init

2025-10-09 17:41:57 +00:00
commit 7a3b2960f8
146 changed files with 34948 additions and 0 deletions
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+<?php
+require_once __DIR__ . "/../vendor/autoload.php";
+
+class HmacDRBGTest extends \PHPUnit\Framework\TestCase {
+
+    public function test_should_support_hmac_drbg_sha256() {
+        function doDrbg($opt) {
+            $drbg = new \Elliptic\HmacDRBG([
+                "hash" => ["algo" => 'sha256', 'outSize' => 256, 'hmacStrength' => 192],//hash.sha256,
+                "entropy" => $opt["entropy"],
+                "nonce" => $opt["nonce"],
+                "pers" => $opt["pers"]
+            ]);
+            return $drbg->generate($opt["size"], 'hex');
+        }
+
+        $test = [
+          [
+            "entropy" => 'totally random0123456789',
+            "nonce" => 'secret nonce',
+            "pers" => 'my drbg',
+            "size" => 32,
+            "res" => '018ec5f8e08c41e5ac974eb129ac297c5388ee1864324fa13d9b15cf98d9a157'
+          ],
+          [
+            "entropy" => 'totally random0123456789',
+            "nonce" => 'secret nonce',
+            "pers" => null,
+            "size" => 32,
+            "res" => 'ed5d61ecf0ef38258e62f03bbb49f19f2cd07ba5145a840d83b134d5963b3633'
+          ]
+        ];
+        for ($i = 0; $i < count($test); $i++)
+            $this->assertEquals(doDrbg($test[$i]), $test[$i]["res"]);
+    }
+
+    /**
+    * @dataProvider NISTVector
+    */
+    public function test_should_not_fail_at_NIST_vector($opt) {
+        $drbg = new \Elliptic\HmacDRBG([
+            "hash" => ["algo" => 'sha256', 'outSize' => 256, 'hmacStrength' => 192],//hash.sha256,
+            "entropy" => $opt["entropy"],
+            "entropyEnc" => 'hex',
+            "nonce" => $opt["nonce"],
+            "nonceEnc" => 'hex',
+            "pers" => $opt["pers"],
+            "persEnc" => 'hex'
+        ]);
+
+        for ($i = 0; $i < count($opt["add"]); $i++) {
+          $last = $drbg->generate(strlen($opt["expected"]) / 2,
+                                   'hex',
+                                   $opt["add"][$i],
+                                   'hex');
+        }
+        $this->assertEquals($last, $opt["expected"]);
+    }
+
+    function NISTVector() {
+        $data  = json_decode(file_get_contents(__DIR__."/fixtures/hmac-drbg-nist.json"), true);
+        $cases = array();
+        for($i = 0; $i < count($data); ++$i) {
+            $cases[ $data[$i]["name"] ] = [ $data[$i] ];
+        }
+        return $cases;
+    }
+}