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16 lines
415 B
16 lines
415 B
var xor = require('buffer-xor')
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function getBlock (self) {
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self._prev = self._cipher.encryptBlock(self._prev)
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return self._prev
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}
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exports.encrypt = function (self, chunk) {
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while (self._cache.length < chunk.length) {
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self._cache = Buffer.concat([self._cache, getBlock(self)])
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}
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var pad = self._cache.slice(0, chunk.length)
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self._cache = self._cache.slice(chunk.length)
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return xor(chunk, pad)
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}
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