1656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#!/usr/local/bin/perl 2656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 3656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# void des_ncbc_encrypt(input, output, length, schedule, ivec, enc) 4656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# des_cblock (*input); 5656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# des_cblock (*output); 6656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# long length; 7656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# des_key_schedule schedule; 8656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# des_cblock (*ivec); 9656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# int enc; 10656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# 11656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# calls 12656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT); 13656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# 14656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 15656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#&cbc("des_ncbc_encrypt","des_encrypt",0); 16656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#&cbc("BF_cbc_encrypt","BF_encrypt","BF_encrypt", 17656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# 1,4,5,3,5,-1); 18656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#&cbc("des_ncbc_encrypt","des_encrypt","des_encrypt", 19656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# 0,4,5,3,5,-1); 20656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#&cbc("des_ede3_cbc_encrypt","des_encrypt3","des_decrypt3", 21656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# 0,6,7,3,4,5); 22656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# 23656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# When doing a cipher that needs bigendian order, 24656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# for encrypt, the iv is kept in bigendian form, 25656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project# while for decrypt, it is kept in little endian. 26656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectsub cbc 27656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 28656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project local($name,$enc_func,$dec_func,$swap,$iv_off,$enc_off,$p1,$p2,$p3)=@_; 29656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project # name is the function name 30656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project # enc_func and dec_func and the functions to call for encrypt/decrypt 31656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project # swap is true if byte order needs to be reversed 32656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project # iv_off is parameter number for the iv 33656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project # enc_off is parameter number for the encrypt/decrypt flag 34656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project # p1,p2,p3 are the offsets for parameters to be passed to the 35656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project # underlying calls. 36656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 37656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &function_begin_B($name,""); 38656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &comment(""); 39656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 40656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project $in="esi"; 41656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project $out="edi"; 42656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project $count="ebp"; 43656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 44656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &push("ebp"); 45656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &push("ebx"); 46656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &push("esi"); 47656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &push("edi"); 48656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 49656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project $data_off=4; 50656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project $data_off+=4 if ($p1 > 0); 51656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project $data_off+=4 if ($p2 > 0); 52656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project $data_off+=4 if ($p3 > 0); 53656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 54656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov($count, &wparam(2)); # length 55656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 56656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &comment("getting iv ptr from parameter $iv_off"); 57656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("ebx", &wparam($iv_off)); # Get iv ptr 58656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 59656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov($in, &DWP(0,"ebx","",0));# iv[0] 60656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov($out, &DWP(4,"ebx","",0));# iv[1] 61656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 62656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &push($out); 63656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &push($in); 64656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &push($out); # used in decrypt for iv[1] 65656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &push($in); # used in decrypt for iv[0] 66656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 67656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("ebx", "esp"); # This is the address of tin[2] 68656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 69656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov($in, &wparam(0)); # in 70656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov($out, &wparam(1)); # out 71656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 72656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project # We have loaded them all, how lets push things 73656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &comment("getting encrypt flag from parameter $enc_off"); 74656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("ecx", &wparam($enc_off)); # Get enc flag 75656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ($p3 > 0) 76656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 77656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &comment("get and push parameter $p3"); 78656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ($enc_off != $p3) 79656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { &mov("eax", &wparam($p3)); &push("eax"); } 80656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else { &push("ecx"); } 81656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 82656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ($p2 > 0) 83656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 84656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &comment("get and push parameter $p2"); 85656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ($enc_off != $p2) 86656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { &mov("eax", &wparam($p2)); &push("eax"); } 87656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else { &push("ecx"); } 88656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 89656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ($p1 > 0) 90656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 91656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &comment("get and push parameter $p1"); 92656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ($enc_off != $p1) 93656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { &mov("eax", &wparam($p1)); &push("eax"); } 94656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else { &push("ecx"); } 95656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 96656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &push("ebx"); # push data/iv 97656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 98656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &cmp("ecx",0); 99656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &jz(&label("decrypt")); 100656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 101656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &and($count,0xfffffff8); 102656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("eax", &DWP($data_off,"esp","",0)); # load iv[0] 103656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("ebx", &DWP($data_off+4,"esp","",0)); # load iv[1] 104656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 105656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &jz(&label("encrypt_finish")); 106656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 107656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ############################################################# 108656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 109656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &set_label("encrypt_loop"); 110656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project # encrypt start 111656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project # "eax" and "ebx" hold iv (or the last cipher text) 112656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 113656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("ecx", &DWP(0,$in,"",0)); # load first 4 bytes 114656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("edx", &DWP(4,$in,"",0)); # second 4 bytes 115656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 116656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &xor("eax", "ecx"); 117656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &xor("ebx", "edx"); 118656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 119656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &bswap("eax") if $swap; 120656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &bswap("ebx") if $swap; 121656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 122656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov(&DWP($data_off,"esp","",0), "eax"); # put in array for call 123656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov(&DWP($data_off+4,"esp","",0), "ebx"); # 124656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 125656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &call($enc_func); 126656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 127656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("eax", &DWP($data_off,"esp","",0)); 128656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("ebx", &DWP($data_off+4,"esp","",0)); 129656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 130656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &bswap("eax") if $swap; 131656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &bswap("ebx") if $swap; 132656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 133656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov(&DWP(0,$out,"",0),"eax"); 134656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov(&DWP(4,$out,"",0),"ebx"); 135656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 136656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project # eax and ebx are the next iv. 137656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 138656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &add($in, 8); 139656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &add($out, 8); 140656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 141656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &sub($count, 8); 142656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &jnz(&label("encrypt_loop")); 143656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 144656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project###################################################################3 145656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &set_label("encrypt_finish"); 146656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov($count, &wparam(2)); # length 147656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &and($count, 7); 148656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &jz(&label("finish")); 149656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &call(&label("PIC_point")); 150656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project&set_label("PIC_point"); 151656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &blindpop("edx"); 152656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &lea("ecx",&DWP(&label("cbc_enc_jmp_table")."-".&label("PIC_point"),"edx")); 153656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov($count,&DWP(0,"ecx",$count,4)) 154656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &add($count,"edx"); 155656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &xor("ecx","ecx"); 156656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &xor("edx","edx"); 157656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project #&mov($count,&DWP(&label("cbc_enc_jmp_table"),"",$count,4)); 158656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &jmp_ptr($count); 159656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 160656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project&set_label("ej7"); 161656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &movb(&HB("edx"), &BP(6,$in,"",0)); 162656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &shl("edx",8); 163656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project&set_label("ej6"); 164656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &movb(&HB("edx"), &BP(5,$in,"",0)); 165656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project&set_label("ej5"); 166656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &movb(&LB("edx"), &BP(4,$in,"",0)); 167656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project&set_label("ej4"); 168656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("ecx", &DWP(0,$in,"",0)); 169656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &jmp(&label("ejend")); 170656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project&set_label("ej3"); 171656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &movb(&HB("ecx"), &BP(2,$in,"",0)); 172656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &shl("ecx",8); 173656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project&set_label("ej2"); 174656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &movb(&HB("ecx"), &BP(1,$in,"",0)); 175656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project&set_label("ej1"); 176656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &movb(&LB("ecx"), &BP(0,$in,"",0)); 177656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project&set_label("ejend"); 178656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 179656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &xor("eax", "ecx"); 180656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &xor("ebx", "edx"); 181656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 182656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &bswap("eax") if $swap; 183656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &bswap("ebx") if $swap; 184656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 185656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov(&DWP($data_off,"esp","",0), "eax"); # put in array for call 186656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov(&DWP($data_off+4,"esp","",0), "ebx"); # 187656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 188656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &call($enc_func); 189656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 190656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("eax", &DWP($data_off,"esp","",0)); 191656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("ebx", &DWP($data_off+4,"esp","",0)); 192656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 193656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &bswap("eax") if $swap; 194656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &bswap("ebx") if $swap; 195656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 196656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov(&DWP(0,$out,"",0),"eax"); 197656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov(&DWP(4,$out,"",0),"ebx"); 198656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 199656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &jmp(&label("finish")); 200656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 201656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ############################################################# 202656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ############################################################# 203656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &set_label("decrypt",1); 204656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project # decrypt start 205656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &and($count,0xfffffff8); 206656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project # The next 2 instructions are only for if the jz is taken 207656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("eax", &DWP($data_off+8,"esp","",0)); # get iv[0] 208656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("ebx", &DWP($data_off+12,"esp","",0)); # get iv[1] 209656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &jz(&label("decrypt_finish")); 210656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 211656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &set_label("decrypt_loop"); 212656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("eax", &DWP(0,$in,"",0)); # load first 4 bytes 213656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("ebx", &DWP(4,$in,"",0)); # second 4 bytes 214656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 215656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &bswap("eax") if $swap; 216656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &bswap("ebx") if $swap; 217656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 218656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov(&DWP($data_off,"esp","",0), "eax"); # put back 219656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov(&DWP($data_off+4,"esp","",0), "ebx"); # 220656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 221656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &call($dec_func); 222656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 223656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("eax", &DWP($data_off,"esp","",0)); # get return 224656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("ebx", &DWP($data_off+4,"esp","",0)); # 225656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 226656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &bswap("eax") if $swap; 227656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &bswap("ebx") if $swap; 228656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 229656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("ecx", &DWP($data_off+8,"esp","",0)); # get iv[0] 230656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("edx", &DWP($data_off+12,"esp","",0)); # get iv[1] 231656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 232656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &xor("ecx", "eax"); 233656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &xor("edx", "ebx"); 234656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 235656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("eax", &DWP(0,$in,"",0)); # get old cipher text, 236656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("ebx", &DWP(4,$in,"",0)); # next iv actually 237656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 238656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov(&DWP(0,$out,"",0),"ecx"); 239656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov(&DWP(4,$out,"",0),"edx"); 240656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 241656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov(&DWP($data_off+8,"esp","",0), "eax"); # save iv 242656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov(&DWP($data_off+12,"esp","",0), "ebx"); # 243656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 244656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &add($in, 8); 245656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &add($out, 8); 246656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 247656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &sub($count, 8); 248656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &jnz(&label("decrypt_loop")); 249656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project############################ ENDIT #######################3 250656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &set_label("decrypt_finish"); 251656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov($count, &wparam(2)); # length 252656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &and($count, 7); 253656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &jz(&label("finish")); 254656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 255656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("eax", &DWP(0,$in,"",0)); # load first 4 bytes 256656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("ebx", &DWP(4,$in,"",0)); # second 4 bytes 257656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 258656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &bswap("eax") if $swap; 259656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &bswap("ebx") if $swap; 260656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 261656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov(&DWP($data_off,"esp","",0), "eax"); # put back 262656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov(&DWP($data_off+4,"esp","",0), "ebx"); # 263656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 264656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &call($dec_func); 265656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 266656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("eax", &DWP($data_off,"esp","",0)); # get return 267656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("ebx", &DWP($data_off+4,"esp","",0)); # 268656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 269656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &bswap("eax") if $swap; 270656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &bswap("ebx") if $swap; 271656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 272656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("ecx", &DWP($data_off+8,"esp","",0)); # get iv[0] 273656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("edx", &DWP($data_off+12,"esp","",0)); # get iv[1] 274656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 275656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &xor("ecx", "eax"); 276656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &xor("edx", "ebx"); 277656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 278656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project # this is for when we exit 279656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("eax", &DWP(0,$in,"",0)); # get old cipher text, 280656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("ebx", &DWP(4,$in,"",0)); # next iv actually 281656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 282656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project&set_label("dj7"); 283656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &rotr("edx", 16); 284656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &movb(&BP(6,$out,"",0), &LB("edx")); 285656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &shr("edx",16); 286656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project&set_label("dj6"); 287656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &movb(&BP(5,$out,"",0), &HB("edx")); 288656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project&set_label("dj5"); 289656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &movb(&BP(4,$out,"",0), &LB("edx")); 290656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project&set_label("dj4"); 291656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov(&DWP(0,$out,"",0), "ecx"); 292656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &jmp(&label("djend")); 293656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project&set_label("dj3"); 294656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &rotr("ecx", 16); 295656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &movb(&BP(2,$out,"",0), &LB("ecx")); 296656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &shl("ecx",16); 297656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project&set_label("dj2"); 298656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &movb(&BP(1,$in,"",0), &HB("ecx")); 299656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project&set_label("dj1"); 300656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &movb(&BP(0,$in,"",0), &LB("ecx")); 301656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project&set_label("djend"); 302656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 303656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project # final iv is still in eax:ebx 304656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &jmp(&label("finish")); 305656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 306656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 307656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project############################ FINISH #######################3 308656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &set_label("finish",1); 309656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov("ecx", &wparam($iv_off)); # Get iv ptr 310656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 311656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ################################################# 312656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project $total=16+4; 313656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project $total+=4 if ($p1 > 0); 314656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project $total+=4 if ($p2 > 0); 315656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project $total+=4 if ($p3 > 0); 316656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &add("esp",$total); 317656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 318656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov(&DWP(0,"ecx","",0), "eax"); # save iv 319656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &mov(&DWP(4,"ecx","",0), "ebx"); # save iv 320656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 321656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &function_end_A($name); 322656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 323656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &align(64); 324656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &set_label("cbc_enc_jmp_table"); 325656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &data_word("0"); 326656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &data_word(&label("ej1")."-".&label("PIC_point")); 327656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &data_word(&label("ej2")."-".&label("PIC_point")); 328656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &data_word(&label("ej3")."-".&label("PIC_point")); 329656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &data_word(&label("ej4")."-".&label("PIC_point")); 330656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &data_word(&label("ej5")."-".&label("PIC_point")); 331656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &data_word(&label("ej6")."-".&label("PIC_point")); 332656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &data_word(&label("ej7")."-".&label("PIC_point")); 333656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project # not used 334656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project #&set_label("cbc_dec_jmp_table",1); 335656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project #&data_word("0"); 336656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project #&data_word(&label("dj1")."-".&label("PIC_point")); 337656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project #&data_word(&label("dj2")."-".&label("PIC_point")); 338656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project #&data_word(&label("dj3")."-".&label("PIC_point")); 339656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project #&data_word(&label("dj4")."-".&label("PIC_point")); 340656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project #&data_word(&label("dj5")."-".&label("PIC_point")); 341656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project #&data_word(&label("dj6")."-".&label("PIC_point")); 342656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project #&data_word(&label("dj7")."-".&label("PIC_point")); 343656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &align(64); 344656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 345656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project &function_end_B($name); 346656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 347656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 348656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 349656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project1; 350