Initial import

1 files changed, 349 insertions, 0 deletions

diff --git a/openssl/crypto/perlasm/cbc.pl b/openssl/crypto/perlasm/cbc.pl
new file mode 100644
index 00000000..6fc25109
--- /dev/null
+++ b/openssl/crypto/perlasm/cbc.pl
@@ -0,0 +1,349 @@
+#!/usr/local/bin/perl
+
+# void des_ncbc_encrypt(input, output, length, schedule, ivec, enc)
+# des_cblock (*input);
+# des_cblock (*output);
+# long length;
+# des_key_schedule schedule;
+# des_cblock (*ivec);
+# int enc;
+#
+# calls 
+# des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
+#
+
+#&cbc("des_ncbc_encrypt","des_encrypt",0);
+#&cbc("BF_cbc_encrypt","BF_encrypt","BF_encrypt",
+#	1,4,5,3,5,-1);
+#&cbc("des_ncbc_encrypt","des_encrypt","des_encrypt",
+#	0,4,5,3,5,-1);
+#&cbc("des_ede3_cbc_encrypt","des_encrypt3","des_decrypt3",
+#	0,6,7,3,4,5);
+#
+# When doing a cipher that needs bigendian order,
+# for encrypt, the iv is kept in bigendian form,
+# while for decrypt, it is kept in little endian.
+sub cbc
+	{
+	local($name,$enc_func,$dec_func,$swap,$iv_off,$enc_off,$p1,$p2,$p3)=@_;
+	# name is the function name
+	# enc_func and dec_func and the functions to call for encrypt/decrypt
+	# swap is true if byte order needs to be reversed
+	# iv_off is parameter number for the iv 
+	# enc_off is parameter number for the encrypt/decrypt flag
+	# p1,p2,p3 are the offsets for parameters to be passed to the
+	# underlying calls.
+
+	&function_begin_B($name,"");
+	&comment("");
+
+	$in="esi";
+	$out="edi";
+	$count="ebp";
+
+	&push("ebp");
+	&push("ebx");
+	&push("esi");
+	&push("edi");
+
+	$data_off=4;
+	$data_off+=4 if ($p1 > 0);
+	$data_off+=4 if ($p2 > 0);
+	$data_off+=4 if ($p3 > 0);
+
+	&mov($count,	&wparam(2));	# length
+
+	&comment("getting iv ptr from parameter $iv_off");
+	&mov("ebx",	&wparam($iv_off));	# Get iv ptr
+
+	&mov($in,	&DWP(0,"ebx","",0));#	iv[0]
+	&mov($out,	&DWP(4,"ebx","",0));#	iv[1]
+
+	&push($out);
+	&push($in);
+	&push($out);	# used in decrypt for iv[1]
+	&push($in);	# used in decrypt for iv[0]
+
+	&mov("ebx",	"esp");		# This is the address of tin[2]
+
+	&mov($in,	&wparam(0));	# in
+	&mov($out,	&wparam(1));	# out
+
+	# We have loaded them all, how lets push things
+	&comment("getting encrypt flag from parameter $enc_off");
+	&mov("ecx",	&wparam($enc_off));	# Get enc flag
+	if ($p3 > 0)
+		{
+		&comment("get and push parameter $p3");
+		if ($enc_off != $p3)
+			{ &mov("eax",	&wparam($p3)); &push("eax"); }
+		else	{ &push("ecx"); }
+		}
+	if ($p2 > 0)
+		{
+		&comment("get and push parameter $p2");
+		if ($enc_off != $p2)
+			{ &mov("eax",	&wparam($p2)); &push("eax"); }
+		else	{ &push("ecx"); }
+		}
+	if ($p1 > 0)
+		{
+		&comment("get and push parameter $p1");
+		if ($enc_off != $p1)
+			{ &mov("eax",	&wparam($p1)); &push("eax"); }
+		else	{ &push("ecx"); }
+		}
+	&push("ebx");		# push data/iv
+
+	&cmp("ecx",0);
+	&jz(&label("decrypt"));
+
+	&and($count,0xfffffff8);
+	&mov("eax",	&DWP($data_off,"esp","",0));	# load iv[0]
+	&mov("ebx",	&DWP($data_off+4,"esp","",0));	# load iv[1]
+
+	&jz(&label("encrypt_finish"));
+
+	#############################################################
+
+	&set_label("encrypt_loop");
+	# encrypt start 
+	# "eax" and "ebx" hold iv (or the last cipher text)
+
+	&mov("ecx",	&DWP(0,$in,"",0));	# load first 4 bytes
+	&mov("edx",	&DWP(4,$in,"",0));	# second 4 bytes
+
+	&xor("eax",	"ecx");
+	&xor("ebx",	"edx");
+
+	&bswap("eax")	if $swap;
+	&bswap("ebx")	if $swap;
+
+	&mov(&DWP($data_off,"esp","",0),	"eax");	# put in array for call
+	&mov(&DWP($data_off+4,"esp","",0),	"ebx");	#
+
+	&call($enc_func);
+
+	&mov("eax",	&DWP($data_off,"esp","",0));
+	&mov("ebx",	&DWP($data_off+4,"esp","",0));
+
+	&bswap("eax")	if $swap;
+	&bswap("ebx")	if $swap;
+
+	&mov(&DWP(0,$out,"",0),"eax");
+	&mov(&DWP(4,$out,"",0),"ebx");
+
+	# eax and ebx are the next iv.
+
+	&add($in,	8);
+	&add($out,	8);
+
+	&sub($count,	8);
+	&jnz(&label("encrypt_loop"));
+
+###################################################################3
+	&set_label("encrypt_finish");
+	&mov($count,	&wparam(2));	# length
+	&and($count,	7);
+	&jz(&label("finish"));
+	&call(&label("PIC_point"));
+&set_label("PIC_point");
+	&blindpop("edx");
+	&lea("ecx",&DWP(&label("cbc_enc_jmp_table")."-".&label("PIC_point"),"edx"));
+	&mov($count,&DWP(0,"ecx",$count,4))
+	&add($count,"edx");
+	&xor("ecx","ecx");
+	&xor("edx","edx");
+	#&mov($count,&DWP(&label("cbc_enc_jmp_table"),"",$count,4));
+	&jmp_ptr($count);
+
+&set_label("ej7");
+	&movb(&HB("edx"),	&BP(6,$in,"",0));
+	&shl("edx",8);
+&set_label("ej6");
+	&movb(&HB("edx"),	&BP(5,$in,"",0));
+&set_label("ej5");
+	&movb(&LB("edx"),	&BP(4,$in,"",0));
+&set_label("ej4");
+	&mov("ecx",		&DWP(0,$in,"",0));
+	&jmp(&label("ejend"));
+&set_label("ej3");
+	&movb(&HB("ecx"),	&BP(2,$in,"",0));
+	&shl("ecx",8);
+&set_label("ej2");
+	&movb(&HB("ecx"),	&BP(1,$in,"",0));
+&set_label("ej1");
+	&movb(&LB("ecx"),	&BP(0,$in,"",0));
+&set_label("ejend");
+
+	&xor("eax",	"ecx");
+	&xor("ebx",	"edx");
+
+	&bswap("eax")	if $swap;
+	&bswap("ebx")	if $swap;
+
+	&mov(&DWP($data_off,"esp","",0),	"eax");	# put in array for call
+	&mov(&DWP($data_off+4,"esp","",0),	"ebx");	#
+
+	&call($enc_func);
+
+	&mov("eax",	&DWP($data_off,"esp","",0));
+	&mov("ebx",	&DWP($data_off+4,"esp","",0));
+
+	&bswap("eax")	if $swap;
+	&bswap("ebx")	if $swap;
+
+	&mov(&DWP(0,$out,"",0),"eax");
+	&mov(&DWP(4,$out,"",0),"ebx");
+
+	&jmp(&label("finish"));
+
+	#############################################################
+	#############################################################
+	&set_label("decrypt",1);
+	# decrypt start 
+	&and($count,0xfffffff8);
+	# The next 2 instructions are only for if the jz is taken
+	&mov("eax",	&DWP($data_off+8,"esp","",0));	# get iv[0]
+	&mov("ebx",	&DWP($data_off+12,"esp","",0));	# get iv[1]
+	&jz(&label("decrypt_finish"));
+
+	&set_label("decrypt_loop");
+	&mov("eax",	&DWP(0,$in,"",0));	# load first 4 bytes
+	&mov("ebx",	&DWP(4,$in,"",0));	# second 4 bytes
+
+	&bswap("eax")	if $swap;
+	&bswap("ebx")	if $swap;
+
+	&mov(&DWP($data_off,"esp","",0),	"eax");	# put back
+	&mov(&DWP($data_off+4,"esp","",0),	"ebx");	#
+
+	&call($dec_func);
+
+	&mov("eax",	&DWP($data_off,"esp","",0));	# get return
+	&mov("ebx",	&DWP($data_off+4,"esp","",0));	#
+
+	&bswap("eax")	if $swap;
+	&bswap("ebx")	if $swap;
+
+	&mov("ecx",	&DWP($data_off+8,"esp","",0));	# get iv[0]
+	&mov("edx",	&DWP($data_off+12,"esp","",0));	# get iv[1]
+
+	&xor("ecx",	"eax");
+	&xor("edx",	"ebx");
+
+	&mov("eax",	&DWP(0,$in,"",0));	# get old cipher text,
+	&mov("ebx",	&DWP(4,$in,"",0));	# next iv actually
+
+	&mov(&DWP(0,$out,"",0),"ecx");
+	&mov(&DWP(4,$out,"",0),"edx");
+
+	&mov(&DWP($data_off+8,"esp","",0),	"eax");	# save iv
+	&mov(&DWP($data_off+12,"esp","",0),	"ebx");	#
+
+	&add($in,	8);
+	&add($out,	8);
+
+	&sub($count,	8);
+	&jnz(&label("decrypt_loop"));
+############################ ENDIT #######################3
+	&set_label("decrypt_finish");
+	&mov($count,	&wparam(2));	# length
+	&and($count,	7);
+	&jz(&label("finish"));
+
+	&mov("eax",	&DWP(0,$in,"",0));	# load first 4 bytes
+	&mov("ebx",	&DWP(4,$in,"",0));	# second 4 bytes
+
+	&bswap("eax")	if $swap;
+	&bswap("ebx")	if $swap;
+
+	&mov(&DWP($data_off,"esp","",0),	"eax");	# put back
+	&mov(&DWP($data_off+4,"esp","",0),	"ebx");	#
+
+	&call($dec_func);
+
+	&mov("eax",	&DWP($data_off,"esp","",0));	# get return
+	&mov("ebx",	&DWP($data_off+4,"esp","",0));	#
+
+	&bswap("eax")	if $swap;
+	&bswap("ebx")	if $swap;
+
+	&mov("ecx",	&DWP($data_off+8,"esp","",0));	# get iv[0]
+	&mov("edx",	&DWP($data_off+12,"esp","",0));	# get iv[1]
+
+	&xor("ecx",	"eax");
+	&xor("edx",	"ebx");
+
+	# this is for when we exit
+	&mov("eax",	&DWP(0,$in,"",0));	# get old cipher text,
+	&mov("ebx",	&DWP(4,$in,"",0));	# next iv actually
+
+&set_label("dj7");
+	&rotr("edx",	16);
+	&movb(&BP(6,$out,"",0),	&LB("edx"));
+	&shr("edx",16);
+&set_label("dj6");
+	&movb(&BP(5,$out,"",0),	&HB("edx"));
+&set_label("dj5");
+	&movb(&BP(4,$out,"",0),	&LB("edx"));
+&set_label("dj4");
+	&mov(&DWP(0,$out,"",0),	"ecx");
+	&jmp(&label("djend"));
+&set_label("dj3");
+	&rotr("ecx",	16);
+	&movb(&BP(2,$out,"",0),	&LB("ecx"));
+	&shl("ecx",16);
+&set_label("dj2");
+	&movb(&BP(1,$in,"",0),	&HB("ecx"));
+&set_label("dj1");
+	&movb(&BP(0,$in,"",0),	&LB("ecx"));
+&set_label("djend");
+
+	# final iv is still in eax:ebx
+	&jmp(&label("finish"));
+
+
+############################ FINISH #######################3
+	&set_label("finish",1);
+	&mov("ecx",	&wparam($iv_off));	# Get iv ptr
+
+	#################################################
+	$total=16+4;
+	$total+=4 if ($p1 > 0);
+	$total+=4 if ($p2 > 0);
+	$total+=4 if ($p3 > 0);
+	&add("esp",$total);
+
+	&mov(&DWP(0,"ecx","",0),	"eax");	# save iv
+	&mov(&DWP(4,"ecx","",0),	"ebx");	# save iv
+
+	&function_end_A($name);
+
+	&align(64);
+	&set_label("cbc_enc_jmp_table");
+	&data_word("0");
+	&data_word(&label("ej1")."-".&label("PIC_point"));
+	&data_word(&label("ej2")."-".&label("PIC_point"));
+	&data_word(&label("ej3")."-".&label("PIC_point"));
+	&data_word(&label("ej4")."-".&label("PIC_point"));
+	&data_word(&label("ej5")."-".&label("PIC_point"));
+	&data_word(&label("ej6")."-".&label("PIC_point"));
+	&data_word(&label("ej7")."-".&label("PIC_point"));
+	# not used
+	#&set_label("cbc_dec_jmp_table",1);
+	#&data_word("0");
+	#&data_word(&label("dj1")."-".&label("PIC_point"));
+	#&data_word(&label("dj2")."-".&label("PIC_point"));
+	#&data_word(&label("dj3")."-".&label("PIC_point"));
+	#&data_word(&label("dj4")."-".&label("PIC_point"));
+	#&data_word(&label("dj5")."-".&label("PIC_point"));
+	#&data_word(&label("dj6")."-".&label("PIC_point"));
+	#&data_word(&label("dj7")."-".&label("PIC_point"));
+	&align(64);
+
+	&function_end_B($name);
+	
+	}
+
+1;