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C#: Change random temp folder names to hash values

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This commit is contained in:
Tamas Vajk
2024-08-19 15:56:56 +02:00
parent a25d9c7397
commit 9d7314febb
3 changed files with 17 additions and 10 deletions
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17
csharp/extractor/Semmle.Util/FileUtils.cs
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@@ -91,11 +91,24 @@ namespace Semmle.Util
public static string ComputeFileHash(string filePath)
{
using var fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read);
using var shaAlg = SHA256.Create();
var sha = shaAlg.ComputeHash(fileStream);
var sha = SHA256.HashData(fileStream);
return GetHashString(sha);
}
public static string ComputeHash(string input)
{
var bytes = Encoding.Unicode.GetBytes(input);
var sha = MD5.HashData(bytes); // MD5 to keep it shorter than SHA256
return GetHashString(sha).ToUpper();
}
private static string GetHashString(byte[] sha)
{
var hex = new StringBuilder(sha.Length * 2);
foreach (var b in sha)
{
hex.AppendFormat("{0:x2}", b);
}
return hex.ToString();
}