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4 Commits

Author SHA1 Message Date
Kevin F 9ee71ede2c Rewrite initial version completed 2022-02-21 00:44:42 -06:00
Kevin Froman b0a60573f9 work on ternary encode function 2021-02-14 07:07:09 +00:00
Kevin Froman 7110f986c0 redid encode ui 2021-02-11 22:58:54 +00:00
Kevin Froman 0bc9b831d3 remove old dependencies 2021-02-11 22:07:00 +00:00
18 changed files with 159 additions and 3052 deletions

35
aes.min.js vendored
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/*
CryptoJS v3.1.2
code.google.com/p/crypto-js
(c) 2009-2013 by Jeff Mott. All rights reserved.
code.google.com/p/crypto-js/wiki/License
*/
var CryptoJS=CryptoJS||function(u,p){var d={},l=d.lib={},s=function(){},t=l.Base={extend:function(a){s.prototype=this;var c=new s;a&&c.mixIn(a);c.hasOwnProperty("init")||(c.init=function(){c.$super.init.apply(this,arguments)});c.init.prototype=c;c.$super=this;return c},create:function(){var a=this.extend();a.init.apply(a,arguments);return a},init:function(){},mixIn:function(a){for(var c in a)a.hasOwnProperty(c)&&(this[c]=a[c]);a.hasOwnProperty("toString")&&(this.toString=a.toString)},clone:function(){return this.init.prototype.extend(this)}},
r=l.WordArray=t.extend({init:function(a,c){a=this.words=a||[];this.sigBytes=c!=p?c:4*a.length},toString:function(a){return(a||v).stringify(this)},concat:function(a){var c=this.words,e=a.words,j=this.sigBytes;a=a.sigBytes;this.clamp();if(j%4)for(var k=0;k<a;k++)c[j+k>>>2]|=(e[k>>>2]>>>24-8*(k%4)&255)<<24-8*((j+k)%4);else if(65535<e.length)for(k=0;k<a;k+=4)c[j+k>>>2]=e[k>>>2];else c.push.apply(c,e);this.sigBytes+=a;return this},clamp:function(){var a=this.words,c=this.sigBytes;a[c>>>2]&=4294967295<<
32-8*(c%4);a.length=u.ceil(c/4)},clone:function(){var a=t.clone.call(this);a.words=this.words.slice(0);return a},random:function(a){for(var c=[],e=0;e<a;e+=4)c.push(4294967296*u.random()|0);return new r.init(c,a)}}),w=d.enc={},v=w.Hex={stringify:function(a){var c=a.words;a=a.sigBytes;for(var e=[],j=0;j<a;j++){var k=c[j>>>2]>>>24-8*(j%4)&255;e.push((k>>>4).toString(16));e.push((k&15).toString(16))}return e.join("")},parse:function(a){for(var c=a.length,e=[],j=0;j<c;j+=2)e[j>>>3]|=parseInt(a.substr(j,
2),16)<<24-4*(j%8);return new r.init(e,c/2)}},b=w.Latin1={stringify:function(a){var c=a.words;a=a.sigBytes;for(var e=[],j=0;j<a;j++)e.push(String.fromCharCode(c[j>>>2]>>>24-8*(j%4)&255));return e.join("")},parse:function(a){for(var c=a.length,e=[],j=0;j<c;j++)e[j>>>2]|=(a.charCodeAt(j)&255)<<24-8*(j%4);return new r.init(e,c)}},x=w.Utf8={stringify:function(a){try{return decodeURIComponent(escape(b.stringify(a)))}catch(c){throw Error("Malformed UTF-8 data");}},parse:function(a){return b.parse(unescape(encodeURIComponent(a)))}},
q=l.BufferedBlockAlgorithm=t.extend({reset:function(){this._data=new r.init;this._nDataBytes=0},_append:function(a){"string"==typeof a&&(a=x.parse(a));this._data.concat(a);this._nDataBytes+=a.sigBytes},_process:function(a){var c=this._data,e=c.words,j=c.sigBytes,k=this.blockSize,b=j/(4*k),b=a?u.ceil(b):u.max((b|0)-this._minBufferSize,0);a=b*k;j=u.min(4*a,j);if(a){for(var q=0;q<a;q+=k)this._doProcessBlock(e,q);q=e.splice(0,a);c.sigBytes-=j}return new r.init(q,j)},clone:function(){var a=t.clone.call(this);
a._data=this._data.clone();return a},_minBufferSize:0});l.Hasher=q.extend({cfg:t.extend(),init:function(a){this.cfg=this.cfg.extend(a);this.reset()},reset:function(){q.reset.call(this);this._doReset()},update:function(a){this._append(a);this._process();return this},finalize:function(a){a&&this._append(a);return this._doFinalize()},blockSize:16,_createHelper:function(a){return function(b,e){return(new a.init(e)).finalize(b)}},_createHmacHelper:function(a){return function(b,e){return(new n.HMAC.init(a,
e)).finalize(b)}}});var n=d.algo={};return d}(Math);
(function(){var u=CryptoJS,p=u.lib.WordArray;u.enc.Base64={stringify:function(d){var l=d.words,p=d.sigBytes,t=this._map;d.clamp();d=[];for(var r=0;r<p;r+=3)for(var w=(l[r>>>2]>>>24-8*(r%4)&255)<<16|(l[r+1>>>2]>>>24-8*((r+1)%4)&255)<<8|l[r+2>>>2]>>>24-8*((r+2)%4)&255,v=0;4>v&&r+0.75*v<p;v++)d.push(t.charAt(w>>>6*(3-v)&63));if(l=t.charAt(64))for(;d.length%4;)d.push(l);return d.join("")},parse:function(d){var l=d.length,s=this._map,t=s.charAt(64);t&&(t=d.indexOf(t),-1!=t&&(l=t));for(var t=[],r=0,w=0;w<
l;w++)if(w%4){var v=s.indexOf(d.charAt(w-1))<<2*(w%4),b=s.indexOf(d.charAt(w))>>>6-2*(w%4);t[r>>>2]|=(v|b)<<24-8*(r%4);r++}return p.create(t,r)},_map:"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="}})();
(function(u){function p(b,n,a,c,e,j,k){b=b+(n&a|~n&c)+e+k;return(b<<j|b>>>32-j)+n}function d(b,n,a,c,e,j,k){b=b+(n&c|a&~c)+e+k;return(b<<j|b>>>32-j)+n}function l(b,n,a,c,e,j,k){b=b+(n^a^c)+e+k;return(b<<j|b>>>32-j)+n}function s(b,n,a,c,e,j,k){b=b+(a^(n|~c))+e+k;return(b<<j|b>>>32-j)+n}for(var t=CryptoJS,r=t.lib,w=r.WordArray,v=r.Hasher,r=t.algo,b=[],x=0;64>x;x++)b[x]=4294967296*u.abs(u.sin(x+1))|0;r=r.MD5=v.extend({_doReset:function(){this._hash=new w.init([1732584193,4023233417,2562383102,271733878])},
_doProcessBlock:function(q,n){for(var a=0;16>a;a++){var c=n+a,e=q[c];q[c]=(e<<8|e>>>24)&16711935|(e<<24|e>>>8)&4278255360}var a=this._hash.words,c=q[n+0],e=q[n+1],j=q[n+2],k=q[n+3],z=q[n+4],r=q[n+5],t=q[n+6],w=q[n+7],v=q[n+8],A=q[n+9],B=q[n+10],C=q[n+11],u=q[n+12],D=q[n+13],E=q[n+14],x=q[n+15],f=a[0],m=a[1],g=a[2],h=a[3],f=p(f,m,g,h,c,7,b[0]),h=p(h,f,m,g,e,12,b[1]),g=p(g,h,f,m,j,17,b[2]),m=p(m,g,h,f,k,22,b[3]),f=p(f,m,g,h,z,7,b[4]),h=p(h,f,m,g,r,12,b[5]),g=p(g,h,f,m,t,17,b[6]),m=p(m,g,h,f,w,22,b[7]),
f=p(f,m,g,h,v,7,b[8]),h=p(h,f,m,g,A,12,b[9]),g=p(g,h,f,m,B,17,b[10]),m=p(m,g,h,f,C,22,b[11]),f=p(f,m,g,h,u,7,b[12]),h=p(h,f,m,g,D,12,b[13]),g=p(g,h,f,m,E,17,b[14]),m=p(m,g,h,f,x,22,b[15]),f=d(f,m,g,h,e,5,b[16]),h=d(h,f,m,g,t,9,b[17]),g=d(g,h,f,m,C,14,b[18]),m=d(m,g,h,f,c,20,b[19]),f=d(f,m,g,h,r,5,b[20]),h=d(h,f,m,g,B,9,b[21]),g=d(g,h,f,m,x,14,b[22]),m=d(m,g,h,f,z,20,b[23]),f=d(f,m,g,h,A,5,b[24]),h=d(h,f,m,g,E,9,b[25]),g=d(g,h,f,m,k,14,b[26]),m=d(m,g,h,f,v,20,b[27]),f=d(f,m,g,h,D,5,b[28]),h=d(h,f,
m,g,j,9,b[29]),g=d(g,h,f,m,w,14,b[30]),m=d(m,g,h,f,u,20,b[31]),f=l(f,m,g,h,r,4,b[32]),h=l(h,f,m,g,v,11,b[33]),g=l(g,h,f,m,C,16,b[34]),m=l(m,g,h,f,E,23,b[35]),f=l(f,m,g,h,e,4,b[36]),h=l(h,f,m,g,z,11,b[37]),g=l(g,h,f,m,w,16,b[38]),m=l(m,g,h,f,B,23,b[39]),f=l(f,m,g,h,D,4,b[40]),h=l(h,f,m,g,c,11,b[41]),g=l(g,h,f,m,k,16,b[42]),m=l(m,g,h,f,t,23,b[43]),f=l(f,m,g,h,A,4,b[44]),h=l(h,f,m,g,u,11,b[45]),g=l(g,h,f,m,x,16,b[46]),m=l(m,g,h,f,j,23,b[47]),f=s(f,m,g,h,c,6,b[48]),h=s(h,f,m,g,w,10,b[49]),g=s(g,h,f,m,
E,15,b[50]),m=s(m,g,h,f,r,21,b[51]),f=s(f,m,g,h,u,6,b[52]),h=s(h,f,m,g,k,10,b[53]),g=s(g,h,f,m,B,15,b[54]),m=s(m,g,h,f,e,21,b[55]),f=s(f,m,g,h,v,6,b[56]),h=s(h,f,m,g,x,10,b[57]),g=s(g,h,f,m,t,15,b[58]),m=s(m,g,h,f,D,21,b[59]),f=s(f,m,g,h,z,6,b[60]),h=s(h,f,m,g,C,10,b[61]),g=s(g,h,f,m,j,15,b[62]),m=s(m,g,h,f,A,21,b[63]);a[0]=a[0]+f|0;a[1]=a[1]+m|0;a[2]=a[2]+g|0;a[3]=a[3]+h|0},_doFinalize:function(){var b=this._data,n=b.words,a=8*this._nDataBytes,c=8*b.sigBytes;n[c>>>5]|=128<<24-c%32;var e=u.floor(a/
4294967296);n[(c+64>>>9<<4)+15]=(e<<8|e>>>24)&16711935|(e<<24|e>>>8)&4278255360;n[(c+64>>>9<<4)+14]=(a<<8|a>>>24)&16711935|(a<<24|a>>>8)&4278255360;b.sigBytes=4*(n.length+1);this._process();b=this._hash;n=b.words;for(a=0;4>a;a++)c=n[a],n[a]=(c<<8|c>>>24)&16711935|(c<<24|c>>>8)&4278255360;return b},clone:function(){var b=v.clone.call(this);b._hash=this._hash.clone();return b}});t.MD5=v._createHelper(r);t.HmacMD5=v._createHmacHelper(r)})(Math);
(function(){var u=CryptoJS,p=u.lib,d=p.Base,l=p.WordArray,p=u.algo,s=p.EvpKDF=d.extend({cfg:d.extend({keySize:4,hasher:p.MD5,iterations:1}),init:function(d){this.cfg=this.cfg.extend(d)},compute:function(d,r){for(var p=this.cfg,s=p.hasher.create(),b=l.create(),u=b.words,q=p.keySize,p=p.iterations;u.length<q;){n&&s.update(n);var n=s.update(d).finalize(r);s.reset();for(var a=1;a<p;a++)n=s.finalize(n),s.reset();b.concat(n)}b.sigBytes=4*q;return b}});u.EvpKDF=function(d,l,p){return s.create(p).compute(d,
l)}})();
CryptoJS.lib.Cipher||function(u){var p=CryptoJS,d=p.lib,l=d.Base,s=d.WordArray,t=d.BufferedBlockAlgorithm,r=p.enc.Base64,w=p.algo.EvpKDF,v=d.Cipher=t.extend({cfg:l.extend(),createEncryptor:function(e,a){return this.create(this._ENC_XFORM_MODE,e,a)},createDecryptor:function(e,a){return this.create(this._DEC_XFORM_MODE,e,a)},init:function(e,a,b){this.cfg=this.cfg.extend(b);this._xformMode=e;this._key=a;this.reset()},reset:function(){t.reset.call(this);this._doReset()},process:function(e){this._append(e);return this._process()},
finalize:function(e){e&&this._append(e);return this._doFinalize()},keySize:4,ivSize:4,_ENC_XFORM_MODE:1,_DEC_XFORM_MODE:2,_createHelper:function(e){return{encrypt:function(b,k,d){return("string"==typeof k?c:a).encrypt(e,b,k,d)},decrypt:function(b,k,d){return("string"==typeof k?c:a).decrypt(e,b,k,d)}}}});d.StreamCipher=v.extend({_doFinalize:function(){return this._process(!0)},blockSize:1});var b=p.mode={},x=function(e,a,b){var c=this._iv;c?this._iv=u:c=this._prevBlock;for(var d=0;d<b;d++)e[a+d]^=
c[d]},q=(d.BlockCipherMode=l.extend({createEncryptor:function(e,a){return this.Encryptor.create(e,a)},createDecryptor:function(e,a){return this.Decryptor.create(e,a)},init:function(e,a){this._cipher=e;this._iv=a}})).extend();q.Encryptor=q.extend({processBlock:function(e,a){var b=this._cipher,c=b.blockSize;x.call(this,e,a,c);b.encryptBlock(e,a);this._prevBlock=e.slice(a,a+c)}});q.Decryptor=q.extend({processBlock:function(e,a){var b=this._cipher,c=b.blockSize,d=e.slice(a,a+c);b.decryptBlock(e,a);x.call(this,
e,a,c);this._prevBlock=d}});b=b.CBC=q;q=(p.pad={}).Pkcs7={pad:function(a,b){for(var c=4*b,c=c-a.sigBytes%c,d=c<<24|c<<16|c<<8|c,l=[],n=0;n<c;n+=4)l.push(d);c=s.create(l,c);a.concat(c)},unpad:function(a){a.sigBytes-=a.words[a.sigBytes-1>>>2]&255}};d.BlockCipher=v.extend({cfg:v.cfg.extend({mode:b,padding:q}),reset:function(){v.reset.call(this);var a=this.cfg,b=a.iv,a=a.mode;if(this._xformMode==this._ENC_XFORM_MODE)var c=a.createEncryptor;else c=a.createDecryptor,this._minBufferSize=1;this._mode=c.call(a,
this,b&&b.words)},_doProcessBlock:function(a,b){this._mode.processBlock(a,b)},_doFinalize:function(){var a=this.cfg.padding;if(this._xformMode==this._ENC_XFORM_MODE){a.pad(this._data,this.blockSize);var b=this._process(!0)}else b=this._process(!0),a.unpad(b);return b},blockSize:4});var n=d.CipherParams=l.extend({init:function(a){this.mixIn(a)},toString:function(a){return(a||this.formatter).stringify(this)}}),b=(p.format={}).OpenSSL={stringify:function(a){var b=a.ciphertext;a=a.salt;return(a?s.create([1398893684,
1701076831]).concat(a).concat(b):b).toString(r)},parse:function(a){a=r.parse(a);var b=a.words;if(1398893684==b[0]&&1701076831==b[1]){var c=s.create(b.slice(2,4));b.splice(0,4);a.sigBytes-=16}return n.create({ciphertext:a,salt:c})}},a=d.SerializableCipher=l.extend({cfg:l.extend({format:b}),encrypt:function(a,b,c,d){d=this.cfg.extend(d);var l=a.createEncryptor(c,d);b=l.finalize(b);l=l.cfg;return n.create({ciphertext:b,key:c,iv:l.iv,algorithm:a,mode:l.mode,padding:l.padding,blockSize:a.blockSize,formatter:d.format})},
decrypt:function(a,b,c,d){d=this.cfg.extend(d);b=this._parse(b,d.format);return a.createDecryptor(c,d).finalize(b.ciphertext)},_parse:function(a,b){return"string"==typeof a?b.parse(a,this):a}}),p=(p.kdf={}).OpenSSL={execute:function(a,b,c,d){d||(d=s.random(8));a=w.create({keySize:b+c}).compute(a,d);c=s.create(a.words.slice(b),4*c);a.sigBytes=4*b;return n.create({key:a,iv:c,salt:d})}},c=d.PasswordBasedCipher=a.extend({cfg:a.cfg.extend({kdf:p}),encrypt:function(b,c,d,l){l=this.cfg.extend(l);d=l.kdf.execute(d,
b.keySize,b.ivSize);l.iv=d.iv;b=a.encrypt.call(this,b,c,d.key,l);b.mixIn(d);return b},decrypt:function(b,c,d,l){l=this.cfg.extend(l);c=this._parse(c,l.format);d=l.kdf.execute(d,b.keySize,b.ivSize,c.salt);l.iv=d.iv;return a.decrypt.call(this,b,c,d.key,l)}})}();
(function(){for(var u=CryptoJS,p=u.lib.BlockCipher,d=u.algo,l=[],s=[],t=[],r=[],w=[],v=[],b=[],x=[],q=[],n=[],a=[],c=0;256>c;c++)a[c]=128>c?c<<1:c<<1^283;for(var e=0,j=0,c=0;256>c;c++){var k=j^j<<1^j<<2^j<<3^j<<4,k=k>>>8^k&255^99;l[e]=k;s[k]=e;var z=a[e],F=a[z],G=a[F],y=257*a[k]^16843008*k;t[e]=y<<24|y>>>8;r[e]=y<<16|y>>>16;w[e]=y<<8|y>>>24;v[e]=y;y=16843009*G^65537*F^257*z^16843008*e;b[k]=y<<24|y>>>8;x[k]=y<<16|y>>>16;q[k]=y<<8|y>>>24;n[k]=y;e?(e=z^a[a[a[G^z]]],j^=a[a[j]]):e=j=1}var H=[0,1,2,4,8,
16,32,64,128,27,54],d=d.AES=p.extend({_doReset:function(){for(var a=this._key,c=a.words,d=a.sigBytes/4,a=4*((this._nRounds=d+6)+1),e=this._keySchedule=[],j=0;j<a;j++)if(j<d)e[j]=c[j];else{var k=e[j-1];j%d?6<d&&4==j%d&&(k=l[k>>>24]<<24|l[k>>>16&255]<<16|l[k>>>8&255]<<8|l[k&255]):(k=k<<8|k>>>24,k=l[k>>>24]<<24|l[k>>>16&255]<<16|l[k>>>8&255]<<8|l[k&255],k^=H[j/d|0]<<24);e[j]=e[j-d]^k}c=this._invKeySchedule=[];for(d=0;d<a;d++)j=a-d,k=d%4?e[j]:e[j-4],c[d]=4>d||4>=j?k:b[l[k>>>24]]^x[l[k>>>16&255]]^q[l[k>>>
8&255]]^n[l[k&255]]},encryptBlock:function(a,b){this._doCryptBlock(a,b,this._keySchedule,t,r,w,v,l)},decryptBlock:function(a,c){var d=a[c+1];a[c+1]=a[c+3];a[c+3]=d;this._doCryptBlock(a,c,this._invKeySchedule,b,x,q,n,s);d=a[c+1];a[c+1]=a[c+3];a[c+3]=d},_doCryptBlock:function(a,b,c,d,e,j,l,f){for(var m=this._nRounds,g=a[b]^c[0],h=a[b+1]^c[1],k=a[b+2]^c[2],n=a[b+3]^c[3],p=4,r=1;r<m;r++)var q=d[g>>>24]^e[h>>>16&255]^j[k>>>8&255]^l[n&255]^c[p++],s=d[h>>>24]^e[k>>>16&255]^j[n>>>8&255]^l[g&255]^c[p++],t=
d[k>>>24]^e[n>>>16&255]^j[g>>>8&255]^l[h&255]^c[p++],n=d[n>>>24]^e[g>>>16&255]^j[h>>>8&255]^l[k&255]^c[p++],g=q,h=s,k=t;q=(f[g>>>24]<<24|f[h>>>16&255]<<16|f[k>>>8&255]<<8|f[n&255])^c[p++];s=(f[h>>>24]<<24|f[k>>>16&255]<<16|f[n>>>8&255]<<8|f[g&255])^c[p++];t=(f[k>>>24]<<24|f[n>>>16&255]<<16|f[g>>>8&255]<<8|f[h&255])^c[p++];n=(f[n>>>24]<<24|f[g>>>16&255]<<16|f[h>>>8&255]<<8|f[k&255])^c[p++];a[b]=q;a[b+1]=s;a[b+2]=t;a[b+3]=n},keySize:8});u.AES=p._createHelper(d)})();

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<!DOCTYPE HTML>
<html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset='utf-8'>
<!-- Snow10 - Whitespace steganography. electronic invisible ink.
Copyright (C) 2017 Kevin Froman https://ChaosWebs.net/
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.-->
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
<meta name='description' content="Perform Whitespace steganography with encryption and zero width characters">
<meta name='author' content='Kevin Froman'>
<title>Snow10</title>
<link rel="stylesheet" href="./bootstrap.min.css">
<link rel="stylesheet" href="./bootstrap-theme.min.css">
<link rel="stylesheet" href="./font-awesome.min.css">
<link rel='stylesheet' href='./theme.css'>
<script src="./jquery.min.js"></script>
<script src="./bootstrap.min.js"></script>
<script src="./clipboard.min.js"></script>
<script src="./jquery.bootstrap-growl.min.js"></script>
<script src='./aes.min.js'></script>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Snow10 - text steganography</title>
<script src="clipboard.min.js"></script>
<script src="main.js" defer></script>
</head>
<body>
<a href="https://github.com/beardog108/snow10/"><img style="position: absolute; top: 0; right: 0; border: 0;" src="https://camo.githubusercontent.com/e7bbb0521b397edbd5fe43e7f760759336b5e05f/68747470733a2f2f73332e616d617a6f6e6177732e636f6d2f6769746875622f726962626f6e732f666f726b6d655f72696768745f677265656e5f3030373230302e706e67" alt="Fork me on GitHub" data-canonical-src="https://s3.amazonaws.com/github/ribbons/forkme_right_green_007200.png"></a>
<div class="modal" id="outputModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
<div class="modal-dialog" role="document">
<div class="modal-content">
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<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
<h4 class="modal-title center" id="myModalLabel">Your Text Is Ready!</h4>
</div>
<div class="modal-body">
<br>
<pre id='output'></pre>
<div class='center'><button class="btn btn-success" data-clipboard-action="copy" data-clipboard-target="#output">Copy to Clipboard</button></div>
<div id='copyFeedback' class='center'></div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal" id='modalClose'>Close</button>
</div>
</div>
</div>
</div>
<div class="container main">
<h1>Snow10 ☃</h1>
<p>Snow10 is a simple web app for converting text to zero width unicode characters, which can be hidden in normal messages.</p>
<p>It is inspired by the <a href="https://web.archive.org/web/20210117115615/http://darkside.com.au/snow/">original program</a> published in ~1998.</p>
<p>Do not use alongside languages/emoji that use zero-width characters. Sorry, it's the way it works.</p>
<pre>
Threat model: person visually looking at message threads in an app such as Twitter, Matrix, Signal, documents, etc. E.g. abusive family
<div class='container'>
Encrypt the secret message using something like age or keybase before using if encryption is needed.
<div class='page-header'>
<h1 class='center'>Snow10 ☃</h1>
</div>
<p>Snow10 is a simple web app for converting text to whitespace characters, which can be hidden in normal messages.</p>
<p>It is inspired by the <a href='http://darkside.com.au/snow/'>original program</a> published in 1998.</p>
<div id='dataArea'>
<textarea id='text' placeholder=''></textarea>
</div>
<div class='center'><button class='btn btn-sm btn-default dataItem' id='clearInputButton'>Clear Input <i class='fa fa-cross'></i></button></div>
<br><br>
<div class='center'>
<label>Use Zero-Width Characters <input type='checkbox' id='useZeroWidthCharacters' checked></label>
<br><br>
<label>Use Encryption <input type='checkbox' id='useEncrypt'></label>
<br><br>
<span id='encryptArea'>
<input type='password' id='password' placeholder='Encryption password' class='dataItem'>
<br>
<input type='password' id='confirmPass' placeholder='Confirm password' class='dataItem'>
<br>
</span>
<div class="btn-group" role="group" aria-label="..." id='encodeDecodeArea'>
<button type="button" class="btn btn-primary" id="encode">Encode <i class='fa fa-lock'></i></button>
<button type="button" class="btn btn-primary" id="decode">Decode <i class='fa fa-unlock'></i></button>
</div>
Will not resist forensic analysis. Don't use it over SMS.
Privacy: This works client-side and does not log any messages.
</pre>
<label>
<input type="checkbox" name="hideMode" checked>
Hide mode
</label>
<form class="encode">
<label for="hideText" name="hideTextZone">Non-secret message (secret gets hidden inside): <input type="text" name="hideText" placeholder="Wonderful weather we're having"></label>
<br>
</div>
<h1>Secret message</h1>
<textarea name="inputSecret" placeholder="Secret to hide" required></textarea>
<h1>Output</h1>
<textarea name="output" readonly></textarea>
<input type="submit" value="Hide">
</form>
<form class="decode">
<h1>Message containing secret</h1>
<textarea name="inputSecret" placeholder="Non-secret message with secret inside" required></textarea>
<h1>Output</h1>
<textarea name="output" readonly></textarea>
<input type="submit" value="Reveal Message">
</form>
</div>
<footer class='center'>made with <i class='fa fa-heart'></i> by <a href='https://www.chaoswebs.net/'>Kevin Froman</a></footer>
<script src='./main.js'></script>
</body>
</html>
</html>

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/*
Snow10 - Whitespace steganography. electronic invisible ink.
Copyright (C) 2017 Kevin Froman https://ChaosWebs.net/
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
var clipboard = new Clipboard('.btn');
var zero = '';
var one = '';
var z_zero = '';
var z_one = '';
var w_zero = ' ';
var w_one = '\t';
let zero_zwnj = ''
let one_zwl = ''
let two_zwsp = ''
function showError(msg){
$.bootstrapGrowl(msg, {type: 'danger'})
function doCheck(){
if (document.getElementsByName('hideMode')[0].checked){
document.getElementsByName('hideTextZone')[0].style.display = "block"
document.getElementsByClassName('encode')[0].style.display = "block"
document.getElementsByClassName('decode')[0].style.display = "none"
}
else{
document.getElementsByName('hideTextZone')[0].style.display = "none"
document.getElementsByClassName('encode')[0].style.display = "none"
document.getElementsByClassName('decode')[0].style.display = "block"
}
}
function escapeRegExp(str) {
return str.replace(/([.*+?^=!:${}()|\[\]\/\\])/g, "\\$1");
document.getElementsByName('hideMode')[0].onclick = function(){
doCheck()
}
function replaceAll(str, find, replace) {
return str.replace(new RegExp(escapeRegExp(find), 'g'), replace);
document.getElementsByClassName('encode')[0].onsubmit = function(e){
for (let i of document.getElementsByName('inputSecret')[0].value){
if (i.charCodeAt(0) >= 729){
alert("Unsupported character in message")
return false
}
}
e.preventDefault()
let coverText = document.getElementsByName('hideText')[0].value
let cover1 = ""
let cover2 = ""
if (coverText.length){
cover1 = coverText.substring(0, coverText.length / 2)
cover2 = coverText.substring(coverText.length / 2, coverText.length)
}
document.getElementsByName('output')[0].value = cover1 + textToTern(document.getElementsByName('inputSecret')[0].value) + cover2
return false
}
clipboard.on('success', function(e) {
$('#copyFeedback').css('display', 'inherit');
$('#copyFeedback').css('color', 'green');
$('#copyFeedback').html('Copied!');
e.clearSelection();
});
document.getElementsByClassName('decode')[0].onsubmit = function(e){
let input = document.getElementsByName('inputSecret')[1].value
clipboard.on('error', function(e) {
$('#copyFeedback').css('display', 'inherit');
$('#copyFeedback').css('color', 'red');
$('#copyFeedback').html('Your browser doesn\'t seem to support automatic copying. Get a better one.');
e.clearSelection();
});
if ($('#useEncrypt').is(':checked') == false)
{
$('#encryptArea').css('display', 'none');
console.debug(input.length)
console.debug(ternToText(input, true))
document.getElementsByName('output')[1].value = ternToText(input)
e.preventDefault()
return false
}
$('#modalClose').click(function(){
$('#copyFeedback').css('display', 'none');
});
let ternToText = function(input){
$("#output").on("click", function () {
$(this).select();
});
input = input.replaceAll(zero_zwnj, '0')
input = input.replaceAll(one_zwl, '1')
input = input.replaceAll(two_zwsp, '2')
$('#useZeroWidthCharacters').click(function(){
if (zero == w_zero)
{
zero = z_zero;
one = z_one;
}
else
{
zero = w_zero;
one = z_one;
}
});
/* based on stackoverflow.com/questions/14430633/how-to-convert-text-to-binary-code-in-javascript */
function binToText(str) {
var str = replaceAll(replaceAll(str, one, "1"), zero, "0");
if(str.match(/[10]{8}/g)){
var wordFromBinary = str.match(/([10]{8}|\s+)/g).map(function(fromBinary){
return String.fromCharCode(parseInt(fromBinary, 2) );
}).join('');
return wordFromBinary;
if(input.match(/[120]{6}/g)){
let wFromTernary = input.match(/([120]{6}|\s+)/g).map(function(fromTernary){
return String.fromCharCode(parseInt(fromTernary, 3) )
}).join('')
return wFromTernary.replaceAll("\u0000", "")
}
}
/* based on stackoverflow.com/questions/21354235/converting-binary-to-text-using-javascript */
function textToBin(text) {
var output = '';
var length = text.length,
output = [];
for (var i = 0;i < length; i++) {
var bin = text[i].charCodeAt().toString(2);
output.push(Array(8-bin.length+1).join("0") + bin);
}
return output.join('');
let textToTern = function(text) {
let output = []
let length = text.length
for (var i = 0;i < length; i++) {
let bin = text[i].charCodeAt().toString(3).replaceAll('0', zero_zwnj).replaceAll('1', one_zwl).replaceAll('2', two_zwsp)
output.push(Array(6-bin.length+1).join(zero_zwnj) + bin)
}
return output.join('')
}
$('#useEncrypt').click(function(){
if (! this.checked)
{
$('#encryptArea').css('display', 'none');
}
else
{
$('#encryptArea').css('display', 'inherit');
}
})
function verifyPass(mode)
{
if ($('#password').val() == '')
{
showError('You must provide a password.');
return false;
}
if (mode == 'encrypt')
{
if ($('#password').val() != $('#confirmPass').val())
{
showError('Passwords must match.');
return false;
}
}
return true;
}
$('#encode').click(function(){
$('#encodeDecodeArea').css('display', 'none');
go('encode');
$('#encodeDecodeArea').css('display', 'inline-block');
});
$('#decode').click(function(){
$('#encodeDecodeArea').css('display', 'none');
go('decode');
$('#encodeDecodeArea').css('display', 'inline-block');
});
function go(mode) {
var output = '';
var input = $('#text').val();
if (input == '') { return false; }
// If we're encoding:
if (mode == 'encode')
{
// If we should use encryption, encrypt first:
if ($('#useEncrypt').is(':checked'))
{
// verify password first
if (verifyPass('encrypt'))
{
input = CryptoJS.AES.encrypt(input, $('#password').val()).toString();
}
else
{
return false;
}
}
// convert result to binary
output = textToBin(encodeURIComponent(input));
$('#output').text(replaceAll(replaceAll(output.toString(), "1", one), "0", zero));
}
else
{
var sanitized = "";
var split = input.split("");
for (var i = 0; i < split.length; i++)
if(split[i] == one || split[i] == zero)
sanitized = sanitized + split[i]
var output = decodeURIComponent(binToText(sanitized));
if (output === 'undefined'){
showError('Could not decode message. Maybe there wasn\'t one?');
return false;
}
if ($('#useEncrypt').is(':checked'))
{
if (verifyPass('decrypt'))
{
output = CryptoJS.AES.decrypt(output, $('#password').val()).toString(CryptoJS.enc.Utf8);
}
else
{
return false;
}
}
$('#output').text(output.toString());
}
$('#outputModal').modal();
}
$('#clearInputButton').click(function(){
$('#text').val('');
});
doCheck()

BIN
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/*
Snow10 - Whitespace steganography. electronic invisible ink.
Copyright (C) 2017 Kevin Froman https://ChaosWebs.net/
Copyright (C) 2021 Kevin Froman https://ChaosWebs.net/
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
body
{
background-color: #d8d8d8;
color: black;
}
.center
{
text-align: center;
h1, p, label{
font-family: Verdana, Geneva, Tahoma, sans-serif;
}
#dataArea
{
margin-left: 3em;
margin-right: 3em;
textarea{
width: 35%;
height: 10em;
}
#text
{
width: 100%;
max-width: 100%;
min-height: 300px;
.encode{
margin-top: 2em;
display: block;
}
#one
{
margin-bottom: 1em;
input[type="submit"]{
display: block;
margin-top: 2em;
}
.dataItem
{
margin: 1em;
@media only screen and (max-width: 1000px) {
textarea{
width: 75%;
}
}
input[type="submit"] {
margin-top: 5em;
box-shadow:inset 0px 1px 3px 0px #91b8b3;
background:linear-gradient(to bottom, #768d87 5%, #6c7c7c 100%);
background-color:#768d87;
border-radius:5px;
border:1px solid #566963;
display:block;
cursor:pointer;
color:#ffffff;
font-family:Arial;
font-size:15px;
font-weight:bold;
padding:11px 23px;
text-decoration:none;
text-shadow:0px -1px 0px #2b665e;
}
input[type="submit"]:hover {
background:linear-gradient(to bottom, #6c7c7c 5%, #768d87 100%);
background-color:#6c7c7c;
}
input[type="submit"]:active {
position:relative;
top:1px;
}
footer
{
margin-top: 1em;
margin-bottom: 2em;
.container{
margin-left: 2em;
}
#copyFeedback
{
margin-top: 1em;
margin-bottom: 1em;
}
#outputDecode, #copyFeedback{
.decode{
display: none;
}
#outputDecode{
overflow: scroll;
}
}

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body{background-color:#d8d8d8;color:black}.center{text-align:center}#dataArea{margin-left:3em;margin-right:3em}#text{width:100%;max-width:100%;min-height:300px}#one{margin-bottom:1em}.dataItem{margin:1em}footer{margin-top:1em;margin-bottom:2em}#copyFeedback{margin-top:1em;margin-bottom:1em}#outputDecode,#copyFeedback{display:none}#outputDecode{overflow:scroll}