CngProperty.cs

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using System.Diagnostics.CodeAnalysis;
using Internal.Cryptography;
 
namespace System.Security.Cryptography;
 
public struct CngProperty : IEquatable<CngProperty>
{
    private readonly byte[] _value;
 
    private int? _lazyHashCode;
 
    public string Name { get; private set; }
 
    public CngPropertyOptions Options { get; private set; }
 
    public CngProperty(string name, byte[]? value, CngPropertyOptions options)
    {
        this = default(CngProperty);
        if (name == null)
        {
            throw new ArgumentNullException("name");
        }
        Name = name;
        Options = options;
        _lazyHashCode = null;
        _value = value?.CloneByteArray();
    }
 
    public byte[]? GetValue()
    {
        if (_value != null)
        {
            return _value.CloneByteArray();
        }
        return null;
    }
 
    public override bool Equals([NotNullWhen(true)] object? obj)
    {
        if (obj is CngProperty)
        {
            return Equals((CngProperty)obj);
        }
        return false;
    }
 
    public bool Equals(CngProperty other)
    {
        if (!string.Equals(Name, other.Name, StringComparison.Ordinal))
        {
            return false;
        }
        if (Options != other.Options)
        {
            return false;
        }
        if (_value == null)
        {
            return other._value == null;
        }
        if (other._value == null)
        {
            return false;
        }
        if (_value.Length != other._value.Length)
        {
            return false;
        }
        for (int i = 0; i < _value.Length; i++)
        {
            if (_value[i] != other._value[i])
            {
                return false;
            }
        }
        return true;
    }
 
    public override int GetHashCode()
    {
        if (!_lazyHashCode.HasValue)
        {
            int num = Name.GetHashCode() ^ Options.GetHashCode();
            if (_value != null)
            {
                for (int i = 0; i < _value.Length; i++)
                {
                    int num2 = _value[i] << i % 4 * 8;
                    num ^= num2;
                }
            }
            _lazyHashCode = num;
        }
        return _lazyHashCode.Value;
    }
 
    public static bool operator ==(CngProperty left, CngProperty right)
    {
        return left.Equals(right);
    }
 
    public static bool operator !=(CngProperty left, CngProperty right)
    {
        return !left.Equals(right);
    }
 
    internal byte[] GetValueWithoutCopying()
    {
        return _value;
    }
}