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| CodeSonar® 9.2p0 | CONFIDENTIAL | CodeSecure Inc |
The same random seed is used multiple times.
If two random generators are initialized with the same seed, they will produce the same predictable sequence of numbers.
See also Hardcoded Random Seed (C#).
| クラス名 | Use of Same Seed (C#) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 日本語クラス名 | Use of Same Seed (C#) | |||||||||
| クラス分類 | セキュリティ (security) | |||||||||
| ニーモニック | CSHARP.INSEC.SS | |||||||||
| カテゴリー |
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| 対応言語 | C# で利用可能です。 |
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| 有効/無効設定 | このワーニングクラスのチェックはデフォルトで有効になっています。チェックを無効にするにはプロジェクト設定ファイル
（configuration file）に以下の WARNING_FILTER ルールを追加してください。
WARNING_FILTER += discard class="Use of Same Seed (C#)" |
English (en)
using System;
namespace Same_Seed_in_PRNG {
class Same_Seed_in_PRNG {
public static int SEED = 999;
public override void MyRand() {
Random random1 = new Random(SEED);
Random random2 = new Random(SEED); // 'Use of Same Seed (C#)' warning issued here
Console.WriteLine("" + random1.Next());
Console.WriteLine("" + random2.Next());
}
}
}
Use a less predictable seed, or don't specify a seed at all.
設定ファイルの以下のパラメータがこのワーニングクラスのチェックに影響します。
To report problems with this documentation, please visit https://support.codesecure.com/.