| Path : /var/www/html/transfersh/SecureShareMail/node_modules/bufferutil/ |
|
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| Current File : //var/www/html/transfersh/SecureShareMail/node_modules/bufferutil/fallback.js |
'use strict';
/**
* Masks a buffer using the given mask.
*
* @param {Buffer} source The buffer to mask
* @param {Buffer} mask The mask to use
* @param {Buffer} output The buffer where to store the result
* @param {Number} offset The offset at which to start writing
* @param {Number} length The number of bytes to mask.
* @public
*/
const mask = (source, mask, output, offset, length) => {
for (var i = 0; i < length; i++) {
output[offset + i] = source[i] ^ mask[i & 3];
}
};
/**
* Unmasks a buffer using the given mask.
*
* @param {Buffer} buffer The buffer to unmask
* @param {Buffer} mask The mask to use
* @public
*/
const unmask = (buffer, mask) => {
// Required until https://github.com/nodejs/node/issues/9006 is resolved.
const length = buffer.length;
for (var i = 0; i < length; i++) {
buffer[i] ^= mask[i & 3];
}
};
module.exports = { mask, unmask };