From aeeae06a79815dc190061534d47236cec09f9e32 Mon Sep 17 00:00:00 2001
From: ryker <>
Date: Mon, 5 Oct 1998 20:13:14 +0000
Subject: Import of SSLeay-0.9.0b with RSA and IDEA stubbed + OpenBSD build
 functionality for shared libs.

Note that routines such as sslv2_init and friends that use RSA will
not work due to lack of RSA in this library.

Needs documentation and help from ports for easy upgrade to full
functionality where legally possible.
---
 src/lib/libcrypto/bf/asm/bf-586.pl | 136 +++++++++++++++++++++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 src/lib/libcrypto/bf/asm/bf-586.pl

(limited to 'src/lib/libcrypto/bf/asm')

diff --git a/src/lib/libcrypto/bf/asm/bf-586.pl b/src/lib/libcrypto/bf/asm/bf-586.pl
new file mode 100644
index 0000000000..5c7ab14ab0
--- /dev/null
+++ b/src/lib/libcrypto/bf/asm/bf-586.pl
@@ -0,0 +1,136 @@
+#!/usr/bin/perl
+
+push(@INC,"perlasm","../../perlasm");
+require "x86asm.pl";
+require "cbc.pl";
+
+&asm_init($ARGV[0],"bf-586.pl");
+
+$BF_ROUNDS=16;
+$BF_OFF=($BF_ROUNDS+2)*4;
+$L="edi";
+$R="esi";
+$P="ebp";
+$tmp1="eax";
+$tmp2="ebx";
+$tmp3="ecx";
+$tmp4="edx";
+
+&BF_encrypt("BF_encrypt",1);
+&BF_encrypt("BF_decrypt",0);
+&cbc("BF_cbc_encrypt","BF_encrypt","BF_decrypt",1,4,5,3,-1,-1);
+&asm_finish();
+
+sub BF_encrypt
+	{
+	local($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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