.file "arcfour-crypt.asm"

	
	
	
	.text
	.align 4
.globl nettle_arcfour_crypt
nettle_arcfour_crypt:
	
	pushl	%ebx		
	pushl	%ebp		
	pushl	%esi		
	pushl	%edi		


	
	
	
	

	
	
	
	
	
	
	
	

	movl	24(%esp), %edx		
	testl	%edx,%edx
	jz	.Lend

	movl	20(%esp), %ebp		
	movl	28(%esp), %edi
	movl	32(%esp), %esi
	addl	%esi, %edx		
	
	movzbl  256 (%ebp), %eax	
	movzbl  257 (%ebp), %ebx	
.Lloop:

	incl	%eax
	andl	$0xff, %eax
	movzbl  (%ebp, %eax), %ecx	
	addb    %cl, %bl



	movb    (%ebp, %ebx), %ch	
	movb    %ch, (%ebp, %eax)	
	movb	%cl, (%ebp, %ebx)	
	addb    %ch, %cl
	movzbl  %cl, %ecx		
					
	movb    (%ebp, %ecx), %cl
	xorb    (%esi), %cl
	incl    %esi
	movb    %cl, (%edi)
	incl    %edi
	cmpl	%esi, %edx
	jne	.Lloop

	movb	%al, 256 (%ebp)		
	movb	%bl, 257 (%ebp)
.Lend:
	popl	%edi
	popl	%esi
	popl	%ebp
	popl	%ebx
	ret