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https://github.com/moparisthebest/mail
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integrated refactored item batch encryption
This commit is contained in:
Tankred Hase
parent
b1b91850a7
commit
03a60c2546
@ -7,31 +7,55 @@
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var CryptoBatch = function(aes, rsa, util, _) {
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/**
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* Encrypt a list of items using AES
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* @param list [Array] The list of items to encrypt
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* Encrypt and sign a an item using AES and RSA
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* @param i [Object] The item to encrypt
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* @param receiverPubkey [String] The public key used to encrypt
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* @param senderKeyId [String] The sender's private key ID used to sign
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*/
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this.encryptList = function(list) {
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list.forEach(function(i) {
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// stringify to JSON before encryption
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i.ciphertext = aes.encrypt(JSON.stringify(i.plaintext), i.key, i.iv);
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delete i.plaintext;
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});
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this.encryptItemForUser = function(i, receiverPubkey, senderKeyId) {
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// set rsa public key used to encrypt
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rsa.init(receiverPubkey);
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return list;
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// stringify to JSON before symmetric encryption
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i.ciphertext = aes.encrypt(JSON.stringify(i.plaintext), i.key, i.iv);
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// encrypt symmetric item key for user
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i.encryptedKey = rsa.encrypt(i.key);
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// set sender's keypair id for later verification
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i.senderPk = senderKeyId;
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// sign the bundle
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i.signature = rsa.sign([i.iv, util.str2Base64(i.id), util.str2Base64(i.senderPk), i.encryptedKey, i.ciphertext]);
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// delete plaintext values
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delete i.plaintext;
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delete i.key;
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delete i.receiverPk;
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};
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/**
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* Decrypt a list of items using AES
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* @param list [Array] The list of items to decrypt
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* Decrypt and verify an item using AES and RSA
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* @param i [Object] The item to decrypt
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* @param senderPubkey [String] A public key used to verify
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*/
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this.decryptList = function(list) {
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list.forEach(function(i) {
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// decrypt JSON and parse to object literal
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i.plaintext = JSON.parse(aes.decrypt(i.ciphertext, i.key, i.iv));
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delete i.ciphertext;
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});
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this.decryptItemForUser = function(i, senderPubkey) {
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// set rsa public key used to verify
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rsa.init(senderPubkey);
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return list;
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// verify signature
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if (!rsa.verify([i.iv, util.str2Base64(i.id), util.str2Base64(i.senderPk), i.encryptedKey, i.ciphertext], i.signature)) {
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throw new Error('Verifying RSA signature failed!');
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}
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// decrypt symmetric item key for user
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i.key = rsa.decrypt(i.encryptedKey);
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// symmetrically decrypt JSON and parse to object literal
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i.plaintext = JSON.parse(aes.decrypt(i.ciphertext, i.key, i.iv));
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// delete ciphertext values
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delete i.signature;
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delete i.encryptedKey;
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delete i.senderPk;
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delete i.ciphertext;
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};
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/**
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@ -41,31 +65,24 @@
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* @param senderPrivkey [Array] The sender's private key used to sign
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*/
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this.encryptListForUser = function(list, receiverPubkeys, senderPrivkey) {
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// encrypt list with aes
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var encryptedList = this.encryptList(list);
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var receiverPk,
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self = this;
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// set sender private key
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rsa.init(null, senderPrivkey.privateKey);
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// encrypt keys for user
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encryptedList.forEach(function(i) {
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// fetch correct public key
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var pk = _.findWhere(receiverPubkeys, {
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list.forEach(function(i) {
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// fetch correct public key for encryption
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receiverPk = null;
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receiverPk = _.findWhere(receiverPubkeys, {
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_id: i.receiverPk
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});
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// set rsa public key used to encrypt
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rsa.init(pk.publicKey);
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// process new values
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i.encryptedKey = rsa.encrypt(i.key);
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i.senderPk = senderPrivkey._id;
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i.signature = rsa.sign([i.iv, util.str2Base64(i.id), util.str2Base64(i.senderPk), i.encryptedKey, i.ciphertext]);
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// delete old ones
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delete i.key;
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delete i.receiverPk;
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// encrypt item for user
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self.encryptItemForUser(i, receiverPk.publicKey, senderPrivkey._id);
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});
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return encryptedList;
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return list;
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};
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/**
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@ -74,42 +91,30 @@
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* @param senderPubkeys [Array] A list of public keys used to verify
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* @param receiverPrivkey [Array] The receiver's private key used to decrypt
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*/
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this.decryptListForUser = function(encryptedList, senderPubkeys, receiverPrivkey) {
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var j, self = this;
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this.decryptListForUser = function(list, senderPubkeys, receiverPrivkey) {
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var senderPk, j,
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self = this;
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// set receiver private key
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rsa.init(null, receiverPrivkey.privateKey);
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// decrypt keys for user
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encryptedList.forEach(function(i) {
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// fetch correct public key
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var pk = _.findWhere(senderPubkeys, {
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list.forEach(function(i) {
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// fetch correct public key for verification
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senderPk = null;
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senderPk = _.findWhere(senderPubkeys, {
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_id: i.senderPk
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});
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// set rsa public key used to verify
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rsa.init(pk.publicKey);
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// verify signature
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if (!rsa.verify([i.iv, util.str2Base64(i.id), util.str2Base64(i.senderPk), i.encryptedKey, i.ciphertext], i.signature)) {
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throw new Error('Verifying RSA signature failed!');
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}
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// process new values
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i.key = rsa.decrypt(i.encryptedKey);
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// delete old values
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delete i.signature;
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delete i.encryptedKey;
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delete i.senderPk;
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// decrypt item for user
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self.decryptItemForUser(i, senderPk.publicKey);
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});
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// decrypt list
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var decryptedList = this.decryptList(encryptedList);
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// add plaintext to list
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for (j = 0; j < decryptedList.length; j++) {
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decryptedList[j] = decryptedList[j].plaintext;
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// set plaintext as list item
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for (j = 0; j < list.length; j++) {
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list[j] = list[j].plaintext;
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}
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return decryptedList;
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return list;
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};
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};
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@ -71,27 +71,6 @@ asyncTest("AES en/decrypt (Async/Worker)", 2, function() {
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});
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});
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asyncTest("AES en/decrypt batch (Async/Worker)", 5, function() {
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// generate test data
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var collection, list, td = new TestData();
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collection = td.getEmailCollection(100);
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list = td.packageCollectionForEncryption(collection, crypto_test.keySize, crypto_test.ivSize);
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crypto_test.crypto.aesEncryptList(list, function(encryptedList) {
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ok(encryptedList, 'Encrypt list');
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equal(encryptedList.length, list.length, 'Length of list');
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crypto_test.crypto.aesDecryptList(encryptedList, function(decryptedList) {
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ok(decryptedList, 'Decrypt list');
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equal(decryptedList.length, list.length, 'Length of list');
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deepEqual(decryptedList, list, 'Decrypted list is correct');
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start();
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});
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});
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});
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asyncTest("AES/RSA encrypt batch for User (Async/Worker)", 2, function() {
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// generate test data
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var collection, td = new TestData();
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