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crypto: update to v1.3, implement encrypt/decrypt

Added client/sjcl-with-cbc.js (minified) since the stock sjcl.js doesn't
include CBC mode.
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1 parent 574b9b8 commit 1f95c567d0ff9198c3bd537e0198aa305b7f7e02 @warner warner committed Jan 2, 2013
Showing with 118 additions and 33 deletions.
  1. +73 −33 client/crypto.js
  2. +45 −0 client/sjcl-with-cbc.js
View
106 client/crypto.js
@@ -1,6 +1,8 @@
if (typeof sjcl === 'undefined') {
- var sjcl = require('./sjcl.js');
+ var sjcl = require('./sjcl-with-cbc.js');
+ // we use an HMAC tag to check message integrity, to use CBC safely
+ sjcl.beware["CBC mode is dangerous because it doesn't protect message integrity."]();
//var Hawk = require('hawk');
}
@@ -18,11 +20,18 @@ var GombotCrypto = (function() {
// sha-256 hash function
var PBKDF2_OUTPUT_LENGTH_BITS = 32 * 8;
- // salt string for derivation of keyAuth
+ var MASTER_SALT_PREFIX_STRING = "identity.mozilla.com/gombot/v1/master:";
+
+ // salt string for derivation of keys.authKey (for HAWK)
var AUTH_SALT_STRING = "identity.mozilla.com/gombot/v1/authentication";
- // salt string for derivation of keyCrypt
- var CRYPT_SALT_STRING = "identity.mozilla.com/gombot/v1/encryption";
+ // salt string for derivation of keys.aesKey
+ var AES_SALT_STRING = "identity.mozilla.com/gombot/v1/data/AES";
+
+ // and for derivation of keys.hmacKey
+ var HMAC_SALT_STRING = "identity.mozilla.com/gombot/v1/data/HMAC";
+
+ var GOMBOT_VERSION_PREFIX = "identity.mozilla.com/gombot/v1/data:";
// methods supported for request signing
var SUPPORTED_METHODS = {
@@ -48,38 +57,69 @@ var GombotCrypto = (function() {
// yes, this async break is artificial for now, but is web worker
// compatible in the future.
setTimeout(function() {
- var saltBits = sjcl.codec.utf8String.toBits(args.email);
- var derivedKey = sjcl.misc.pbkdf2(args.password,
- saltBits,
- PBKDF2_ROUNDS,
- PBKDF2_OUTPUT_LENGTH_BITS);
-
- // XXX: for now we're doing another round of PBKDF2 to derive authKey and
- // cryptKey. We should be doing HKDF?
- var rv = {};
- var authSaltBits = sjcl.codec.utf8String.toBits(AUTH_SALT_STRING);
- rv.authKey = sjcl.misc.pbkdf2(derivedKey,
- authSaltBits,
- 1,
- PBKDF2_OUTPUT_LENGTH_BITS);
- var cryptSaltBits = sjcl.codec.utf8String.toBits(CRYPT_SALT_STRING);
- rv.cryptKey = sjcl.misc.pbkdf2(derivedKey,
- cryptSaltBits,
- 1,
- PBKDF2_OUTPUT_LENGTH_BITS);
-
- // always return content to the client as base64 encoded strings.
- rv.authKey = sjcl.codec.base64.fromBits(rv.authKey);
- rv.cryptKey = sjcl.codec.base64.fromBits(rv.cryptKey);
-
- cb(null, rv);
+ var pbkdf2 = sjc.misc.pbkdf2;
+ var bA = sjcl.bitArray;
+ var str2bits = sjcl.codec.utf8String.toBits;
+ var secret = str2bits(""); // for the future
+ var masterSecret = bA.concat(bA.concat(secret, str2bits(":")),
+ str2bits(args.password));
+ var saltBits = bA.concat(str2bits(MASTER_SALT_PREFIX_STRING),
+ str2bits(args.email));
+ var masterKey = pbkdf2(masterSecret, saltBits,
+ PBKDF2_ROUNDS, PBKDF2_OUTPUT_LENGTH_BITS);
+ // derive the three other keys from this master. Return them as hex.
+ var bits2hex = sjcl.codec.hex.fromBits;
+ var keys = {};
+ keys.authKey = bits2hex(pbkdf2(masterKey, str2bits(AUTH_SALT_STRING),
+ 1, PBKDF2_OUTPUT_LENGTH_BITS));
+ keys.aesKey = bits2hex(pbkdf2(masterKey, str2bits(AES_SALT_STRING),
+ 1, PBKDF2_OUTPUT_LENGTH_BITS));
+ keys.hmacKey = bits2hex(pbkdf2(masterKey, str2bits(HMAC_SALT_STRING),
+ 1, PBKDF2_OUTPUT_LENGTH_BITS));
+ cb(null, keys);
}, 0);
},
- encrypt: function(cryptKey, plainText, cb) {
- setTimeout(cb, 0);
+ encrypt: function(keys, plainText, cb) {
+ setTimeout(function() {
+ var bA = sjcl.bitArray;
+ var str2bits = sjcl.codec.utf8String.toBits;
+ var bits2b64 = sjcl.codec.base64.fromBits;
+ var hex2bits = sjcl.codec.hex.toBits;
+ var IV = sjcl.random.randomWords(16/4);
+ var ct = sjcl.mode.cbc.encrypt(new sjcl.cipher.aes(hex2bits(keys.aesKey)),
+ str2bits(plainText), IV);
+ var msg = bA.concat(bA.concat(str2bits(GOMBOT_VERSION_PREFIX), IV), ct);
+ var mac = new sjcl.misc.hmac(hex2bits(keys.hmacKey),
+ sjcl.hash.sha256).mac(msg);
+ var msgmac_b64 = bits2b64(bA.concat(msg, mac));
+ cb(null, msgmac_b64);
+ }, 0);
},
- decrypt: function(cryptKey, cipherText, cb) {
- setTimeout(cb, 0);
+ decrypt: function(keys, cipherText, cb) {
+ setTimeout(function() {
+ var bA = sjcl.bitArray;
+ var str2bits = sjcl.codec.utf8String.toBits;
+ var bits2str = sjcl.codec.utf8String.fromBits;
+ var b642bits = sjcl.codec.base64.toBits;
+ var hex2bits = sjcl.codec.hex.toBits;
+ var msgmac = b642bits(cipherText);
+ var prefixBits = str2bits(GOMBOT_VERSION_PREFIX);
+ var prelen = bA.bitLength(prefixBits);
+ var gotPrefix = bA.bitSlice(msgmac, 0, prelen);
+ if (!bA.equal(gotPrefix, prefixBits))
+ return cb(new Error("unrecognized version prefix '"+bits2str(gotPrefix)+"'"));
+ var macable = bA.bitSlice(msgmac, 0, bA.bitLength(msgmac)-32*8);
+ var expectedMac = new sjcl.misc.hmac(hex2bits(keys.hmacKey),
+ sjcl.hash.sha256).mac(macable);
+ var gotMac = bA.bitSlice(msgmac, bA.bitLength(msgmac)-32*8);
+ if (!bA.equal(expectedMac, gotMac)) // this is constant-time
+ return cb(new Error("Corrupt encrypted data"));
+ var IV = bA.bitSlice(macable, prelen, prelen+16*8);
+ var msg = bA.bitSlice(macable, prelen+16*8);
+ var plaintext = sjcl.mode.cbc.decrypt(new sjcl.cipher.aes(hex2bits(keys.aesKey)), msg, IV);
+
+ cb(null, bits2str(plaintext));
+ }, 0);
},
sign: function(args, cb) {
var SUPPORTED_METHODS = {
View
45 client/sjcl-with-cbc.js
@@ -0,0 +1,45 @@
+"use strict";var sjcl={cipher:{},hash:{},keyexchange:{},mode:{},misc:{},codec:{},exception:{corrupt:function(a){this.toString=function(){return"CORRUPT: "+this.message};this.message=a},invalid:function(a){this.toString=function(){return"INVALID: "+this.message};this.message=a},bug:function(a){this.toString=function(){return"BUG: "+this.message};this.message=a},notReady:function(a){this.toString=function(){return"NOT READY: "+this.message};this.message=a}}};
+if(typeof module!="undefined"&&module.exports)module.exports=sjcl;
+sjcl.cipher.aes=function(a){this.i[0][0][0]||this.z();var b,c,d,e,f=this.i[0][4],g=this.i[1];b=a.length;var h=1;if(b!==4&&b!==6&&b!==8)throw new sjcl.exception.invalid("invalid aes key size");this.a=[d=a.slice(0),e=[]];for(a=b;a<4*b+28;a++){c=d[a-1];if(a%b===0||b===8&&a%b===4){c=f[c>>>24]<<24^f[c>>16&255]<<16^f[c>>8&255]<<8^f[c&255];if(a%b===0){c=c<<8^c>>>24^h<<24;h=h<<1^(h>>7)*283}}d[a]=d[a-b]^c}for(b=0;a;b++,a--){c=d[b&3?a:a-4];e[b]=a<=4||b<4?c:g[0][f[c>>>24]]^g[1][f[c>>16&255]]^g[2][f[c>>8&255]]^
+g[3][f[c&255]]}};
+sjcl.cipher.aes.prototype={encrypt:function(a){return this.I(a,0)},decrypt:function(a){return this.I(a,1)},i:[[[],[],[],[],[]],[[],[],[],[],[]]],z:function(){var a=this.i[0],b=this.i[1],c=a[4],d=b[4],e,f,g,h=[],i=[],k,j,l,m;for(e=0;e<0x100;e++)i[(h[e]=e<<1^(e>>7)*283)^e]=e;for(f=g=0;!c[f];f^=k||1,g=i[g]||1){l=g^g<<1^g<<2^g<<3^g<<4;l=l>>8^l&255^99;c[f]=l;d[l]=f;j=h[e=h[k=h[f]]];m=j*0x1010101^e*0x10001^k*0x101^f*0x1010100;j=h[l]*0x101^l*0x1010100;for(e=0;e<4;e++){a[e][f]=j=j<<24^j>>>8;b[e][l]=m=m<<24^m>>>8}}for(e=
+0;e<5;e++){a[e]=a[e].slice(0);b[e]=b[e].slice(0)}},I:function(a,b){if(a.length!==4)throw new sjcl.exception.invalid("invalid aes block size");var c=this.a[b],d=a[0]^c[0],e=a[b?3:1]^c[1],f=a[2]^c[2];a=a[b?1:3]^c[3];var g,h,i,k=c.length/4-2,j,l=4,m=[0,0,0,0];g=this.i[b];var n=g[0],o=g[1],p=g[2],q=g[3],r=g[4];for(j=0;j<k;j++){g=n[d>>>24]^o[e>>16&255]^p[f>>8&255]^q[a&255]^c[l];h=n[e>>>24]^o[f>>16&255]^p[a>>8&255]^q[d&255]^c[l+1];i=n[f>>>24]^o[a>>16&255]^p[d>>8&255]^q[e&255]^c[l+2];a=n[a>>>24]^o[d>>16&
+255]^p[e>>8&255]^q[f&255]^c[l+3];l+=4;d=g;e=h;f=i}for(j=0;j<4;j++){m[b?3&-j:j]=r[d>>>24]<<24^r[e>>16&255]<<16^r[f>>8&255]<<8^r[a&255]^c[l++];g=d;d=e;e=f;f=a;a=g}return m}};
+sjcl.bitArray={bitSlice:function(a,b,c){a=sjcl.bitArray.P(a.slice(b/32),32-(b&31)).slice(1);return c===undefined?a:sjcl.bitArray.clamp(a,c-b)},extract:function(a,b,c){var d=Math.floor(-b-c&31);return((b+c-1^b)&-32?a[b/32|0]<<32-d^a[b/32+1|0]>>>d:a[b/32|0]>>>d)&(1<<c)-1},concat:function(a,b){if(a.length===0||b.length===0)return a.concat(b);var c=a[a.length-1],d=sjcl.bitArray.getPartial(c);return d===32?a.concat(b):sjcl.bitArray.P(b,d,c|0,a.slice(0,a.length-1))},bitLength:function(a){var b=a.length;
+if(b===0)return 0;return(b-1)*32+sjcl.bitArray.getPartial(a[b-1])},clamp:function(a,b){if(a.length*32<b)return a;a=a.slice(0,Math.ceil(b/32));var c=a.length;b&=31;if(c>0&&b)a[c-1]=sjcl.bitArray.partial(b,a[c-1]&2147483648>>b-1,1);return a},partial:function(a,b,c){if(a===32)return b;return(c?b|0:b<<32-a)+a*0x10000000000},getPartial:function(a){return Math.round(a/0x10000000000)||32},equal:function(a,b){if(sjcl.bitArray.bitLength(a)!==sjcl.bitArray.bitLength(b))return false;var c=0,d;for(d=0;d<a.length;d++)c|=
+a[d]^b[d];return c===0},P:function(a,b,c,d){var e;e=0;if(d===undefined)d=[];for(;b>=32;b-=32){d.push(c);c=0}if(b===0)return d.concat(a);for(e=0;e<a.length;e++){d.push(c|a[e]>>>b);c=a[e]<<32-b}e=a.length?a[a.length-1]:0;a=sjcl.bitArray.getPartial(e);d.push(sjcl.bitArray.partial(b+a&31,b+a>32?c:d.pop(),1));return d},e:function(a,b){return[a[0]^b[0],a[1]^b[1],a[2]^b[2],a[3]^b[3]]}};
+sjcl.codec.utf8String={fromBits:function(a){var b="",c=sjcl.bitArray.bitLength(a),d,e;for(d=0;d<c/8;d++){if((d&3)===0)e=a[d/4];b+=String.fromCharCode(e>>>24);e<<=8}return decodeURIComponent(escape(b))},toBits:function(a){a=unescape(encodeURIComponent(a));var b=[],c,d=0;for(c=0;c<a.length;c++){d=d<<8|a.charCodeAt(c);if((c&3)===3){b.push(d);d=0}}c&3&&b.push(sjcl.bitArray.partial(8*(c&3),d));return b}};
+sjcl.codec.hex={fromBits:function(a){var b="",c;for(c=0;c<a.length;c++)b+=((a[c]|0)+0xf00000000000).toString(16).substr(4);return b.substr(0,sjcl.bitArray.bitLength(a)/4)},toBits:function(a){var b,c=[],d;a=a.replace(/\s|0x/g,"");d=a.length;a+="00000000";for(b=0;b<a.length;b+=8)c.push(parseInt(a.substr(b,8),16)^0);return sjcl.bitArray.clamp(c,d*4)}};
+sjcl.codec.base64={F:"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",fromBits:function(a,b,c){var d="",e=0,f=sjcl.codec.base64.F,g=0,h=sjcl.bitArray.bitLength(a);if(c)f=f.substr(0,62)+"-_";for(c=0;d.length*6<h;){d+=f.charAt((g^a[c]>>>e)>>>26);if(e<6){g=a[c]<<6-e;e+=26;c++}else{g<<=6;e-=6}}for(;d.length&3&&!b;)d+="=";return d},toBits:function(a,b){a=a.replace(/\s|=/g,"");var c=[],d=0,e=sjcl.codec.base64.F,f=0,g;if(b)e=e.substr(0,62)+"-_";for(b=0;b<a.length;b++){g=e.indexOf(a.charAt(b));
+if(g<0)throw new sjcl.exception.invalid("this isn't base64!");if(d>26){d-=26;c.push(f^g>>>d);f=g<<32-d}else{d+=6;f^=g<<32-d}}d&56&&c.push(sjcl.bitArray.partial(d&56,f,1));return c}};sjcl.codec.base64url={fromBits:function(a){return sjcl.codec.base64.fromBits(a,1,1)},toBits:function(a){return sjcl.codec.base64.toBits(a,1)}};sjcl.hash.sha256=function(a){this.a[0]||this.z();if(a){this.n=a.n.slice(0);this.j=a.j.slice(0);this.f=a.f}else this.reset()};sjcl.hash.sha256.hash=function(a){return(new sjcl.hash.sha256).update(a).finalize()};
+sjcl.hash.sha256.prototype={blockSize:512,reset:function(){this.n=this.N.slice(0);this.j=[];this.f=0;return this},update:function(a){if(typeof a==="string")a=sjcl.codec.utf8String.toBits(a);var b,c=this.j=sjcl.bitArray.concat(this.j,a);b=this.f;a=this.f=b+sjcl.bitArray.bitLength(a);for(b=512+b&-512;b<=a;b+=512)this.D(c.splice(0,16));return this},finalize:function(){var a,b=this.j,c=this.n;b=sjcl.bitArray.concat(b,[sjcl.bitArray.partial(1,1)]);for(a=b.length+2;a&15;a++)b.push(0);b.push(Math.floor(this.f/
+4294967296));for(b.push(this.f|0);b.length;)this.D(b.splice(0,16));this.reset();return c},N:[],a:[],z:function(){function a(e){return(e-Math.floor(e))*0x100000000|0}var b=0,c=2,d;a:for(;b<64;c++){for(d=2;d*d<=c;d++)if(c%d===0)continue a;if(b<8)this.N[b]=a(Math.pow(c,0.5));this.a[b]=a(Math.pow(c,1/3));b++}},D:function(a){var b,c,d=a.slice(0),e=this.n,f=this.a,g=e[0],h=e[1],i=e[2],k=e[3],j=e[4],l=e[5],m=e[6],n=e[7];for(a=0;a<64;a++){if(a<16)b=d[a];else{b=d[a+1&15];c=d[a+14&15];b=d[a&15]=(b>>>7^b>>>18^
+b>>>3^b<<25^b<<14)+(c>>>17^c>>>19^c>>>10^c<<15^c<<13)+d[a&15]+d[a+9&15]|0}b=b+n+(j>>>6^j>>>11^j>>>25^j<<26^j<<21^j<<7)+(m^j&(l^m))+f[a];n=m;m=l;l=j;j=k+b|0;k=i;i=h;h=g;g=b+(h&i^k&(h^i))+(h>>>2^h>>>13^h>>>22^h<<30^h<<19^h<<10)|0}e[0]=e[0]+g|0;e[1]=e[1]+h|0;e[2]=e[2]+i|0;e[3]=e[3]+k|0;e[4]=e[4]+j|0;e[5]=e[5]+l|0;e[6]=e[6]+m|0;e[7]=e[7]+n|0}};
+sjcl.mode.ccm={name:"ccm",encrypt:function(a,b,c,d,e){var f,g=b.slice(0),h=sjcl.bitArray,i=h.bitLength(c)/8,k=h.bitLength(g)/8;e=e||64;d=d||[];if(i<7)throw new sjcl.exception.invalid("ccm: iv must be at least 7 bytes");for(f=2;f<4&&k>>>8*f;f++);if(f<15-i)f=15-i;c=h.clamp(c,8*(15-f));b=sjcl.mode.ccm.H(a,b,c,d,e,f);g=sjcl.mode.ccm.J(a,g,c,b,e,f);return h.concat(g.data,g.tag)},decrypt:function(a,b,c,d,e){e=e||64;d=d||[];var f=sjcl.bitArray,g=f.bitLength(c)/8,h=f.bitLength(b),i=f.clamp(b,h-e),k=f.bitSlice(b,
+h-e);h=(h-e)/8;if(g<7)throw new sjcl.exception.invalid("ccm: iv must be at least 7 bytes");for(b=2;b<4&&h>>>8*b;b++);if(b<15-g)b=15-g;c=f.clamp(c,8*(15-b));i=sjcl.mode.ccm.J(a,i,c,k,e,b);a=sjcl.mode.ccm.H(a,i.data,c,d,e,b);if(!f.equal(i.tag,a))throw new sjcl.exception.corrupt("ccm: tag doesn't match");return i.data},H:function(a,b,c,d,e,f){var g=[],h=sjcl.bitArray,i=h.e;e/=8;if(e%2||e<4||e>16)throw new sjcl.exception.invalid("ccm: invalid tag length");if(d.length>0xffffffff||b.length>0xffffffff)throw new sjcl.exception.bug("ccm: can't deal with 4GiB or more data");
+f=[h.partial(8,(d.length?64:0)|e-2<<2|f-1)];f=h.concat(f,c);f[3]|=h.bitLength(b)/8;f=a.encrypt(f);if(d.length){c=h.bitLength(d)/8;if(c<=65279)g=[h.partial(16,c)];else if(c<=0xffffffff)g=h.concat([h.partial(16,65534)],[c]);g=h.concat(g,d);for(d=0;d<g.length;d+=4)f=a.encrypt(i(f,g.slice(d,d+4).concat([0,0,0])))}for(d=0;d<b.length;d+=4)f=a.encrypt(i(f,b.slice(d,d+4).concat([0,0,0])));return h.clamp(f,e*8)},J:function(a,b,c,d,e,f){var g,h=sjcl.bitArray;g=h.e;var i=b.length,k=h.bitLength(b);c=h.concat([h.partial(8,
+f-1)],c).concat([0,0,0]).slice(0,4);d=h.bitSlice(g(d,a.encrypt(c)),0,e);if(!i)return{tag:d,data:[]};for(g=0;g<i;g+=4){c[3]++;e=a.encrypt(c);b[g]^=e[0];b[g+1]^=e[1];b[g+2]^=e[2];b[g+3]^=e[3]}return{tag:d,data:h.clamp(b,k)}}};
+sjcl.mode.ocb2={name:"ocb2",encrypt:function(a,b,c,d,e,f){if(sjcl.bitArray.bitLength(c)!==128)throw new sjcl.exception.invalid("ocb iv must be 128 bits");var g,h=sjcl.mode.ocb2.B,i=sjcl.bitArray,k=i.e,j=[0,0,0,0];c=h(a.encrypt(c));var l,m=[];d=d||[];e=e||64;for(g=0;g+4<b.length;g+=4){l=b.slice(g,g+4);j=k(j,l);m=m.concat(k(c,a.encrypt(k(c,l))));c=h(c)}l=b.slice(g);b=i.bitLength(l);g=a.encrypt(k(c,[0,0,0,b]));l=i.clamp(k(l.concat([0,0,0]),g),b);j=k(j,k(l.concat([0,0,0]),g));j=a.encrypt(k(j,k(c,h(c))));
+if(d.length)j=k(j,f?d:sjcl.mode.ocb2.pmac(a,d));return m.concat(i.concat(l,i.clamp(j,e)))},decrypt:function(a,b,c,d,e,f){if(sjcl.bitArray.bitLength(c)!==128)throw new sjcl.exception.invalid("ocb iv must be 128 bits");e=e||64;var g=sjcl.mode.ocb2.B,h=sjcl.bitArray,i=h.e,k=[0,0,0,0],j=g(a.encrypt(c)),l,m,n=sjcl.bitArray.bitLength(b)-e,o=[];d=d||[];for(c=0;c+4<n/32;c+=4){l=i(j,a.decrypt(i(j,b.slice(c,c+4))));k=i(k,l);o=o.concat(l);j=g(j)}m=n-c*32;l=a.encrypt(i(j,[0,0,0,m]));l=i(l,h.clamp(b.slice(c),
+m).concat([0,0,0]));k=i(k,l);k=a.encrypt(i(k,i(j,g(j))));if(d.length)k=i(k,f?d:sjcl.mode.ocb2.pmac(a,d));if(!h.equal(h.clamp(k,e),h.bitSlice(b,n)))throw new sjcl.exception.corrupt("ocb: tag doesn't match");return o.concat(h.clamp(l,m))},pmac:function(a,b){var c,d=sjcl.mode.ocb2.B,e=sjcl.bitArray,f=e.e,g=[0,0,0,0],h=a.encrypt([0,0,0,0]);h=f(h,d(d(h)));for(c=0;c+4<b.length;c+=4){h=d(h);g=f(g,a.encrypt(f(h,b.slice(c,c+4))))}b=b.slice(c);if(e.bitLength(b)<128){h=f(h,d(h));b=e.concat(b,[2147483648|0,0,
+0,0])}g=f(g,b);return a.encrypt(f(d(f(h,d(h))),g))},B:function(a){return[a[0]<<1^a[1]>>>31,a[1]<<1^a[2]>>>31,a[2]<<1^a[3]>>>31,a[3]<<1^(a[0]>>>31)*135]}};if(sjcl.beware===undefined)sjcl.beware={};
+sjcl.beware["CBC mode is dangerous because it doesn't protect message integrity."]=function(){sjcl.mode.cbc={name:"cbc",encrypt:function(a,b,c,d){if(d&&d.length)throw new sjcl.exception.invalid("cbc can't authenticate data");if(sjcl.bitArray.bitLength(c)!==128)throw new sjcl.exception.invalid("cbc iv must be 128 bits");var e=sjcl.bitArray,f=e.e,g=e.bitLength(b),h=0,i=[];if(g&7)throw new sjcl.exception.invalid("pkcs#5 padding only works for multiples of a byte");for(d=0;h+128<=g;d+=4,h+=128){c=a.encrypt(f(c,
+b.slice(d,d+4)));i.splice(d,0,c[0],c[1],c[2],c[3])}g=(16-(g>>3&15))*0x1010101;c=a.encrypt(f(c,e.concat(b,[g,g,g,g]).slice(d,d+4)));i.splice(d,0,c[0],c[1],c[2],c[3]);return i},decrypt:function(a,b,c,d){if(d&&d.length)throw new sjcl.exception.invalid("cbc can't authenticate data");if(sjcl.bitArray.bitLength(c)!==128)throw new sjcl.exception.invalid("cbc iv must be 128 bits");if(sjcl.bitArray.bitLength(b)&127||!b.length)throw new sjcl.exception.corrupt("cbc ciphertext must be a positive multiple of the block size");
+var e=sjcl.bitArray,f=e.e,g,h=[];for(d=0;d<b.length;d+=4){g=b.slice(d,d+4);c=f(c,a.decrypt(g));h.splice(d,0,c[0],c[1],c[2],c[3]);c=g}g=h[d-1]&255;if(g==0||g>16)throw new sjcl.exception.corrupt("pkcs#5 padding corrupt");c=g*0x1010101;if(!e.equal(e.bitSlice([c,c,c,c],0,g*8),e.bitSlice(h,h.length*32-g*8,h.length*32)))throw new sjcl.exception.corrupt("pkcs#5 padding corrupt");return e.bitSlice(h,0,h.length*32-g*8)}}};
+sjcl.misc.hmac=function(a,b){this.M=b=b||sjcl.hash.sha256;var c=[[],[]],d=b.prototype.blockSize/32;this.l=[new b,new b];if(a.length>d)a=b.hash(a);for(b=0;b<d;b++){c[0][b]=a[b]^909522486;c[1][b]=a[b]^1549556828}this.l[0].update(c[0]);this.l[1].update(c[1])};sjcl.misc.hmac.prototype.encrypt=sjcl.misc.hmac.prototype.mac=function(a){a=(new this.M(this.l[0])).update(a).finalize();return(new this.M(this.l[1])).update(a).finalize()};
+sjcl.misc.pbkdf2=function(a,b,c,d,e){c=c||1E3;if(d<0||c<0)throw sjcl.exception.invalid("invalid params to pbkdf2");if(typeof a==="string")a=sjcl.codec.utf8String.toBits(a);e=e||sjcl.misc.hmac;a=new e(a);var f,g,h,i,k=[],j=sjcl.bitArray;for(i=1;32*k.length<(d||1);i++){e=f=a.encrypt(j.concat(b,[i]));for(g=1;g<c;g++){f=a.encrypt(f);for(h=0;h<f.length;h++)e[h]^=f[h]}k=k.concat(e)}if(d)k=j.clamp(k,d);return k};
+sjcl.random={randomWords:function(a,b){var c=[];b=this.isReady(b);var d;if(b===0)throw new sjcl.exception.notReady("generator isn't seeded");else b&2&&this.U(!(b&1));for(b=0;b<a;b+=4){(b+1)%0x10000===0&&this.L();d=this.w();c.push(d[0],d[1],d[2],d[3])}this.L();return c.slice(0,a)},setDefaultParanoia:function(a){this.t=a},addEntropy:function(a,b,c){c=c||"user";var d,e,f=(new Date).valueOf(),g=this.q[c],h=this.isReady(),i=0;d=this.G[c];if(d===undefined)d=this.G[c]=this.R++;if(g===undefined)g=this.q[c]=
+0;this.q[c]=(this.q[c]+1)%this.b.length;switch(typeof a){case "number":if(b===undefined)b=1;this.b[g].update([d,this.u++,1,b,f,1,a|0]);break;case "object":c=Object.prototype.toString.call(a);if(c==="[object Uint32Array]"){e=[];for(c=0;c<a.length;c++)e.push(a[c]);a=e}else{if(c!=="[object Array]")i=1;for(c=0;c<a.length&&!i;c++)if(typeof a[c]!="number")i=1}if(!i){if(b===undefined)for(c=b=0;c<a.length;c++)for(e=a[c];e>0;){b++;e>>>=1}this.b[g].update([d,this.u++,2,b,f,a.length].concat(a))}break;case "string":if(b===
+undefined)b=a.length;this.b[g].update([d,this.u++,3,b,f,a.length]);this.b[g].update(a);break;default:i=1}if(i)throw new sjcl.exception.bug("random: addEntropy only supports number, array of numbers or string");this.k[g]+=b;this.g+=b;if(h===0){this.isReady()!==0&&this.K("seeded",Math.max(this.h,this.g));this.K("progress",this.getProgress())}},isReady:function(a){a=this.C[a!==undefined?a:this.t];return this.h&&this.h>=a?this.k[0]>80&&(new Date).valueOf()>this.O?3:1:this.g>=a?2:0},getProgress:function(a){a=
+this.C[a?a:this.t];return this.h>=a?1:this.g>a?1:this.g/a},startCollectors:function(){if(!this.m){if(window.addEventListener){window.addEventListener("load",this.o,false);window.addEventListener("mousemove",this.p,false)}else if(document.attachEvent){document.attachEvent("onload",this.o);document.attachEvent("onmousemove",this.p)}else throw new sjcl.exception.bug("can't attach event");this.m=true}},stopCollectors:function(){if(this.m){if(window.removeEventListener){window.removeEventListener("load",
+this.o,false);window.removeEventListener("mousemove",this.p,false)}else if(window.detachEvent){window.detachEvent("onload",this.o);window.detachEvent("onmousemove",this.p)}this.m=false}},addEventListener:function(a,b){this.r[a][this.Q++]=b},removeEventListener:function(a,b){var c;a=this.r[a];var d=[];for(c in a)a.hasOwnProperty(c)&&a[c]===b&&d.push(c);for(b=0;b<d.length;b++){c=d[b];delete a[c]}},b:[new sjcl.hash.sha256],k:[0],A:0,q:{},u:0,G:{},R:0,h:0,g:0,O:0,a:[0,0,0,0,0,0,0,0],d:[0,0,0,0],s:undefined,
+t:6,m:false,r:{progress:{},seeded:{}},Q:0,C:[0,48,64,96,128,192,0x100,384,512,768,1024],w:function(){for(var a=0;a<4;a++){this.d[a]=this.d[a]+1|0;if(this.d[a])break}return this.s.encrypt(this.d)},L:function(){this.a=this.w().concat(this.w());this.s=new sjcl.cipher.aes(this.a)},T:function(a){this.a=sjcl.hash.sha256.hash(this.a.concat(a));this.s=new sjcl.cipher.aes(this.a);for(a=0;a<4;a++){this.d[a]=this.d[a]+1|0;if(this.d[a])break}},U:function(a){var b=[],c=0,d;this.O=b[0]=(new Date).valueOf()+3E4;for(d=
+0;d<16;d++)b.push(Math.random()*0x100000000|0);for(d=0;d<this.b.length;d++){b=b.concat(this.b[d].finalize());c+=this.k[d];this.k[d]=0;if(!a&&this.A&1<<d)break}if(this.A>=1<<this.b.length){this.b.push(new sjcl.hash.sha256);this.k.push(0)}this.g-=c;if(c>this.h)this.h=c;this.A++;this.T(b)},p:function(a){sjcl.random.addEntropy([a.x||a.clientX||a.offsetX||0,a.y||a.clientY||a.offsetY||0],2,"mouse")},o:function(){sjcl.random.addEntropy((new Date).valueOf(),2,"loadtime")},K:function(a,b){var c;a=sjcl.random.r[a];
+var d=[];for(c in a)a.hasOwnProperty(c)&&d.push(a[c]);for(c=0;c<d.length;c++)d[c](b)}};try{var s=new Uint32Array(32);crypto.getRandomValues(s);sjcl.random.addEntropy(s,1024,"crypto['getRandomValues']")}catch(t){}
+sjcl.json={defaults:{v:1,iter:1E3,ks:128,ts:64,mode:"ccm",adata:"",cipher:"aes"},encrypt:function(a,b,c,d){c=c||{};d=d||{};var e=sjcl.json,f=e.c({iv:sjcl.random.randomWords(4,0)},e.defaults),g;e.c(f,c);c=f.adata;if(typeof f.salt==="string")f.salt=sjcl.codec.base64.toBits(f.salt);if(typeof f.iv==="string")f.iv=sjcl.codec.base64.toBits(f.iv);if(!sjcl.mode[f.mode]||!sjcl.cipher[f.cipher]||typeof a==="string"&&f.iter<=100||f.ts!==64&&f.ts!==96&&f.ts!==128||f.ks!==128&&f.ks!==192&&f.ks!==0x100||f.iv.length<
+2||f.iv.length>4)throw new sjcl.exception.invalid("json encrypt: invalid parameters");if(typeof a==="string"){g=sjcl.misc.cachedPbkdf2(a,f);a=g.key.slice(0,f.ks/32);f.salt=g.salt}if(typeof b==="string")b=sjcl.codec.utf8String.toBits(b);if(typeof c==="string")c=sjcl.codec.utf8String.toBits(c);g=new sjcl.cipher[f.cipher](a);e.c(d,f);d.key=a;f.ct=sjcl.mode[f.mode].encrypt(g,b,f.iv,c,f.ts);return e.encode(f)},decrypt:function(a,b,c,d){c=c||{};d=d||{};var e=sjcl.json;b=e.c(e.c(e.c({},e.defaults),e.decode(b)),
+c,true);var f;c=b.adata;if(typeof b.salt==="string")b.salt=sjcl.codec.base64.toBits(b.salt);if(typeof b.iv==="string")b.iv=sjcl.codec.base64.toBits(b.iv);if(!sjcl.mode[b.mode]||!sjcl.cipher[b.cipher]||typeof a==="string"&&b.iter<=100||b.ts!==64&&b.ts!==96&&b.ts!==128||b.ks!==128&&b.ks!==192&&b.ks!==0x100||!b.iv||b.iv.length<2||b.iv.length>4)throw new sjcl.exception.invalid("json decrypt: invalid parameters");if(typeof a==="string"){f=sjcl.misc.cachedPbkdf2(a,b);a=f.key.slice(0,b.ks/32);b.salt=f.salt}if(typeof c===
+"string")c=sjcl.codec.utf8String.toBits(c);f=new sjcl.cipher[b.cipher](a);c=sjcl.mode[b.mode].decrypt(f,b.ct,b.iv,c,b.ts);e.c(d,b);d.key=a;return sjcl.codec.utf8String.fromBits(c)},encode:function(a){var b,c="{",d="";for(b in a)if(a.hasOwnProperty(b)){if(!b.match(/^[a-z0-9]+$/i))throw new sjcl.exception.invalid("json encode: invalid property name");c+=d+'"'+b+'":';d=",";switch(typeof a[b]){case "number":case "boolean":c+=a[b];break;case "string":c+='"'+escape(a[b])+'"';break;case "object":c+='"'+
+sjcl.codec.base64.fromBits(a[b],1)+'"';break;default:throw new sjcl.exception.bug("json encode: unsupported type");}}return c+"}"},decode:function(a){a=a.replace(/\s/g,"");if(!a.match(/^\{.*\}$/))throw new sjcl.exception.invalid("json decode: this isn't json!");a=a.replace(/^\{|\}$/g,"").split(/,/);var b={},c,d;for(c=0;c<a.length;c++){if(!(d=a[c].match(/^(?:(["']?)([a-z][a-z0-9]*)\1):(?:(\d+)|"([a-z0-9+\/%*_.@=\-]*)")$/i)))throw new sjcl.exception.invalid("json decode: this isn't json!");b[d[2]]=
+d[3]?parseInt(d[3],10):d[2].match(/^(ct|salt|iv)$/)?sjcl.codec.base64.toBits(d[4]):unescape(d[4])}return b},c:function(a,b,c){if(a===undefined)a={};if(b===undefined)return a;var d;for(d in b)if(b.hasOwnProperty(d)){if(c&&a[d]!==undefined&&a[d]!==b[d])throw new sjcl.exception.invalid("required parameter overridden");a[d]=b[d]}return a},W:function(a,b){var c={},d;for(d in a)if(a.hasOwnProperty(d)&&a[d]!==b[d])c[d]=a[d];return c},V:function(a,b){var c={},d;for(d=0;d<b.length;d++)if(a[b[d]]!==undefined)c[b[d]]=
+a[b[d]];return c}};sjcl.encrypt=sjcl.json.encrypt;sjcl.decrypt=sjcl.json.decrypt;sjcl.misc.S={};sjcl.misc.cachedPbkdf2=function(a,b){var c=sjcl.misc.S,d;b=b||{};d=b.iter||1E3;c=c[a]=c[a]||{};d=c[d]=c[d]||{firstSalt:b.salt&&b.salt.length?b.salt.slice(0):sjcl.random.randomWords(2,0)};c=b.salt===undefined?d.firstSalt:b.salt;d[c]=d[c]||sjcl.misc.pbkdf2(a,c,b.iter);return{key:d[c].slice(0),salt:c.slice(0)}};

1 comment on commit 1f95c56

@psawaya
Mozilla member

Is sjcl-with-cbc.js available unminified? I know the editors of AMO don't like minified JS in add-ons, and minification doesn't matter as much for browser extensions.

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