var xor = require('buffer-xor') | |
exports.encrypt = function (self, block) { | |
var data = xor(block, self._prev) | |
self._prev = self._cipher.encryptBlock(data) | |
return self._prev | |
} | |
exports.decrypt = function (self, block) { | |
var pad = self._prev | |
self._prev = block | |
var out = self._cipher.decryptBlock(block) | |
return xor(out, pad) | |
} |