47 lines
1,014 B
JavaScript
47 lines
1,014 B
JavaScript
/**
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* Small module for some helpers that wrap sjcl with some good practices.
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*/
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var sjcl = require('../../lib/sjcl');
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var log = require('../log.js');
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var _ = require('lodash');
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var SALT = 'copay random string NWRlNmExMTE4NzIzYzYyYWMwODU1MTdkN';
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var SEPARATOR = '&';
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var defaultOptions = {
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adata: '',
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cipher: 'aes',
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ks: 128,
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iter: 2000,
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mode: 'ccm',
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ts: 64
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};
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module.exports = {
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kdf: function(value1, value2) {
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return sjcl.codec.base64.fromBits(sjcl.misc.pbkdf2(value1 + value2, SALT));
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},
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/**
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* Encrypts symmetrically using a passphrase
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*/
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encrypt: function(key, message) {
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if (!_.isString(message)) {
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message = JSON.stringify(message);
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}
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return sjcl.encrypt(key, message);
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},
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/**
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* Decrypts symmetrically using a passphrase
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*/
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decrypt: function(key, cypher) {
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var output = {};
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try {
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return sjcl.decrypt(key, cypher);
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} catch (e) {
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log.error('Decryption failed due to error: ' + e.message);
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return null;
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}
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}
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};
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