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547 lines
17 KiB
547 lines
17 KiB
(function(generator) {
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if (typeof exports === 'object') {
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exports.mod = require('./she_c.js')
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generator(exports, true)
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} else {
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let exports = {}
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exports.mod = {}
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window.she = generator(exports, false)
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}
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})(function(exports, isNodeJs) {
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const MCLBN_CURVE_FP254BNB = 0
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const MCLBN_CURVE_FP382_1 = 1
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const MCLBN_CURVE_FP382_2 = 2
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const MCLBN_FP_UNIT_SIZE = 4
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const MCLBN_FP_SIZE = MCLBN_FP_UNIT_SIZE * 8
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const MCLBN_G1_SIZE = MCLBN_FP_SIZE * 3
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const MCLBN_G2_SIZE = MCLBN_FP_SIZE * 6
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const MCLBN_GT_SIZE = MCLBN_FP_SIZE * 12
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const SHE_SECRETKEY_SIZE = MCLBN_FP_SIZE * 2
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const SHE_PUBLICKEY_SIZE = MCLBN_G1_SIZE + MCLBN_G2_SIZE
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const SHE_CIPHERTEXT_G1_SIZE = MCLBN_G1_SIZE * 2
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const SHE_CIPHERTEXT_G2_SIZE = MCLBN_G2_SIZE * 2
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const SHE_CIPHERTEXT_GT_SIZE = MCLBN_GT_SIZE * 4
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let capi = {}
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exports.capi = capi
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let mod = exports.mod
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/*
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init she
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@param range [in] table size of DLP ; require 8 * table size
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@param tryNum [in] how many search ; O(tryNum) time
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can decrypt (range * tryNum) range value
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*/
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exports.init = (range = 1024, tryNum = 1024) => {
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console.log('init')
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if (!isNodeJs) {
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fetch('she_c.wasm')
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.then(response => response.arrayBuffer())
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.then(buffer => new Uint8Array(buffer))
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.then(binary => { Module(mod) })
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}
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return new Promise((resolve) => {
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mod.onRuntimeInitialized = () => {
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const f = (exportedFuncs) => {
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exportedFuncs.forEach(func => {
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capi[func.exportName] = mod.cwrap(func.name, func.returns, func.args)
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})
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define_extra_functions(mod)
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capi.sheInit()
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console.log(`initializing sheSetRangeForDLP(range=${range}, tryNum=${tryNum})`)
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const r = capi.sheSetRangeForDLP(range, tryNum)
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console.log('finished ' + r)
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resolve()
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}
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if (isNodeJs) {
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const fs = require('fs')
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const jsonStr = fs.readFileSync('./exported-she.json')
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f(JSON.parse(jsonStr))
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} else {
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fetch('exported-she.json')
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.then(response => response.json())
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.then(exportedFuncs => f(exportedFuncs))
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}
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}
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})
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}
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const ptrToStr = function(pos, n) {
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let s = ''
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for (let i = 0; i < n; i++) {
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s += String.fromCharCode(mod.HEAP8[pos + i])
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}
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return s
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}
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const Uint8ArrayToMem = function(pos, buf) {
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for (let i = 0; i < buf.length; i++) {
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mod.HEAP8[pos + i] = buf[i]
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}
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}
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const AsciiStrToMem = function(pos, s) {
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for (let i = 0; i < s.length; i++) {
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mod.HEAP8[pos + i] = s.charCodeAt(i)
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}
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}
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const copyToUint32Array = function(a, pos) {
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a.set(mod.HEAP32.subarray(pos / 4, pos / 4 + a.length))
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// for (let i = 0; i < a.length; i++) {
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// a[i] = mod.HEAP32[pos / 4 + i]
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// }
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}
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const copyFromUint32Array = function(pos, a) {
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for (let i = 0; i < a.length; i++) {
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mod.HEAP32[pos / 4 + i] = a[i]
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}
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}
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exports.toHex = function(a, start, n) {
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let s = ''
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for (let i = 0; i < n; i++) {
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s += ('0' + a[start + i].toString(16)).slice(-2)
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}
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return s
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}
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// Uint8Array to hex string
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exports.toHexStr = function(a) {
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return exports.toHex(a, 0, a.length)
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}
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// hex string to Uint8Array
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exports.fromHexStr = function(s) {
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if (s.length & 1) throw('fromHexStr:length must be even ' + s.length)
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let n = s.length / 2
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let a = new Uint8Array(n)
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for (let i = 0; i < n; i++) {
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a[i] = parseInt(s.slice(i * 2, i * 2 + 2), 16)
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}
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return a
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}
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const wrap_outputString = function(func, doesReturnString = true) {
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return function(x, ioMode = 0) {
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let maxBufSize = 2048
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let stack = mod.Runtime.stackSave()
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let pos = mod.Runtime.stackAlloc(maxBufSize)
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let n = func(pos, maxBufSize, x, ioMode)
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if (n < 0) {
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throw('err gen_str:' + x)
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}
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if (doesReturnString) {
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let s = ptrToStr(pos, n)
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mod.Runtime.stackRestore(stack)
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return s
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} else {
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let a = new Uint8Array(n)
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for (let i = 0; i < n; i++) {
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a[i] = mod.HEAP8[pos + i]
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}
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mod.Runtime.stackRestore(stack)
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return a
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}
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}
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}
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const wrap_outputArray = function(func) {
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return wrap_outputString(func, false)
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}
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/*
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argNum : n
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func(x0, ..., x_(n-1), buf, ioMode)
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=> func(x0, ..., x_(n-1), pos, buf.length, ioMode)
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*/
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const wrap_input = function(func, argNum, returnValue = false) {
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return function() {
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const args = [...arguments]
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let buf = args[argNum]
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let ioMode = args[argNum + 1] // may undefined
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let stack = mod.Runtime.stackSave()
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let pos = mod.Runtime.stackAlloc(buf.length)
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if (typeof(buf) == "string") {
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AsciiStrToMem(pos, buf)
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} else {
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Uint8ArrayToMem(pos, buf)
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}
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let r = func(...args.slice(0, argNum), pos, buf.length, ioMode)
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mod.Runtime.stackRestore(stack)
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if (returnValue) return r
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if (r) throw('err wrap_input ' + buf)
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}
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}
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const callSetter = function(func, a, p1, p2) {
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let pos = mod._malloc(a.length * 4)
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func(pos, p1, p2) // p1, p2 may be undefined
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copyToUint32Array(a, pos)
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mod._free(pos)
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}
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const callGetter = function(func, a, p1, p2) {
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let pos = mod._malloc(a.length * 4)
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mod.HEAP32.set(a, pos / 4)
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let s = func(pos, p1, p2)
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mod._free(pos)
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return s
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}
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const wrap_dec = function(func) {
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return function(sec, c) {
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let stack = mod.Runtime.stackSave()
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let pos = mod.Runtime.stackAlloc(8)
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let r = func(pos, sec, c)
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mod.Runtime.stackRestore(stack)
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if (r != 0) throw('sheDec')
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let v = mod.HEAP32[pos / 4]
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return v
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}
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}
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const callEnc = function(func, cstr, pub, m) {
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let c = new cstr()
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let stack = mod.Runtime.stackSave()
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let cPos = mod.Runtime.stackAlloc(c.a_.length * 4)
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let pubPos = mod.Runtime.stackAlloc(pub.length * 4)
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copyFromUint32Array(pubPos, pub);
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func(cPos, pubPos, m)
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copyToUint32Array(c.a_, cPos)
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mod.Runtime.stackRestore(stack)
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return c
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}
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// return func(x, y)
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const callAddSub = function(func, cstr, x, y) {
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let z = new cstr()
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let stack = mod.Runtime.stackSave()
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let xPos = mod.Runtime.stackAlloc(x.length * 4)
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let yPos = mod.Runtime.stackAlloc(y.length * 4)
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let zPos = mod.Runtime.stackAlloc(z.a_.length * 4)
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copyFromUint32Array(xPos, x);
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copyFromUint32Array(yPos, y);
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func(zPos, xPos, yPos)
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copyToUint32Array(z.a_, zPos)
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mod.Runtime.stackRestore(stack)
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return z
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}
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// return func(x, y)
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const callMulInt = function(func, cstr, x, y) {
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let z = new cstr()
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let stack = mod.Runtime.stackSave()
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let xPos = mod.Runtime.stackAlloc(x.length * 4)
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let zPos = mod.Runtime.stackAlloc(z.a_.length * 4)
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copyFromUint32Array(xPos, x);
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func(zPos, xPos, y)
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copyToUint32Array(z.a_, zPos)
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mod.Runtime.stackRestore(stack)
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return z
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}
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// return func(c)
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const callDec = function(func, sec, c) {
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let stack = mod.Runtime.stackSave()
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let secPos = mod.Runtime.stackAlloc(sec.length * 4)
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let cPos = mod.Runtime.stackAlloc(c.length * 4)
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copyFromUint32Array(secPos, sec);
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copyFromUint32Array(cPos, c);
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let r = func(secPos, cPos)
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mod.Runtime.stackRestore(stack)
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return r
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}
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// reRand(c)
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const callReRand = function(func, c, pub) {
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let stack = mod.Runtime.stackSave()
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let cPos = mod.Runtime.stackAlloc(c.length * 4)
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let pubPos = mod.Runtime.stackAlloc(pub.length * 4)
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copyFromUint32Array(cPos, c);
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copyFromUint32Array(pubPos, pub);
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let r = func(cPos, pubPos)
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copyToUint32Array(c, cPos)
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mod.Runtime.stackRestore(stack)
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if (r) throw('callReRand err')
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}
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// convertFrom
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const callConvertFrom = function(func, pub, c) {
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let ct = new exports.CipherTextGT()
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let stack = mod.Runtime.stackSave()
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let ctPos = mod.Runtime.stackAlloc(ct.a_.length * 4)
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let pubPos = mod.Runtime.stackAlloc(pub.length * 4)
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let cPos = mod.Runtime.stackAlloc(c.length * 4)
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copyFromUint32Array(pubPos, pub);
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copyFromUint32Array(cPos, c);
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let r = func(ctPos, pubPos, cPos)
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copyToUint32Array(ct.a_, ctPos)
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mod.Runtime.stackRestore(stack)
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if (r) throw('callConvertFrom err')
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return ct
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}
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const define_extra_functions = function(mod) {
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capi.she_free = function(p) {
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mod._free(p)
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}
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capi.sheSecretKey_malloc = function() {
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return mod._malloc(SHE_SECRETKEY_SIZE)
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}
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capi.shePublicKey_malloc = function() {
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return mod._malloc(SHE_PUBLICKEY_SIZE)
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}
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capi.sheCipherTextG2_malloc = function() {
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return mod._malloc(SHE_CIPHERTEXT_G2_SIZE)
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}
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capi.sheCipherTextGT_malloc = function() {
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return mod._malloc(SHE_CIPHERTEXT_GT_SIZE)
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}
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capi.sheCipherTextG1_malloc = function() {
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return mod._malloc(SHE_CIPHERTEXT_G1_SIZE)
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}
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capi.sheSecretKeySerialize = wrap_outputArray(capi._sheSecretKeySerialize)
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capi.sheSecretKeyDeserialize = wrap_input(capi._sheSecretKeyDeserialize, 1)
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capi.shePublicKeySerialize = wrap_outputArray(capi._shePublicKeySerialize)
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capi.shePublicKeyDeserialize = wrap_input(capi._shePublicKeyDeserialize, 1)
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capi.sheCipherTextG1Serialize = wrap_outputArray(capi._sheCipherTextG1Serialize)
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capi.sheCipherTextG1Deserialize = wrap_input(capi._sheCipherTextG1Deserialize, 1)
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capi.sheDecG1 = wrap_dec(capi._sheDecG1)
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capi.sheCipherTextG2Serialize = wrap_outputArray(capi._sheCipherTextG2Serialize)
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capi.sheCipherTextG2Deserialize = wrap_input(capi._sheCipherTextG2Deserialize, 1)
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capi.sheDecG2 = wrap_dec(capi._sheDecG2)
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capi.sheCipherTextGTSerialize = wrap_outputArray(capi._sheCipherTextGTSerialize)
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capi.sheCipherTextGTDeserialize = wrap_input(capi._sheCipherTextGTDeserialize, 1)
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capi.sheDecGT = wrap_dec(capi._sheDecGT)
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capi.sheInit = function(curveType = MCLBN_CURVE_FP254BNB) {
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let r = capi._sheInit(curveType, MCLBN_FP_UNIT_SIZE)
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console.log('sheInit ' + r)
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if (r) throw('sheInit')
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}
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class Common {
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constructor(size) {
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this.a_ = new Uint32Array(size / 4)
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}
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fromHexStr(s) {
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this.deserialize(exports.fromHexStr(s))
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}
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toHexStr() {
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return exports.toHexStr(this.serialize())
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}
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dump(msg = '') {
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console.log(msg + this.toHexStr())
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}
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}
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exports.SecretKey = class extends Common {
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constructor() {
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super(SHE_SECRETKEY_SIZE)
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}
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serialize() {
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return callGetter(capi.sheSecretKeySerialize, this.a_)
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}
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deserialize(s) {
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callSetter(capi.sheSecretKeyDeserialize, this.a_, s)
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}
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setByCSPRNG() {
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let stack = mod.Runtime.stackSave()
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let secPos = mod.Runtime.stackAlloc(this.a_.length * 4)
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capi.sheSecretKeySetByCSPRNG(secPos)
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copyToUint32Array(this.a_, secPos)
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mod.Runtime.stackRestore(stack)
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}
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getPublicKey() {
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let pub = new exports.PublicKey()
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let stack = mod.Runtime.stackSave()
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let secPos = mod.Runtime.stackAlloc(this.a_.length * 4)
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let pubPos = mod.Runtime.stackAlloc(pub.a_.length * 4)
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copyFromUint32Array(secPos, this.a_)
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capi.sheGetPublicKey(pubPos, secPos)
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copyToUint32Array(pub.a_, pubPos)
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mod.Runtime.stackRestore(stack)
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return pub
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}
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dec(c) {
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let dec = null
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if (exports.CipherTextG1.prototype.isPrototypeOf(c)) {
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dec = capi.sheDecG1
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} else if (exports.CipherTextG2.prototype.isPrototypeOf(c)) {
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dec = capi.sheDecG2
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} else if (exports.CipherTextGT.prototype.isPrototypeOf(c)) {
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dec = capi.sheDecGT
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} else {
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throw('exports.SecretKey.dec:not supported')
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}
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return callDec(dec, this.a_, c.a_)
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}
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}
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exports.getSecretKeyFromHexStr = function(s) {
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r = new exports.SecretKey()
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r.fromHexStr(s)
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return r
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}
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exports.PublicKey = class extends Common {
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constructor() {
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super(SHE_PUBLICKEY_SIZE)
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}
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serialize() {
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return callGetter(capi.shePublicKeySerialize, this.a_)
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}
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deserialize(s) {
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callSetter(capi.shePublicKeyDeserialize, this.a_, s)
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}
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encG1(m) {
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return callEnc(capi.sheEnc32G1, exports.CipherTextG1, this.a_, m)
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}
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encG2(m) {
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return callEnc(capi.sheEnc32G2, exports.CipherTextG2, this.a_, m)
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}
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encGT(m) {
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return callEnc(capi.sheEnc32GT, exports.CipherTextGT, this.a_, m)
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}
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reRand(c) {
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let reRand = null
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if (exports.CipherTextG1.prototype.isPrototypeOf(c)) {
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reRand = capi.sheReRandG1
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} else if (exports.CipherTextG2.prototype.isPrototypeOf(c)) {
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reRand = capi.sheReRandG2
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} else if (exports.CipherTextGT.prototype.isPrototypeOf(c)) {
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reRand = capi.sheReRandGT
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} else {
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throw('exports.PublicKey.reRand:not supported')
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}
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return callReRand(reRand, c.a_, this.a_)
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}
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convertToCipherTextGT(c) {
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let convertFrom = null
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if (exports.CipherTextG1.prototype.isPrototypeOf(c)) {
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convertFrom = capi.sheConvertFromG1
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} else if (exports.CipherTextG2.prototype.isPrototypeOf(c)) {
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convertFrom = capi.sheConvertFromG2
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} else {
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throw('exports.PublicKey.convertToCipherTextGT:not supported')
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}
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return callConvertFrom(convertFrom, this.a_, c.a_)
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}
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}
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exports.getPublicKeyFromHexStr = function(s) {
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r = new exports.PublicKey()
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r.fromHexStr(s)
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return r
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}
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exports.CipherTextG1 = class extends Common {
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constructor() {
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super(SHE_CIPHERTEXT_G1_SIZE)
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}
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serialize() {
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return callGetter(capi.sheCipherTextG1Serialize, this.a_)
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}
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deserialize(s) {
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callSetter(capi.sheCipherTextG1Deserialize, this.a_, s)
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}
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}
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exports.getCipherTextG1FromHexStr = function(s) {
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r = new exports.CipherTextG1()
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r.fromHexStr(s)
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return r
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}
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exports.CipherTextG2 = class extends Common {
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constructor() {
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super(SHE_CIPHERTEXT_G2_SIZE)
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}
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serialize() {
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return callGetter(capi.sheCipherTextG2Serialize, this.a_)
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}
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deserialize(s) {
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callSetter(capi.sheCipherTextG2Deserialize, this.a_, s)
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}
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}
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exports.getCipherTextG2FromHexStr = function(s) {
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r = new exports.CipherTextG2()
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r.fromHexStr(s)
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return r
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}
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exports.CipherTextGT = class extends Common {
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constructor() {
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super(SHE_CIPHERTEXT_GT_SIZE)
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}
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serialize() {
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return callGetter(capi.sheCipherTextGTSerialize, this.a_)
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}
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deserialize(s) {
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callSetter(capi.sheCipherTextGTDeserialize, this.a_, s)
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}
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}
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|
|
|
exports.getCipherTextGTFromHexStr = function(s) {
|
|
r = new exports.CipherTextGT()
|
|
r.fromHexStr(s)
|
|
return r
|
|
}
|
|
// return x + y
|
|
exports.add = function(x, y) {
|
|
if (x.a_.length != y.a_.length) throw('exports.add:bad type')
|
|
let add = null
|
|
let cstr = null
|
|
if (exports.CipherTextG1.prototype.isPrototypeOf(x)) {
|
|
add = capi.sheAddG1
|
|
cstr = exports.CipherTextG1
|
|
} else if (exports.CipherTextG2.prototype.isPrototypeOf(x)) {
|
|
add = capi.sheAddG2
|
|
cstr = exports.CipherTextG2
|
|
} else if (exports.CipherTextGT.prototype.isPrototypeOf(x)) {
|
|
add = capi.sheAddGT
|
|
cstr = exports.CipherTextGT
|
|
} else {
|
|
throw('exports.add:not supported')
|
|
}
|
|
return callAddSub(add, cstr, x.a_, y.a_)
|
|
}
|
|
// return x - y
|
|
exports.sub = function(x, y) {
|
|
if (x.a_.length != y.a_.length) throw('exports.sub:bad type')
|
|
let sub = null
|
|
let cstr = null
|
|
if (exports.CipherTextG1.prototype.isPrototypeOf(x)) {
|
|
sub = capi.sheSubG1
|
|
cstr = exports.CipherTextG1
|
|
} else if (exports.CipherTextG2.prototype.isPrototypeOf(x)) {
|
|
sub = capi.sheSubG2
|
|
cstr = exports.CipherTextG2
|
|
} else if (exports.CipherTextGT.prototype.isPrototypeOf(x)) {
|
|
sub = capi.sheSubGT
|
|
cstr = exports.CipherTextGT
|
|
} else {
|
|
throw('exports.sub:not supported')
|
|
}
|
|
return callAddSub(sub, cstr, x.a_, y.a_)
|
|
}
|
|
// return x * (int)y
|
|
exports.mulInt = function(x, y) {
|
|
let mulInt = null
|
|
let cstr = null
|
|
if (exports.CipherTextG1.prototype.isPrototypeOf(x)) {
|
|
mulInt = capi.sheMul32G1
|
|
cstr = exports.CipherTextG1
|
|
} else if (exports.CipherTextG2.prototype.isPrototypeOf(x)) {
|
|
mulInt = capi.sheMul32G2
|
|
cstr = exports.CipherTextG2
|
|
} else if (exports.CipherTextGT.prototype.isPrototypeOf(x)) {
|
|
mulInt = capi.sheMul32GT
|
|
cstr = exports.CipherTextGT
|
|
} else {
|
|
throw('exports.mulInt:not supported')
|
|
}
|
|
return callMulInt(mulInt, cstr, x.a_, y)
|
|
}
|
|
// return (G1)x * (G2)y
|
|
exports.mul = function(x, y) {
|
|
if (!exports.CipherTextG1.prototype.isPrototypeOf(x)
|
|
|| !exports.CipherTextG2.prototype.isPrototypeOf(y)) throw('exports.mul:bad type')
|
|
let z = new exports.CipherTextGT()
|
|
let stack = mod.Runtime.stackSave()
|
|
let xPos = mod.Runtime.stackAlloc(x.a_.length * 4)
|
|
let yPos = mod.Runtime.stackAlloc(y.a_.length * 4)
|
|
let zPos = mod.Runtime.stackAlloc(z.a_.length * 4)
|
|
copyFromUint32Array(xPos, x.a_)
|
|
copyFromUint32Array(yPos, y.a_)
|
|
capi.sheMul(zPos, xPos, yPos)
|
|
copyToUint32Array(z.a_, zPos)
|
|
mod.Runtime.stackRestore(stack)
|
|
return z
|
|
}
|
|
}
|
|
return exports
|
|
})
|
|
|