public static HashAlgorithm GetHashAlgorithm(System.Deployment.Internal.Isolation.Manifest.CMS_HASH_DIGESTMETHOD digestMethod)
{
if (digestMethod == System.Deployment.Internal.Isolation.Manifest.CMS_HASH_DIGESTMETHOD.CMS_HASH_DIGESTMETHOD_SHA1)
{
return(new SHA1CryptoServiceProvider());
}
if (digestMethod == System.Deployment.Internal.Isolation.Manifest.CMS_HASH_DIGESTMETHOD.CMS_HASH_DIGESTMETHOD_SHA256)
{
if (PlatformSpecific.OnWindows2003 || PlatformSpecific.OnVistaOrAbove)
{
return(CryptoConfig.CreateFromName("System.Security.Cryptography.SHA256CryptoServiceProvider") as HashAlgorithm);
}
return(new SHA256Managed());
}
if (digestMethod == System.Deployment.Internal.Isolation.Manifest.CMS_HASH_DIGESTMETHOD.CMS_HASH_DIGESTMETHOD_SHA384)
{
if (PlatformSpecific.OnWindows2003 || PlatformSpecific.OnVistaOrAbove)
{
return(CryptoConfig.CreateFromName("System.Security.Cryptography.SHA384CryptoServiceProvider") as HashAlgorithm);
}
return(new SHA384Managed());
}
if (digestMethod != System.Deployment.Internal.Isolation.Manifest.CMS_HASH_DIGESTMETHOD.CMS_HASH_DIGESTMETHOD_SHA512)
{
throw new NotSupportedException(string.Format(CultureInfo.CurrentUICulture, Resources.GetString("Ex_DigestMethodNotSupported"), new object[] { digestMethod.ToString() }));
}
if (!PlatformSpecific.OnWindows2003 && !PlatformSpecific.OnVistaOrAbove)
{
return(new SHA512Managed());
}
return(CryptoConfig.CreateFromName("System.Security.Cryptography.SHA512CryptoServiceProvider") as HashAlgorithm);
}
public Hash(byte[] digestValue, System.Deployment.Internal.Isolation.Manifest.CMS_HASH_DIGESTMETHOD digestMethod, System.Deployment.Internal.Isolation.Manifest.CMS_HASH_TRANSFORM transform)
{
if (digestValue == null)
{
throw new ArgumentException(Resources.GetString("Ex_HashNullDigestValue"));
}
this._digestValue = digestValue;
this._digestMethod = digestMethod;
this._transform = transform;
}
public Hash(byte[] digestValue, System.Deployment.Internal.Isolation.Manifest.CMS_HASH_DIGESTMETHOD digestMethod, System.Deployment.Internal.Isolation.Manifest.CMS_HASH_TRANSFORM transform)
{
if (digestValue == null)
{
throw new ArgumentException(Resources.GetString("Ex_HashNullDigestValue"));
}
this._digestValue = digestValue;
this._digestMethod = digestMethod;
this._transform = transform;
}
public static byte[] GenerateDigestValue(string filePath, System.Deployment.Internal.Isolation.Manifest.CMS_HASH_DIGESTMETHOD digestMethod, System.Deployment.Internal.Isolation.Manifest.CMS_HASH_TRANSFORM transform)
{
Stream inputStream = null;
byte[] buffer = null;
try
{
HashAlgorithm hashAlgorithm = GetHashAlgorithm(digestMethod);
inputStream = GetTransformedStream(filePath, transform);
buffer = hashAlgorithm.ComputeHash(inputStream);
}
finally
{
if (inputStream != null)
{
inputStream.Close();
}
}
return(buffer);
}
public void AddHash(byte[] digestValue, System.Deployment.Internal.Isolation.Manifest.CMS_HASH_DIGESTMETHOD digestMethod, System.Deployment.Internal.Isolation.Manifest.CMS_HASH_TRANSFORM transform)
{
Hash hash = new Hash(digestValue, digestMethod, transform);
this._hashes.Add(hash);
}