdqe
mov eax, DWORD PTR [rbp-480+rax*4]
mov esi, 19
mov edi, eax
call right_rot
xor ebx, eax
mov edx, ebx
mov eax, DWORD PTR [rbp-92]
sub eax, 2
cdqe
mov eax, DWORD PTR [rbp-480+rax*4]
shr eax, 10
xor eax, edx
mov DWORD PTR [rbp-124], eax
mov eax, DWORD PTR [rbp-92]
sub eax, 16
cdqe
mov edx, DWORD PTR [rbp-480+rax*4]
mov eax, DWORD PTR [rbp-120]
add edx, eax
mov eax, DWORD PTR [rbp-92]
sub eax, 7
cdqe
mov eax, DWORD PTR [rbp-480+rax*4]
add edx, eax
mov eax, DWORD PTR [rbp-124]
add edx, eax
mov eax, DWORD PTR [rbp-92]
cdqe
mov DWORD PTR [rbp-480+rax*4], edx
add DWORD PTR [rbp-92], 1
L23:
cmp DWORD PTR [rbp-92], 63
jle L24
mov eax, DWORD PTR [rbp-20]
mov DWORD PTR [rbp-52], eax
mov eax, DWORD PTR [rbp-24]
mov DWORD PTR [rbp-56], eax
mov eax, DWORD PTR [rbp-28]
mov DWORD PTR [rbp-60], eax
mov eax, DWORD PTR [rbp-32]
mov DWORD PTR [rbp-64], eax
mov eax, DWORD PTR [rbp-36]
mov DWORD PTR [rbp-68], eax
mov eax, DWORD PTR [rbp-40]
mov DWORD PTR [rbp-72], eax
mov eax, DWORD PTR [rbp-44]
mov DWORD PTR [rbp-76], eax
mov eax, DWORD PTR [rbp-48]
mov DWORD PTR [rbp-80], eax
mov DWORD PTR [rbp-92], 0
jmp L25
L26:
mov eax, DWORD PTR [rbp-68]
mov esi, 6
mov edi, eax
call right_rot
mov ebx, eax
mov eax, DWORD PTR [rbp-68]
mov esi, 11
mov edi, eax
call right_rot
xor ebx, eax
mov eax, DWORD PTR [rbp-68]
mov esi, 25
mov edi, eax
call right_rot
xor eax, ebx
mov DWORD PTR [rbp-96], eax
mov eax, DWORD PTR [rbp-68]
and eax, DWORD PTR [rbp-72]
mov edx, eax
mov eax, DWORD PTR [rbp-68]
not eax
and eax, DWORD PTR [rbp-76]
xor eax, edx
mov DWORD PTR [rbp-100], eax
mov edx, DWORD PTR [rbp-80]
mov eax, DWORD PTR [rbp-96]
add edx, eax
mov eax, DWORD PTR [rbp-100]
add edx, eax
mov eax, DWORD PTR [rbp-92]
cdqe
mov eax, DWORD PTR k[0+rax*4]
add edx, eax
mov eax, DWORD PTR [rbp-92]
cdqe
mov eax, DWORD PTR [rbp-480+rax*4]
add eax, edx
mov DWORD PTR [rbp-104], eax
mov eax, DWORD PTR [rbp-52]
mov esi, 2
mov edi, eax
call right_rot
mov ebx, eax
mov eax, DWORD PTR [rbp-52]
mov esi, 13
mov edi, eax
call right_rot
xor ebx, eax
mov eax, DWORD PTR [rbp-52]
mov esi, 22
mov edi, eax
call right_rot
xor eax, ebx
mov DWORD PTR [rbp-108], eax
mov eax, DWORD PTR [rbp-56]
xor eax, DWORD PTR [rbp-60]
and eax, DWORD PTR [rbp-52]
mov edx, eax
mov eax, DWORD PTR [rbp-56]
and eax, DWORD PTR [rbp-60]
xor eax, edx
mov DWORD PTR [rbp-112], eax
mov edx, DWORD PTR [rbp-108]
mov eax, DWORD PTR [rbp-112]
add eax, edx
mov DWORD PTR [rbp-116], eax
mov eax, DWORD PTR [rbp-76]
mov DWORD PTR [rbp-80], eax
mov eax, DWORD PTR [rbp-72]
mov DWORD PTR [rbp-76], eax
mov eax, DWORD PTR [rbp-68]
mov DWORD PTR [rbp-72], eax
mov edx, DWORD PTR [rbp-64]
mov eax, DWORD PTR [rbp-104]
add eax, edx
mov DWORD PTR [rbp-68], eax
mov eax, DWORD PTR [rbp-60]
mov DWORD PTR [rbp-64], eax
mov eax, DWORD PTR [rbp-56]
mov DWORD PTR [rbp-60], eax
mov eax, DWORD PTR [rbp-52]
mov DWORD PTR [rbp-56], eax
mov edx, DWORD PTR [rbp-104]
mov eax, DWORD PTR [rbp-116]
add eax, edx
mov DWORD PTR [rbp-52], eax
add DWORD PTR [rbp-92], 1
L25:
cmp DWORD PTR [rbp-92], 63
jle L26
mov eax, DWORD PTR [rbp-52]
add DWORD PTR [rbp-20], eax
mov eax, DWORD PTR [rbp-56]
add DWORD PTR [rbp-24], eax
mov eax, DWORD PTR [rbp-60]
add DWORD PTR [rbp-28], eax
mov eax, DWORD PTR [rbp-64]
add DWORD PTR [rbp-32], eax
mov eax, DWORD PTR [rbp-68]
add DWORD PTR [rbp-36], eax
mov eax, DWORD PTR [rbp-72]
add DWORD PTR [rbp-40], eax
mov eax, DWORD PTR [rbp-76]
add DWORD PTR [rbp-44], eax
mov eax, DWORD PTR [rbp-80]
add DWORD PTR [rbp-48], eax
L20:
lea rdx, [rbp-224]
lea rax, [rbp-192]
mov rsi, rdx
mov rdi, rax
call calc_chunk
test eax, eax
jne L27
mov eax, DWORD PTR [rbp-20]
shr eax, 24
mov edx, eax
mov rax, QWORD PTR [rbp-488]
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-20]
shr eax, 16
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 1
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-20]
shr eax, 8
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 2
mov BYTE PTR [rax], dl
mov rax, QWORD PTR [rbp-488]
add rax, 3
mov edx, DWORD PTR [rbp-20]
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-24]
shr eax, 24
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 4
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-24]
shr eax, 16
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 5
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-24]
shr eax, 8
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 6
mov BYTE PTR [rax], dl
mov rax, QWORD PTR [rbp-488]
add rax, 7
mov edx, DWORD PTR [rbp-24]
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-28]
shr eax, 24
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 8
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-28]
shr eax, 16
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 9
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-28]
shr eax, 8
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 10
mov BYTE PTR [rax], dl
mov rax, QWORD PTR [rbp-488]
add rax, 11
mov edx, DWORD PTR [rbp-28]
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-32]
shr eax, 24
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 12
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-32]
shr eax, 16
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 13
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-32]
shr eax, 8
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 14
mov BYTE PTR [rax], dl
mov rax, QWORD PTR [rbp-488]
add rax, 15
mov edx, DWORD PTR [rbp-32]
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-36]
shr eax, 24
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 16
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-36]
shr eax, 16
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 17
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-36]
shr eax, 8
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 18
mov BYTE PTR [rax], dl
mov rax, QWORD PTR [rbp-488]
add rax, 19
mov edx, DWORD PTR [rbp-36]
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-40]
shr eax, 24
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 20
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-40]
shr eax, 16
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 21
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-40]
shr eax, 8
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 22
mov BYTE PTR [rax], dl
mov rax, QWORD PTR [rbp-488]
add rax, 23
mov edx, DWORD PTR [rbp-40]
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-44]
shr eax, 24
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 24
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-44]
shr eax, 16
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 25
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-44]
shr eax, 8
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 26
mov BYTE PTR [rax], dl
mov rax, QWORD PTR [rbp-488]
add rax, 27
mov edx, DWORD PTR [rbp-44]
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-48]
shr eax, 24
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 28
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-48]
shr eax, 16
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 29
mov BYTE PTR [rax], dl
mov eax, DWORD PTR [rbp-48]
shr eax, 8
mov edx, eax
mov rax, QWORD PTR [rbp-488]
add rax, 30
mov BYTE PTR [rax], dl
mov rax, QWORD PTR [rbp-488]
add rax, 31
mov edx, DWORD PTR [rbp-48]
mov BYTE PTR [rax], dl
nop
mov rbx, QWORD PTR [rbp-8]
leave
ret
sha256 endp
end
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
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