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Dedupe methods

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Define textsecure.crypto in terms of libsignal.crypto.

// FREEBIE
This commit is contained in:
lilia 2016-05-07 17:49:45 -07:00
parent 58452066aa
commit f8e176fd40
9 changed files with 35 additions and 107 deletions
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56
js/libtextsecure.js
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@ -36591,44 +36591,10 @@ Internal.SessionLock.queueJobForNumber = function queueJobForNumber(number, runJ
;(function(){
'use strict';
// Various wrappers around low-level crypto operation for specific functions
var encrypt = function(key, data, iv) {
return window.crypto.subtle.importKey('raw', key, {name: 'AES-CBC'}, false, ['encrypt']).then(function(key) {
return window.crypto.subtle.encrypt({name: 'AES-CBC', iv: new Uint8Array(iv)}, key, data);
});
};
var decrypt = function(key, data, iv) {
return window.crypto.subtle.importKey('raw', key, {name: 'AES-CBC'}, false, ['decrypt']).then(function(key) {
return window.crypto.subtle.decrypt({name: 'AES-CBC', iv: new Uint8Array(iv)}, key, data);
});
};
var calculateMAC = function(key, data) {
return window.crypto.subtle.importKey('raw', key, {name: 'HMAC', hash: {name: 'SHA-256'}}, false, ['sign']).then(function(key) {
return window.crypto.subtle.sign( {name: 'HMAC', hash: 'SHA-256'}, key, data);
});
};
var verifyMAC = function(data, key, mac, length) {
return calculateMAC(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");
}
});
};
var encrypt = libsignal.crypto.encrypt;
var decrypt = libsignal.crypto.decrypt;
var calculateMAC = libsignal.crypto.calculateMAC;
var verifyMAC = libsignal.crypto.verifyMAC;
window.textsecure = window.textsecure || {};
window.textsecure.crypto = {
@ -36705,9 +36671,7 @@ Internal.SessionLock.queueJobForNumber = function queueJobForNumber(number, runJ
},
getRandomBytes: function(size) {
var array = new Uint8Array(size);
window.crypto.getRandomValues(array);
return array.buffer;
return libsignal.crypto.getRandomBytes(size);
}
};
})();
@ -36819,7 +36783,7 @@ Internal.SessionLock.queueJobForNumber = function queueJobForNumber(number, runJ
// create a random group id that we haven't seen before.
function generateNewGroupId() {
var groupId = getString(textsecure.crypto.getRandomBytes(16));
var groupId = getString(libsignal.crypto.getRandomBytes(16));
return textsecure.storage.protocol.getGroup(groupId).then(function(group) {
if (group === undefined) {
return groupId;
@ -37910,8 +37874,8 @@ var TextSecureServer = (function() {
}.bind(this));
},
createAccount: function(number, verificationCode, identityKeyPair, deviceName) {
var signalingKey = textsecure.crypto.getRandomBytes(32 + 20);
var password = btoa(getString(textsecure.crypto.getRandomBytes(16)));
var signalingKey = libsignal.crypto.getRandomBytes(32 + 20);
var password = btoa(getString(libsignal.crypto.getRandomBytes(16)));
password = password.substring(0, password.length - 2);
var registrationId = libsignal.KeyHelper.generateRegistrationId();
@ -38778,9 +38742,9 @@ MessageSender.prototype = {
return Promise.resolve(undefined);
}
var proto = new textsecure.protobuf.AttachmentPointer();
proto.key = textsecure.crypto.getRandomBytes(64);
proto.key = libsignal.crypto.getRandomBytes(64);
var iv = textsecure.crypto.getRandomBytes(16);
var iv = libsignal.crypto.getRandomBytes(16);
return textsecure.crypto.encryptAttachment(attachment.data, proto.key, iv).then(function(encryptedBin) {
return this.server.putAttachment(encryptedBin).then(function(id) {
proto.id = id;