obfuscate.js | |
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| (c) 2012 Beau Sorensen Contributors: Jacob Chapel MIT Licensed For all details and documentation: https://github.com/tblobaum/mongoose-troop | |
Obfuscate | |
| Dependencies | var crypto = require('crypto')
, nestedPath = require('../helpers').nestedPath |
| Plugin | function obfuscate (schema, options) {
options || (options = {}) |
| Options | var encryptPath = options.encryptPath || 'obfuscate' // Getter path for encrypting
, decryptPath = options.decryptPath || 'deobfuscate' // Setter path for decrypting
, algorithm = options.algorithm || 'aes-256-cbc' // Encryption algorithm
, key = options.key || 'secret' // Encryption key
, from = options.from || 'utf8' // Original encoding
, to = options.to || 'hex' // Conversion encoding |
| Encrypt a string with the options provided | function encrypt (str) {
var cipher = crypto.createCipher(algorithm, key)
, crypted = cipher.update(str, from, to) + cipher.final(to)
return crypted;
} |
| Decrypt an encrypted string | function decrypt (str) {
var decipher = crypto.createDecipher(algorithm, key)
, dec = decipher.update(str, to, from) + decipher.final(from)
return dec;
} |
| Recursively encode all ObjectID's in schema | function encode (schema, doc, toEncrypt) {
if (!doc) return false
var method = (toEncrypt) ? encrypt : decrypt
, obj = (doc.toObject) ? doc.toObject() : doc |
| Traverse through all schema paths | schema.eachPath(function (name, path) {
var val = nestedPath(doc, name) |
| ObjectID paths | if (path.instance === 'ObjectID' && val) {
nestedPath(obj, name, method(val.toString()))
}
if (path.casterConstructor) { |
| Array of DBRefs | if (!!~path.casterConstructor.toString().indexOf('ObjectId')) {
nestedPath(obj, name).forEach(function (v, k) {
nestedPath(obj, name)[k] = method(val[k].toString())
}) |
| Array of embedded schemas | } else if (!!~path.casterConstructor.toString().indexOf('EmbeddedDocument')) {
nestedPath(obj, name).forEach(function (v, k) {
nestedPath(obj, name)[k] = encode(path.schema, val[k], toEncrypt)
})
}
}
})
return obj
} |
| Add encryption methods to both instance and model | ;['method'
, 'static'
].forEach(function(method) {
schema[method]({
encrypt: encrypt
, decrypt: decrypt
})
}) |
| Manually encode an object through the model | schema.static('encode', function (obj, toEncrypt) {
if (!obj) return false
return encode(schema, obj, toEncrypt)
}) |
| Encode an instance when the virtual is called | schema.virtual(encryptPath).get(function () {
return encode(schema, this, true)
}) |
| Decode an object and set it to the instance | schema.virtual(decryptPath).set(function (v) {
var doc = encode(schema, v, false)
for (var prop in doc) {
this[prop] = doc[prop]
}
})
}
module.exports = obfuscate
|