8889841cindex.js000066600000000554150443226520006224 0ustar00var modeModules = { ECB: require('./ecb'), CBC: require('./cbc'), CFB: require('./cfb'), CFB8: require('./cfb8'), CFB1: require('./cfb1'), OFB: require('./ofb'), CTR: require('./ctr'), GCM: require('./ctr') } var modes = require('./list.json') for (var key in modes) { modes[key].module = modeModules[modes[key].mode] } module.exports = modes cfb1.js000066600000001625150443226520005730 0ustar00var Buffer = require('safe-buffer').Buffer function encryptByte (self, byteParam, decrypt) { var pad var i = -1 var len = 8 var out = 0 var bit, value while (++i < len) { pad = self._cipher.encryptBlock(self._prev) bit = (byteParam & (1 << (7 - i))) ? 0x80 : 0 value = pad[0] ^ bit out += ((value & 0x80) >> (i % 8)) self._prev = shiftIn(self._prev, decrypt ? bit : value) } return out } function shiftIn (buffer, value) { var len = buffer.length var i = -1 var out = Buffer.allocUnsafe(buffer.length) buffer = Buffer.concat([buffer, Buffer.from([value])]) while (++i < len) { out[i] = buffer[i] << 1 | buffer[i + 1] >> (7) } return out } exports.encrypt = function (self, chunk, decrypt) { var len = chunk.length var out = Buffer.allocUnsafe(len) var i = -1 while (++i < len) { out[i] = encryptByte(self, chunk[i], decrypt) } return out } ofb.js000066600000000637150443226520005665 0ustar00var xor = require('buffer-xor') function getBlock (self) { self._prev = self._cipher.encryptBlock(self._prev) return self._prev } exports.encrypt = function (self, chunk) { while (self._cache.length < chunk.length) { self._cache = Buffer.concat([self._cache, getBlock(self)]) } var pad = self._cache.slice(0, chunk.length) self._cache = self._cache.slice(chunk.length) return xor(chunk, pad) } ctr.js000066600000001614150443226520005703 0ustar00var xor = require('buffer-xor') var Buffer = require('safe-buffer').Buffer var incr32 = require('../incr32') function getBlock (self) { var out = self._cipher.encryptBlockRaw(self._prev) incr32(self._prev) return out } var blockSize = 16 exports.encrypt = function (self, chunk) { var chunkNum = Math.ceil(chunk.length / blockSize) var start = self._cache.length self._cache = Buffer.concat([ self._cache, Buffer.allocUnsafe(chunkNum * blockSize) ]) for (var i = 0; i < chunkNum; i++) { var out = getBlock(self) var offset = start + i * blockSize self._cache.writeUInt32BE(out[0], offset + 0) self._cache.writeUInt32BE(out[1], offset + 4) self._cache.writeUInt32BE(out[2], offset + 8) self._cache.writeUInt32BE(out[3], offset + 12) } var pad = self._cache.slice(0, chunk.length) self._cache = self._cache.slice(chunk.length) return xor(chunk, pad) } list.json000066600000006017150443226520006425 0ustar00{ "aes-128-ecb": { "cipher": "AES", "key": 128, "iv": 0, "mode": "ECB", "type": "block" }, "aes-192-ecb": { "cipher": "AES", "key": 192, "iv": 0, "mode": "ECB", "type": "block" }, "aes-256-ecb": { "cipher": "AES", "key": 256, "iv": 0, "mode": "ECB", "type": "block" }, "aes-128-cbc": { "cipher": "AES", "key": 128, "iv": 16, "mode": "CBC", "type": "block" }, "aes-192-cbc": { "cipher": "AES", "key": 192, "iv": 16, "mode": "CBC", "type": "block" }, "aes-256-cbc": { "cipher": "AES", "key": 256, "iv": 16, "mode": "CBC", "type": "block" }, "aes128": { "cipher": "AES", "key": 128, "iv": 16, "mode": "CBC", "type": "block" }, "aes192": { "cipher": "AES", "key": 192, "iv": 16, "mode": "CBC", "type": "block" }, "aes256": { "cipher": "AES", "key": 256, "iv": 16, "mode": "CBC", "type": "block" }, "aes-128-cfb": { "cipher": "AES", "key": 128, "iv": 16, "mode": "CFB", "type": "stream" }, "aes-192-cfb": { "cipher": "AES", "key": 192, "iv": 16, "mode": "CFB", "type": "stream" }, "aes-256-cfb": { "cipher": "AES", "key": 256, "iv": 16, "mode": "CFB", "type": "stream" }, "aes-128-cfb8": { "cipher": "AES", "key": 128, "iv": 16, "mode": "CFB8", "type": "stream" }, "aes-192-cfb8": { "cipher": "AES", "key": 192, "iv": 16, "mode": "CFB8", "type": "stream" }, "aes-256-cfb8": { "cipher": "AES", "key": 256, "iv": 16, "mode": "CFB8", "type": "stream" }, "aes-128-cfb1": { "cipher": "AES", "key": 128, "iv": 16, "mode": "CFB1", "type": "stream" }, "aes-192-cfb1": { "cipher": "AES", "key": 192, "iv": 16, "mode": "CFB1", "type": "stream" }, "aes-256-cfb1": { "cipher": "AES", "key": 256, "iv": 16, "mode": "CFB1", "type": "stream" }, "aes-128-ofb": { "cipher": "AES", "key": 128, "iv": 16, "mode": "OFB", "type": "stream" }, "aes-192-ofb": { "cipher": "AES", "key": 192, "iv": 16, "mode": "OFB", "type": "stream" }, "aes-256-ofb": { "cipher": "AES", "key": 256, "iv": 16, "mode": "OFB", "type": "stream" }, "aes-128-ctr": { "cipher": "AES", "key": 128, "iv": 16, "mode": "CTR", "type": "stream" }, "aes-192-ctr": { "cipher": "AES", "key": 192, "iv": 16, "mode": "CTR", "type": "stream" }, "aes-256-ctr": { "cipher": "AES", "key": 256, "iv": 16, "mode": "CTR", "type": "stream" }, "aes-128-gcm": { "cipher": "AES", "key": 128, "iv": 12, "mode": "GCM", "type": "auth" }, "aes-192-gcm": { "cipher": "AES", "key": 192, "iv": 12, "mode": "GCM", "type": "auth" }, "aes-256-gcm": { "cipher": "AES", "key": 256, "iv": 12, "mode": "GCM", "type": "auth" } } ecb.js000066600000000257150443226520005646 0ustar00exports.encrypt = function (self, block) { return self._cipher.encryptBlock(block) } exports.decrypt = function (self, block) { return self._cipher.decryptBlock(block) } cfb8.js000066600000001006150443226520005730 0ustar00var Buffer = require('safe-buffer').Buffer function encryptByte (self, byteParam, decrypt) { var pad = self._cipher.encryptBlock(self._prev) var out = pad[0] ^ byteParam self._prev = Buffer.concat([ self._prev.slice(1), Buffer.from([decrypt ? byteParam : out]) ]) return out } exports.encrypt = function (self, chunk, decrypt) { var len = chunk.length var out = Buffer.allocUnsafe(len) var i = -1 while (++i < len) { out[i] = encryptByte(self, chunk[i], decrypt) } return out } cfb.js000066600000001545150443226520005650 0ustar00var Buffer = require('safe-buffer').Buffer var xor = require('buffer-xor') function encryptStart (self, data, decrypt) { var len = data.length var out = xor(data, self._cache) self._cache = self._cache.slice(len) self._prev = Buffer.concat([self._prev, decrypt ? data : out]) return out } exports.encrypt = function (self, data, decrypt) { var out = Buffer.allocUnsafe(0) var len while (data.length) { if (self._cache.length === 0) { self._cache = self._cipher.encryptBlock(self._prev) self._prev = Buffer.allocUnsafe(0) } if (self._cache.length <= data.length) { len = self._cache.length out = Buffer.concat([out, encryptStart(self, data.slice(0, len), decrypt)]) data = data.slice(len) } else { out = Buffer.concat([out, encryptStart(self, data, decrypt)]) break } } return out } cbc.js000066600000000526150443226520005643 0ustar00var 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) }