SHA1Managed.cs

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using System.ComponentModel;
using Internal.Cryptography;
 
namespace System.Security.Cryptography;
 
[Obsolete("Derived cryptographic types are obsolete. Use the Create method on the base type instead.", DiagnosticId = "SYSLIB0021", UrlFormat = "https://aka.ms/dotnet-warnings/{0}")]
[EditorBrowsable(EditorBrowsableState.Never)]
public sealed class SHA1Managed : SHA1
{
    private readonly HashProvider _hashProvider;
 
    public SHA1Managed()
    {
        _hashProvider = HashProviderDispenser.CreateHashProvider("SHA1");
        HashSizeValue = _hashProvider.HashSizeInBytes * 8;
    }
 
    protected sealed override void HashCore(byte[] array, int ibStart, int cbSize)
    {
        _hashProvider.AppendHashData(array, ibStart, cbSize);
    }
 
    protected sealed override void HashCore(ReadOnlySpan<byte> source)
    {
        _hashProvider.AppendHashData(source);
    }
 
    protected sealed override byte[] HashFinal()
    {
        return _hashProvider.FinalizeHashAndReset();
    }
 
    protected sealed override bool TryHashFinal(Span<byte> destination, out int bytesWritten)
    {
        return _hashProvider.TryFinalizeHashAndReset(destination, out bytesWritten);
    }
 
    public sealed override void Initialize()
    {
        _hashProvider.Reset();
    }
 
    protected sealed override void Dispose(bool disposing)
    {
        _hashProvider.Dispose(disposing);
        base.Dispose(disposing);
    }
}