CSHARP.CRYPTO.WHA : Weak Hash Algorithm (C#)

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CSHARP.CRYPTO.WHA : Weak Hash Algorithm (C#)

Summary

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Some cryptography algorithms are nowadays considered as outdated and unsafe or actually broken, since they are too easy to decode.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.

Properties

Class Name

Weak Hash Algorithm (C#)

Significance

security

Mnemonic

CSHARP.CRYPTO.WHA

Example

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.

        }
    }
}

Resolution

Use a safer hash algorithm.

Relevant Configuration File Parameters

The following configuration file parameters affect checks for this warning class.

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