diff options
author | Parménides GV <parmegv@sdf.org> | 2014-04-09 16:03:55 +0200 |
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committer | Parménides GV <parmegv@sdf.org> | 2014-04-09 16:07:34 +0200 |
commit | 1684c8f398922065a97e7da4dac4ac6a33cc5218 (patch) | |
tree | 76a4b11ae0d7b217c088f3c2b8fc7e69a7b8ae0d /app/openssl/crypto/bf/asm/bf-686.pl | |
parent | b9a2b085a8f508cd09e2639c70be845c992c4a3e (diff) |
Back to the standard "app" module.
This return to "app" instead of "bitmask_android" is due to this reading: https://developer.android.com/sdk/installing/studio-build.html#projectStructure
I'll have to tweak the final apk name in build.gradle.
Diffstat (limited to 'app/openssl/crypto/bf/asm/bf-686.pl')
-rw-r--r-- | app/openssl/crypto/bf/asm/bf-686.pl | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/app/openssl/crypto/bf/asm/bf-686.pl b/app/openssl/crypto/bf/asm/bf-686.pl new file mode 100644 index 00000000..8e4c25f5 --- /dev/null +++ b/app/openssl/crypto/bf/asm/bf-686.pl @@ -0,0 +1,127 @@ +#!/usr/local/bin/perl + +push(@INC,"perlasm","../../perlasm"); +require "x86asm.pl"; +require "cbc.pl"; + +&asm_init($ARGV[0],"bf-686.pl"); + +$BF_ROUNDS=16; +$BF_OFF=($BF_ROUNDS+2)*4; +$L="ecx"; +$R="edx"; +$P="edi"; +$tot="esi"; +$tmp1="eax"; +$tmp2="ebx"; +$tmp3="ebp"; + +&des_encrypt("BF_encrypt",1); +&des_encrypt("BF_decrypt",0); +&cbc("BF_cbc_encrypt","BF_encrypt","BF_decrypt",1,4,5,3,-1,-1); + +&asm_finish(); + +&file_end(); + +sub des_encrypt + { + local($name,$enc)=@_; + + &function_begin($name,""); + + &comment(""); + &comment("Load the 2 words"); + &mov("eax",&wparam(0)); + &mov($L,&DWP(0,"eax","",0)); + &mov($R,&DWP(4,"eax","",0)); + + &comment(""); + &comment("P pointer, s and enc flag"); + &mov($P,&wparam(1)); + + &xor( $tmp1, $tmp1); + &xor( $tmp2, $tmp2); + + # encrypting part + + if ($enc) + { + &xor($L,&DWP(0,$P,"",0)); + for ($i=0; $i<$BF_ROUNDS; $i+=2) + { + &comment(""); + &comment("Round $i"); + &BF_ENCRYPT($i+1,$R,$L,$P,$tot,$tmp1,$tmp2,$tmp3); + + &comment(""); + &comment("Round ".sprintf("%d",$i+1)); + &BF_ENCRYPT($i+2,$L,$R,$P,$tot,$tmp1,$tmp2,$tmp3); + } + &xor($R,&DWP(($BF_ROUNDS+1)*4,$P,"",0)); + + &mov("eax",&wparam(0)); + &mov(&DWP(0,"eax","",0),$R); + &mov(&DWP(4,"eax","",0),$L); + &function_end_A($name); + } + else + { + &xor($L,&DWP(($BF_ROUNDS+1)*4,$P,"",0)); + for ($i=$BF_ROUNDS; $i>0; $i-=2) + { + &comment(""); + &comment("Round $i"); + &BF_ENCRYPT($i,$R,$L,$P,$tot,$tmp1,$tmp2,$tmp3); + &comment(""); + &comment("Round ".sprintf("%d",$i-1)); + &BF_ENCRYPT($i-1,$L,$R,$P,$tot,$tmp1,$tmp2,$tmp3); + } + &xor($R,&DWP(0,$P,"",0)); + + &mov("eax",&wparam(0)); + &mov(&DWP(0,"eax","",0),$R); + &mov(&DWP(4,"eax","",0),$L); + &function_end_A($name); + } + + &function_end_B($name); + } + +sub BF_ENCRYPT + { + local($i,$L,$R,$P,$tot,$tmp1,$tmp2,$tmp3)=@_; + + &rotr( $R, 16); + &mov( $tot, &DWP(&n2a($i*4),$P,"",0)); + + &movb( &LB($tmp1), &HB($R)); + &movb( &LB($tmp2), &LB($R)); + + &rotr( $R, 16); + &xor( $L, $tot); + + &mov( $tot, &DWP(&n2a($BF_OFF+0x0000),$P,$tmp1,4)); + &mov( $tmp3, &DWP(&n2a($BF_OFF+0x0400),$P,$tmp2,4)); + + &movb( &LB($tmp1), &HB($R)); + &movb( &LB($tmp2), &LB($R)); + + &add( $tot, $tmp3); + &mov( $tmp1, &DWP(&n2a($BF_OFF+0x0800),$P,$tmp1,4)); # delay + + &xor( $tot, $tmp1); + &mov( $tmp3, &DWP(&n2a($BF_OFF+0x0C00),$P,$tmp2,4)); + + &add( $tot, $tmp3); + &xor( $tmp1, $tmp1); + + &xor( $L, $tot); + # delay + } + +sub n2a + { + sprintf("%d",$_[0]); + } + |