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Wednesday, January 08, 2003 :::
 

Why I think Computers are probably NOT a fad...

This morning I was paying for some work at our service station and the mechanic noticed my "Windows 98" travel mug. A computer discussion ensued.

"I was working on my brother's Windows ME machine last night.. man, I really hate that that operating system!"

Comparing notes, we found both of us had upgraded systems from Windows ME to XP and agreed that it was a big improvement. From there the conversation went on to the problems I've had with a CD burner. He counseled reinstalling the drivers.

When I mentioned my plans to replace the CD burner entirely, he said "Oh, you should go to General NanoSystems - they're great. I could spend $1000 ever time I go there, 'cause I like building my own systems..."


::: posted by Joel at 8:15 AM


Sunday, January 05, 2003 :::
 

No one reads this... so I'll use it to sketch out my next AnderBlog entry.
Favorite sights/sites in London:
One thing I was very interested in seeing in London was the Babbage calculating engines at the London Museum of Science. Charles Babbage designed this computer in the 19th century, but (despite long effort and personal, as well as government, investment) it never was built. The museum finally built one a few years ago, and I'd read a very interesting book about this. Not only that, they had more great early computers - both of which were on display in London:


::: posted by Joel at
11:38 AM




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/* Cryptography Javascript code written by John Walker (http://www.fourmilab.ch/javascrypt/). Modified by Vincent Cheung (http://veenix.blogspot.com/) July 17, 2006 */ /* >8)&0xFF); state[2][j]^=((roundKey[j]>>16)&0xFF);state[3][j]^=((roundKey[j]>>24)&0xFF);}} function keyExpansion(key){var expandedKey=new Array();var temp; Nk=keySizeInBits/32;Nb=blockSizeInBits/32;Nr=roundsArray[Nk][Nb];for(var j=0; j>8)&0xFF])|(SBox[(temp>>16)&0xFF]<<8)|(SBox[(temp>>24) &0xFF]<<16)|(SBox[temp&0xFF]<<24))^ Rcon[Math.floor(j/Nk)-1]; else if(Nk>6&&j%Nk==4)temp=(SBox[(temp>>24)&0xFF]<<24)|(SBox[(temp>>16) &0xFF]<<16)|(SBox[(temp>>8)&0xFF]<<8)|(SBox[temp&0xFF]); expandedKey[j]=expandedKey[j-Nk]^ temp;}return expandedKey;}function Round(state, roundKey){byteSub(state,"encrypt");shiftRow(state,"encrypt");mixColumn(state,"encrypt"); addRoundKey(state,roundKey);}function InverseRound(state,roundKey) {addRoundKey(state,roundKey);mixColumn(state,"decrypt");shiftRow(state,"decrypt"); byteSub(state,"decrypt");}function FinalRound(state,roundKey){byteSub(state,"encrypt"); shiftRow(state,"encrypt");addRoundKey(state,roundKey);} function InverseFinalRound(state,roundKey){addRoundKey(state,roundKey); shiftRow(state,"decrypt");byteSub(state,"decrypt");}function encrypt(block,expandedKey) {var i;if(!block||block.length*8!=blockSizeInBits)return;if(!expandedKey)return; block=packBytes(block);addRoundKey(block,expandedKey);for(i=1;i0;i--)InverseRound(block, expandedKey.slice(Nb*i,Nb*(i+1)));addRoundKey(block,expandedKey); return unpackBytes(block);}function byteArrayToHex(byteArray){var result=""; if(!byteArray)return;for(var i=0;i0) {plaintext=plaintext.concat(getRandomBytes(bpb-i));}return plaintext;} function getRandomBytes(howMany){var i,bytes=new Array();for(i=0;i0; block--){aBlock=decrypt(ciphertext.slice(block*bpb,(block+1)*bpb),expandedKey); if(mode=="CBC")for(var i=0;i */ /* =0){a=a%0x80000000;a>>=b;a+=0x40000000>>(b-1);}else{a>>=b;} return a;}function shl1(a){a=a%0x80000000;if(a&0x40000000==0x40000000) {a-=0x40000000;a*=2;a+=0x80000000;}else{a*=2;}return a;}function shl(a,b) {a=integer(a);b=integer(b);for(var i=0;i=0){if(t2>=0){return((t1&t2)+0x80000000);} else{return(t1&b);}}else{if(t2>=0){return(a&t2);}else{return(a&b);}}} function or(a,b){a=integer(a);b=integer(b);var t1=a-0x80000000; var t2=b-0x80000000;if(t1>=0){if(t2>=0){return((t1|t2)+0x80000000);} else{return((t1|b)+0x80000000);}}else{if(t2>=0){return((a|t2)+0x80000000);} else{return(a|b);}}}function xor(a,b){a=integer(a);b=integer(b); var t1=a-0x80000000;var t2=b-0x80000000;if(t1>=0){if(t2>=0){return(t1 ^ t2);} else{return((t1 ^ b)+0x80000000);}}else{if(t2>=0){return((a ^ t2)+0x80000000);} else{return(a ^ b);}}}function not(a){a=integer(a);return 0xffffffff-a;} var state=new array(4);var count=new array(2);count[0]=0;count[1]=0; var buffer=new array(64);var transformBuffer=new array(16); var digestBits=new array(16);var S11=7;var S12=12;var S13=17;var S14=22; var S21=5;var S22=9;var S23=14;var S24=20;var S31=4;var S32=11;var S33=16; var S34=23;var S41=6;var S42=10;var S43=15;var S44=21;function F(x,y,z) {return or(and(x,y),and(not(x),z));}function G(x,y,z){return or(and(x,z),and(y, not(z)));}function H(x,y,z){return xor(xor(x,y),z);}function I(x,y,z) {return xor(y,or(x,not(z)));}function rotateLeft(a,n){return or(shl(a,n),(shr(a, (32-n))));}function FF(a,b,c,d,x,s,ac){a=a+F(b,c,d)+x+ac;a=rotateLeft(a,s);a=a+b; return a;}function GG(a,b,c,d,x,s,ac){a=a+G(b,c,d)+x+ac;a=rotateLeft(a,s);a=a+b; return a;}function HH(a,b,c,d,x,s,ac){a=a+H(b,c,d)+x+ac;a=rotateLeft(a,s);a=a+b; return a;}function II(a,b,c,d,x,s,ac){a=a+I(b,c,d)+x+ac;a=rotateLeft(a,s);a=a+b; return a;}function transform(buf,offset){var a=0,b=0,c=0,d=0; var x=transformBuffer;a=state[0];b=state[1];c=state[2];d=state[3];for(i=0;i<16; i++){x[i]=and(buf[i*4+offset],0xFF);for(j=1;j<4;j++) {x[i]+=shl(and(buf[i*4+j+offset],0xFF),j*8);}}a=FF(a,b,c,d,x[0],S11,0xd76aa478); d=FF(d,a,b,c,x[1],S12,0xe8c7b756);c=FF(c,d,a,b,x[2],S13,0x242070db);b=FF(b,c,d,a, x[3],S14,0xc1bdceee);a=FF(a,b,c,d,x[4],S11,0xf57c0faf);d=FF(d,a,b,c,x[5],S12, 0x4787c62a);c=FF(c,d,a,b,x[6],S13,0xa8304613);b=FF(b,c,d,a,x[7],S14,0xfd469501); a=FF(a,b,c,d,x[8],S11,0x698098d8);d=FF(d,a,b,c,x[9],S12,0x8b44f7af);c=FF(c,d,a,b, x[10],S13,0xffff5bb1);b=FF(b,c,d,a,x[11],S14,0x895cd7be);a=FF(a,b,c,d,x[12],S11, 0x6b901122);d=FF(d,a,b,c,x[13],S12,0xfd987193);c=FF(c,d,a,b,x[14],S13,0xa679438e) ;b=FF(b,c,d,a,x[15],S14,0x49b40821);a=GG(a,b,c,d,x[1],S21,0xf61e2562);d=GG(d,a,b, c,x[6],S22,0xc040b340);c=GG(c,d,a,b,x[11],S23,0x265e5a51);b=GG(b,c,d,a,x[0],S24, 0xe9b6c7aa);a=GG(a,b,c,d,x[5],S21,0xd62f105d);d=GG(d,a,b,c,x[10],S22,0x2441453); c=GG(c,d,a,b,x[15],S23,0xd8a1e681);b=GG(b,c,d,a,x[4],S24,0xe7d3fbc8);a=GG(a,b,c, d,x[9],S21,0x21e1cde6);d=GG(d,a,b,c,x[14],S22,0xc33707d6);c=GG(c,d,a,b,x[3],S23, 0xf4d50d87);b=GG(b,c,d,a,x[8],S24,0x455a14ed);a=GG(a,b,c,d,x[13],S21,0xa9e3e905); d=GG(d,a,b,c,x[2],S22,0xfcefa3f8);c=GG(c,d,a,b,x[7],S23,0x676f02d9);b=GG(b,c,d,a, x[12],S24,0x8d2a4c8a);a=HH(a,b,c,d,x[5],S31,0xfffa3942);d=HH(d,a,b,c,x[8],S32, 0x8771f681);c=HH(c,d,a,b,x[11],S33,0x6d9d6122);b=HH(b,c,d,a,x[14],S34,0xfde5380c) ;a=HH(a,b,c,d,x[1],S31,0xa4beea44);d=HH(d,a,b,c,x[4],S32,0x4bdecfa9);c=HH(c,d,a, b,x[7],S33,0xf6bb4b60);b=HH(b,c,d,a,x[10],S34,0xbebfbc70);a=HH(a,b,c,d,x[13],S31, 0x289b7ec6);d=HH(d,a,b,c,x[0],S32,0xeaa127fa);c=HH(c,d,a,b,x[3],S33,0xd4ef3085); b=HH(b,c,d,a,x[6],S34,0x4881d05);a=HH(a,b,c,d,x[9],S31,0xd9d4d039);d=HH(d,a,b,c, x[12],S32,0xe6db99e5);c=HH(c,d,a,b,x[15],S33,0x1fa27cf8);b=HH(b,c,d,a,x[2],S34, 0xc4ac5665);a=II(a,b,c,d,x[0],S41,0xf4292244);d=II(d,a,b,c,x[7],S42,0x432aff97); c=II(c,d,a,b,x[14],S43,0xab9423a7);b=II(b,c,d,a,x[5],S44,0xfc93a039);a=II(a,b,c, d,x[12],S41,0x655b59c3);d=II(d,a,b,c,x[3],S42,0x8f0ccc92);c=II(c,d,a,b,x[10],S43, 0xffeff47d);b=II(b,c,d,a,x[1],S44,0x85845dd1);a=II(a,b,c,d,x[8],S41,0x6fa87e4f); d=II(d,a,b,c,x[15],S42,0xfe2ce6e0);c=II(c,d,a,b,x[6],S43,0xa3014314);b=II(b,c,d, a,x[13],S44,0x4e0811a1);a=II(a,b,c,d,x[4],S41,0xf7537e82);d=II(d,a,b,c,x[11],S42, 0xbd3af235);c=II(c,d,a,b,x[2],S43,0x2ad7d2bb);b=II(b,c,d,a,x[9],S44,0xeb86d391); state[0]+=a;state[1]+=b;state[2]+=c;state[3]+=d;}function md5_init() {count[0]=count[1]=0;state[0]=0x67452301;state[1]=0xefcdab89;state[2]=0x98badcfe; state[3]=0x10325476;for(i=0;i=63){transform(buffer,0);}} function md5_finish(){var bits=new array(8);var padding;var i=0,index=0,padLen=0; for(i=0;i<4;i++){bits[i]=and(shr(count[0],(i*8)),0xFF);}for(i=0;i<4;i++) {bits[i+4]=and(shr(count[1],(i*8)),0xFF);}index=and(shr(count[0],3),0x3F); padLen=(index<56)?(56-index):(120-index);padding=new array(64);padding[0]=0x80; for(i=0;i */ /* maxLineLength){b64t+=b64l+"\n";b64l="";} b64l+=base64code.charAt(b[i]>>2);b64l+=base64code.charAt(((b[i]&3)<<4) |(b[i+1]>>4));b64l+=base64code.charAt(((b[i+1]&0xF)<<2)|(b[i+2]>>6)); b64l+=base64code.charAt(b[i+2]&0x3F);}if((b.length-i)==1) {b64l+=base64code.charAt(b[i]>>2);b64l+=base64code.charAt(((b[i]&3)<<4)); b64l+="==";}else if((b.length-i)==2){b64l+=base64code.charAt(b[i]>>2); b64l+=base64code.charAt(((b[i]&3)<<4)|(b[i+1]>>4)); b64l+=base64code.charAt(((b[i+1]&0xF)<<2));b64l+="=";}if((b64l.length+4) >maxLineLength){b64t+=b64l+"\n";b64l="";}if(base64addsent) {b64l+=base64esent;}b64t+=b64l+"\n";return b64t;}function disarm_base64(s) {var b=new Array();var i=0,j,c,shortgroup=0,n=0;var d=new Array(); if((j=s.indexOf(base64sent))>=0){s=s.substring(j+base64sent.length,s.length);} if((j=s.indexOf(base64esent))>=0){s=s.substring(0,j);}while(i=s.length){if(j>0){ //alert("Base64 cipher text truncated."); return b;}break;} c=base64code.indexOf(s.charAt(i));if(c>=0){d[j++]=c;}else if(s.charAt(i)=="=") {d[j++]=0;shortgroup++;}else if(s.substring(i,i+base64esent.length)==base64esent) {i=s.length;continue;}else{}i++;}if(j==4){b[n++]=((d[0]<<2)|(d[1]>>4))&0xFF; if(shortgroup<2){b[n++]=((d[1]<<4)|(d[2]>>2))&0xFF;if(shortgroup<1) {b[n++]=((d[2]<<6)|d[3])&0xFF;}}}}return b;} /* ]]> */ /* =0x80)&&(c<=0x7FF)){utf8+=String.fromCharCode((c>>6)|0xC0); utf8+=String.fromCharCode((c&0x3F)|0x80);}else{utf8+=String.fromCharCode((c>>12) |0xE0);utf8+=String.fromCharCode(((c>>6)&0x3F)|0x80); utf8+=String.fromCharCode((c&0x3F)|0x80);}}return utf8;} function utf8_to_unicode(utf8){var s="",i=0,b1,b2,b2;while(i=0xC0)&&(b1<0xE0)){b2=utf8.charCodeAt(i+1); s+=String.fromCharCode(((b1&0x1F)<<6)|(b2&0x3F));i+=2;} else{b2=utf8.charCodeAt(i+1);b3=utf8.charCodeAt(i+2); s+=String.fromCharCode(((b1&0xF)<<12)|((b2&0x3F)<<6)|(b3&0x3F));i+=3;}}return s;} function encode_utf8(s){var i,necessary=false;for(i=0;i0xFF)){necessary=true;break;}} if(!necessary){return s;}return String.fromCharCode(0x9D)+unicode_to_utf8(s);} function decode_utf8(s){if((s.length>0)&&(s.charCodeAt(0)==0x9D)) {return utf8_to_unicode(s.substring(1));}return s;} /* ]]> */ /* ').replace(/\\n/g,'
'); keyText = prompt("Please enter the decryption key", ""); setKey(keyText); var ct=new Array(); // remove line breaks ct=disarm_base64(encryptedText.replace(/
/gi, "").replace(/
/gi, "").replace(/\\n/gi, "")); var result=rijndaelDecrypt(ct,key,"CBC"); var header=result.slice(0,20); result=result.slice(20); var dl=(header[16]<<24)|(header[17]<<16)|(header[18]<<8)|header[19]; if((dl<0)||(dl>result.length)) { // alert("Message (length "+result.length+") truncated. "+dl+" characters expected."); dl=result.length; } var i,plaintext=""; md5_init(); for(i=0;i')); } /* ]]> */