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sea.js
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sea.js
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;(function(){
/* UNBUILD */
function USE(arg, req){
return req? require(arg) : arg.slice? USE[R(arg)] : function(mod, path){
arg(mod = {exports: {}});
USE[R(path)] = mod.exports;
}
function R(p){
return p.split('/').slice(-1).toString().replace('.js','');
}
}
if(typeof module !== "undefined"){ var MODULE = module }
/* UNBUILD */
;USE(function(module){
// Security, Encryption, and Authorization: SEA.js
// MANDATORY READING: https://gun.eco/explainers/data/security.html
// IT IS IMPLEMENTED IN A POLYFILL/SHIM APPROACH.
// THIS IS AN EARLY ALPHA!
if(typeof window !== "undefined"){ module.window = window }
var tmp = module.window || module;
var SEA = tmp.SEA || {};
if(SEA.window = module.window){ SEA.window.SEA = SEA }
try{ if(typeof MODULE !== "undefined"){ MODULE.exports = SEA } }catch(e){}
module.exports = SEA;
})(USE, './root');
;USE(function(module){
var SEA = USE('./root');
try{ if(SEA.window){
if(location.protocol.indexOf('s') < 0
&& location.host.indexOf('localhost') < 0
&& location.protocol.indexOf('file:') < 0){
location.protocol = 'https:'; // WebCrypto does NOT work without HTTPS!
}
} }catch(e){}
})(USE, './https');
;USE(function(module){
if(typeof btoa === "undefined"){
if(typeof Buffer === "undefined") {
global.Buffer = require("buffer").Buffer
}
global.btoa = function (data) { return Buffer.from(data, "binary").toString("base64"); };
global.atob = function (data) { return Buffer.from(data, "base64").toString("binary"); };
}
})(USE, './base64');
;USE(function(module){
USE('./base64');
// This is Array extended to have .toString(['utf8'|'hex'|'base64'])
function SeaArray() {}
Object.assign(SeaArray, { from: Array.from })
SeaArray.prototype = Object.create(Array.prototype)
SeaArray.prototype.toString = function(enc, start, end) { enc = enc || 'utf8'; start = start || 0;
const length = this.length
if (enc === 'hex') {
const buf = new Uint8Array(this)
return [ ...Array(((end && (end + 1)) || length) - start).keys()]
.map((i) => buf[ i + start ].toString(16).padStart(2, '0')).join('')
}
if (enc === 'utf8') {
return Array.from(
{ length: (end || length) - start },
(_, i) => String.fromCharCode(this[ i + start])
).join('')
}
if (enc === 'base64') {
return btoa(this)
}
}
module.exports = SeaArray;
})(USE, './array');
;USE(function(module){
USE('./base64');
// This is Buffer implementation used in SEA. Functionality is mostly
// compatible with NodeJS 'safe-buffer' and is used for encoding conversions
// between binary and 'hex' | 'utf8' | 'base64'
// See documentation and validation for safe implementation in:
// https://github.com/feross/safe-buffer#update
var SeaArray = USE('./array');
function SafeBuffer(...props) {
console.warn('new SafeBuffer() is depreciated, please use SafeBuffer.from()')
return SafeBuffer.from(...props)
}
SafeBuffer.prototype = Object.create(Array.prototype)
Object.assign(SafeBuffer, {
// (data, enc) where typeof data === 'string' then enc === 'utf8'|'hex'|'base64'
from() {
if (!Object.keys(arguments).length || arguments[0]==null) {
throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
}
const input = arguments[0]
let buf
if (typeof input === 'string') {
const enc = arguments[1] || 'utf8'
if (enc === 'hex') {
const bytes = input.match(/([\da-fA-F]{2})/g)
.map((byte) => parseInt(byte, 16))
if (!bytes || !bytes.length) {
throw new TypeError('Invalid first argument for type \'hex\'.')
}
buf = SeaArray.from(bytes)
} else if (enc === 'utf8') {
const length = input.length
const words = new Uint16Array(length)
Array.from({ length: length }, (_, i) => words[i] = input.charCodeAt(i))
buf = SeaArray.from(words)
} else if (enc === 'base64') {
const dec = atob(input)
const length = dec.length
const bytes = new Uint8Array(length)
Array.from({ length: length }, (_, i) => bytes[i] = dec.charCodeAt(i))
buf = SeaArray.from(bytes)
} else if (enc === 'binary') {
buf = SeaArray.from(input)
} else {
console.info('SafeBuffer.from unknown encoding: '+enc)
}
return buf
}
const byteLength = input.byteLength // what is going on here? FOR MARTTI
const length = input.byteLength ? input.byteLength : input.length
if (length) {
let buf
if (input instanceof ArrayBuffer) {
buf = new Uint8Array(input)
}
return SeaArray.from(buf || input)
}
},
// This is 'safe-buffer.alloc' sans encoding support
alloc(length, fill = 0 /*, enc*/ ) {
return SeaArray.from(new Uint8Array(Array.from({ length: length }, () => fill)))
},
// This is normal UNSAFE 'buffer.alloc' or 'new Buffer(length)' - don't use!
allocUnsafe(length) {
return SeaArray.from(new Uint8Array(Array.from({ length : length })))
},
// This puts together array of array like members
concat(arr) { // octet array
if (!Array.isArray(arr)) {
throw new TypeError('First argument must be Array containing ArrayBuffer or Uint8Array instances.')
}
return SeaArray.from(arr.reduce((ret, item) => ret.concat(Array.from(item)), []))
}
})
SafeBuffer.prototype.from = SafeBuffer.from
SafeBuffer.prototype.toString = SeaArray.prototype.toString
module.exports = SafeBuffer;
})(USE, './buffer');
;USE(function(module){
const SEA = USE('./root')
const Buffer = USE('./buffer')
const api = {Buffer: Buffer}
var o = {};
if(SEA.window){
api.crypto = window.crypto || window.msCrypto
api.subtle = (api.crypto||o).subtle || (api.crypto||o).webkitSubtle;
api.TextEncoder = window.TextEncoder;
api.TextDecoder = window.TextDecoder;
api.random = (len) => Buffer.from(api.crypto.getRandomValues(new Uint8Array(Buffer.alloc(len))));
}
if(!api.TextDecoder)
{
const { TextEncoder, TextDecoder } = require('text-encoding');
api.TextDecoder = TextDecoder;
api.TextEncoder = TextEncoder;
}
if(!api.crypto)
{
try
{
var crypto = USE('crypto', 1);
Object.assign(api, {
crypto,
random: (len) => Buffer.from(crypto.randomBytes(len))
});
const { Crypto: WebCrypto } = USE('@peculiar/webcrypto', 1);
api.ossl = api.subtle = new WebCrypto({directory: 'ossl'}).subtle // ECDH
}
catch(e){
console.log("text-encoding and @peculiar/webcrypto may not be included by default, please add it to your package.json!");
}}
module.exports = api
})(USE, './shim');
;USE(function(module){
var SEA = USE('./root');
var Buffer = USE('./buffer');
var s = {};
s.pbkdf2 = {hash: {name : 'SHA-256'}, iter: 100000, ks: 64};
s.ecdsa = {
pair: {name: 'ECDSA', namedCurve: 'P-256'},
sign: {name: 'ECDSA', hash: {name: 'SHA-256'}}
};
s.ecdh = {name: 'ECDH', namedCurve: 'P-256'};
// This creates Web Cryptography API compliant JWK for sign/verify purposes
s.jwk = function(pub, d){ // d === priv
pub = pub.split('.');
var x = pub[0], y = pub[1];
var jwk = {kty: "EC", crv: "P-256", x: x, y: y, ext: true};
jwk.key_ops = d ? ['sign'] : ['verify'];
if(d){ jwk.d = d }
return jwk;
};
s.keyToJwk = function(keyBytes) {
const keyB64 = keyBytes.toString('base64');
const k = keyB64.replace(/\+/g, '-').replace(/\//g, '_').replace(/\=/g, '');
return { kty: 'oct', k: k, ext: false, alg: 'A256GCM' };
}
s.recall = {
validity: 12 * 60 * 60, // internally in seconds : 12 hours
hook: function(props){ return props } // { iat, exp, alias, remember } // or return new Promise((resolve, reject) => resolve(props)
};
s.check = function(t){ return (typeof t == 'string') && ('SEA{' === t.slice(0,4)) }
s.parse = function p(t){ try {
var yes = (typeof t == 'string');
if(yes && 'SEA{' === t.slice(0,4)){ t = t.slice(3) }
return yes ? JSON.parse(t) : t;
} catch (e) {}
return t;
}
SEA.opt = s;
module.exports = s
})(USE, './settings');
;USE(function(module){
var shim = USE('./shim');
module.exports = async function(d, o){
var t = (typeof d == 'string')? d : JSON.stringify(d);
var hash = await shim.subtle.digest({name: o||'SHA-256'}, new shim.TextEncoder().encode(t));
return shim.Buffer.from(hash);
}
})(USE, './sha256');
;USE(function(module){
// This internal func returns SHA-1 hashed data for KeyID generation
const __shim = USE('./shim')
const subtle = __shim.subtle
const ossl = __shim.ossl ? __shim.ossl : subtle
const sha1hash = (b) => ossl.digest({name: 'SHA-1'}, new ArrayBuffer(b))
module.exports = sha1hash
})(USE, './sha1');
;USE(function(module){
var SEA = USE('./root');
var shim = USE('./shim');
var S = USE('./settings');
var sha = USE('./sha256');
var u;
SEA.work = SEA.work || (async (data, pair, cb, opt) => { try { // used to be named `proof`
var salt = (pair||{}).epub || pair; // epub not recommended, salt should be random!
var opt = opt || {};
if(salt instanceof Function){
cb = salt;
salt = u;
}
data = (typeof data == 'string')? data : JSON.stringify(data);
if('sha' === (opt.name||'').toLowerCase().slice(0,3)){
var rsha = shim.Buffer.from(await sha(data, opt.name), 'binary').toString(opt.encode || 'base64')
if(cb){ try{ cb(rsha) }catch(e){console.log(e)} }
return rsha;
}
salt = salt || shim.random(9);
var key = await (shim.ossl || shim.subtle).importKey('raw', new shim.TextEncoder().encode(data), {name: opt.name || 'PBKDF2'}, false, ['deriveBits']);
var work = await (shim.ossl || shim.subtle).deriveBits({
name: opt.name || 'PBKDF2',
iterations: opt.iterations || S.pbkdf2.iter,
salt: new shim.TextEncoder().encode(opt.salt || salt),
hash: opt.hash || S.pbkdf2.hash,
}, key, opt.length || (S.pbkdf2.ks * 8))
data = shim.random(data.length) // Erase data in case of passphrase
var r = shim.Buffer.from(work, 'binary').toString(opt.encode || 'base64')
if(cb){ try{ cb(r) }catch(e){console.log(e)} }
return r;
} catch(e) {
console.log(e);
SEA.err = e;
if(SEA.throw){ throw e }
if(cb){ cb() }
return;
}});
module.exports = SEA.work;
})(USE, './work');
;USE(function(module){
var SEA = USE('./root');
var shim = USE('./shim');
var S = USE('./settings');
SEA.name = SEA.name || (async (cb, opt) => { try {
if(cb){ try{ cb() }catch(e){console.log(e)} }
return;
} catch(e) {
console.log(e);
SEA.err = e;
if(SEA.throw){ throw e }
if(cb){ cb() }
return;
}});
//SEA.pair = async (data, proof, cb) => { try {
SEA.pair = SEA.pair || (async (cb, opt) => { try {
var ecdhSubtle = shim.ossl || shim.subtle;
// First: ECDSA keys for signing/verifying...
var sa = await shim.subtle.generateKey({name: 'ECDSA', namedCurve: 'P-256'}, true, [ 'sign', 'verify' ])
.then(async (keys) => {
// privateKey scope doesn't leak out from here!
//const { d: priv } = await shim.subtle.exportKey('jwk', keys.privateKey)
var key = {};
key.priv = (await shim.subtle.exportKey('jwk', keys.privateKey)).d;
var pub = await shim.subtle.exportKey('jwk', keys.publicKey);
//const pub = Buff.from([ x, y ].join(':')).toString('base64') // old
key.pub = pub.x+'.'+pub.y; // new
// x and y are already base64
// pub is UTF8 but filename/URL safe (https://www.ietf.org/rfc/rfc3986.txt)
// but split on a non-base64 letter.
return key;
})
// To include PGPv4 kind of keyId:
// const pubId = await SEA.keyid(keys.pub)
// Next: ECDH keys for encryption/decryption...
try{
var dh = await ecdhSubtle.generateKey({name: 'ECDH', namedCurve: 'P-256'}, true, ['deriveKey'])
.then(async (keys) => {
// privateKey scope doesn't leak out from here!
var key = {};
key.epriv = (await ecdhSubtle.exportKey('jwk', keys.privateKey)).d;
var pub = await ecdhSubtle.exportKey('jwk', keys.publicKey);
//const epub = Buff.from([ ex, ey ].join(':')).toString('base64') // old
key.epub = pub.x+'.'+pub.y; // new
// ex and ey are already base64
// epub is UTF8 but filename/URL safe (https://www.ietf.org/rfc/rfc3986.txt)
// but split on a non-base64 letter.
return key;
})
}catch(e){
if(SEA.window){ throw e }
if(e == 'Error: ECDH is not a supported algorithm'){ console.log('Ignoring ECDH...') }
else { throw e }
} dh = dh || {};
var r = { pub: sa.pub, priv: sa.priv, /* pubId, */ epub: dh.epub, epriv: dh.epriv }
if(cb){ try{ cb(r) }catch(e){console.log(e)} }
return r;
} catch(e) {
console.log(e);
SEA.err = e;
if(SEA.throw){ throw e }
if(cb){ cb() }
return;
}});
module.exports = SEA.pair;
})(USE, './pair');
;USE(function(module){
var SEA = USE('./root');
var shim = USE('./shim');
var S = USE('./settings');
var sha = USE('./sha256');
var u;
SEA.sign = SEA.sign || (async (data, pair, cb, opt) => { try {
opt = opt || {};
if(!(pair||opt).priv){
pair = await SEA.I(null, {what: data, how: 'sign', why: opt.why});
}
if(u === data){ throw '`undefined` not allowed.' }
var json = S.parse(data);
var check = opt.check = opt.check || json;
if(SEA.verify && (SEA.opt.check(check) || (check && check.s && check.m))
&& u !== await SEA.verify(check, pair)){ // don't sign if we already signed it.
var r = S.parse(check);
if(!opt.raw){ r = 'SEA'+JSON.stringify(r) }
if(cb){ try{ cb(r) }catch(e){console.log(e)} }
return r;
}
var pub = pair.pub;
var priv = pair.priv;
var jwk = S.jwk(pub, priv);
var hash = await sha(json);
var sig = await (shim.ossl || shim.subtle).importKey('jwk', jwk, {name: 'ECDSA', namedCurve: 'P-256'}, false, ['sign'])
.then((key) => (shim.ossl || shim.subtle).sign({name: 'ECDSA', hash: {name: 'SHA-256'}}, key, new Uint8Array(hash))) // privateKey scope doesn't leak out from here!
var r = {m: json, s: shim.Buffer.from(sig, 'binary').toString(opt.encode || 'base64')}
if(!opt.raw){ r = 'SEA'+JSON.stringify(r) }
if(cb){ try{ cb(r) }catch(e){console.log(e)} }
return r;
} catch(e) {
console.log(e);
SEA.err = e;
if(SEA.throw){ throw e }
if(cb){ cb() }
return;
}});
module.exports = SEA.sign;
})(USE, './sign');
;USE(function(module){
var SEA = USE('./root');
var shim = USE('./shim');
var S = USE('./settings');
var sha = USE('./sha256');
var u;
SEA.verify = SEA.verify || (async (data, pair, cb, opt) => { try {
var json = S.parse(data);
if(false === pair){ // don't verify!
var raw = S.parse(json.m);
if(cb){ try{ cb(raw) }catch(e){console.log(e)} }
return raw;
}
opt = opt || {};
// SEA.I // verify is free! Requires no user permission.
var pub = pair.pub || pair;
var key = SEA.opt.slow_leak? await SEA.opt.slow_leak(pub) : await (shim.ossl || shim.subtle).importKey('jwk', S.jwk(pub), {name: 'ECDSA', namedCurve: 'P-256'}, false, ['verify']);
var hash = await sha(json.m);
var buf, sig, check, tmp; try{
buf = shim.Buffer.from(json.s, opt.encode || 'base64'); // NEW DEFAULT!
sig = new Uint8Array(buf);
check = await (shim.ossl || shim.subtle).verify({name: 'ECDSA', hash: {name: 'SHA-256'}}, key, sig, new Uint8Array(hash));
if(!check){ throw "Signature did not match." }
}catch(e){
if(SEA.opt.fallback){
return await SEA.opt.fall_verify(data, pair, cb, opt);
}
}
var r = check? S.parse(json.m) : u;
if(cb){ try{ cb(r) }catch(e){console.log(e)} }
return r;
} catch(e) {
console.log(e); // mismatched owner FOR MARTTI
SEA.err = e;
if(SEA.throw){ throw e }
if(cb){ cb() }
return;
}});
module.exports = SEA.verify;
// legacy & ossl leak mitigation:
var knownKeys = {};
var keyForPair = SEA.opt.slow_leak = pair => {
if (knownKeys[pair]) return knownKeys[pair];
var jwk = S.jwk(pair);
knownKeys[pair] = (shim.ossl || shim.subtle).importKey("jwk", jwk, {name: 'ECDSA', namedCurve: 'P-256'}, false, ["verify"]);
return knownKeys[pair];
};
var O = SEA.opt;
SEA.opt.fall_verify = async function(data, pair, cb, opt, f){
if(f === SEA.opt.fallback){ throw "Signature did not match" } f = f || 1;
var tmp = data||'';
data = SEA.opt.unpack(data) || data;
var json = S.parse(data), pub = pair.pub || pair, key = await SEA.opt.slow_leak(pub);
var hash = (f <= SEA.opt.fallback)? shim.Buffer.from(await shim.subtle.digest({name: 'SHA-256'}, new shim.TextEncoder().encode(S.parse(json.m)))) : await sha(json.m); // this line is old bad buggy code but necessary for old compatibility.
var buf; var sig; var check; try{
buf = shim.Buffer.from(json.s, opt.encode || 'base64') // NEW DEFAULT!
sig = new Uint8Array(buf)
check = await (shim.ossl || shim.subtle).verify({name: 'ECDSA', hash: {name: 'SHA-256'}}, key, sig, new Uint8Array(hash))
if(!check){ throw "Signature did not match." }
}catch(e){
buf = shim.Buffer.from(json.s, 'utf8') // AUTO BACKWARD OLD UTF8 DATA!
sig = new Uint8Array(buf)
check = await (shim.ossl || shim.subtle).verify({name: 'ECDSA', hash: {name: 'SHA-256'}}, key, sig, new Uint8Array(hash))
if(!check){ throw "Signature did not match." }
}
var r = check? S.parse(json.m) : u;
O.fall_soul = tmp['#']; O.fall_key = tmp['.']; O.fall_val = data; O.fall_state = tmp['>'];
if(cb){ try{ cb(r) }catch(e){console.log(e)} }
return r;
}
SEA.opt.fallback = 2;
})(USE, './verify');
;USE(function(module){
var shim = USE('./shim');
var S = USE('./settings');
var sha256hash = USE('./sha256');
const importGen = async (key, salt, opt) => {
//const combo = shim.Buffer.concat([shim.Buffer.from(key, 'utf8'), salt || shim.random(8)]).toString('utf8') // old
var opt = opt || {};
const combo = key + (salt || shim.random(8)).toString('utf8'); // new
const hash = shim.Buffer.from(await sha256hash(combo), 'binary')
const jwkKey = S.keyToJwk(hash)
return await shim.subtle.importKey('jwk', jwkKey, {name:'AES-GCM'}, false, ['encrypt', 'decrypt'])
}
module.exports = importGen;
})(USE, './aeskey');
;USE(function(module){
var SEA = USE('./root');
var shim = USE('./shim');
var S = USE('./settings');
var aeskey = USE('./aeskey');
var u;
SEA.encrypt = SEA.encrypt || (async (data, pair, cb, opt) => { try {
opt = opt || {};
var key = (pair||opt).epriv || pair;
if(u === data){ throw '`undefined` not allowed.' }
if(!key){
pair = await SEA.I(null, {what: data, how: 'encrypt', why: opt.why});
key = pair.epriv || pair;
}
var msg = (typeof data == 'string')? data : JSON.stringify(data);
var rand = {s: shim.random(9), iv: shim.random(15)}; // consider making this 9 and 15 or 18 or 12 to reduce == padding.
var ct = await aeskey(key, rand.s, opt).then((aes) => (/*shim.ossl ||*/ shim.subtle).encrypt({ // Keeping the AES key scope as private as possible...
name: opt.name || 'AES-GCM', iv: new Uint8Array(rand.iv)
}, aes, new shim.TextEncoder().encode(msg)));
var r = {
ct: shim.Buffer.from(ct, 'binary').toString(opt.encode || 'base64'),
iv: rand.iv.toString(opt.encode || 'base64'),
s: rand.s.toString(opt.encode || 'base64')
}
if(!opt.raw){ r = 'SEA'+JSON.stringify(r) }
if(cb){ try{ cb(r) }catch(e){console.log(e)} }
return r;
} catch(e) {
console.log(e);
SEA.err = e;
if(SEA.throw){ throw e }
if(cb){ cb() }
return;
}});
module.exports = SEA.encrypt;
})(USE, './encrypt');
;USE(function(module){
var SEA = USE('./root');
var shim = USE('./shim');
var S = USE('./settings');
var aeskey = USE('./aeskey');
SEA.decrypt = SEA.decrypt || (async (data, pair, cb, opt) => { try {
opt = opt || {};
var key = (pair||opt).epriv || pair;
if(!key){
pair = await SEA.I(null, {what: data, how: 'decrypt', why: opt.why});
key = pair.epriv || pair;
}
var json = S.parse(data);
var buf, bufiv, bufct; try{
buf = shim.Buffer.from(json.s, opt.encode || 'base64');
bufiv = shim.Buffer.from(json.iv, opt.encode || 'base64');
bufct = shim.Buffer.from(json.ct, opt.encode || 'base64');
var ct = await aeskey(key, buf, opt).then((aes) => (/*shim.ossl ||*/ shim.subtle).decrypt({ // Keeping aesKey scope as private as possible...
name: opt.name || 'AES-GCM', iv: new Uint8Array(bufiv), tagLength: 128
}, aes, new Uint8Array(bufct)));
}catch(e){
if('utf8' === opt.encode){ throw "Could not decrypt" }
if(SEA.opt.fallback){
opt.encode = 'utf8';
return await SEA.decrypt(data, pair, cb, opt);
}
}
var r = S.parse(new shim.TextDecoder('utf8').decode(ct));
if(cb){ try{ cb(r) }catch(e){console.log(e)} }
return r;
} catch(e) {
console.log(e);
SEA.err = e;
if(SEA.throw){ throw e }
if(cb){ cb() }
return;
}});
module.exports = SEA.decrypt;
})(USE, './decrypt');
;USE(function(module){
var SEA = USE('./root');
var shim = USE('./shim');
var S = USE('./settings');
// Derive shared secret from other's pub and my epub/epriv
SEA.secret = SEA.secret || (async (key, pair, cb, opt) => { try {
opt = opt || {};
if(!pair || !pair.epriv || !pair.epub){
pair = await SEA.I(null, {what: key, how: 'secret', why: opt.why});
}
var pub = key.epub || key;
var epub = pair.epub;
var epriv = pair.epriv;
var ecdhSubtle = shim.ossl || shim.subtle;
var pubKeyData = keysToEcdhJwk(pub);
var props = Object.assign({ public: await ecdhSubtle.importKey(...pubKeyData, true, []) },{name: 'ECDH', namedCurve: 'P-256'}); // Thanks to @sirpy !
var privKeyData = keysToEcdhJwk(epub, epriv);
var derived = await ecdhSubtle.importKey(...privKeyData, false, ['deriveBits']).then(async (privKey) => {
// privateKey scope doesn't leak out from here!
var derivedBits = await ecdhSubtle.deriveBits(props, privKey, 256);
var rawBits = new Uint8Array(derivedBits);
var derivedKey = await ecdhSubtle.importKey('raw', rawBits,{ name: 'AES-GCM', length: 256 }, true, [ 'encrypt', 'decrypt' ]);
return ecdhSubtle.exportKey('jwk', derivedKey).then(({ k }) => k);
})
var r = derived;
if(cb){ try{ cb(r) }catch(e){console.log(e)} }
return r;
} catch(e) {
console.log(e);
SEA.err = e;
if(SEA.throw){ throw e }
if(cb){ cb() }
return;
}});
// can this be replaced with settings.jwk?
var keysToEcdhJwk = (pub, d) => { // d === priv
//var [ x, y ] = Buffer.from(pub, 'base64').toString('utf8').split(':') // old
var [ x, y ] = pub.split('.') // new
var jwk = d ? { d: d } : {}
return [ // Use with spread returned value...
'jwk',
Object.assign(
jwk,
{ x: x, y: y, kty: 'EC', crv: 'P-256', ext: true }
), // ??? refactor
{name: 'ECDH', namedCurve: 'P-256'}
]
}
module.exports = SEA.secret;
})(USE, './secret');
;USE(function(module){
var shim = USE('./shim');
// Practical examples about usage found in tests.
var SEA = USE('./root');
SEA.work = USE('./work');
SEA.sign = USE('./sign');
SEA.verify = USE('./verify');
SEA.encrypt = USE('./encrypt');
SEA.decrypt = USE('./decrypt');
//SEA.opt.aeskey = USE('./aeskey'); // not official! // this causes problems in latest WebCrypto.
SEA.random = SEA.random || shim.random;
// This is Buffer used in SEA and usable from Gun/SEA application also.
// For documentation see https://nodejs.org/api/buffer.html
SEA.Buffer = SEA.Buffer || USE('./buffer');
// These SEA functions support now ony Promises or
// async/await (compatible) code, use those like Promises.
//
// Creates a wrapper library around Web Crypto API
// for various AES, ECDSA, PBKDF2 functions we called above.
// Calculate public key KeyID aka PGPv4 (result: 8 bytes as hex string)
SEA.keyid = SEA.keyid || (async (pub) => {
try {
// base64('base64(x):base64(y)') => Buffer(xy)
const pb = Buffer.concat(
pub.replace(/-/g, '+').replace(/_/g, '/').split('.')
.map((t) => Buffer.from(t, 'base64'))
)
// id is PGPv4 compliant raw key
const id = Buffer.concat([
Buffer.from([0x99, pb.length / 0x100, pb.length % 0x100]), pb
])
const sha1 = await sha1hash(id)
const hash = Buffer.from(sha1, 'binary')
return hash.toString('hex', hash.length - 8) // 16-bit ID as hex
} catch (e) {
console.log(e)
throw e
}
});
// all done!
// Obviously it is missing MANY necessary features. This is only an alpha release.
// Please experiment with it, audit what I've done so far, and complain about what needs to be added.
// SEA should be a full suite that is easy and seamless to use.
// Again, scroll naer the top, where I provide an EXAMPLE of how to create a user and sign in.
// Once logged in, the rest of the code you just read handled automatically signing/validating data.
// But all other behavior needs to be equally easy, like opinionated ways of
// Adding friends (trusted public keys), sending private messages, etc.
// Cheers! Tell me what you think.
var Gun = (SEA.window||{}).Gun || USE((typeof MODULE == "undefined"?'.':'')+'./gun', 1);
Gun.SEA = SEA;
SEA.GUN = SEA.Gun = Gun;
module.exports = SEA
})(USE, './sea');
;USE(function(module){
var Gun = USE('./sea').Gun;
Gun.chain.then = function(cb, opt){
var gun = this, p = (new Promise(function(res, rej){
gun.once(res, opt);
}));
return cb? p.then(cb) : p;
}
})(USE, './then');
;USE(function(module){
var SEA = USE('./sea');
var Gun = SEA.Gun;
var then = USE('./then');
function User(root){
this._ = {$: this};
}
User.prototype = (function(){ function F(){}; F.prototype = Gun.chain; return new F() }()) // Object.create polyfill
User.prototype.constructor = User;
// let's extend the gun chain with a `user` function.
// only one user can be logged in at a time, per gun instance.
Gun.chain.user = function(pub){
var gun = this, root = gun.back(-1), user;
if(pub){ return root.get('~'+pub) }
if(user = root.back('user')){ return user }
var root = (root._), at = root, uuid = at.opt.uuid || Gun.state.lex;
(at = (user = at.user = gun.chain(new User))._).opt = {};
at.opt.uuid = function(cb){
var id = uuid(), pub = root.user;
if(!pub || !(pub = pub.is) || !(pub = pub.pub)){ return id }
id = id + '~' + pub + '/';
if(cb && cb.call){ cb(null, id) }
return id;
}
return user;
}
Gun.User = User;
module.exports = User;
})(USE, './user');
;USE(function(module){
// TODO: This needs to be split into all separate functions.
// Not just everything thrown into 'create'.
var SEA = USE('./sea');
var User = USE('./user');
var authsettings = USE('./settings');
var Gun = SEA.Gun;
var noop = function(){};
// Well first we have to actually create a user. That is what this function does.
User.prototype.create = function(alias, pass, cb, opt){
var gun = this, cat = (gun._), root = gun.back(-1);
cb = cb || noop;
if(cat.ing){
cb({err: Gun.log("User is already being created or authenticated!"), wait: true});
return gun;
}
cat.ing = true;
opt = opt || {};
var act = {}, u;
act.a = function(pubs){
act.pubs = pubs;
if(pubs && !opt.already){
// If we can enforce that a user name is already taken, it might be nice to try, but this is not guaranteed.
var ack = {err: Gun.log('User already created!')};
cat.ing = false;
cb(ack);
gun.leave();
return;
}
act.salt = Gun.text.random(64); // pseudo-randomly create a salt, then use PBKDF2 function to extend the password with it.
SEA.work(pass, act.salt, act.b); // this will take some short amount of time to produce a proof, which slows brute force attacks.
}
act.b = function(proof){
act.proof = proof;
SEA.pair(act.c); // now we have generated a brand new ECDSA key pair for the user account.
}
act.c = function(pair){ var tmp;
act.pair = pair || {};
if(tmp = cat.root.user){
tmp._.sea = pair;
tmp.is = {pub: pair.pub, epub: pair.epub, alias: alias};
}
// the user's public key doesn't need to be signed. But everything else needs to be signed with it! // we have now automated it! clean up these extra steps now!
act.data = {pub: pair.pub};
act.d();
}
act.d = function(){
act.data.alias = alias;
act.e();
}
act.e = function(){
act.data.epub = act.pair.epub;
SEA.encrypt({priv: act.pair.priv, epriv: act.pair.epriv}, act.proof, act.f, {raw:1}); // to keep the private key safe, we AES encrypt it with the proof of work!
}
act.f = function(auth){
act.data.auth = JSON.stringify({ek: auth, s: act.salt});
act.g(act.data.auth);
}
act.g = function(auth){ var tmp;
act.data.auth = act.data.auth || auth;
root.get(tmp = '~'+act.pair.pub).put(act.data); // awesome, now we can actually save the user with their public key as their ID.
root.get('~@'+alias).put(Gun.obj.put({}, tmp, Gun.val.link.ify(tmp))); // next up, we want to associate the alias with the public key. So we add it to the alias list.
setTimeout(function(){ // we should be able to delete this now, right?
cat.ing = false;
cb({ok: 0, pub: act.pair.pub}); // callback that the user has been created. (Note: ok = 0 because we didn't wait for disk to ack)
if(noop === cb){ gun.auth(alias, pass) } // if no callback is passed, auto-login after signing up.
},10);
}
root.get('~@'+alias).once(act.a);
return gun;
}
// now that we have created a user, we want to authenticate them!
User.prototype.auth = function(){
const alias = typeof arguments[0] === 'string' ? arguments[0] : null
const pass = alias && typeof arguments[1] === 'string' ? arguments[1] : null
const pair = typeof arguments[0] === 'object' && (arguments[0].pub || arguments[0].epub) ? arguments[0] : typeof arguments[1] === 'object' && (arguments[1].pub || arguments[1].epub) ? arguments[1] : null
const cb = Array.prototype.slice.call(arguments).filter(arg => typeof arg === 'function')[0] || function(){} // cb now can stand anywhere, after alias/pass or pair
const opt = arguments && arguments.length > 1 && typeof arguments[arguments.length-1] === 'object' ? arguments[arguments.length-1] : {} // opt is always the last parameter which typeof === 'object' and stands after cb
var gun = this, cat = (gun._), root = gun.back(-1);
if(cat.ing){
cb({err: Gun.log("User is already being created or authenticated!"), wait: true});
return gun;
}
cat.ing = true;
var act = {}, u;
act.a = function(data){
if(!data){ return act.b() }
if(!data.pub){
var tmp = [];
Gun.node.is(data, function(v){ tmp.push(v) })
return act.b(tmp);
}
if(act.name){ return act.f(data) }
act.c((act.data = data).auth);
}
act.b = function(list){
var get = (act.list = (act.list||[]).concat(list||[])).shift();
if(u === get){
if(act.name){ return act.err('Your user account is not published for dApps to access, please consider syncing it online, or allowing local access by adding your device as a peer.') }
return act.err('Wrong user or password.')
}
root.get(get).once(act.a);
}
act.c = function(auth){
if(u === auth){ return act.b() }
if(Gun.text.is(auth)){ return act.c(Gun.obj.ify(auth)) } // in case of legacy
SEA.work(pass, (act.auth = auth).s, act.d, act.enc); // the proof of work is evidence that we've spent some time/effort trying to log in, this slows brute force.
}
act.d = function(proof){
SEA.decrypt(act.auth.ek, proof, act.e, act.enc);
}
act.e = function(half){
if(u === half){
if(!act.enc){ // try old format
act.enc = {encode: 'utf8'};
return act.c(act.auth);
} act.enc = null; // end backwards
return act.b();
}
act.half = half;
act.f(act.data);
}
act.f = function(data){
if(!data || !data.pub){ return act.b() }
var tmp = act.half || {};
act.g({pub: data.pub, epub: data.epub, priv: tmp.priv, epriv: tmp.epriv});
}
act.g = function(pair){
act.pair = pair;
var user = (root._).user, at = (user._);
var tmp = at.tag;
var upt = at.opt;
at = user._ = root.get('~'+pair.pub)._;
at.opt = upt;
// add our credentials in-memory only to our root user instance
user.is = {pub: pair.pub, epub: pair.epub, alias: alias};
at.sea = act.pair;
cat.ing = false;
try{if(pass && !Gun.obj.has(Gun.obj.ify(cat.root.graph['~'+pair.pub].auth), ':')){ opt.shuffle = opt.change = pass; } }catch(e){} // migrate UTF8 & Shuffle!
opt.change? act.z() : cb(at);
if(SEA.window && ((gun.back('user')._).opt||opt).remember){
// TODO: this needs to be modular.
try{var sS = {};
sS = window.sessionStorage;
sS.recall = true;
sS.pair = JSON.stringify(pair); // auth using pair is more reliable than alias/pass
}catch(e){}
}
try{
(root._).on('auth', at) // TODO: Deprecate this, emit on user instead! Update docs when you do.
//at.on('auth', at) // Arrgh, this doesn't work without event "merge" code, but "merge" code causes stack overflow and crashes after logging in & trying to write data.
}catch(e){
Gun.log("Your 'auth' callback crashed with:", e);
}
}
act.z = function(){
// password update so encrypt private key using new pwd + salt
act.salt = Gun.text.random(64); // pseudo-random
SEA.work(opt.change, act.salt, act.y);
}
act.y = function(proof){
SEA.encrypt({priv: act.pair.priv, epriv: act.pair.epriv}, proof, act.x, {raw:1});
}
act.x = function(auth){
act.w(JSON.stringify({ek: auth, s: act.salt}));
}
act.w = function(auth){
if(opt.shuffle){ // delete in future!
console.log('migrate core account from UTF8 & shuffle');
var tmp = Gun.obj.to(act.data);
Gun.obj.del(tmp, '_');
tmp.auth = auth;
root.get('~'+act.pair.pub).put(tmp);
} // end delete
root.get('~'+act.pair.pub).get('auth').put(auth, cb);
}
act.err = function(e){
var ack = {err: Gun.log(e || 'User cannot be found!')};
cat.ing = false;
cb(ack);
}
act.plugin = function(name){
if(!(act.name = name)){ return act.err() }
var tmp = [name];
if('~' !== name[0]){
tmp[1] = '~'+name;
tmp[2] = '~@'+name;
}
act.b(tmp);
}
if(pair){
act.g(pair);
} else
if(alias){
root.get('~@'+alias).once(act.a);
} else
if(!alias && !pass){
SEA.name(act.plugin);
}
return gun;
}
User.prototype.pair = function(){
console.log("user.pair() IS DEPRECATED AND WILL BE DELETED!!!");
var user = this;
if(!user.is){ return false }
return user._.sea;
}
User.prototype.leave = function(opt, cb){
var gun = this, user = (gun.back(-1)._).user;
if(user){
delete user.is;
delete user._.is;
delete user._.sea;
}
if(SEA.window){
try{var sS = {};
sS = window.sessionStorage;
delete sS.recall;
delete sS.pair;
}catch(e){};
}
return gun;
}
// If authenticated user wants to delete his/her account, let's support it!
User.prototype.delete = async function(alias, pass, cb){
console.log("user.delete() IS DEPRECATED AND WILL BE MOVED TO A MODULE!!!");
var gun = this, root = gun.back(-1), user = gun.back('user');
try {
user.auth(alias, pass, function(ack){
var pub = (user.is||{}).pub;
// Delete user data
user.map().once(function(){ this.put(null) });
// Wipe user data from memory
user.leave();
(cb || noop)({ok: 0});
});
} catch (e) {
Gun.log('User.delete failed! Error:', e);
}
return gun;
}
User.prototype.recall = function(opt, cb){