unpad.js
505 Bytes
/*
* pkcs7.unpad
* https://github.com/brightcove/pkcs7
*
* Copyright (c) 2014 Brightcove
* Licensed under the apache2 license.
*/
'use strict';
/**
* Returns the subarray of a Uint8Array without PKCS#7 padding.
* @param padded {Uint8Array} unencrypted bytes that have been padded
* @return {Uint8Array} the unpadded bytes
* @see http://tools.ietf.org/html/rfc5652
*/
module.exports = function unpad(padded) {
return padded.subarray(0, padded.byteLength - padded[padded.byteLength - 1]);
};