Advertisement
Not a member of Pastebin yet?
Sign Up,
it unlocks many cool features!
- .data
- taps:
- .long 1
- .long 2
- .long 9
- .long 15
- .long 25
- .text
- .globl main
- main:
- movl 0x0831423, %eax
- call createKeystream
- ret
- createKeystream:
- movl $32, %edx g
- lfsr:
- movl $taps, %esi
- movl $5, %ecx # array size
- movl %eax, %ebx # seed -> temp
- xorl %edi, %edi # zero out index
- part1: cmpl %edi, %ecx
- je part2
- shrl (%esi,%edi,4), %ebx # temp >> taps[i] <-------- PROBLEM
- xorl %eax, %ebx # seed ^ temp > temp
- incl %edi
- jmp part1
- part2: andl $1, %ebx # temp &= 1
- shl $31, %ebx # temp << 31
- shr $1, %eax # seed >> 1
- or %ebx, %eax # temp | seed -> seed
- dec %edx
- jnz lfsr
- ret
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement