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index.js
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index.js
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'use strict'
/*
* adonis-framework
*
* (c) Harminder Virk <virk@adonisjs.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
const Encryptor = require('simple-encryptor')
const GE = require('@adonisjs/generic-exceptions')
/**
* This class is used to encrypt/decrypt values using a secure
* key and also base64 `encode` and `decode` strings.
*
* @binding Adonis/Src/Encryption
* @alias Encryption
* @group Core
* @singleton
*
* @class Encryption
* @constructor
*/
class Encryption {
constructor (appKey, options) {
/**
* Throw exception when app key doesn't exists.
*/
if (!appKey) {
throw GE.RuntimeException.missingAppKey('Encryption')
}
this.appKey = appKey
this.encryptor = Encryptor(Object.assign({ key: appKey }, options))
}
/**
* Returns a new instance of encrypter with different options
*
* @method getInstance
*
* @param {Object} options
*
* @return {Encryption}
*/
getInstance (options) {
return new this.constructor(this.appKey, options)
}
/**
* Encrypt a string, number or an object
*
* @method encrypt
*
* @param {Mixed} input
*
* @return {String}
*
* @example
* ```js
* Encryption.encrypt('hello world')
* Encryption.encrypt({ name: 'virk' })
* ```
*/
encrypt (input) {
return this.encryptor.encrypt(input)
}
/**
* Decrypt encoded string
*
* @method decrypt
*
* @param {String} cipherText
*
* @return {Mixed}
*
* @example
* ```js
* Encryption.decrypt(encryptedValue)
* ```
*/
decrypt (cipherText) {
return this.encryptor.decrypt(cipherText)
}
/**
* Base64 encode a string
*
* @method base64Encode
*
* @param {String} input
*
* @return {String}
*
* @example
* ```js
* Encryption.base64Encode('hello world')
* ```
*/
base64Encode (input) {
return Buffer.from(input).toString('base64')
}
/**
* Decode a previously encoded base64 string or buffer
*
* @method base64Decode
*
* @param {String|Buffer} encodedText
*
* @return {String}
*
* @example
* ```js
* Encryption.base64Decode(encodedValue)
* ```
*/
base64Decode (encodedText) {
const buff = Buffer.isBuffer(encodedText) ? encodedText : Buffer.from(encodedText, 'base64')
return buff.toString('utf8')
}
}
module.exports = Encryption