JavaScript is not currently enabled, but is required for full CodeSonar manual search and browse functionality.
If you are viewing this file in your hub's Web GUI, enable JavaScript in your browser: you will also need it for GUI functionality.
If you opened this file directly from disk, your browser may be directly suppressing JavaScript functionality: certain browsers perform this suppression on local files (but not files delivered by web servers) for security reasons.
| CodeSonar® 9.0p0 Hot Tips | CONFIDENTIAL | CodeSecure Inc |
A weak, possibly reversible hash algorithm is used.
Some cryptography algorithms are nowadays considered as outdated and unsafe or actually broken, since they are too easy to decode. This checker identifies uses of unsafe algorithms for cryptography.
| Class Name | Weak Hash Algorithm (C#) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Significance | security | |||||||||
| Mnemonic | CSHARP.CRYPTO.WHA | |||||||||
| Categories |
|
|||||||||
| Availability | Available for C# only. |
|||||||||
| Enabling | Checks for this warning class are enabled by
default. To disable them, add the following WARNING_FILTER rule to the
project configuration file.
WARNING_FILTER += discard class="Weak Hash Algorithm (C#)" |
Japanese (ja)
using System;
using System.Security.Cryptography;
namespace DocumentationExamples
{
public class Cryptography
{
public static void Main(string[] args)
{
DES.Create(); // Risky Cryptographic Field (C#) warning issued here
SHA256.Create();
MD5.Create(); // Weak Hash Algorithm (C#) warning issued here
string mypassword = "HELLO WORLD!";
Convert.FromBase64String(mypassword); // Unsafe Base64 Encoding (C#) warning issued here
AesCryptoServiceProvider provider = new AesCryptoServiceProvider();
provider.Mode = CipherMode.ECB; // Cryptographic Algorithm with Weak Cipher (C#) warning issued here
// - AesCryptoServiceProvider is a secure algorithm, but ECB is an unsafe cipher mode.
}
}
}
Use a safer hash algorithm.
The following configuration file parameters affect checks for this warning class.