WinAsm Studio, The Assembly IDE - Free Downloads, Source Code

Home

Forum

Downloads

Link To Us

Programming Tools

Articles

Programming Quick Start

32-bit Assembler is Easy

Porting Iczelion tutorials

What is FASM

Hard Drive Recovery

Wiring your own LAN

Forum

Home

Forum

Assembly Programming

Main

Pages (3) [1] 2 3 ( Go to first unread post )

byte encoding to base 64

Track this topic | Email this topic | Print this topic

Wessol

Member

Group: Members
Posts: 32
Member No.: 51593
Joined: 16-May 12

heyz

is it possible to encode a array of bytes into base 64 ascii string, in masm?

i read about the CryptBinaryToString win32api but after execute the buffer is empty.
can anybody help me ?

CODE

includelib Crypt32.lib
include Crypt32.inc

.data
myArray db 0Ch, 0Ch, 0Ch, 0Fh, 0Ah

.data?
myBuffer dd 20 dup(?); large enough
tcharBuf dd 20 dup (?)

.code
invoke lstrlen, offset myArray
invoke CryptBinaryToString, Addr myArray, eax, CRYPT_STRING_BASE64, Addr myBuffer, Addr tcharBuf

Sponsored Links

huntingspace

Active Member

Group: Members
Posts: 49
Member No.: 49504
Joined: 11-February 12

try this:

CODE

includelib Crypt32.lib
include Crypt32.inc

CRYPT_STRING_NOCRLF equ 40000000h

.data
myArray db 0Ch, 0Ch, 0Ch, 0Fh, 0Ah
myBuffer dd 20 dup(0); large enough
tcharBuf dd $-myBuffer

.code
invoke CryptBinaryToString, Addr myArray, sizeof myArray,CRYPT_STRING_BASE64+CRYPT_STRING_NOCRLF, Addr myBuffer, Addr tcharBuf


Wessol
Member Group: Members Posts: 32 Member No.: 51593 Joined: 16-May 12	gracias sir it seems like its working do you know how to swap a whole dword? example eax = 12345678 eax should be reversed to = 87654321 any thing to solve this?


Slider
Extremely Active Member Group: Moderators Posts: 313 Member No.: 5004 Joined: 11-May 07	BSWAP - Byte Swap Code Mnemonic Description 0F C8+ rd BSWAP r32 Reverses the byte order of a 32-bit register. Description Reverses the byte order of a 32-bit (destination) register: bits 0 through 7 are swapped with bits 24 through 31, and bits 8 through 15 are swapped with bits 16 through 23. This instruction is provided for converting little-endian values to big-endian format and vice versa.


Wessol
Member Group: Members Posts: 32 Member No.: 51593 Joined: 16-May 12	thx slider but bwap swap only byte per byte is there a function that swap a whole dword at onnce?

1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)

0 Members:

« Next Oldest | Main | Next Newest »

Pages (3) [1] 2 3