1 line
5.3 KiB
JSON
1 line
5.3 KiB
JSON
{"ast":null,"code":"'use strict';\n\nvar assert = require('minimalistic-assert');\n\nvar inherits = require('inherits');\n\nvar Cipher = require('./cipher');\n\nvar DES = require('./des');\n\nfunction EDEState(type, key) {\n assert.equal(key.length, 24, 'Invalid key length');\n var k1 = key.slice(0, 8);\n var k2 = key.slice(8, 16);\n var k3 = key.slice(16, 24);\n\n if (type === 'encrypt') {\n this.ciphers = [DES.create({\n type: 'encrypt',\n key: k1\n }), DES.create({\n type: 'decrypt',\n key: k2\n }), DES.create({\n type: 'encrypt',\n key: k3\n })];\n } else {\n this.ciphers = [DES.create({\n type: 'decrypt',\n key: k3\n }), DES.create({\n type: 'encrypt',\n key: k2\n }), DES.create({\n type: 'decrypt',\n key: k1\n })];\n }\n}\n\nfunction EDE(options) {\n Cipher.call(this, options);\n var state = new EDEState(this.type, this.options.key);\n this._edeState = state;\n}\n\ninherits(EDE, Cipher);\nmodule.exports = EDE;\n\nEDE.create = function create(options) {\n return new 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strict';\n\nvar assert = require('minimalistic-assert');\nvar inherits = require('inherits');\n\nvar Cipher = require('./cipher');\nvar DES = require('./des');\n\nfunction EDEState(type, key) {\n assert.equal(key.length, 24, 'Invalid key length');\n\n var k1 = key.slice(0, 8);\n var k2 = key.slice(8, 16);\n var k3 = key.slice(16, 24);\n\n if (type === 'encrypt') {\n this.ciphers = [\n DES.create({ type: 'encrypt', key: k1 }),\n DES.create({ type: 'decrypt', key: k2 }),\n DES.create({ type: 'encrypt', key: k3 })\n ];\n } else {\n this.ciphers = [\n DES.create({ type: 'decrypt', key: k3 }),\n DES.create({ type: 'encrypt', key: k2 }),\n DES.create({ type: 'decrypt', key: k1 })\n ];\n }\n}\n\nfunction EDE(options) {\n Cipher.call(this, options);\n\n var state = new EDEState(this.type, this.options.key);\n this._edeState = state;\n}\ninherits(EDE, Cipher);\n\nmodule.exports = EDE;\n\nEDE.create = function create(options) {\n return new EDE(options);\n};\n\nEDE.prototype._update = function _update(inp, inOff, out, outOff) {\n var state = this._edeState;\n\n state.ciphers[0]._update(inp, inOff, out, outOff);\n state.ciphers[1]._update(out, outOff, out, outOff);\n state.ciphers[2]._update(out, outOff, out, outOff);\n};\n\nEDE.prototype._pad = DES.prototype._pad;\nEDE.prototype._unpad = DES.prototype._unpad;\n"]},"metadata":{},"sourceType":"script"} |