我写了一个小种子RNG，现在我试图使用pracrand对其进行一些统计测试。RNG在这里：https：//github.com/nomadcrypto/seededrsa/blob/master/rng.js，测试代码为：
const RNG = require("./rng");
function test() {
const seed = "praise you muffin lion enable neck grocery crumble super myself license ghost"
const rng = new RNG(seed)
while(true) {
var bytes = Buffer.allocUnsafe(8)
rng.nextBytes(bytes)
process.stdout.write(bytes.toString("binary"))
}
}
test()
我这样运行测试：node/path/to/test_rng.js |/path/to/rng_test stdin8
这应该将8位随机二进制字符串输出到Stdout，而Pracrand正在从Stdin读取它们。这总是在同一时刻死亡，并显示以下错误
RNG_test using PractRand version 0.93
RNG = RNG_stdin8, seed = 0x61ce6e4b
test set = normal, folding = standard (8 bit)
FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory
Writing Node.js report to file: report.20190311.183904.23092.001.json
Node.js report completed
1: 0x959570 node::Abort() [node]
2: 0x95a25e node::OnFatalError(char const*, char const*) [node]
3: 0xb3735e v8::Utils::ReportOOMFailure(v8::internal::Isolate*, char const*, bool) [node]
4: 0xb37594 v8::internal::V8::FatalProcessOutOfMemory(v8::internal::Isolate*, char const*, bool) [node]
5: 0xf36bd2 [node]
6: 0xf36cd8 v8::internal::Heap::CheckIneffectiveMarkCompact(unsigned long, double) [node]
7: 0xf433f8 v8::internal::Heap::PerformGarbageCollection(v8::internal::GarbageCollector, v8::GCCallbackFlags) [node]
8: 0xf43f0b v8::internal::Heap::CollectGarbage(v8::internal::AllocationSpace, v8::internal::GarbageCollectionReason, v8::GCCallbackFlags) [node]
9: 0xf46c41 v8::internal::Heap::AllocateRawWithRetryOrFail(int, v8::internal::AllocationSpace, v8::internal::AllocationAlignment) [node]
10: 0xf10e74 v8::internal::Factory::NewFillerObject(int, bool, v8::internal::AllocationSpace) [node]
11: 0x11c72be v8::internal::Runtime_AllocateInNewSpace(int, v8::internal::Object**, v8::internal::Isolate*) [node]
12: 0x82556f4fc5d
rng=RNG_stdin8, seed=0x61ce6e4b
length= 1 megabyte (2^20 bytes), time= 34.0 seconds
Test Name Raw Processed Evaluation
BCFN(2+0,13-7,T) R=+39522 p = 0 FAIL !!!!!!!!
BCFN(2+1,13-7,T) R=+40616 p = 0 FAIL !!!!!!!!
BCFN(2+2,13-8,T) R=+43491 p = 0 FAIL !!!!!!!!
BCFN(2+3,13-8,T) R=+32793 p = 2e-8323 FAIL !!!!!!!!
BCFN(2+4,13-8,T) R=+20180 p = 1e-5122 FAIL !!!!!!!!
BCFN(2+5,13-9,T) R=+12114 p = 4e-2723 FAIL !!!!!!!!
BCFN(2+6,13-9,T) R= +5993 p = 7e-1348 FAIL !!!!!!!!
DC6-9x1Bytes-1 R= +6430 p = 8e-3715 FAIL !!!!!!!!
Gap-16:A R=+19027 p = 0 FAIL !!!!!!!!
Gap-16:B R=+80036 p = 0 FAIL !!!!!!!!
FPF-14+6/16:(0,14-4) R=+23224 p = 0 FAIL !!!!!!!!
FPF-14+6/16:(1,14-5) R=+26476 p = 0 FAIL !!!!!!!!
FPF-14+6/16:(2,14-5) R= +3407 p = 2e-2824 FAIL !!!!!!!!
FPF-14+6/16:(3,14-6) R= +2417 p = 6e-1850 FAIL !!!!!!!!
FPF-14+6/16:(4,14-7) R= +1720 p = 1e-1368 FAIL !!!!!!!!
FPF-14+6/16:(5,14-8) R= +1161 p = 2.8e-835 FAIL !!!!!!!
FPF-14+6/16:(6,14-8) R=+527.7 p = 9.0e-380 FAIL !!!!!!!
FPF-14+6/16:(7,14-9) R=+758.3 p = 9.9e-478 FAIL !!!!!!!
FPF-14+6/16:(8,14-10) R=+545.9 p = 5.5e-291 FAIL !!!!!!
FPF-14+6/16:(9,14-11) R=+670.1 p = 6.4e-293 FAIL !!!!!!
FPF-14+6/16:all R=+29837 p = 0 FAIL !!!!!!!!
FPF-14+6/16:all2 R=+306094057 p = 0 FAIL !!!!!!!!
FPF-14+6/16:cross R= +6279 p = 2e-4805 FAIL !!!!!!!!
...and 22 test result(s) without anomalies
我敢肯定这很重。谁能提供一些可以帮助我正确测试此RNG的技巧或技巧？
解决方案是使用流API并推动缓冲区而不是打印二进制字符串
const RNG = require("./rng");
var crypto= require("crypto");
var stream = require('stream');
var util = require('util');
var Readable = stream.Readable;
function RandomStream(options) {
if (!(this instanceof RandomStream)) {
return new RandomStream(options);
}
Readable.call(this, options);
this.seed = "praise you muffin lion enable neck grocery crumble super myself license ghost"
this.rng = new RNG(this.seed)
this.bytes = Buffer.allocUnsafe(8);
}
util.inherits(RandomStream, Readable);
RandomStream.prototype._read = function (size) {
var ready = true;
while (ready) {
var bytes = this.rng.randomBytes(8)
//bytes = crypto.randomBytes(8)
ready = this.push(bytes)
}
};
var readstream = new RandomStream();
readstream.pipe(process.stdout)
这与我的RNG的RandomyBytes和crypto.randombytes一起工作。到目前为止，在Practrand中找不到任何东西
(env) nomadcrypto@nomadcrypto:~/projects/seededrsa$ node test_rng.js |/home/nomadcrypto/projects/practrand/build/RNG_test stdin8
RNG_test using PractRand version 0.93
RNG = RNG_stdin8, seed = 0x3bb19275
test set = normal, folding = standard (8 bit)
rng=RNG_stdin8, seed=0x3bb19275
length= 4 megabytes (2^22 bytes), time= 2.3 seconds
no anomalies in 56 test result(s)
rng=RNG_stdin8, seed=0x3bb19275
length= 8 megabytes (2^23 bytes), time= 5.0 seconds
no anomalies in 60 test result(s)
rng=RNG_stdin8, seed=0x3bb19275
length= 16 megabytes (2^24 bytes), time= 9.9 seconds
no anomalies in 66 test result(s)
rng=RNG_stdin8, seed=0x3bb19275
length= 32 megabytes (2^25 bytes), time= 19.1 seconds
no anomalies in 72 test result(s)
rng=RNG_stdin8, seed=0x3bb19275
length= 64 megabytes (2^26 bytes), time= 38.2 seconds
no anomalies in 76 test result(s)
rng=RNG_stdin8, seed=0x3bb19275
length= 128 megabytes (2^27 bytes), time= 76.0 seconds
no anomalies in 82 test result(s)
rng=RNG_stdin8, seed=0x3bb19275
length= 256 megabytes (2^28 bytes), time= 147 seconds
no anomalies in 88 test result(s)
rng=RNG_stdin8, seed=0x3bb19275
length= 512 megabytes (2^29 bytes), time= 289 seconds
no anomalies in 92 test result(s)
rng=RNG_stdin8, seed=0x3bb19275
length= 1 gigabyte (2^30 bytes), time= 571 seconds
no anomalies in 98 test result(s)