From aa4d426b4d3527d7e166df1a05058c9a4a0f6683 Mon Sep 17 00:00:00 2001
From: Wojtek Kosior <wk@koszkonutek-tmp.pl.eu.org>
Date: Fri, 30 Apr 2021 00:33:56 +0200
Subject: initial/final commit

---
 openssl-1.1.0h/crypto/bf/asm/bf-586.pl | 149 +++++++++++++++++++++++++++++++++
 1 file changed, 149 insertions(+)
 create mode 100644 openssl-1.1.0h/crypto/bf/asm/bf-586.pl

(limited to 'openssl-1.1.0h/crypto/bf/asm/bf-586.pl')

diff --git a/openssl-1.1.0h/crypto/bf/asm/bf-586.pl b/openssl-1.1.0h/crypto/bf/asm/bf-586.pl
new file mode 100644
index 0000000..ebc24f4
--- /dev/null
+++ b/openssl-1.1.0h/crypto/bf/asm/bf-586.pl
@@ -0,0 +1,149 @@
+#! /usr/bin/env perl
+# Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+#
+# Licensed under the OpenSSL license (the "License").  You may not use
+# this file except in compliance with the License.  You can obtain a copy
+# in the file LICENSE in the source distribution or at
+# https://www.openssl.org/source/license.html
+
+
+$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
+push(@INC,"${dir}","${dir}../../perlasm");
+require "x86asm.pl";
+require "cbc.pl";
+
+$output = pop;
+open STDOUT,">$output";
+
+&asm_init($ARGV[0],"bf-586.pl",$ARGV[$#ARGV] eq "386");
+
+$BF_ROUNDS=16;
+$BF_OFF=($BF_ROUNDS+2)*4;
+$L="edi";
+$R="esi";
+$P="ebp";
+$tmp1="eax";
+$tmp2="ebx";
+$tmp3="ecx";
+$tmp4="edx";
+
+&BF_encrypt("BF_encrypt",1);
+&BF_encrypt("BF_decrypt",0);
+&cbc("BF_cbc_encrypt","BF_encrypt","BF_decrypt",1,4,5,3,-1,-1);
+&asm_finish();
+
+close STDOUT;
+
+sub BF_encrypt
+	{
+	local($name,$enc)=@_;
+
+	&function_begin_B($name,"");
+
+	&comment("");
+
+	&push("ebp");
+	&push("ebx");
+	&mov($tmp2,&wparam(0));
+	&mov($P,&wparam(1));
+	&push("esi");
+	&push("edi");
+
+	&comment("Load the 2 words");
+	&mov($L,&DWP(0,$tmp2,"",0));
+	&mov($R,&DWP(4,$tmp2,"",0));
+
+	&xor(	$tmp1,	$tmp1);
+
+	# encrypting part
+
+	if ($enc)
+		{
+		 &mov($tmp2,&DWP(0,$P,"",0));
+		&xor(	$tmp3,	$tmp3);
+
+		&xor($L,$tmp2);
+		for ($i=0; $i<$BF_ROUNDS; $i+=2)
+			{
+			&comment("");
+			&comment("Round $i");
+			&BF_ENCRYPT($i+1,$R,$L,$P,$tmp1,$tmp2,$tmp3,$tmp4,1);
+
+			&comment("");
+			&comment("Round ".sprintf("%d",$i+1));
+			&BF_ENCRYPT($i+2,$L,$R,$P,$tmp1,$tmp2,$tmp3,$tmp4,1);
+			}
+		# &mov($tmp1,&wparam(0)); In last loop
+		&mov($tmp4,&DWP(($BF_ROUNDS+1)*4,$P,"",0));
+		}
+	else
+		{
+		 &mov($tmp2,&DWP(($BF_ROUNDS+1)*4,$P,"",0));
+		&xor(	$tmp3,	$tmp3);
+
+		&xor($L,$tmp2);
+		for ($i=$BF_ROUNDS; $i>0; $i-=2)
+			{
+			&comment("");
+			&comment("Round $i");
+			&BF_ENCRYPT($i,$R,$L,$P,$tmp1,$tmp2,$tmp3,$tmp4,0);
+			&comment("");
+			&comment("Round ".sprintf("%d",$i-1));
+			&BF_ENCRYPT($i-1,$L,$R,$P,$tmp1,$tmp2,$tmp3,$tmp4,0);
+			}
+		# &mov($tmp1,&wparam(0)); In last loop
+		&mov($tmp4,&DWP(0,$P,"",0));
+		}
+
+	&xor($R,$tmp4);
+	&mov(&DWP(4,$tmp1,"",0),$L);
+
+	&mov(&DWP(0,$tmp1,"",0),$R);
+	&function_end($name);
+	}
+
+sub BF_ENCRYPT
+	{
+	local($i,$L,$R,$P,$tmp1,$tmp2,$tmp3,$tmp4,$enc)=@_;
+
+	&mov(	$tmp4,		&DWP(&n2a($i*4),$P,"",0)); # for next round
+
+	&mov(	$tmp2,		$R);
+	&xor(	$L,		$tmp4);
+
+	&shr(	$tmp2,		16);
+	&mov(	$tmp4,		$R);
+
+	&movb(	&LB($tmp1),	&HB($tmp2));	# A
+	&and(	$tmp2,		0xff);		# B
+
+	&movb(	&LB($tmp3),	&HB($tmp4));	# C
+	&and(	$tmp4,		0xff);		# D
+
+	&mov(	$tmp1,		&DWP(&n2a($BF_OFF+0x0000),$P,$tmp1,4));
+	&mov(	$tmp2,		&DWP(&n2a($BF_OFF+0x0400),$P,$tmp2,4));
+
+	&add(	$tmp2,		$tmp1);
+	&mov(	$tmp1,		&DWP(&n2a($BF_OFF+0x0800),$P,$tmp3,4));
+
+	&xor(	$tmp2,		$tmp1);
+	&mov(	$tmp4,		&DWP(&n2a($BF_OFF+0x0C00),$P,$tmp4,4));
+
+	&add(	$tmp2,		$tmp4);
+	if (($enc && ($i != 16)) || ((!$enc) && ($i != 1)))
+		{ &xor(	$tmp1,		$tmp1); }
+	else
+		{
+		&comment("Load parameter 0 ($i) enc=$enc");
+		&mov($tmp1,&wparam(0));
+		} # In last loop
+
+	&xor(	$L,		$tmp2);
+	# delay
+	}
+
+sub n2a
+	{
+	sprintf("%d",$_[0]);
+	}
+
-- 
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