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Update libsignal-protocol v0.9.0

Browse Source 
* Exposes crypto APIs.
* Move worker methods to libsigna.worker.
* Move ProvisioningCipher to libtextsecure.
pull/749/head
lilia 9 years ago
parent cd2218ada7
commit ffa702c934
7 changed files with 293 additions and 238 deletions
Show Stats Download Patch File Download Diff File

1
Gruntfile.js
Unescape Escape View File

@ -59,6 +59,7 @@ module.exports = function(grunt) {
'libtextsecure/sendmessage.js',
'libtextsecure/sync_request.js',
'libtextsecure/contacts_parser.js',
'libtextsecure/ProvisioningCipher.js',
],
dest: 'js/libtextsecure.js',
},

2
js/background.js
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@ -33,7 +33,7 @@
});
// start a background worker for ecc
textsecure.protocol_wrapper.startWorker('/js/libsignal-protocol-worker.js');
textsecure.startWorker('/js/libsignal-protocol-worker.js');
extension.onLaunched(function() {
console.log('extension launched');

264
js/libtextsecure.js
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@ -25392,6 +25392,11 @@ Internal.curve25519 = function() {
};
}();
;(function() {
'use strict';
window.libsignal = window.libsignal || {};
var Internal = Internal || {};
// I am the...workee?
@ -25401,6 +25406,7 @@ Internal.startWorker = function(url) {
Internal.stopWorker(); // there can be only one
Internal.curve25519 = new Curve25519Worker(url);
};
Internal.stopWorker = function() {
if (Internal.curve25519 instanceof Curve25519Worker) {
var worker = Internal.curve25519.worker;
@ -25409,6 +25415,11 @@ Internal.stopWorker = function() {
}
};
libsignal.worker = {
startWorker: Internal.startWorker,
stopWorker: Internal.stopWorker,
};
function Curve25519Worker(url) {
this.jobs = {};
this.jobId = 0;
@ -25447,6 +25458,8 @@ Curve25519Worker.prototype = {
}
};
})();
/*
Copyright 2013 Daniel Wirtz <dcode@dcode.io>
Copyright 2009 The Closure Library Authors. All Rights Reserved.
@ -34030,7 +34043,7 @@ var Internal = Internal || {};
}
var validatePubKeyFormat = function(pubKey) {
function validatePubKeyFormat(pubKey) {
if (pubKey === undefined || ((pubKey.byteLength != 33 || new Uint8Array(pubKey)[0] != 5) && pubKey.byteLength != 32))
throw new Error("Invalid public key");
if (pubKey.byteLength == 33) {
@ -34039,7 +34052,7 @@ var Internal = Internal || {};
console.error("WARNING: Expected pubkey of length 33, please report the ST and client that generated the pubkey");
return pubKey;
}
};
}
Internal.crypto = {
getRandomBytes: function(size) {
@ -34145,7 +34158,66 @@ var Internal = Internal || {};
throw new Error("Got salt of incorrect length");
return Internal.crypto.HKDF(input, salt, util.toArrayBuffer(info));
}
};
Internal.verifyMAC = function(data, key, mac, length) {
return Internal.crypto.sign(key, data).then(function(calculated_mac) {
if (mac.byteLength != length || calculated_mac.byteLength < length) {
throw new Error("Bad MAC length");
}
var a = new Uint8Array(calculated_mac);
var b = new Uint8Array(mac);
var result = 0;
for (var i=0; i < mac.byteLength; ++i) {
result = result | (a[i] ^ b[i]);
}
if (result !== 0) {
throw new Error("Bad MAC");
}
});
};
libsignal.Curve = {
generateKeyPair: function() {
return Internal.crypto.createKeyPair();
},
createKeyPair: function(privKey) {
return Internal.crypto.createKeyPair(privKey);
},
calculateAgreement: function(pubKey, privKey) {
return Internal.crypto.ECDHE(pubKey, privKey);
},
verifySignature: function(pubKey, msg, sig) {
return Internal.crypto.Ed25519Verify(pubKey, msg, sig);
},
calculateSignature: function(privKey, message) {
return Internal.crypto.Ed25519Sign(privKey, message);
},
};
libsignal.HKDF = {
deriveSecrets: function(input, salt, info) {
return Internal.HKDF(input, salt, info);
}
};
libsignal.crypto = {
encrypt: function(key, data, iv) {
return Internal.crypto.encrypt(key, data, iv);
},
decrypt: function(key, data, iv) {
return Internal.crypto.decrypt(key, data, iv);
},
calculateMAC: function(key, data) {
return Internal.crypto.sign(key, data);
},
verifyMAC: function(data, key, mac, length) {
return Internal.verifyMAC(data, key, mac, length);
},
getRandomBytes: function(size) {
return Internal.crypto.getRandomBytes(size);
}
};
})();
@ -34256,105 +34328,6 @@ var util = (function() {
};
})();
/* vim: ts=4:sw=4
*
* 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/>.
*/
;(function() {
'use strict';
window.libsignal = window.libsignal || {};
libsignal.protocol = function() {
var self = {};
var verifyMAC = function(data, key, mac, length) {
return Internal.crypto.sign(key, data).then(function(calculated_mac) {
if (mac.byteLength != length || calculated_mac.byteLength < length) {
throw new Error("Bad MAC length");
}
var a = new Uint8Array(calculated_mac);
var b = new Uint8Array(mac);
var result = 0;
for (var i=0; i < mac.byteLength; ++i) {
result = result | (a[i] ^ b[i]);
}
if (result !== 0) {
throw new Error("Bad MAC");
}
});
};
/******************************
*** Ratchet implementation ***
******************************/
self.createIdentityKeyRecvSocket = function() {
var socketInfo = {};
var keyPair;
socketInfo.decryptAndHandleDeviceInit = function(deviceInit) {
var masterEphemeral = util.toArrayBuffer(deviceInit.publicKey);
var message = util.toArrayBuffer(deviceInit.body);
return Internal.crypto.ECDHE(masterEphemeral, keyPair.privKey).then(function(ecRes) {
return Internal.HKDF(ecRes, new ArrayBuffer(32), "TextSecure Provisioning Message").then(function(keys) {
if (new Uint8Array(message)[0] != 1)
throw new Error("Bad version number on ProvisioningMessage");
var iv = message.slice(1, 16 + 1);
var mac = message.slice(message.byteLength - 32, message.byteLength);
var ivAndCiphertext = message.slice(0, message.byteLength - 32);
var ciphertext = message.slice(16 + 1, message.byteLength - 32);
return verifyMAC(ivAndCiphertext, keys[1], mac, 32).then(function() {
return Internal.crypto.decrypt(keys[0], ciphertext, iv).then(function(plaintext) {
var provisionMessage = Internal.protobuf.ProvisionMessage.decode(plaintext);
return Internal.crypto.createKeyPair(
provisionMessage.identityKeyPrivate.toArrayBuffer()
).then(function(identityKeyPair) {
return {
identityKeyPair : identityKeyPair,
number : provisionMessage.number,
provisioningCode : provisionMessage.provisioningCode
};
});
});
});
});
});
}
return Internal.crypto.createKeyPair().then(function(newKeyPair) {
keyPair = newKeyPair;
socketInfo.pubKey = keyPair.pubKey;
return socketInfo;
});
}
self.startWorker = function(url) {
Internal.startWorker(url);
};
self.stopWorker = function() {
Internal.stopWorker();
};
return self;
};
})();
function isNonNegativeInteger(n) {
return (typeof n === 'number' && (n % 1) === 0 && n >= 0);
}
@ -35416,6 +35389,7 @@ Internal.SessionLock.queueJobForNumber = function queueJobForNumber(number, runJ
})();
})();
/*
* vim: ts=4:sw=4:expandtab
*/
@ -35425,20 +35399,10 @@ Internal.SessionLock.queueJobForNumber = function queueJobForNumber(number, runJ
window.textsecure.storage = window.textsecure.storage || {};
textsecure.storage.protocol = new SignalProtocolStore();
var protocolInstance = libsignal.protocol(textsecure.storage.protocol);
window.textsecure = window.textsecure || {};
window.textsecure.protocol_wrapper = {
startWorker: function(url) {
protocolInstance.startWorker(url);
},
stopWorker: function() {
protocolInstance.stopWorker();
},
createIdentityKeyRecvSocket: function() {
return protocolInstance.createIdentityKeyRecvSocket();
}
};
textsecure.ProvisioningCipher = libsignal.ProvisioningCipher;
textsecure.startWorker = libsignal.worker.startWorker;
textsecure.stopWorker = libsignal.worker.stopWorker;
})();
/*
@ -36771,7 +36735,8 @@ var TextSecureServer = (function() {
var generateKeys = this.generateKeys.bind(this, 100, progressCallback);
var registerKeys = this.server.registerKeys.bind(this.server);
var getSocket = this.server.getProvisioningSocket.bind(this.server);
return textsecure.protocol_wrapper.createIdentityKeyRecvSocket().then(function(cryptoInfo) {
var provisioningCipher = new libsignal.ProvisioningCipher();
return provisioningCipher.getPublicKey().then(function(pubKey) {
return new Promise(function(resolve, reject) {
var socket = getSocket();
socket.onclose = function(e) {
@ -36785,14 +36750,14 @@ var TextSecureServer = (function() {
var proto = textsecure.protobuf.ProvisioningUuid.decode(request.body);
setProvisioningUrl([
'tsdevice:/?uuid=', proto.uuid, '&pub_key=',
encodeURIComponent(btoa(getString(cryptoInfo.pubKey)))
encodeURIComponent(btoa(getString(pubKey)))
].join(''));
request.respond(200, 'OK');
} else if (request.path === "/v1/message" && request.verb === "PUT") {
var envelope = textsecure.protobuf.ProvisionEnvelope.decode(request.body, 'binary');
request.respond(200, 'OK');
wsr.close();
resolve(cryptoInfo.decryptAndHandleDeviceInit(envelope).then(function(provisionMessage) {
resolve(provisioningCipher.decrypt(envelope).then(function(provisionMessage) {
return confirmNumber(provisionMessage.number).then(function(deviceName) {
if (typeof deviceName !== 'string' || deviceName.length === 0) {
throw new Error('Invalid device name');
@ -38162,4 +38127,67 @@ var ContactBuffer = function(arrayBuffer) {
};
ContactBuffer.prototype = Object.create(ProtoParser.prototype);
ContactBuffer.prototype.constructor = ContactBuffer;
(function() {
'use strict';
function ProvisioningCipher() {}
ProvisioningCipher.prototype = {
decrypt: function(provisionEnvelope) {
var masterEphemeral = provisionEnvelope.publicKey.toArrayBuffer();
var message = provisionEnvelope.body.toArrayBuffer();
if (new Uint8Array(message)[0] != 1) {
throw new Error("Bad version number on ProvisioningMessage");
}
var iv = message.slice(1, 16 + 1);
var mac = message.slice(message.byteLength - 32, message.byteLength);
var ivAndCiphertext = message.slice(0, message.byteLength - 32);
var ciphertext = message.slice(16 + 1, message.byteLength - 32);
return libsignal.Curve.calculateAgreement(
masterEphemeral, this.keyPair.privKey
).then(function(ecRes) {
return libsignal.HKDF.deriveSecrets(
ecRes, new ArrayBuffer(32), "TextSecure Provisioning Message"
);
}).then(function(keys) {
return libsignal.crypto.verifyMAC(ivAndCiphertext, keys[1], mac, 32).then(function() {
return libsignal.crypto.decrypt(keys[0], ciphertext, iv);
});
}).then(function(plaintext) {
var provisionMessage = textsecure.protobuf.ProvisionMessage.decode(plaintext);
var privKey = provisionMessage.identityKeyPrivate.toArrayBuffer();
return libsignal.Curve.createKeyPair(privKey).then(function(keyPair) {
return {
identityKeyPair : keyPair,
number : provisionMessage.number,
provisioningCode : provisionMessage.provisioningCode
};
});
});
},
getPublicKey: function() {
return Promise.resolve().then(function() {
if (!this.keyPair) {
return libsignal.Curve.generateKeyPair().then(function(keyPair) {
this.keyPair = keyPair;
}.bind(this));
}
}.bind(this)).then(function() {
return this.keyPair.pubKey;
}.bind(this));
}
};
libsignal.ProvisioningCipher = function() {
var cipher = new ProvisioningCipher();
this.decrypt = cipher.decrypt.bind(cipher);
this.getPublicKey = cipher.getPublicKey.bind(cipher);
};
})();
})();

62
libtextsecure/ProvisioningCipher.js
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@ -0,0 +1,62 @@
(function() {
'use strict';
function ProvisioningCipher() {}
ProvisioningCipher.prototype = {
decrypt: function(provisionEnvelope) {
var masterEphemeral = provisionEnvelope.publicKey.toArrayBuffer();
var message = provisionEnvelope.body.toArrayBuffer();
if (new Uint8Array(message)[0] != 1) {
throw new Error("Bad version number on ProvisioningMessage");
}
var iv = message.slice(1, 16 + 1);
var mac = message.slice(message.byteLength - 32, message.byteLength);
var ivAndCiphertext = message.slice(0, message.byteLength - 32);
var ciphertext = message.slice(16 + 1, message.byteLength - 32);
return libsignal.Curve.calculateAgreement(
masterEphemeral, this.keyPair.privKey
).then(function(ecRes) {
return libsignal.HKDF.deriveSecrets(
ecRes, new ArrayBuffer(32), "TextSecure Provisioning Message"
);
}).then(function(keys) {
return libsignal.crypto.verifyMAC(ivAndCiphertext, keys[1], mac, 32).then(function() {
return libsignal.crypto.decrypt(keys[0], ciphertext, iv);
});
}).then(function(plaintext) {
var provisionMessage = textsecure.protobuf.ProvisionMessage.decode(plaintext);
var privKey = provisionMessage.identityKeyPrivate.toArrayBuffer();
return libsignal.Curve.createKeyPair(privKey).then(function(keyPair) {
return {
identityKeyPair : keyPair,
number : provisionMessage.number,
provisioningCode : provisionMessage.provisioningCode
};
});
});
},
getPublicKey: function() {
return Promise.resolve().then(function() {
if (!this.keyPair) {
return libsignal.Curve.generateKeyPair().then(function(keyPair) {
this.keyPair = keyPair;
}.bind(this));
}
}.bind(this)).then(function() {
return this.keyPair.pubKey;
}.bind(this));
}
};
libsignal.ProvisioningCipher = function() {
var cipher = new ProvisioningCipher();
this.decrypt = cipher.decrypt.bind(cipher);
this.getPublicKey = cipher.getPublicKey.bind(cipher);
};
})();

7
libtextsecure/account_manager.js
Unescape Escape View File

@ -35,7 +35,8 @@
var generateKeys = this.generateKeys.bind(this, 100, progressCallback);
var registerKeys = this.server.registerKeys.bind(this.server);
var getSocket = this.server.getProvisioningSocket.bind(this.server);
return textsecure.protocol_wrapper.createIdentityKeyRecvSocket().then(function(cryptoInfo) {
var provisioningCipher = new libsignal.ProvisioningCipher();
return provisioningCipher.getPublicKey().then(function(pubKey) {
return new Promise(function(resolve, reject) {
var socket = getSocket();
socket.onclose = function(e) {
@ -49,14 +50,14 @@
var proto = textsecure.protobuf.ProvisioningUuid.decode(request.body);
setProvisioningUrl([
'tsdevice:/?uuid=', proto.uuid, '&pub_key=',
encodeURIComponent(btoa(getString(cryptoInfo.pubKey)))
encodeURIComponent(btoa(getString(pubKey)))
].join(''));
request.respond(200, 'OK');
} else if (request.path === "/v1/message" && request.verb === "PUT") {
var envelope = textsecure.protobuf.ProvisionEnvelope.decode(request.body, 'binary');
request.respond(200, 'OK');
wsr.close();
resolve(cryptoInfo.decryptAndHandleDeviceInit(envelope).then(function(provisionMessage) {
resolve(provisioningCipher.decrypt(envelope).then(function(provisionMessage) {
return confirmNumber(provisionMessage.number).then(function(deviceName) {
if (typeof deviceName !== 'string' || deviceName.length === 0) {
throw new Error('Invalid device name');

179
libtextsecure/libsignal-protocol.js
Unescape Escape View File

@ -25278,6 +25278,11 @@ Internal.curve25519 = function() {
};
}();
;(function() {
'use strict';
window.libsignal = window.libsignal || {};
var Internal = Internal || {};
// I am the...workee?
@ -25287,6 +25292,7 @@ Internal.startWorker = function(url) {
Internal.stopWorker(); // there can be only one
Internal.curve25519 = new Curve25519Worker(url);
};
Internal.stopWorker = function() {
if (Internal.curve25519 instanceof Curve25519Worker) {
var worker = Internal.curve25519.worker;
@ -25295,6 +25301,11 @@ Internal.stopWorker = function() {
}
};
libsignal.worker = {
startWorker: Internal.startWorker,
stopWorker: Internal.stopWorker,
};
function Curve25519Worker(url) {
this.jobs = {};
this.jobId = 0;
@ -25333,6 +25344,8 @@ Curve25519Worker.prototype = {
}
};
})();
/*
Copyright 2013 Daniel Wirtz <dcode@dcode.io>
Copyright 2009 The Closure Library Authors. All Rights Reserved.
@ -33916,7 +33929,7 @@ var Internal = Internal || {};
}
var validatePubKeyFormat = function(pubKey) {
function validatePubKeyFormat(pubKey) {
if (pubKey === undefined || ((pubKey.byteLength != 33 || new Uint8Array(pubKey)[0] != 5) && pubKey.byteLength != 32))
throw new Error("Invalid public key");
if (pubKey.byteLength == 33) {
@ -33925,7 +33938,7 @@ var Internal = Internal || {};
console.error("WARNING: Expected pubkey of length 33, please report the ST and client that generated the pubkey");
return pubKey;
}
};
}
Internal.crypto = {
getRandomBytes: function(size) {
@ -34031,7 +34044,66 @@ var Internal = Internal || {};
throw new Error("Got salt of incorrect length");
return Internal.crypto.HKDF(input, salt, util.toArrayBuffer(info));
}
};
Internal.verifyMAC = function(data, key, mac, length) {
return Internal.crypto.sign(key, data).then(function(calculated_mac) {
if (mac.byteLength != length || calculated_mac.byteLength < length) {
throw new Error("Bad MAC length");
}
var a = new Uint8Array(calculated_mac);
var b = new Uint8Array(mac);
var result = 0;
for (var i=0; i < mac.byteLength; ++i) {
result = result | (a[i] ^ b[i]);
}
if (result !== 0) {
throw new Error("Bad MAC");
}
});
};
libsignal.Curve = {
generateKeyPair: function() {
return Internal.crypto.createKeyPair();
},
createKeyPair: function(privKey) {
return Internal.crypto.createKeyPair(privKey);
},
calculateAgreement: function(pubKey, privKey) {
return Internal.crypto.ECDHE(pubKey, privKey);
},
verifySignature: function(pubKey, msg, sig) {
return Internal.crypto.Ed25519Verify(pubKey, msg, sig);
},
calculateSignature: function(privKey, message) {
return Internal.crypto.Ed25519Sign(privKey, message);
},
};
libsignal.HKDF = {
deriveSecrets: function(input, salt, info) {
return Internal.HKDF(input, salt, info);
}
};
libsignal.crypto = {
encrypt: function(key, data, iv) {
return Internal.crypto.encrypt(key, data, iv);
},
decrypt: function(key, data, iv) {
return Internal.crypto.decrypt(key, data, iv);
},
calculateMAC: function(key, data) {
return Internal.crypto.sign(key, data);
},
verifyMAC: function(data, key, mac, length) {
return Internal.verifyMAC(data, key, mac, length);
},
getRandomBytes: function(size) {
return Internal.crypto.getRandomBytes(size);
}
};
})();
@ -34142,105 +34214,6 @@ var util = (function() {
};
})();
/* vim: ts=4:sw=4
*
* 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/>.
*/
;(function() {
'use strict';
window.libsignal = window.libsignal || {};
libsignal.protocol = function() {
var self = {};
var verifyMAC = function(data, key, mac, length) {
return Internal.crypto.sign(key, data).then(function(calculated_mac) {
if (mac.byteLength != length || calculated_mac.byteLength < length) {
throw new Error("Bad MAC length");
}
var a = new Uint8Array(calculated_mac);
var b = new Uint8Array(mac);
var result = 0;
for (var i=0; i < mac.byteLength; ++i) {
result = result | (a[i] ^ b[i]);
}
if (result !== 0) {
throw new Error("Bad MAC");
}
});
};
/******************************
*** Ratchet implementation ***
******************************/
self.createIdentityKeyRecvSocket = function() {
var socketInfo = {};
var keyPair;
socketInfo.decryptAndHandleDeviceInit = function(deviceInit) {
var masterEphemeral = util.toArrayBuffer(deviceInit.publicKey);
var message = util.toArrayBuffer(deviceInit.body);
return Internal.crypto.ECDHE(masterEphemeral, keyPair.privKey).then(function(ecRes) {
return Internal.HKDF(ecRes, new ArrayBuffer(32), "TextSecure Provisioning Message").then(function(keys) {
if (new Uint8Array(message)[0] != 1)
throw new Error("Bad version number on ProvisioningMessage");
var iv = message.slice(1, 16 + 1);
var mac = message.slice(message.byteLength - 32, message.byteLength);
var ivAndCiphertext = message.slice(0, message.byteLength - 32);
var ciphertext = message.slice(16 + 1, message.byteLength - 32);
return verifyMAC(ivAndCiphertext, keys[1], mac, 32).then(function() {
return Internal.crypto.decrypt(keys[0], ciphertext, iv).then(function(plaintext) {
var provisionMessage = Internal.protobuf.ProvisionMessage.decode(plaintext);
return Internal.crypto.createKeyPair(
provisionMessage.identityKeyPrivate.toArrayBuffer()
).then(function(identityKeyPair) {
return {
identityKeyPair : identityKeyPair,
number : provisionMessage.number,
provisioningCode : provisionMessage.provisioningCode
};
});
});
});
});
});
}
return Internal.crypto.createKeyPair().then(function(newKeyPair) {
keyPair = newKeyPair;
socketInfo.pubKey = keyPair.pubKey;
return socketInfo;
});
}
self.startWorker = function(url) {
Internal.startWorker(url);
};
self.stopWorker = function() {
Internal.stopWorker();
};
return self;
};
})();
function isNonNegativeInteger(n) {
return (typeof n === 'number' && (n % 1) === 0 && n >= 0);
}
@ -35301,4 +35274,4 @@ Internal.SessionLock.queueJobForNumber = function queueJobForNumber(number, runJ
})();
})();
})();

16
libtextsecure/protocol_wrapper.js
Unescape Escape View File

@ -7,18 +7,8 @@
window.textsecure.storage = window.textsecure.storage || {};
textsecure.storage.protocol = new SignalProtocolStore();
var protocolInstance = libsignal.protocol(textsecure.storage.protocol);
window.textsecure = window.textsecure || {};
window.textsecure.protocol_wrapper = {
startWorker: function(url) {
protocolInstance.startWorker(url);
},
stopWorker: function() {
protocolInstance.stopWorker();
},
createIdentityKeyRecvSocket: function() {
return protocolInstance.createIdentityKeyRecvSocket();
}
};
textsecure.ProvisioningCipher = libsignal.ProvisioningCipher;
textsecure.startWorker = libsignal.worker.startWorker;
textsecure.stopWorker = libsignal.worker.stopWorker;
})();

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