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Added IndexedDB & support for iSafari browser

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This commit is contained in:
mhelander 2017-09-15 11:33:48 +03:00
parent f7fb93ffad
commit 61cf9095b6
1 changed files with 23 additions and 19 deletions
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42
sea.js
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@ -7,7 +7,7 @@
/* THIS IS AN EARLY ALPHA!!! */
var nodeCrypto = require('crypto');
var crypto = require('crypto');
var ecCrypto = require('eccrypto');
var Gun = (typeof window !== 'undefined' ? window : global).Gun || require('./gun');
@ -16,25 +16,29 @@
var Buffer = require('buffer').Buffer;
}
var crypto, TextEncoder, TextDecoder, localStorage, sessionStorage, getRandomBytes;
var subtle, TextEncoder, TextDecoder, getRandomBytes;
var localStorage, sessionStorage, indexedDB;
if(typeof window !== 'undefined'){
crypto = window.crypto || window.msCrypto;
getRandomBytes = function(len){ return crypto.getRandomValues(new Buffer(len)) };
var wc = window.crypto || window.msCrypto; // STD or M$
subtle = wc.subtle || wc.webkitSubtle; // STD or iSafari
getRandomBytes = function(len){ return wc.getRandomValues(new Buffer(len)) };
TextEncoder = window.TextEncoder;
TextDecoder = window.TextDecoder;
localStorage = window.localStorage;
sessionStorage = window.sessionStorage;
indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB || window.shimIndexedDB;
} else {
crypto = { subtle: require('subtle') }; // Web Cryptography API for NodeJS
getRandomBytes = function(len){ return nodeCrypto.randomBytes(len) };
subtle = require('subtle'); // Web Cryptography API for NodeJS
getRandomBytes = function(len){ return crypto.randomBytes(len) };
TextEncoder = require('text-encoding').TextEncoder;
TextDecoder = require('text-encoding').TextDecoder;
// Let's have Storage for NodeJS / testing
localStorage = new require('node-localstorage').LocalStorage('local');
sessionStorage = new require('node-localstorage').LocalStorage('session');
indexedDB = undefined; // TODO: simulate IndexedDB in NodeJS but how?
}
console.log('indexedDB:', indexedDB)
// Encryption parameters - TODO: maybe to be changed via init?
var pbkdf2 = {
hash: 'SHA-256', // Was 'SHA-1'
@ -363,7 +367,7 @@
// Takes data (defaults as Buffer) and returns 'md5' hash
function hashData(data,intype,outtype){
return nodeCrypto.createHash(outtype || 'md5').update(data, intype).digest();
return crypto.createHash(outtype || 'md5').update(data, intype).digest();
}
// This internal func returns hashed data for signing
@ -764,10 +768,10 @@
// now wrap the various AES, ECDSA, PBKDF2 functions we called above.
SEA.proof = function(pass,salt,cb){
var doIt = (typeof window !== 'undefined' && function(resolve, reject){
crypto.subtle.importKey( // For browser crypto.subtle works fine
subtle.importKey( // For browser subtle works fine
'raw', new TextEncoder().encode(pass), {name: 'PBKDF2'}, false, ['deriveBits']
).then(function(key){
return crypto.subtle.deriveBits({
return subtle.deriveBits({
name: 'PBKDF2',
iterations: pbkdf2.iter,
salt: new TextEncoder().encode(salt),
@ -779,7 +783,7 @@
}).then(resolve).catch(function(e){ Gun.log(e); reject(e) });
}) || function(resolve, reject){ // For NodeJS crypto.pkdf2 rocks
try{
var hash = nodeCrypto.pbkdf2Sync(pass,new Buffer(salt, 'utf8'),pbkdf2.iter,pbkdf2.ks,nHash);
var hash = crypto.pbkdf2Sync(pass,new Buffer(salt, 'utf8'),pbkdf2.iter,pbkdf2.ks,nHash);
pass = getRandomBytes(pass.length);
resolve(hash && hash.toString('base64'));
}catch(e){ reject(e) };
@ -829,10 +833,10 @@
var key = makeKey(p, s);
m = (m.slice && m) || JSON.stringify(m);
if(typeof window !== 'undefined'){ // Browser doesn't run createCipheriv
crypto.subtle.importKey('raw', key, 'AES-CBC', false, ['encrypt'])
subtle.importKey('raw', key, 'AES-CBC', false, ['encrypt'])
.then(function(aesKey){
key = getRandomBytes(key.length);
crypto.subtle.encrypt({
subtle.encrypt({
name: 'AES-CBC', iv: iv
}, aesKey, new TextEncoder().encode(m)).then(function(ct){
aesKey = getRandomBytes(32);
@ -840,9 +844,9 @@
return JSON.stringify(r);
}).then(resolve).catch(function(e){ Gun.log(e); reject(e) });
}).catch(function(e){ Gun.log(e); reject(e)} );
} else { // NodeJS doesn't support crypto.subtle.importKey properly
} else { // NodeJS doesn't support subtle.importKey properly
try{
var cipher = nodeCrypto.createCipheriv(aes.enc, key, iv);
var cipher = crypto.createCipheriv(aes.enc, key, iv);
r.ct = cipher.update(m, 'utf8', 'base64') + cipher.final('base64');
key = getRandomBytes(key.length);
}catch(e){ Gun.log(e); return reject(e) }
@ -857,10 +861,10 @@
var key = makeKey(p, new Buffer(m.s, 'hex'));
var iv = new Buffer(m.iv, 'hex');
if(typeof window !== 'undefined'){ // Browser doesn't run createDecipheriv
crypto.subtle.importKey('raw', key, 'AES-CBC', false, ['decrypt'])
subtle.importKey('raw', key, 'AES-CBC', false, ['decrypt'])
.then(function(aesKey){
key = getRandomBytes(key.length);
crypto.subtle.decrypt({
subtle.decrypt({
name: 'AES-CBC', iv: iv
}, aesKey, new Buffer(m.ct, 'base64')).then(function(ct){
aesKey = getRandomBytes(32);
@ -869,9 +873,9 @@
}catch(e){ return ctUtf8 }
}).then(resolve).catch(function(e){Gun.log(e); reject(e)});
}).catch(function(e){Gun.log(e); reject(e)});
} else { // NodeJS doesn't support crypto.subtle.importKey properly
} else { // NodeJS doesn't support subtle.importKey properly
try{
var decipher = nodeCrypto.createDecipheriv(aes.enc, key, iv);
var decipher = crypto.createDecipheriv(aes.enc, key, iv);
r = decipher.update(m.ct, 'base64', 'utf8') + decipher.final('utf8');
key = getRandomBytes(key.length);
}catch(e){ Gun.log(e); return reject(e) }