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/* Transport Security Layer (TLS)
* Copyright (c) 2003-2004 Carlos Guzman Alvarez
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
using System;
using System.Security.Cryptography;
namespace Mono.Security.Protocol.Tls
{
internal class RSASslSignatureDeformatter : AsymmetricSignatureDeformatter
{
#region Fields
private RSA key;
private HashAlgorithm hash;
#endregion
#region Constructors
public RSASslSignatureDeformatter()
{
}
public RSASslSignatureDeformatter(AsymmetricAlgorithm key)
{
this.SetKey(key);
}
#endregion
#region Methods
public override bool VerifySignature(
byte[] rgbHash,
byte[] rgbSignature)
{
if (this.key == null)
{
throw new CryptographicUnexpectedOperationException("The key is a null reference");
}
if (hash == null)
{
throw new CryptographicUnexpectedOperationException("The hash algorithm is a null reference.");
}
if (rgbHash == null)
{
throw new ArgumentNullException("The rgbHash parameter is a null reference.");
}
return Mono.Security.Cryptography.PKCS1.Verify_v15(
this.key,
this.hash,
rgbHash,
rgbSignature);
}
public override void SetHashAlgorithm(string strName)
{
switch (strName)
{
case "MD5SHA1":
this.hash = new Mono.Security.Cryptography.MD5SHA1();
break;
default:
this.hash = HashAlgorithm.Create(strName);
break;
}
}
public override void SetKey(AsymmetricAlgorithm key)
{
if (!(key is RSA))
{
throw new ArgumentException("Specfied key is not an RSA key");
}
this.key = key as RSA;
}
#endregion
}
}
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