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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
namespace System.Security.Permissions
{
using System;
using System.Security.Util;
using System.Diagnostics.Contracts;
[System.Runtime.InteropServices.ComVisible(true)]
[Serializable] sealed public class StrongNamePublicKeyBlob
{
internal byte[] PublicKey;
internal StrongNamePublicKeyBlob()
{
}
public StrongNamePublicKeyBlob( byte[] publicKey )
{
if (publicKey == null)
throw new ArgumentNullException( nameof(PublicKey) );
Contract.EndContractBlock();
this.PublicKey = new byte[publicKey.Length];
Array.Copy( publicKey, 0, this.PublicKey, 0, publicKey.Length );
}
internal StrongNamePublicKeyBlob( String publicKey )
{
this.PublicKey = Hex.DecodeHexString( publicKey );
}
private static bool CompareArrays( byte[] first, byte[] second )
{
if (first.Length != second.Length)
{
return false;
}
int count = first.Length;
for (int i = 0; i < count; ++i)
{
if (first[i] != second[i])
return false;
}
return true;
}
internal bool Equals( StrongNamePublicKeyBlob blob )
{
if (blob == null)
return false;
else
return CompareArrays( this.PublicKey, blob.PublicKey );
}
public override bool Equals( Object obj )
{
if (obj == null || !(obj is StrongNamePublicKeyBlob))
return false;
return this.Equals( (StrongNamePublicKeyBlob)obj );
}
static private int GetByteArrayHashCode( byte[] baData )
{
if (baData == null)
return 0;
int accumulator = 0;
for (int i = 0; i < baData.Length; ++i)
{
accumulator = (accumulator << 8) ^ (int)baData[i] ^ (accumulator >> 24);
}
return accumulator;
}
public override int GetHashCode()
{
return GetByteArrayHashCode( PublicKey );
}
public override String ToString()
{
return Hex.EncodeHexString( PublicKey );
}
}
}
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